/export/starexec/sandbox/solver/bin/starexec_run_default /export/starexec/sandbox/benchmark/theBenchmark.c /export/starexec/sandbox/output/output_files -------------------------------------------------------------------------------- MAYBE Ultimate: Cannot open display: This is Ultimate 0.1.25-34f2e62 [2020-07-01 12:29:51,930 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-01 12:29:51,943 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-01 12:29:51,955 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-01 12:29:51,955 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-01 12:29:51,956 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-01 12:29:51,957 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-01 12:29:51,959 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-01 12:29:51,960 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-01 12:29:51,961 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-01 12:29:51,962 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-01 12:29:51,963 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-01 12:29:51,963 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-01 12:29:51,964 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-01 12:29:51,965 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-01 12:29:51,966 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-01 12:29:51,967 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-01 12:29:51,968 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-01 12:29:51,969 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-01 12:29:51,971 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-01 12:29:51,972 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-01 12:29:51,973 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-01 12:29:51,974 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-01 12:29:51,975 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-01 12:29:51,977 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-01 12:29:51,977 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-01 12:29:51,977 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-01 12:29:51,978 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-01 12:29:51,978 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-01 12:29:51,979 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-01 12:29:51,980 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-01 12:29:51,980 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-01 12:29:51,981 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-01 12:29:51,982 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-01 12:29:51,982 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-01 12:29:51,983 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-01 12:29:51,983 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-01 12:29:51,983 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-01 12:29:51,984 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-01 12:29:51,984 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-01 12:29:51,985 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-01 12:29:51,986 INFO L101 SettingsManager]: Beginning loading settings from /export/starexec/sandbox/solver/bin/./../termcomp2017.epf [2020-07-01 12:29:52,000 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-01 12:29:52,000 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-01 12:29:52,001 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-01 12:29:52,001 INFO L138 SettingsManager]: * Rewrite not-equals=true [2020-07-01 12:29:52,001 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-01 12:29:52,002 INFO L138 SettingsManager]: * Minimize states using LBE with the strategy=SINGLE [2020-07-01 12:29:52,002 INFO L138 SettingsManager]: * Use SBE=true [2020-07-01 12:29:52,002 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-07-01 12:29:52,002 INFO L138 SettingsManager]: * Use old map elimination=false [2020-07-01 12:29:52,002 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-07-01 12:29:52,003 INFO L138 SettingsManager]: * Buchi interpolant automaton construction strategy=DANDELION [2020-07-01 12:29:52,003 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-07-01 12:29:52,003 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-07-01 12:29:52,003 INFO L138 SettingsManager]: * Construct termination proof for TermComp=true [2020-07-01 12:29:52,003 INFO L138 SettingsManager]: * Command for external solver (GNTA synthesis)=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:29:52,003 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-01 12:29:52,004 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-07-01 12:29:52,004 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-01 12:29:52,004 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-01 12:29:52,004 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-07-01 12:29:52,004 INFO L138 SettingsManager]: * How to treat unsigned ints differently from normal ones=IGNORE [2020-07-01 12:29:52,005 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-01 12:29:52,005 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-01 12:29:52,005 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-07-01 12:29:52,005 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 [2020-07-01 12:29:52,005 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-01 12:29:52,005 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-01 12:29:52,006 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-01 12:29:52,006 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-01 12:29:52,175 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-01 12:29:52,188 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-01 12:29:52,192 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-01 12:29:52,193 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-01 12:29:52,193 INFO L275 PluginConnector]: CDTParser initialized [2020-07-01 12:29:52,194 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /export/starexec/sandbox/benchmark/theBenchmark.c [2020-07-01 12:29:52,269 INFO L220 CDTParser]: Created temporary CDT project at /export/starexec/sandbox/tmp/BenchExec_run_irXGH7/tmp/11cbe3011cf64de38a96ce96af32f4b6/FLAGc016fa2f0 [2020-07-01 12:29:52,626 INFO L306 CDTParser]: Found 1 translation units. [2020-07-01 12:29:52,627 INFO L160 CDTParser]: Scanning /export/starexec/sandbox/benchmark/theBenchmark.c [2020-07-01 12:29:52,627 WARN L117 ultiparseSymbolTable]: System include stdlib.h could not be resolved by CDT -- only built-in system includes are available. [2020-07-01 12:29:52,633 INFO L349 CDTParser]: About to delete temporary CDT project at /export/starexec/sandbox/tmp/BenchExec_run_irXGH7/tmp/11cbe3011cf64de38a96ce96af32f4b6/FLAGc016fa2f0 [2020-07-01 12:29:53,046 INFO L357 CDTParser]: Successfully deleted /export/starexec/sandbox/tmp/BenchExec_run_irXGH7/tmp/11cbe3011cf64de38a96ce96af32f4b6 [2020-07-01 12:29:53,058 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-01 12:29:53,059 INFO L131 ToolchainWalker]: Walking toolchain with 7 elements. [2020-07-01 12:29:53,060 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-01 12:29:53,060 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-01 12:29:53,064 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-01 12:29:53,065 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.07 12:29:53" (1/1) ... [2020-07-01 12:29:53,068 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c6e7630 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:29:53, skipping insertion in model container [2020-07-01 12:29:53,068 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.07 12:29:53" (1/1) ... [2020-07-01 12:29:53,076 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-01 12:29:53,093 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-01 12:29:53,313 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-01 12:29:53,324 INFO L203 MainTranslator]: Completed pre-run [2020-07-01 12:29:53,341 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-01 12:29:53,356 INFO L208 MainTranslator]: Completed translation [2020-07-01 12:29:53,356 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:29:53 WrapperNode [2020-07-01 12:29:53,357 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-01 12:29:53,357 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-01 12:29:53,358 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-01 12:29:53,358 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-01 12:29:53,366 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:29:53" (1/1) ... [2020-07-01 12:29:53,375 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:29:53" (1/1) ... [2020-07-01 12:29:53,394 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-01 12:29:53,395 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-01 12:29:53,395 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-01 12:29:53,395 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-01 12:29:53,404 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:29:53" (1/1) ... [2020-07-01 12:29:53,404 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:29:53" (1/1) ... [2020-07-01 12:29:53,406 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:29:53" (1/1) ... [2020-07-01 12:29:53,406 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:29:53" (1/1) ... [2020-07-01 12:29:53,411 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:29:53" (1/1) ... [2020-07-01 12:29:53,415 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:29:53" (1/1) ... [2020-07-01 12:29:53,416 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:29:53" (1/1) ... [2020-07-01 12:29:53,418 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-01 12:29:53,419 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-01 12:29:53,419 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-01 12:29:53,419 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-01 12:29:53,420 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:29:53" (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 12:29:53,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-01 12:29:53,491 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-01 12:29:53,491 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-01 12:29:53,491 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-01 12:29:53,491 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-01 12:29:53,491 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-01 12:29:53,725 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-01 12:29:53,725 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-07-01 12:29:53,729 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 12:29:53 BoogieIcfgContainer [2020-07-01 12:29:53,729 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-01 12:29:53,730 INFO L113 PluginConnector]: ------------------------BlockEncodingV2---------------------------- [2020-07-01 12:29:53,730 INFO L271 PluginConnector]: Initializing BlockEncodingV2... [2020-07-01 12:29:53,732 INFO L275 PluginConnector]: BlockEncodingV2 initialized [2020-07-01 12:29:53,733 INFO L185 PluginConnector]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 12:29:53" (1/1) ... [2020-07-01 12:29:53,747 INFO L313 BlockEncoder]: Initial Icfg 26 locations, 29 edges [2020-07-01 12:29:53,749 INFO L258 BlockEncoder]: Using Remove infeasible edges [2020-07-01 12:29:53,749 INFO L263 BlockEncoder]: Using Maximize final states [2020-07-01 12:29:53,750 INFO L270 BlockEncoder]: Using Minimize states even if more edges are added than removed.=false [2020-07-01 12:29:53,750 INFO L276 BlockEncoder]: Using Minimize states using LBE with the strategy=SINGLE [2020-07-01 12:29:53,752 INFO L296 BlockEncoder]: Using Remove sink states [2020-07-01 12:29:53,753 INFO L171 BlockEncoder]: Using Apply optimizations until nothing changes=true [2020-07-01 12:29:53,754 INFO L179 BlockEncoder]: Using Rewrite not-equals [2020-07-01 12:29:53,780 INFO L185 BlockEncoder]: Using Use SBE [2020-07-01 12:29:53,806 INFO L200 BlockEncoder]: SBE split 13 edges [2020-07-01 12:29:53,810 INFO L70 emoveInfeasibleEdges]: Removed 1 edges and 0 locations because of local infeasibility [2020-07-01 12:29:53,812 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-07-01 12:29:53,834 INFO L100 BaseMinimizeStates]: Removed 8 edges and 4 locations by large block encoding [2020-07-01 12:29:53,837 INFO L70 RemoveSinkStates]: Removed 3 edges and 2 locations by removing sink states [2020-07-01 12:29:53,838 INFO L70 emoveInfeasibleEdges]: Removed 0 edges and 0 locations because of local infeasibility [2020-07-01 12:29:53,839 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-07-01 12:29:53,839 INFO L100 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2020-07-01 12:29:53,840 INFO L70 RemoveSinkStates]: Removed 0 edges and 0 locations by removing sink states [2020-07-01 12:29:53,840 INFO L313 BlockEncoder]: Encoded RCFG 20 locations, 36 edges [2020-07-01 12:29:53,840 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 12:29:53 BasicIcfg [2020-07-01 12:29:53,841 INFO L132 PluginConnector]: ------------------------ END BlockEncodingV2---------------------------- [2020-07-01 12:29:53,842 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-01 12:29:53,842 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-01 12:29:53,845 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-01 12:29:53,846 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.07 12:29:53" (1/4) ... [2020-07-01 12:29:53,846 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@775bef88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.07 12:29:53, skipping insertion in model container [2020-07-01 12:29:53,847 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:29:53" (2/4) ... [2020-07-01 12:29:53,847 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@775bef88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.07 12:29:53, skipping insertion in model container [2020-07-01 12:29:53,847 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 12:29:53" (3/4) ... [2020-07-01 12:29:53,848 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@775bef88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 12:29:53, skipping insertion in model container [2020-07-01 12:29:53,848 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 12:29:53" (4/4) ... [2020-07-01 12:29:53,849 INFO L109 eAbstractionObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-07-01 12:29:53,860 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2020-07-01 12:29:53,867 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 10 error locations. [2020-07-01 12:29:53,880 INFO L251 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2020-07-01 12:29:53,904 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-01 12:29:53,904 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-01 12:29:53,904 INFO L377 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2020-07-01 12:29:53,904 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-01 12:29:53,904 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-01 12:29:53,905 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-01 12:29:53,905 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-01 12:29:53,905 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-01 12:29:53,920 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2020-07-01 12:29:53,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-07-01 12:29:53,926 INFO L414 BasicCegarLoop]: Found error trace [2020-07-01 12:29:53,926 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-07-01 12:29:53,927 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-07-01 12:29:53,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:29:53,933 INFO L82 PathProgramCache]: Analyzing trace with hash 139153826, now seen corresponding path program 1 times [2020-07-01 12:29:53,942 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 12:29:53,943 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090057530] [2020-07-01 12:29:53,943 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 12:29:54,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 12:29:54,103 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 12:29:54,103 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090057530] [2020-07-01 12:29:54,104 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-01 12:29:54,105 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-01 12:29:54,105 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408254584] [2020-07-01 12:29:54,110 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-01 12:29:54,111 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-01 12:29:54,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-01 12:29:54,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-01 12:29:54,128 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 3 states. [2020-07-01 12:29:54,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-01 12:29:54,216 INFO L93 Difference]: Finished difference Result 36 states and 63 transitions. [2020-07-01 12:29:54,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-01 12:29:54,218 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-07-01 12:29:54,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-01 12:29:54,230 INFO L225 Difference]: With dead ends: 36 [2020-07-01 12:29:54,230 INFO L226 Difference]: Without dead ends: 20 [2020-07-01 12:29:54,234 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 12:29:54,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-07-01 12:29:54,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2020-07-01 12:29:54,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-07-01 12:29:54,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 34 transitions. [2020-07-01 12:29:54,270 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 34 transitions. Word has length 5 [2020-07-01 12:29:54,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-01 12:29:54,270 INFO L479 AbstractCegarLoop]: Abstraction has 20 states and 34 transitions. [2020-07-01 12:29:54,270 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-01 12:29:54,270 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 34 transitions. [2020-07-01 12:29:54,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-07-01 12:29:54,271 INFO L414 BasicCegarLoop]: Found error trace [2020-07-01 12:29:54,271 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-07-01 12:29:54,273 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-01 12:29:54,273 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-07-01 12:29:54,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:29:54,273 INFO L82 PathProgramCache]: Analyzing trace with hash 139153857, now seen corresponding path program 1 times [2020-07-01 12:29:54,274 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 12:29:54,274 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450820640] [2020-07-01 12:29:54,274 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 12:29:54,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 12:29:54,298 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 12:29:54,299 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450820640] [2020-07-01 12:29:54,299 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-01 12:29:54,299 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-01 12:29:54,299 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626914397] [2020-07-01 12:29:54,301 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-01 12:29:54,301 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-01 12:29:54,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-01 12:29:54,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-01 12:29:54,302 INFO L87 Difference]: Start difference. First operand 20 states and 34 transitions. Second operand 3 states. [2020-07-01 12:29:54,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-01 12:29:54,354 INFO L93 Difference]: Finished difference Result 37 states and 63 transitions. [2020-07-01 12:29:54,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-01 12:29:54,355 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-07-01 12:29:54,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-01 12:29:54,356 INFO L225 Difference]: With dead ends: 37 [2020-07-01 12:29:54,356 INFO L226 Difference]: Without dead ends: 20 [2020-07-01 12:29:54,357 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 12:29:54,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-07-01 12:29:54,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2020-07-01 12:29:54,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-07-01 12:29:54,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 33 transitions. [2020-07-01 12:29:54,362 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 33 transitions. Word has length 5 [2020-07-01 12:29:54,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-01 12:29:54,362 INFO L479 AbstractCegarLoop]: Abstraction has 20 states and 33 transitions. [2020-07-01 12:29:54,362 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-01 12:29:54,363 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 33 transitions. [2020-07-01 12:29:54,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-07-01 12:29:54,363 INFO L414 BasicCegarLoop]: Found error trace [2020-07-01 12:29:54,363 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-07-01 12:29:54,363 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-01 12:29:54,364 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-07-01 12:29:54,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:29:54,364 INFO L82 PathProgramCache]: Analyzing trace with hash 139154818, now seen corresponding path program 1 times [2020-07-01 12:29:54,364 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 12:29:54,365 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379581177] [2020-07-01 12:29:54,365 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 12:29:54,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 12:29:54,402 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 12:29:54,403 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379581177] [2020-07-01 12:29:54,403 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-01 12:29:54,403 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-01 12:29:54,404 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277158920] [2020-07-01 12:29:54,404 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-01 12:29:54,404 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-01 12:29:54,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-01 12:29:54,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-01 12:29:54,405 INFO L87 Difference]: Start difference. First operand 20 states and 33 transitions. Second operand 4 states. [2020-07-01 12:29:54,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-01 12:29:54,482 INFO L93 Difference]: Finished difference Result 20 states and 33 transitions. [2020-07-01 12:29:54,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-01 12:29:54,482 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2020-07-01 12:29:54,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-01 12:29:54,483 INFO L225 Difference]: With dead ends: 20 [2020-07-01 12:29:54,483 INFO L226 Difference]: Without dead ends: 15 [2020-07-01 12:29:54,484 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-01 12:29:54,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-07-01 12:29:54,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-07-01 12:29:54,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-07-01 12:29:54,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 23 transitions. [2020-07-01 12:29:54,487 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 23 transitions. Word has length 5 [2020-07-01 12:29:54,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-01 12:29:54,487 INFO L479 AbstractCegarLoop]: Abstraction has 15 states and 23 transitions. [2020-07-01 12:29:54,487 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-01 12:29:54,487 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 23 transitions. [2020-07-01 12:29:54,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-07-01 12:29:54,488 INFO L414 BasicCegarLoop]: Found error trace [2020-07-01 12:29:54,488 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-07-01 12:29:54,488 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-01 12:29:54,488 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-07-01 12:29:54,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:29:54,489 INFO L82 PathProgramCache]: Analyzing trace with hash 139154820, now seen corresponding path program 1 times [2020-07-01 12:29:54,489 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 12:29:54,489 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417731176] [2020-07-01 12:29:54,489 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 12:29:54,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 12:29:54,527 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 12:29:54,527 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417731176] [2020-07-01 12:29:54,528 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-01 12:29:54,528 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-01 12:29:54,528 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329221150] [2020-07-01 12:29:54,528 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-01 12:29:54,529 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-01 12:29:54,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-01 12:29:54,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-01 12:29:54,529 INFO L87 Difference]: Start difference. First operand 15 states and 23 transitions. Second operand 4 states. [2020-07-01 12:29:54,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-01 12:29:54,606 INFO L93 Difference]: Finished difference Result 29 states and 40 transitions. [2020-07-01 12:29:54,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-01 12:29:54,607 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2020-07-01 12:29:54,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-01 12:29:54,607 INFO L225 Difference]: With dead ends: 29 [2020-07-01 12:29:54,607 INFO L226 Difference]: Without dead ends: 26 [2020-07-01 12:29:54,608 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-01 12:29:54,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-07-01 12:29:54,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 21. [2020-07-01 12:29:54,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-07-01 12:29:54,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 37 transitions. [2020-07-01 12:29:54,613 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 37 transitions. Word has length 5 [2020-07-01 12:29:54,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-01 12:29:54,613 INFO L479 AbstractCegarLoop]: Abstraction has 21 states and 37 transitions. [2020-07-01 12:29:54,614 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-01 12:29:54,614 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 37 transitions. [2020-07-01 12:29:54,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-07-01 12:29:54,614 INFO L414 BasicCegarLoop]: Found error trace [2020-07-01 12:29:54,614 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-07-01 12:29:54,614 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-01 12:29:54,615 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-07-01 12:29:54,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:29:54,615 INFO L82 PathProgramCache]: Analyzing trace with hash 139154821, now seen corresponding path program 1 times [2020-07-01 12:29:54,615 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 12:29:54,615 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340520864] [2020-07-01 12:29:54,616 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 12:29:54,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:29:54,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:29:54,660 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 12:29:54,661 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-01 12:29:54,661 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-07-01 12:29:54,680 INFO L308 ceAbstractionStarter]: Did not count any witness invariants because Icfg is not BoogieIcfg [2020-07-01 12:29:54,683 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 12:29:54 BasicIcfg [2020-07-01 12:29:54,683 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-01 12:29:54,684 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-07-01 12:29:54,684 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-07-01 12:29:54,687 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-07-01 12:29:54,687 INFO L96 BuchiAutomizer]: Another Plugin discovered errors, I will not analyze termination [2020-07-01 12:29:54,687 INFO L96 BuchiAutomizer]: Another Plugin discovered errors, I will not analyze termination [2020-07-01 12:29:54,687 INFO L96 BuchiAutomizer]: Another Plugin discovered errors, I will not analyze termination [2020-07-01 12:29:54,687 INFO L96 BuchiAutomizer]: Another Plugin discovered errors, I will not analyze termination [2020-07-01 12:29:54,688 INFO L96 BuchiAutomizer]: Another Plugin discovered errors, I will not analyze termination [2020-07-01 12:29:54,688 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-07-01 12:29:54,690 INFO L168 Benchmark]: Toolchain (without parser) took 1630.42 ms. Allocated memory was 649.6 MB in the beginning and 682.6 MB in the end (delta: 33.0 MB). Free memory was 557.4 MB in the beginning and 533.5 MB in the end (delta: 23.9 MB). Peak memory consumption was 57.0 MB. Max. memory is 50.3 GB. [2020-07-01 12:29:54,691 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 649.6 MB. Free memory is still 577.9 MB. There was no memory consumed. Max. memory is 50.3 GB. [2020-07-01 12:29:54,692 INFO L168 Benchmark]: CACSL2BoogieTranslator took 296.93 ms. Allocated memory was 649.6 MB in the beginning and 682.6 MB in the end (delta: 33.0 MB). Free memory was 557.4 MB in the beginning and 646.4 MB in the end (delta: -89.0 MB). Peak memory consumption was 28.4 MB. Max. memory is 50.3 GB. [2020-07-01 12:29:54,692 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.99 ms. Allocated memory is still 682.6 MB. Free memory was 646.4 MB in the beginning and 644.3 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 50.3 GB. [2020-07-01 12:29:54,693 INFO L168 Benchmark]: Boogie Preprocessor took 23.72 ms. Allocated memory is still 682.6 MB. Free memory was 644.3 MB in the beginning and 642.1 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 50.3 GB. [2020-07-01 12:29:54,693 INFO L168 Benchmark]: RCFGBuilder took 310.66 ms. Allocated memory is still 682.6 MB. Free memory was 642.1 MB in the beginning and 622.1 MB in the end (delta: 20.0 MB). Peak memory consumption was 20.0 MB. Max. memory is 50.3 GB. [2020-07-01 12:29:54,694 INFO L168 Benchmark]: BlockEncodingV2 took 110.96 ms. Allocated memory is still 682.6 MB. Free memory was 621.1 MB in the beginning and 614.6 MB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 50.3 GB. [2020-07-01 12:29:54,694 INFO L168 Benchmark]: TraceAbstraction took 841.21 ms. Allocated memory is still 682.6 MB. Free memory was 613.5 MB in the beginning and 534.6 MB in the end (delta: 78.9 MB). Peak memory consumption was 78.9 MB. Max. memory is 50.3 GB. [2020-07-01 12:29:54,695 INFO L168 Benchmark]: BuchiAutomizer took 4.25 ms. Allocated memory is still 682.6 MB. Free memory was 534.6 MB in the beginning and 533.5 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 50.3 GB. [2020-07-01 12:29:54,699 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 26 locations, 29 edges - StatisticsResult: Encoded RCFG 20 locations, 36 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 649.6 MB. Free memory is still 577.9 MB. There was no memory consumed. Max. memory is 50.3 GB. * CACSL2BoogieTranslator took 296.93 ms. Allocated memory was 649.6 MB in the beginning and 682.6 MB in the end (delta: 33.0 MB). Free memory was 557.4 MB in the beginning and 646.4 MB in the end (delta: -89.0 MB). Peak memory consumption was 28.4 MB. Max. memory is 50.3 GB. * Boogie Procedure Inliner took 36.99 ms. Allocated memory is still 682.6 MB. Free memory was 646.4 MB in the beginning and 644.3 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 50.3 GB. * Boogie Preprocessor took 23.72 ms. Allocated memory is still 682.6 MB. Free memory was 644.3 MB in the beginning and 642.1 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 50.3 GB. * RCFGBuilder took 310.66 ms. Allocated memory is still 682.6 MB. Free memory was 642.1 MB in the beginning and 622.1 MB in the end (delta: 20.0 MB). Peak memory consumption was 20.0 MB. Max. memory is 50.3 GB. * BlockEncodingV2 took 110.96 ms. Allocated memory is still 682.6 MB. Free memory was 621.1 MB in the beginning and 614.6 MB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 50.3 GB. * TraceAbstraction took 841.21 ms. Allocated memory is still 682.6 MB. Free memory was 613.5 MB in the beginning and 534.6 MB in the end (delta: 78.9 MB). Peak memory consumption was 78.9 MB. Max. memory is 50.3 GB. * BuchiAutomizer took 4.25 ms. Allocated memory is still 682.6 MB. Free memory was 534.6 MB in the beginning and 533.5 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 50.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 11]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L5] int i, j; [L6] int length = __VERIFIER_nondet_int(); [L7] COND TRUE length < 1 [L7] length = 1 [L8] int *arr = alloca(length); [L9] COND FALSE !(!arr) [L10] int *a = arr; [L11] \read(*a) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 20 locations, 10 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.7s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 16 SDtfs, 139 SDslu, 13 SDs, 0 SdLazy, 126 SolverSat, 18 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=4, 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, 5 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 25 NumberOfCodeBlocks, 25 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 16 ConstructedInterpolants, 0 QuantifiedInterpolants, 136 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 RESULT: Ultimate proved your program to be incorrect! !SESSION 2020-07-01 12:29:49.729 ----------------------------------------------- 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_irXGH7/tmp -i /export/starexec/sandbox/benchmark/theBenchmark.c !ENTRY org.eclipse.core.resources 2 10035 2020-07-01 12:29:54.934 !MESSAGE The workspace will exit with unsaved changes in this session. Received shutdown request... Ultimate: GTK+ Version Check