/export/starexec/sandbox/solver/bin/starexec_run_default /export/starexec/sandbox/benchmark/theBenchmark.c /export/starexec/sandbox/output/output_files -------------------------------------------------------------------------------- Ultimate: Cannot open display: This is Ultimate 0.1.25-34f2e62 [2020-07-01 13:03:06,868 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-01 13:03:06,870 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-01 13:03:06,881 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-01 13:03:06,882 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-01 13:03:06,883 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-01 13:03:06,884 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-01 13:03:06,885 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-01 13:03:06,887 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-01 13:03:06,888 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-01 13:03:06,889 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-01 13:03:06,889 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-01 13:03:06,890 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-01 13:03:06,891 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-01 13:03:06,892 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-01 13:03:06,893 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-01 13:03:06,893 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-01 13:03:06,894 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-01 13:03:06,896 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-01 13:03:06,897 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-01 13:03:06,899 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-01 13:03:06,900 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-01 13:03:06,901 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-01 13:03:06,901 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-01 13:03:06,903 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-01 13:03:06,904 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-01 13:03:06,904 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-01 13:03:06,905 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-01 13:03:06,905 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-01 13:03:06,906 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-01 13:03:06,906 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-01 13:03:06,907 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-01 13:03:06,907 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-01 13:03:06,908 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-01 13:03:06,909 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-01 13:03:06,909 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-01 13:03:06,910 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-01 13:03:06,910 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-01 13:03:06,910 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-01 13:03:06,911 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-01 13:03:06,911 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-01 13:03:06,912 INFO L101 SettingsManager]: Beginning loading settings from /export/starexec/sandbox/solver/bin/./../termcomp2017.epf [2020-07-01 13:03:06,926 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-01 13:03:06,926 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-01 13:03:06,927 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-01 13:03:06,927 INFO L138 SettingsManager]: * Rewrite not-equals=true [2020-07-01 13:03:06,927 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-01 13:03:06,927 INFO L138 SettingsManager]: * Minimize states using LBE with the strategy=SINGLE [2020-07-01 13:03:06,928 INFO L138 SettingsManager]: * Use SBE=true [2020-07-01 13:03:06,928 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-07-01 13:03:06,928 INFO L138 SettingsManager]: * Use old map elimination=false [2020-07-01 13:03:06,928 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-07-01 13:03:06,928 INFO L138 SettingsManager]: * Buchi interpolant automaton construction strategy=DANDELION [2020-07-01 13:03:06,928 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-07-01 13:03:06,929 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-07-01 13:03:06,929 INFO L138 SettingsManager]: * Construct termination proof for TermComp=true [2020-07-01 13:03:06,929 INFO L138 SettingsManager]: * Command for external solver (GNTA synthesis)=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 13:03:06,929 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-01 13:03:06,929 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-07-01 13:03:06,929 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-01 13:03:06,930 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-01 13:03:06,930 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-07-01 13:03:06,930 INFO L138 SettingsManager]: * How to treat unsigned ints differently from normal ones=IGNORE [2020-07-01 13:03:06,930 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-01 13:03:06,930 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-01 13:03:06,930 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-07-01 13:03:06,931 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 [2020-07-01 13:03:06,931 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-01 13:03:06,931 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-01 13:03:06,931 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-01 13:03:06,931 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-01 13:03:07,097 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-01 13:03:07,111 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-01 13:03:07,114 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-01 13:03:07,116 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-01 13:03:07,116 INFO L275 PluginConnector]: CDTParser initialized [2020-07-01 13:03:07,117 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /export/starexec/sandbox/benchmark/theBenchmark.c [2020-07-01 13:03:07,228 INFO L220 CDTParser]: Created temporary CDT project at /export/starexec/sandbox/tmp/BenchExec_run_uKCCT8/tmp/318956a5f2f440f993b79a78edefffcf/FLAG35449d370 [2020-07-01 13:03:07,559 INFO L306 CDTParser]: Found 1 translation units. [2020-07-01 13:03:07,560 INFO L160 CDTParser]: Scanning /export/starexec/sandbox/benchmark/theBenchmark.c [2020-07-01 13:03:07,561 WARN L117 ultiparseSymbolTable]: System include stdlib.h could not be resolved by CDT -- only built-in system includes are available. [2020-07-01 13:03:07,567 INFO L349 CDTParser]: About to delete temporary CDT project at /export/starexec/sandbox/tmp/BenchExec_run_uKCCT8/tmp/318956a5f2f440f993b79a78edefffcf/FLAG35449d370 [2020-07-01 13:03:07,957 INFO L357 CDTParser]: Successfully deleted /export/starexec/sandbox/tmp/BenchExec_run_uKCCT8/tmp/318956a5f2f440f993b79a78edefffcf [2020-07-01 13:03:07,968 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-01 13:03:07,970 INFO L131 ToolchainWalker]: Walking toolchain with 7 elements. [2020-07-01 13:03:07,971 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-01 13:03:07,971 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-01 13:03:07,975 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-01 13:03:07,976 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.07 01:03:07" (1/1) ... [2020-07-01 13:03:07,979 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b7aa7f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 01:03:07, skipping insertion in model container [2020-07-01 13:03:07,979 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.07 01:03:07" (1/1) ... [2020-07-01 13:03:07,987 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-01 13:03:08,003 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-01 13:03:08,225 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-01 13:03:08,237 INFO L203 MainTranslator]: Completed pre-run [2020-07-01 13:03:08,253 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-01 13:03:08,268 INFO L208 MainTranslator]: Completed translation [2020-07-01 13:03:08,269 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 01:03:08 WrapperNode [2020-07-01 13:03:08,269 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-01 13:03:08,270 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-01 13:03:08,270 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-01 13:03:08,270 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-01 13:03:08,280 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 01:03:08" (1/1) ... [2020-07-01 13:03:08,288 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 01:03:08" (1/1) ... [2020-07-01 13:03:08,308 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-01 13:03:08,309 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-01 13:03:08,309 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-01 13:03:08,309 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-01 13:03:08,319 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 01:03:08" (1/1) ... [2020-07-01 13:03:08,319 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 01:03:08" (1/1) ... [2020-07-01 13:03:08,320 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 01:03:08" (1/1) ... [2020-07-01 13:03:08,321 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 01:03:08" (1/1) ... [2020-07-01 13:03:08,324 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 01:03:08" (1/1) ... [2020-07-01 13:03:08,330 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 01:03:08" (1/1) ... [2020-07-01 13:03:08,331 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 01:03:08" (1/1) ... [2020-07-01 13:03:08,333 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-01 13:03:08,333 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-01 13:03:08,333 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-01 13:03:08,334 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-01 13:03:08,335 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 01:03:08" (1/1) ... No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 [2020-07-01 13:03:08,404 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-01 13:03:08,404 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-01 13:03:08,404 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-01 13:03:08,404 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-01 13:03:08,405 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-01 13:03:08,405 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-01 13:03:08,655 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-01 13:03:08,655 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-07-01 13:03:08,659 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 01:03:08 BoogieIcfgContainer [2020-07-01 13:03:08,659 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-01 13:03:08,660 INFO L113 PluginConnector]: ------------------------BlockEncodingV2---------------------------- [2020-07-01 13:03:08,660 INFO L271 PluginConnector]: Initializing BlockEncodingV2... [2020-07-01 13:03:08,662 INFO L275 PluginConnector]: BlockEncodingV2 initialized [2020-07-01 13:03:08,663 INFO L185 PluginConnector]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 01:03:08" (1/1) ... [2020-07-01 13:03:08,677 INFO L313 BlockEncoder]: Initial Icfg 44 locations, 49 edges [2020-07-01 13:03:08,679 INFO L258 BlockEncoder]: Using Remove infeasible edges [2020-07-01 13:03:08,679 INFO L263 BlockEncoder]: Using Maximize final states [2020-07-01 13:03:08,680 INFO L270 BlockEncoder]: Using Minimize states even if more edges are added than removed.=false [2020-07-01 13:03:08,680 INFO L276 BlockEncoder]: Using Minimize states using LBE with the strategy=SINGLE [2020-07-01 13:03:08,682 INFO L296 BlockEncoder]: Using Remove sink states [2020-07-01 13:03:08,683 INFO L171 BlockEncoder]: Using Apply optimizations until nothing changes=true [2020-07-01 13:03:08,683 INFO L179 BlockEncoder]: Using Rewrite not-equals [2020-07-01 13:03:08,707 INFO L185 BlockEncoder]: Using Use SBE [2020-07-01 13:03:08,741 INFO L200 BlockEncoder]: SBE split 24 edges [2020-07-01 13:03:08,746 INFO L70 emoveInfeasibleEdges]: Removed 1 edges and 0 locations because of local infeasibility [2020-07-01 13:03:08,748 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-07-01 13:03:08,764 INFO L100 BaseMinimizeStates]: Removed 8 edges and 4 locations by large block encoding [2020-07-01 13:03:08,767 INFO L70 RemoveSinkStates]: Removed 1 edges and 1 locations by removing sink states [2020-07-01 13:03:08,768 INFO L70 emoveInfeasibleEdges]: Removed 0 edges and 0 locations because of local infeasibility [2020-07-01 13:03:08,768 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-07-01 13:03:08,769 INFO L100 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2020-07-01 13:03:08,770 INFO L70 RemoveSinkStates]: Removed 0 edges and 0 locations by removing sink states [2020-07-01 13:03:08,770 INFO L313 BlockEncoder]: Encoded RCFG 39 locations, 67 edges [2020-07-01 13:03:08,770 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 01:03:08 BasicIcfg [2020-07-01 13:03:08,771 INFO L132 PluginConnector]: ------------------------ END BlockEncodingV2---------------------------- [2020-07-01 13:03:08,772 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-01 13:03:08,772 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-01 13:03:08,775 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-01 13:03:08,775 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.07 01:03:07" (1/4) ... [2020-07-01 13:03:08,776 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ba92401 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.07 01:03:08, skipping insertion in model container [2020-07-01 13:03:08,776 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 01:03:08" (2/4) ... [2020-07-01 13:03:08,777 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ba92401 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.07 01:03:08, skipping insertion in model container [2020-07-01 13:03:08,777 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 01:03:08" (3/4) ... [2020-07-01 13:03:08,777 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ba92401 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 01:03:08, skipping insertion in model container [2020-07-01 13:03:08,777 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 01:03:08" (4/4) ... [2020-07-01 13:03:08,779 INFO L109 eAbstractionObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-07-01 13:03:08,790 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2020-07-01 13:03:08,798 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 20 error locations. [2020-07-01 13:03:08,811 INFO L251 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2020-07-01 13:03:08,835 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-01 13:03:08,836 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-01 13:03:08,836 INFO L377 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2020-07-01 13:03:08,836 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-01 13:03:08,836 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-01 13:03:08,836 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-01 13:03:08,836 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-01 13:03:08,836 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-01 13:03:08,852 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states. [2020-07-01 13:03:08,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-07-01 13:03:08,858 INFO L414 BasicCegarLoop]: Found error trace [2020-07-01 13:03:08,859 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-07-01 13:03:08,859 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-07-01 13:03:08,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 13:03:08,866 INFO L82 PathProgramCache]: Analyzing trace with hash 135498, now seen corresponding path program 1 times [2020-07-01 13:03:08,875 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 13:03:08,876 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970162378] [2020-07-01 13:03:08,876 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 13:03:08,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 13:03:09,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-01 13:03:09,021 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970162378] [2020-07-01 13:03:09,022 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-01 13:03:09,022 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-01 13:03:09,023 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033762998] [2020-07-01 13:03:09,028 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-01 13:03:09,028 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-01 13:03:09,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-01 13:03:09,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-01 13:03:09,045 INFO L87 Difference]: Start difference. First operand 39 states. Second operand 3 states. [2020-07-01 13:03:09,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-01 13:03:09,175 INFO L93 Difference]: Finished difference Result 76 states and 131 transitions. [2020-07-01 13:03:09,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-01 13:03:09,177 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-07-01 13:03:09,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-01 13:03:09,190 INFO L225 Difference]: With dead ends: 76 [2020-07-01 13:03:09,190 INFO L226 Difference]: Without dead ends: 39 [2020-07-01 13:03:09,194 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-01 13:03:09,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-07-01 13:03:09,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-07-01 13:03:09,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-07-01 13:03:09,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 66 transitions. [2020-07-01 13:03:09,233 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 66 transitions. Word has length 3 [2020-07-01 13:03:09,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-01 13:03:09,233 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 66 transitions. [2020-07-01 13:03:09,234 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-01 13:03:09,234 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 66 transitions. [2020-07-01 13:03:09,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-07-01 13:03:09,234 INFO L414 BasicCegarLoop]: Found error trace [2020-07-01 13:03:09,234 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-07-01 13:03:09,236 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-01 13:03:09,236 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-07-01 13:03:09,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 13:03:09,237 INFO L82 PathProgramCache]: Analyzing trace with hash 135529, now seen corresponding path program 1 times [2020-07-01 13:03:09,237 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 13:03:09,237 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972854434] [2020-07-01 13:03:09,237 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 13:03:09,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 13:03:09,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-01 13:03:09,270 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972854434] [2020-07-01 13:03:09,270 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-01 13:03:09,271 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-01 13:03:09,271 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174438410] [2020-07-01 13:03:09,273 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-01 13:03:09,273 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-01 13:03:09,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-01 13:03:09,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-01 13:03:09,274 INFO L87 Difference]: Start difference. First operand 39 states and 66 transitions. Second operand 3 states. [2020-07-01 13:03:09,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-01 13:03:09,397 INFO L93 Difference]: Finished difference Result 39 states and 66 transitions. [2020-07-01 13:03:09,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-01 13:03:09,398 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-07-01 13:03:09,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-01 13:03:09,399 INFO L225 Difference]: With dead ends: 39 [2020-07-01 13:03:09,399 INFO L226 Difference]: Without dead ends: 29 [2020-07-01 13:03:09,400 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-01 13:03:09,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-07-01 13:03:09,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-07-01 13:03:09,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-07-01 13:03:09,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 46 transitions. [2020-07-01 13:03:09,405 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 46 transitions. Word has length 3 [2020-07-01 13:03:09,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-01 13:03:09,405 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 46 transitions. [2020-07-01 13:03:09,406 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-01 13:03:09,406 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 46 transitions. [2020-07-01 13:03:09,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-07-01 13:03:09,406 INFO L414 BasicCegarLoop]: Found error trace [2020-07-01 13:03:09,406 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-07-01 13:03:09,406 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-01 13:03:09,407 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-07-01 13:03:09,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 13:03:09,430 INFO L82 PathProgramCache]: Analyzing trace with hash 135531, now seen corresponding path program 1 times [2020-07-01 13:03:09,430 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 13:03:09,430 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263357375] [2020-07-01 13:03:09,431 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 13:03:09,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 13:03:09,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-01 13:03:09,450 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263357375] [2020-07-01 13:03:09,450 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-01 13:03:09,451 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-01 13:03:09,451 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044719753] [2020-07-01 13:03:09,451 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-01 13:03:09,451 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-01 13:03:09,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-01 13:03:09,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-01 13:03:09,452 INFO L87 Difference]: Start difference. First operand 29 states and 46 transitions. Second operand 3 states. [2020-07-01 13:03:09,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-01 13:03:09,514 INFO L93 Difference]: Finished difference Result 39 states and 46 transitions. [2020-07-01 13:03:09,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-01 13:03:09,515 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-07-01 13:03:09,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-01 13:03:09,516 INFO L225 Difference]: With dead ends: 39 [2020-07-01 13:03:09,516 INFO L226 Difference]: Without dead ends: 29 [2020-07-01 13:03:09,516 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-01 13:03:09,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-07-01 13:03:09,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-07-01 13:03:09,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-07-01 13:03:09,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 36 transitions. [2020-07-01 13:03:09,520 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 36 transitions. Word has length 3 [2020-07-01 13:03:09,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-01 13:03:09,521 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 36 transitions. [2020-07-01 13:03:09,521 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-01 13:03:09,521 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 36 transitions. [2020-07-01 13:03:09,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-07-01 13:03:09,521 INFO L414 BasicCegarLoop]: Found error trace [2020-07-01 13:03:09,521 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-07-01 13:03:09,522 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-01 13:03:09,522 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-07-01 13:03:09,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 13:03:09,522 INFO L82 PathProgramCache]: Analyzing trace with hash 135532, now seen corresponding path program 1 times [2020-07-01 13:03:09,523 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 13:03:09,523 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943515365] [2020-07-01 13:03:09,523 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 13:03:09,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 13:03:09,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-01 13:03:09,556 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943515365] [2020-07-01 13:03:09,556 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-01 13:03:09,557 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-01 13:03:09,557 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033928584] [2020-07-01 13:03:09,557 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-01 13:03:09,557 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-01 13:03:09,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-01 13:03:09,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-01 13:03:09,558 INFO L87 Difference]: Start difference. First operand 29 states and 36 transitions. Second operand 3 states. [2020-07-01 13:03:09,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-01 13:03:09,608 INFO L93 Difference]: Finished difference Result 29 states and 36 transitions. [2020-07-01 13:03:09,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-01 13:03:09,608 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-07-01 13:03:09,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-01 13:03:09,609 INFO L225 Difference]: With dead ends: 29 [2020-07-01 13:03:09,609 INFO L226 Difference]: Without dead ends: 0 [2020-07-01 13:03:09,609 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-01 13:03:09,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-01 13:03:09,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-01 13:03:09,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-01 13:03:09,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-01 13:03:09,610 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 3 [2020-07-01 13:03:09,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-01 13:03:09,611 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-01 13:03:09,611 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-01 13:03:09,611 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-01 13:03:09,611 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-01 13:03:09,611 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-01 13:03:09,614 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-01 13:03:09,635 INFO L268 CegarLoopResult]: For program point L6-6(lines 6 18) no Hoare annotation was computed. [2020-07-01 13:03:09,635 INFO L268 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2020-07-01 13:03:09,635 INFO L264 CegarLoopResult]: At program point L17-1(lines 5 19) the Hoare annotation is: (and (= 4 (select |#length| ULTIMATE.start_main_~x~0.base)) (<= 1 |#StackHeapBarrier|) (= 1 (select |#valid| ULTIMATE.start_main_~x~0.base)) (= 0 ULTIMATE.start_main_~x~0.offset)) [2020-07-01 13:03:09,635 INFO L268 CegarLoopResult]: For program point L13(line 13) no Hoare annotation was computed. [2020-07-01 13:03:09,636 INFO L268 CegarLoopResult]: For program point L13-1(line 13) no Hoare annotation was computed. [2020-07-01 13:03:09,636 INFO L268 CegarLoopResult]: For program point L11(line 11) no Hoare annotation was computed. [2020-07-01 13:03:09,636 INFO L268 CegarLoopResult]: For program point L7(line 7) no Hoare annotation was computed. [2020-07-01 13:03:09,636 INFO L268 CegarLoopResult]: For program point L7-1(lines 7 15) no Hoare annotation was computed. [2020-07-01 13:03:09,636 INFO L268 CegarLoopResult]: For program point L5-1(lines 5 19) no Hoare annotation was computed. [2020-07-01 13:03:09,636 INFO L268 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-07-01 13:03:09,636 INFO L268 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-07-01 13:03:09,636 INFO L268 CegarLoopResult]: For program point ULTIMATE.startErr18REQUIRES_VIOLATION(line 17) no Hoare annotation was computed. [2020-07-01 13:03:09,637 INFO L268 CegarLoopResult]: For program point ULTIMATE.startErr17REQUIRES_VIOLATION(line 13) no Hoare annotation was computed. [2020-07-01 13:03:09,637 INFO L268 CegarLoopResult]: For program point ULTIMATE.startErr19REQUIRES_VIOLATION(line 17) no Hoare annotation was computed. [2020-07-01 13:03:09,637 INFO L268 CegarLoopResult]: For program point ULTIMATE.startErr14REQUIRES_VIOLATION(line 13) no Hoare annotation was computed. [2020-07-01 13:03:09,637 INFO L268 CegarLoopResult]: For program point ULTIMATE.startErr13REQUIRES_VIOLATION(line 11) no Hoare annotation was computed. [2020-07-01 13:03:09,637 INFO L268 CegarLoopResult]: For program point ULTIMATE.startErr16REQUIRES_VIOLATION(line 13) no Hoare annotation was computed. [2020-07-01 13:03:09,637 INFO L268 CegarLoopResult]: For program point ULTIMATE.startErr15REQUIRES_VIOLATION(line 13) no Hoare annotation was computed. [2020-07-01 13:03:09,637 INFO L268 CegarLoopResult]: For program point ULTIMATE.startErr10REQUIRES_VIOLATION(line 10) no Hoare annotation was computed. [2020-07-01 13:03:09,637 INFO L268 CegarLoopResult]: For program point ULTIMATE.startErr9REQUIRES_VIOLATION(line 8) no Hoare annotation was computed. [2020-07-01 13:03:09,638 INFO L268 CegarLoopResult]: For program point ULTIMATE.startErr12REQUIRES_VIOLATION(line 11) no Hoare annotation was computed. [2020-07-01 13:03:09,638 INFO L268 CegarLoopResult]: For program point ULTIMATE.startErr11REQUIRES_VIOLATION(line 10) no Hoare annotation was computed. [2020-07-01 13:03:09,638 INFO L268 CegarLoopResult]: For program point ULTIMATE.startErr6REQUIRES_VIOLATION(line 7) no Hoare annotation was computed. [2020-07-01 13:03:09,638 INFO L268 CegarLoopResult]: For program point ULTIMATE.startErr5REQUIRES_VIOLATION(line 6) no Hoare annotation was computed. [2020-07-01 13:03:09,638 INFO L268 CegarLoopResult]: For program point ULTIMATE.startErr8REQUIRES_VIOLATION(line 8) no Hoare annotation was computed. [2020-07-01 13:03:09,638 INFO L268 CegarLoopResult]: For program point ULTIMATE.startErr7REQUIRES_VIOLATION(line 7) no Hoare annotation was computed. [2020-07-01 13:03:09,638 INFO L268 CegarLoopResult]: For program point L10(line 10) no Hoare annotation was computed. [2020-07-01 13:03:09,638 INFO L268 CegarLoopResult]: For program point ULTIMATE.startErr2REQUIRES_VIOLATION(line 6) no Hoare annotation was computed. [2020-07-01 13:03:09,639 INFO L268 CegarLoopResult]: For program point L10-1(lines 10 14) no Hoare annotation was computed. [2020-07-01 13:03:09,639 INFO L268 CegarLoopResult]: For program point ULTIMATE.startErr1REQUIRES_VIOLATION(line 5) no Hoare annotation was computed. [2020-07-01 13:03:09,639 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-07-01 13:03:09,639 INFO L268 CegarLoopResult]: For program point ULTIMATE.startErr4REQUIRES_VIOLATION(line 6) no Hoare annotation was computed. [2020-07-01 13:03:09,639 INFO L268 CegarLoopResult]: For program point L6(line 6) no Hoare annotation was computed. [2020-07-01 13:03:09,639 INFO L268 CegarLoopResult]: For program point ULTIMATE.startErr3REQUIRES_VIOLATION(line 6) no Hoare annotation was computed. [2020-07-01 13:03:09,639 INFO L268 CegarLoopResult]: For program point L6-1(line 6) no Hoare annotation was computed. [2020-07-01 13:03:09,639 INFO L268 CegarLoopResult]: For program point L6-2(line 6) no Hoare annotation was computed. [2020-07-01 13:03:09,640 INFO L268 CegarLoopResult]: For program point ULTIMATE.startErr0REQUIRES_VIOLATION(line 5) no Hoare annotation was computed. [2020-07-01 13:03:09,640 INFO L268 CegarLoopResult]: For program point L6-3(line 6) no Hoare annotation was computed. [2020-07-01 13:03:09,640 INFO L268 CegarLoopResult]: For program point L6-4(line 6) no Hoare annotation was computed. [2020-07-01 13:03:09,643 INFO L308 ceAbstractionStarter]: Did not count any witness invariants because Icfg is not BoogieIcfg [2020-07-01 13:03:09,651 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-07-01 13:03:09,652 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-07-01 13:03:09,658 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-07-01 13:03:09,658 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-07-01 13:03:09,660 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 01:03:09 BasicIcfg [2020-07-01 13:03:09,660 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-01 13:03:09,661 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-07-01 13:03:09,661 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-07-01 13:03:09,665 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-07-01 13:03:09,666 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 13:03:09,666 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 01.07 01:03:07" (1/5) ... [2020-07-01 13:03:09,666 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6a16c1e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.07 01:03:09, skipping insertion in model container [2020-07-01 13:03:09,667 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 13:03:09,667 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 01:03:08" (2/5) ... [2020-07-01 13:03:09,667 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6a16c1e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.07 01:03:09, skipping insertion in model container [2020-07-01 13:03:09,667 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 13:03:09,667 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 01:03:08" (3/5) ... [2020-07-01 13:03:09,668 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6a16c1e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 01:03:09, skipping insertion in model container [2020-07-01 13:03:09,668 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 13:03:09,668 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 01:03:08" (4/5) ... [2020-07-01 13:03:09,668 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6a16c1e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 01:03:09, skipping insertion in model container [2020-07-01 13:03:09,668 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 13:03:09,668 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 01:03:09" (5/5) ... [2020-07-01 13:03:09,670 INFO L371 chiAutomizerObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-07-01 13:03:09,695 INFO L356 BuchiCegarLoop]: Interprodecural is true [2020-07-01 13:03:09,696 INFO L357 BuchiCegarLoop]: Hoare is true [2020-07-01 13:03:09,696 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-07-01 13:03:09,696 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-01 13:03:09,696 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-01 13:03:09,696 INFO L361 BuchiCegarLoop]: Difference is false [2020-07-01 13:03:09,696 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-01 13:03:09,696 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-07-01 13:03:09,700 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 39 states. [2020-07-01 13:03:09,706 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 17 [2020-07-01 13:03:09,706 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 13:03:09,706 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 13:03:09,710 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-07-01 13:03:09,710 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1] [2020-07-01 13:03:09,710 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2020-07-01 13:03:09,711 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 39 states. [2020-07-01 13:03:09,713 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 17 [2020-07-01 13:03:09,713 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 13:03:09,713 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 13:03:09,713 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-07-01 13:03:09,714 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1] [2020-07-01 13:03:09,718 INFO L794 eck$LassoCheckResult]: Stem: 31#ULTIMATE.startENTRYtrue [105] ULTIMATE.startENTRY-->L-1: Formula: (and (< 0 |v_#StackHeapBarrier_1|) (= |v_#NULL.base_1| 0) (= |v_#valid_1| (store |v_#valid_2| 0 0)) (= |v_#NULL.offset_1| 0)) InVars {#StackHeapBarrier=|v_#StackHeapBarrier_1|, #valid=|v_#valid_2|} OutVars{#NULL.offset=|v_#NULL.offset_1|, #StackHeapBarrier=|v_#StackHeapBarrier_1|, #NULL.base=|v_#NULL.base_1|, #valid=|v_#valid_1|} AuxVars[] AssignedVars[#valid, #NULL.offset, #NULL.base] 10#L-1true [151] L-1-->L17-1: Formula: (and (= v_ULTIMATE.start_main_~x~0.offset_1 |v_ULTIMATE.start_main_#t~malloc0.offset_1|) (= v_ULTIMATE.start_main_~x~0.base_1 |v_ULTIMATE.start_main_#t~malloc0.base_1|) (< |v_#StackHeapBarrier_2| |v_ULTIMATE.start_main_#t~malloc0.base_1|) (< 0 |v_ULTIMATE.start_main_#t~malloc0.base_1|) (= |v_#length_1| (store |v_#length_2| |v_ULTIMATE.start_main_#t~malloc0.base_1| 4)) (= (store |v_#valid_4| |v_ULTIMATE.start_main_#t~malloc0.base_1| 1) |v_#valid_3|) (= 0 |v_ULTIMATE.start_main_#t~malloc0.offset_1|) (= 0 (select |v_#valid_4| |v_ULTIMATE.start_main_#t~malloc0.base_1|))) InVars {#StackHeapBarrier=|v_#StackHeapBarrier_2|, #length=|v_#length_2|, #valid=|v_#valid_4|} OutVars{ULTIMATE.start_main_~x~0.offset=v_ULTIMATE.start_main_~x~0.offset_1, ULTIMATE.start_main_#t~malloc0.offset=|v_ULTIMATE.start_main_#t~malloc0.offset_1|, ULTIMATE.start_main_~x~0.base=v_ULTIMATE.start_main_~x~0.base_1, ULTIMATE.start_main_#t~malloc0.base=|v_ULTIMATE.start_main_#t~malloc0.base_1|, #StackHeapBarrier=|v_#StackHeapBarrier_2|, ULTIMATE.start_main_#t~short4=|v_ULTIMATE.start_main_#t~short4_1|, ULTIMATE.start_main_#t~mem7=|v_ULTIMATE.start_main_#t~mem7_1|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|, #valid=|v_#valid_3|, ULTIMATE.start_main_#t~mem2=|v_ULTIMATE.start_main_#t~mem2_1|, ULTIMATE.start_main_#t~mem1=|v_ULTIMATE.start_main_#t~mem1_1|, #length=|v_#length_1|, ULTIMATE.start_main_#t~mem6=|v_ULTIMATE.start_main_#t~mem6_1|, ULTIMATE.start_main_#t~mem5=|v_ULTIMATE.start_main_#t~mem5_1|, ULTIMATE.start_main_#t~mem3=|v_ULTIMATE.start_main_#t~mem3_1|} AuxVars[] AssignedVars[ULTIMATE.start_main_~x~0.offset, ULTIMATE.start_main_#t~malloc0.offset, ULTIMATE.start_main_~x~0.base, ULTIMATE.start_main_#t~malloc0.base, ULTIMATE.start_main_#t~short4, ULTIMATE.start_main_#t~mem7, ULTIMATE.start_main_#res, #valid, ULTIMATE.start_main_#t~mem2, ULTIMATE.start_main_#t~mem1, #length, ULTIMATE.start_main_#t~mem6, ULTIMATE.start_main_#t~mem5, ULTIMATE.start_main_#t~mem3] 20#L17-1true [2020-07-01 13:03:09,719 INFO L796 eck$LassoCheckResult]: Loop: 20#L17-1true [91] L17-1-->L5-1: Formula: (and (= 1 (select |v_#valid_5| v_ULTIMATE.start_main_~x~0.base_4)) (<= 0 v_ULTIMATE.start_main_~x~0.offset_4) (= |v_ULTIMATE.start_main_#t~mem1_2| (select (select |v_#memory_int_1| v_ULTIMATE.start_main_~x~0.base_4) v_ULTIMATE.start_main_~x~0.offset_4)) (<= (+ v_ULTIMATE.start_main_~x~0.offset_4 4) (select |v_#length_3| v_ULTIMATE.start_main_~x~0.base_4))) InVars {ULTIMATE.start_main_~x~0.offset=v_ULTIMATE.start_main_~x~0.offset_4, #memory_int=|v_#memory_int_1|, #length=|v_#length_3|, ULTIMATE.start_main_~x~0.base=v_ULTIMATE.start_main_~x~0.base_4, #valid=|v_#valid_5|} OutVars{#valid=|v_#valid_5|, ULTIMATE.start_main_~x~0.offset=v_ULTIMATE.start_main_~x~0.offset_4, #memory_int=|v_#memory_int_1|, ULTIMATE.start_main_#t~mem1=|v_ULTIMATE.start_main_#t~mem1_2|, #length=|v_#length_3|, ULTIMATE.start_main_~x~0.base=v_ULTIMATE.start_main_~x~0.base_4} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~mem1] 17#L5-1true [156] L5-1-->L6: Formula: (< 0 |v_ULTIMATE.start_main_#t~mem1_6|) InVars {ULTIMATE.start_main_#t~mem1=|v_ULTIMATE.start_main_#t~mem1_6|} OutVars{ULTIMATE.start_main_#t~mem1=|v_ULTIMATE.start_main_#t~mem1_5|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~mem1] 22#L6true [94] L6-->L6-1: Formula: (and (<= 0 v_ULTIMATE.start_main_~x~0.offset_6) (= (select (select |v_#memory_int_2| v_ULTIMATE.start_main_~x~0.base_7) v_ULTIMATE.start_main_~x~0.offset_6) |v_ULTIMATE.start_main_#t~mem2_2|) (= 1 (select |v_#valid_7| v_ULTIMATE.start_main_~x~0.base_7)) (<= (+ v_ULTIMATE.start_main_~x~0.offset_6 4) (select |v_#length_5| v_ULTIMATE.start_main_~x~0.base_7))) InVars {ULTIMATE.start_main_~x~0.offset=v_ULTIMATE.start_main_~x~0.offset_6, #memory_int=|v_#memory_int_2|, #length=|v_#length_5|, ULTIMATE.start_main_~x~0.base=v_ULTIMATE.start_main_~x~0.base_7, #valid=|v_#valid_7|} OutVars{#valid=|v_#valid_7|, ULTIMATE.start_main_#t~mem2=|v_ULTIMATE.start_main_#t~mem2_2|, ULTIMATE.start_main_~x~0.offset=v_ULTIMATE.start_main_~x~0.offset_6, #memory_int=|v_#memory_int_2|, #length=|v_#length_5|, ULTIMATE.start_main_~x~0.base=v_ULTIMATE.start_main_~x~0.base_7} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~mem2] 19#L6-1true [162] L6-1-->L6-2: Formula: (and (not |v_ULTIMATE.start_main_#t~short4_2|) (> 0 (+ |v_ULTIMATE.start_main_#t~mem2_3| 5))) InVars {ULTIMATE.start_main_#t~mem2=|v_ULTIMATE.start_main_#t~mem2_3|} OutVars{ULTIMATE.start_main_#t~mem2=|v_ULTIMATE.start_main_#t~mem2_3|, ULTIMATE.start_main_#t~short4=|v_ULTIMATE.start_main_#t~short4_2|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~short4] 40#L6-2true [123] L6-2-->L6-6: Formula: (not |v_ULTIMATE.start_main_#t~short4_5|) InVars {ULTIMATE.start_main_#t~short4=|v_ULTIMATE.start_main_#t~short4_5|} OutVars{ULTIMATE.start_main_#t~short4=|v_ULTIMATE.start_main_#t~short4_5|} AuxVars[] AssignedVars[] 32#L6-6true [107] L6-6-->L17: Formula: (not |v_ULTIMATE.start_main_#t~short4_9|) InVars {ULTIMATE.start_main_#t~short4=|v_ULTIMATE.start_main_#t~short4_9|} OutVars{ULTIMATE.start_main_#t~mem2=|v_ULTIMATE.start_main_#t~mem2_5|, ULTIMATE.start_main_#t~short4=|v_ULTIMATE.start_main_#t~short4_8|, ULTIMATE.start_main_#t~mem3=|v_ULTIMATE.start_main_#t~mem3_5|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~short4, ULTIMATE.start_main_#t~mem2, ULTIMATE.start_main_#t~mem3] 23#L17true [97] L17-->L17-1: Formula: (and (= (store |v_#memory_int_14| v_ULTIMATE.start_main_~x~0.base_31 (store (select |v_#memory_int_14| v_ULTIMATE.start_main_~x~0.base_31) v_ULTIMATE.start_main_~x~0.offset_22 0)) |v_#memory_int_13|) (<= (+ v_ULTIMATE.start_main_~x~0.offset_22 4) (select |v_#length_21| v_ULTIMATE.start_main_~x~0.base_31)) (= 1 (select |v_#valid_23| v_ULTIMATE.start_main_~x~0.base_31)) (<= 0 v_ULTIMATE.start_main_~x~0.offset_22)) InVars {#memory_int=|v_#memory_int_14|, ULTIMATE.start_main_~x~0.offset=v_ULTIMATE.start_main_~x~0.offset_22, #length=|v_#length_21|, ULTIMATE.start_main_~x~0.base=v_ULTIMATE.start_main_~x~0.base_31, #valid=|v_#valid_23|} OutVars{#memory_int=|v_#memory_int_13|, ULTIMATE.start_main_~x~0.offset=v_ULTIMATE.start_main_~x~0.offset_22, #length=|v_#length_21|, ULTIMATE.start_main_~x~0.base=v_ULTIMATE.start_main_~x~0.base_31, #valid=|v_#valid_23|} AuxVars[] AssignedVars[#memory_int] 20#L17-1true [2020-07-01 13:03:09,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 13:03:09,720 INFO L82 PathProgramCache]: Analyzing trace with hash 4367, now seen corresponding path program 1 times [2020-07-01 13:03:09,720 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 13:03:09,720 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624842859] [2020-07-01 13:03:09,721 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 13:03:09,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 13:03:09,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 13:03:09,753 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 13:03:09,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 13:03:09,754 INFO L82 PathProgramCache]: Analyzing trace with hash 1164205675, now seen corresponding path program 1 times [2020-07-01 13:03:09,754 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 13:03:09,755 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362810377] [2020-07-01 13:03:09,755 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 13:03:09,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 13:03:09,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-01 13:03:09,808 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362810377] [2020-07-01 13:03:09,808 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-01 13:03:09,808 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-01 13:03:09,809 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059652708] [2020-07-01 13:03:09,809 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-07-01 13:03:09,810 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-01 13:03:09,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-01 13:03:09,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-01 13:03:09,811 INFO L87 Difference]: Start difference. First operand 39 states. Second operand 5 states. [2020-07-01 13:03:10,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-01 13:03:10,142 INFO L93 Difference]: Finished difference Result 76 states and 129 transitions. [2020-07-01 13:03:10,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-01 13:03:10,147 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer has thrown an exception: java.lang.AssertionError: unknown kind of automaton at de.uni_freiburg.informatik.ultimate.automata.AutomatonDefinitionPrinter.printAutomaton(AutomatonDefinitionPrinter.java:349) at de.uni_freiburg.informatik.ultimate.automata.AutomatonDefinitionPrinter.toString(AutomatonDefinitionPrinter.java:186) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.TermcompProofBenchmark.reportFiniteModule(TermcompProofBenchmark.java:61) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiCegarLoop.refineFinite(BuchiCegarLoop.java:978) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiCegarLoop.iterate(BuchiCegarLoop.java:532) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver.doTerminationAnalysis(BuchiAutomizerObserver.java:141) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver.finish(BuchiAutomizerObserver.java:380) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:317) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2020-07-01 13:03:10,151 INFO L168 Benchmark]: Toolchain (without parser) took 2180.55 ms. Allocated memory was 514.9 MB in the beginning and 576.7 MB in the end (delta: 61.9 MB). Free memory was 439.1 MB in the beginning and 494.0 MB in the end (delta: -54.9 MB). Peak memory consumption was 7.0 MB. Max. memory is 50.3 GB. [2020-07-01 13:03:10,152 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 514.9 MB. Free memory is still 459.1 MB. There was no memory consumed. Max. memory is 50.3 GB. [2020-07-01 13:03:10,152 INFO L168 Benchmark]: CACSL2BoogieTranslator took 298.65 ms. Allocated memory was 514.9 MB in the beginning and 546.8 MB in the end (delta: 32.0 MB). Free memory was 438.4 MB in the beginning and 514.2 MB in the end (delta: -75.8 MB). Peak memory consumption was 28.6 MB. Max. memory is 50.3 GB. [2020-07-01 13:03:10,153 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.71 ms. Allocated memory is still 546.8 MB. Free memory was 514.2 MB in the beginning and 512.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 50.3 GB. [2020-07-01 13:03:10,154 INFO L168 Benchmark]: Boogie Preprocessor took 24.12 ms. Allocated memory is still 546.8 MB. Free memory was 512.8 MB in the beginning and 510.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 50.3 GB. [2020-07-01 13:03:10,155 INFO L168 Benchmark]: RCFGBuilder took 326.04 ms. Allocated memory is still 546.8 MB. Free memory was 510.8 MB in the beginning and 489.4 MB in the end (delta: 21.3 MB). Peak memory consumption was 21.3 MB. Max. memory is 50.3 GB. [2020-07-01 13:03:10,155 INFO L168 Benchmark]: BlockEncodingV2 took 111.03 ms. Allocated memory is still 546.8 MB. Free memory was 489.4 MB in the beginning and 480.7 MB in the end (delta: 8.8 MB). Peak memory consumption was 8.8 MB. Max. memory is 50.3 GB. [2020-07-01 13:03:10,156 INFO L168 Benchmark]: TraceAbstraction took 888.72 ms. Allocated memory is still 546.8 MB. Free memory was 480.0 MB in the beginning and 397.8 MB in the end (delta: 82.2 MB). Peak memory consumption was 82.2 MB. Max. memory is 50.3 GB. [2020-07-01 13:03:10,156 INFO L168 Benchmark]: BuchiAutomizer took 487.74 ms. Allocated memory was 546.8 MB in the beginning and 576.7 MB in the end (delta: 29.9 MB). Free memory was 397.8 MB in the beginning and 494.0 MB in the end (delta: -96.1 MB). There was no memory consumed. Max. memory is 50.3 GB. [2020-07-01 13:03:10,160 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 44 locations, 49 edges - StatisticsResult: Encoded RCFG 39 locations, 67 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 514.9 MB. Free memory is still 459.1 MB. There was no memory consumed. Max. memory is 50.3 GB. * CACSL2BoogieTranslator took 298.65 ms. Allocated memory was 514.9 MB in the beginning and 546.8 MB in the end (delta: 32.0 MB). Free memory was 438.4 MB in the beginning and 514.2 MB in the end (delta: -75.8 MB). Peak memory consumption was 28.6 MB. Max. memory is 50.3 GB. * Boogie Procedure Inliner took 38.71 ms. Allocated memory is still 546.8 MB. Free memory was 514.2 MB in the beginning and 512.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 50.3 GB. * Boogie Preprocessor took 24.12 ms. Allocated memory is still 546.8 MB. Free memory was 512.8 MB in the beginning and 510.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 50.3 GB. * RCFGBuilder took 326.04 ms. Allocated memory is still 546.8 MB. Free memory was 510.8 MB in the beginning and 489.4 MB in the end (delta: 21.3 MB). Peak memory consumption was 21.3 MB. Max. memory is 50.3 GB. * BlockEncodingV2 took 111.03 ms. Allocated memory is still 546.8 MB. Free memory was 489.4 MB in the beginning and 480.7 MB in the end (delta: 8.8 MB). Peak memory consumption was 8.8 MB. Max. memory is 50.3 GB. * TraceAbstraction took 888.72 ms. Allocated memory is still 546.8 MB. Free memory was 480.0 MB in the beginning and 397.8 MB in the end (delta: 82.2 MB). Peak memory consumption was 82.2 MB. Max. memory is 50.3 GB. * BuchiAutomizer took 487.74 ms. Allocated memory was 546.8 MB in the beginning and 576.7 MB in the end (delta: 29.9 MB). Free memory was 397.8 MB in the beginning and 494.0 MB in the end (delta: -96.1 MB). There was no memory consumed. Max. memory is 50.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #StackHeapBarrier - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #StackHeapBarrier * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 11]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 5]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 10]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 5]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 10]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 13]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 6]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 13]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 6]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 11]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 6]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 7]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 13]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 7]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 13]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 6]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 8]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 17]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 8]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 17]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - AllSpecificationsHoldResult: All specifications hold 20 specifications checked. All of them hold - InvariantResult [Line: 5]: Loop Invariant [2020-07-01 13:03:10,170 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-07-01 13:03:10,170 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-07-01 13:03:10,171 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-07-01 13:03:10,171 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier Derived loop invariant: ((4 == unknown-#length-unknown[x] && 1 <= unknown-#StackHeapBarrier-unknown) && 1 == \valid[x]) && 0 == x - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 39 locations, 20 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.7s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 38 SDtfs, 167 SDslu, 2 SDs, 0 SdLazy, 137 SolverSat, 37 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 2 NumberOfFragments, 17 HoareAnnotationTreeSize, 1 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 1 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 48 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: - ExceptionOrErrorResult: AssertionError: unknown kind of automaton de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: AssertionError: unknown kind of automaton: de.uni_freiburg.informatik.ultimate.automata.AutomatonDefinitionPrinter.printAutomaton(AutomatonDefinitionPrinter.java:349) RESULT: Ultimate could not prove your program: Toolchain returned no result. !SESSION 2020-07-01 13:03:04.293 ----------------------------------------------- eclipse.buildId=unknown java.version=1.8.0_242 java.vendor=Oracle Corporation BootLoader constants: OS=linux, ARCH=x86_64, WS=gtk, NL=en_US Framework arguments: -tc ./../AutomizerAndBuchiAutomizerCInlineWithBlockEncoding.xml -s ./../termcomp2017.epf -i /export/starexec/sandbox/benchmark/theBenchmark.c Command-line arguments: -os linux -ws gtk -arch x86_64 -consoleLog -data @user.home/.ultimate -tc ./../AutomizerAndBuchiAutomizerCInlineWithBlockEncoding.xml -s ./../termcomp2017.epf -data /export/starexec/sandbox/tmp/BenchExec_run_uKCCT8/tmp -i /export/starexec/sandbox/benchmark/theBenchmark.c !ENTRY org.eclipse.core.resources 2 10035 2020-07-01 13:03:10.395 !MESSAGE The workspace will exit with unsaved changes in this session. Received shutdown request... Ultimate: GTK+ Version Check