/export/starexec/sandbox2/solver/bin/starexec_run_default /export/starexec/sandbox2/benchmark/theBenchmark.c /export/starexec/sandbox2/output/output_files -------------------------------------------------------------------------------- MAYBE Ultimate: Cannot open display: This is Ultimate 0.1.25-34f2e62 [2020-07-01 12:22:21,717 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-01 12:22:21,720 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-01 12:22:21,731 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-01 12:22:21,731 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-01 12:22:21,732 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-01 12:22:21,733 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-01 12:22:21,735 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-01 12:22:21,736 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-01 12:22:21,737 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-01 12:22:21,738 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-01 12:22:21,739 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-01 12:22:21,739 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-01 12:22:21,740 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-01 12:22:21,741 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-01 12:22:21,742 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-01 12:22:21,742 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-01 12:22:21,743 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-01 12:22:21,745 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-01 12:22:21,747 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-01 12:22:21,748 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-01 12:22:21,749 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-01 12:22:21,750 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-01 12:22:21,751 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-01 12:22:21,753 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-01 12:22:21,753 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-01 12:22:21,753 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-01 12:22:21,754 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-01 12:22:21,755 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-01 12:22:21,755 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-01 12:22:21,756 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-01 12:22:21,756 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-01 12:22:21,757 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-01 12:22:21,758 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-01 12:22:21,759 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-01 12:22:21,759 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-01 12:22:21,759 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-01 12:22:21,760 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-01 12:22:21,760 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-01 12:22:21,760 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-01 12:22:21,761 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-01 12:22:21,762 INFO L101 SettingsManager]: Beginning loading settings from /export/starexec/sandbox2/solver/bin/./../termcomp2017.epf [2020-07-01 12:22:21,776 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-01 12:22:21,776 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-01 12:22:21,777 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-01 12:22:21,777 INFO L138 SettingsManager]: * Rewrite not-equals=true [2020-07-01 12:22:21,777 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-01 12:22:21,778 INFO L138 SettingsManager]: * Minimize states using LBE with the strategy=SINGLE [2020-07-01 12:22:21,778 INFO L138 SettingsManager]: * Use SBE=true [2020-07-01 12:22:21,778 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-07-01 12:22:21,778 INFO L138 SettingsManager]: * Use old map elimination=false [2020-07-01 12:22:21,778 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-07-01 12:22:21,779 INFO L138 SettingsManager]: * Buchi interpolant automaton construction strategy=DANDELION [2020-07-01 12:22:21,779 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-07-01 12:22:21,779 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-07-01 12:22:21,779 INFO L138 SettingsManager]: * Construct termination proof for TermComp=true [2020-07-01 12:22:21,779 INFO L138 SettingsManager]: * Command for external solver (GNTA synthesis)=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:22:21,779 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-01 12:22:21,780 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-07-01 12:22:21,780 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-01 12:22:21,780 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-01 12:22:21,780 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-07-01 12:22:21,780 INFO L138 SettingsManager]: * How to treat unsigned ints differently from normal ones=IGNORE [2020-07-01 12:22:21,781 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-01 12:22:21,781 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-01 12:22:21,781 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-07-01 12:22:21,781 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 [2020-07-01 12:22:21,781 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-01 12:22:21,781 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-01 12:22:21,782 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-01 12:22:21,782 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-01 12:22:21,946 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-01 12:22:21,959 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-01 12:22:21,963 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-01 12:22:21,964 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-01 12:22:21,964 INFO L275 PluginConnector]: CDTParser initialized [2020-07-01 12:22:21,965 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /export/starexec/sandbox2/benchmark/theBenchmark.c [2020-07-01 12:22:22,022 INFO L220 CDTParser]: Created temporary CDT project at /export/starexec/sandbox2/tmp/BenchExec_run__N0cCr/tmp/f21dfc9c9aff45469b47f9ca5cea7f3a/FLAGa71828ee3 [2020-07-01 12:22:22,363 INFO L306 CDTParser]: Found 1 translation units. [2020-07-01 12:22:22,364 INFO L160 CDTParser]: Scanning /export/starexec/sandbox2/benchmark/theBenchmark.c [2020-07-01 12:22:22,364 WARN L117 ultiparseSymbolTable]: System include stdlib.h could not be resolved by CDT -- only built-in system includes are available. [2020-07-01 12:22:22,371 INFO L349 CDTParser]: About to delete temporary CDT project at /export/starexec/sandbox2/tmp/BenchExec_run__N0cCr/tmp/f21dfc9c9aff45469b47f9ca5cea7f3a/FLAGa71828ee3 [2020-07-01 12:22:22,766 INFO L357 CDTParser]: Successfully deleted /export/starexec/sandbox2/tmp/BenchExec_run__N0cCr/tmp/f21dfc9c9aff45469b47f9ca5cea7f3a [2020-07-01 12:22:22,778 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-01 12:22:22,779 INFO L131 ToolchainWalker]: Walking toolchain with 7 elements. [2020-07-01 12:22:22,780 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-01 12:22:22,781 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-01 12:22:22,784 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-01 12:22:22,785 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.07 12:22:22" (1/1) ... [2020-07-01 12:22:22,788 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@574db99e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:22:22, skipping insertion in model container [2020-07-01 12:22:22,788 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.07 12:22:22" (1/1) ... [2020-07-01 12:22:22,796 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-01 12:22:22,814 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-01 12:22:23,049 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-01 12:22:23,061 INFO L203 MainTranslator]: Completed pre-run [2020-07-01 12:22:23,078 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-01 12:22:23,094 INFO L208 MainTranslator]: Completed translation [2020-07-01 12:22:23,094 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:22:23 WrapperNode [2020-07-01 12:22:23,094 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-01 12:22:23,095 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-01 12:22:23,095 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-01 12:22:23,095 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-01 12:22:23,105 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:22:23" (1/1) ... [2020-07-01 12:22:23,114 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:22:23" (1/1) ... [2020-07-01 12:22:23,136 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-01 12:22:23,137 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-01 12:22:23,137 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-01 12:22:23,137 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-01 12:22:23,147 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:22:23" (1/1) ... [2020-07-01 12:22:23,147 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:22:23" (1/1) ... [2020-07-01 12:22:23,149 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:22:23" (1/1) ... [2020-07-01 12:22:23,149 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:22:23" (1/1) ... [2020-07-01 12:22:23,156 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:22:23" (1/1) ... [2020-07-01 12:22:23,160 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:22:23" (1/1) ... [2020-07-01 12:22:23,162 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:22:23" (1/1) ... [2020-07-01 12:22:23,164 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-01 12:22:23,165 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-01 12:22:23,165 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-01 12:22:23,165 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-01 12:22:23,166 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:22:23" (1/1) ... No working directory specified, using /export/starexec/sandbox2/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 12:22:23,237 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-01 12:22:23,237 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-01 12:22:23,237 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-01 12:22:23,238 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-01 12:22:23,238 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-01 12:22:23,449 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-01 12:22:23,449 INFO L295 CfgBuilder]: Removed 9 assume(true) statements. [2020-07-01 12:22:23,453 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 12:22:23 BoogieIcfgContainer [2020-07-01 12:22:23,453 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-01 12:22:23,453 INFO L113 PluginConnector]: ------------------------BlockEncodingV2---------------------------- [2020-07-01 12:22:23,454 INFO L271 PluginConnector]: Initializing BlockEncodingV2... [2020-07-01 12:22:23,455 INFO L275 PluginConnector]: BlockEncodingV2 initialized [2020-07-01 12:22:23,456 INFO L185 PluginConnector]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 12:22:23" (1/1) ... [2020-07-01 12:22:23,470 INFO L313 BlockEncoder]: Initial Icfg 19 locations, 21 edges [2020-07-01 12:22:23,472 INFO L258 BlockEncoder]: Using Remove infeasible edges [2020-07-01 12:22:23,472 INFO L263 BlockEncoder]: Using Maximize final states [2020-07-01 12:22:23,473 INFO L270 BlockEncoder]: Using Minimize states even if more edges are added than removed.=false [2020-07-01 12:22:23,473 INFO L276 BlockEncoder]: Using Minimize states using LBE with the strategy=SINGLE [2020-07-01 12:22:23,475 INFO L296 BlockEncoder]: Using Remove sink states [2020-07-01 12:22:23,476 INFO L171 BlockEncoder]: Using Apply optimizations until nothing changes=true [2020-07-01 12:22:23,476 INFO L179 BlockEncoder]: Using Rewrite not-equals [2020-07-01 12:22:23,500 INFO L185 BlockEncoder]: Using Use SBE [2020-07-01 12:22:23,527 INFO L200 BlockEncoder]: SBE split 8 edges [2020-07-01 12:22:23,532 INFO L70 emoveInfeasibleEdges]: Removed 1 edges and 0 locations because of local infeasibility [2020-07-01 12:22:23,534 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-07-01 12:22:23,558 INFO L100 BaseMinimizeStates]: Removed 10 edges and 5 locations by large block encoding [2020-07-01 12:22:23,561 INFO L70 RemoveSinkStates]: Removed 9 edges and 2 locations by removing sink states [2020-07-01 12:22:23,563 INFO L70 emoveInfeasibleEdges]: Removed 0 edges and 0 locations because of local infeasibility [2020-07-01 12:22:23,563 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-07-01 12:22:23,563 INFO L100 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2020-07-01 12:22:23,564 INFO L70 RemoveSinkStates]: Removed 0 edges and 0 locations by removing sink states [2020-07-01 12:22:23,564 INFO L313 BlockEncoder]: Encoded RCFG 12 locations, 20 edges [2020-07-01 12:22:23,565 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 12:22:23 BasicIcfg [2020-07-01 12:22:23,565 INFO L132 PluginConnector]: ------------------------ END BlockEncodingV2---------------------------- [2020-07-01 12:22:23,566 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-01 12:22:23,567 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-01 12:22:23,570 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-01 12:22:23,570 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.07 12:22:22" (1/4) ... [2020-07-01 12:22:23,571 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@705f3172 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.07 12:22:23, skipping insertion in model container [2020-07-01 12:22:23,571 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:22:23" (2/4) ... [2020-07-01 12:22:23,571 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@705f3172 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.07 12:22:23, skipping insertion in model container [2020-07-01 12:22:23,572 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 12:22:23" (3/4) ... [2020-07-01 12:22:23,572 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@705f3172 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 12:22:23, skipping insertion in model container [2020-07-01 12:22:23,572 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 12:22:23" (4/4) ... [2020-07-01 12:22:23,574 INFO L109 eAbstractionObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-07-01 12:22:23,584 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2020-07-01 12:22:23,591 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-07-01 12:22:23,605 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-07-01 12:22:23,628 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-01 12:22:23,629 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-01 12:22:23,629 INFO L377 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2020-07-01 12:22:23,629 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-01 12:22:23,629 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-01 12:22:23,630 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-01 12:22:23,630 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-01 12:22:23,630 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-01 12:22:23,645 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2020-07-01 12:22:23,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-07-01 12:22:23,651 INFO L414 BasicCegarLoop]: Found error trace [2020-07-01 12:22:23,652 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-07-01 12:22:23,652 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4ASSERT_VIOLATIONILLEGAL_POINTER_ARITHMETIC, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-07-01 12:22:23,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:22:23,658 INFO L82 PathProgramCache]: Analyzing trace with hash 3653978, now seen corresponding path program 1 times [2020-07-01 12:22:23,668 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 12:22:23,668 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139769155] [2020-07-01 12:22:23,669 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 12:22:23,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 12:22:23,826 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 12:22:23,827 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139769155] [2020-07-01 12:22:23,828 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-01 12:22:23,828 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-01 12:22:23,829 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622068023] [2020-07-01 12:22:23,835 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-01 12:22:23,835 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-01 12:22:23,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-01 12:22:23,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-01 12:22:23,853 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 3 states. [2020-07-01 12:22:23,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-01 12:22:23,928 INFO L93 Difference]: Finished difference Result 12 states and 20 transitions. [2020-07-01 12:22:23,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-01 12:22:23,930 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-07-01 12:22:23,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-01 12:22:23,941 INFO L225 Difference]: With dead ends: 12 [2020-07-01 12:22:23,941 INFO L226 Difference]: Without dead ends: 11 [2020-07-01 12:22:23,944 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 12:22:23,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2020-07-01 12:22:23,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2020-07-01 12:22:23,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-07-01 12:22:23,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 18 transitions. [2020-07-01 12:22:23,980 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 18 transitions. Word has length 4 [2020-07-01 12:22:23,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-01 12:22:23,980 INFO L479 AbstractCegarLoop]: Abstraction has 11 states and 18 transitions. [2020-07-01 12:22:23,980 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-01 12:22:23,980 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 18 transitions. [2020-07-01 12:22:23,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-07-01 12:22:23,981 INFO L414 BasicCegarLoop]: Found error trace [2020-07-01 12:22:23,981 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-07-01 12:22:23,981 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-01 12:22:23,981 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4ASSERT_VIOLATIONILLEGAL_POINTER_ARITHMETIC, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-07-01 12:22:23,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:22:23,982 INFO L82 PathProgramCache]: Analyzing trace with hash 3653980, now seen corresponding path program 1 times [2020-07-01 12:22:23,982 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 12:22:23,983 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276273245] [2020-07-01 12:22:23,983 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 12:22:23,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 12:22:24,014 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 12:22:24,015 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276273245] [2020-07-01 12:22:24,015 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-01 12:22:24,015 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-01 12:22:24,016 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140411478] [2020-07-01 12:22:24,017 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-01 12:22:24,018 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-01 12:22:24,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-01 12:22:24,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-01 12:22:24,018 INFO L87 Difference]: Start difference. First operand 11 states and 18 transitions. Second operand 3 states. [2020-07-01 12:22:24,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-01 12:22:24,059 INFO L93 Difference]: Finished difference Result 12 states and 18 transitions. [2020-07-01 12:22:24,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-01 12:22:24,060 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-07-01 12:22:24,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-01 12:22:24,061 INFO L225 Difference]: With dead ends: 12 [2020-07-01 12:22:24,061 INFO L226 Difference]: Without dead ends: 11 [2020-07-01 12:22:24,062 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 12:22:24,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2020-07-01 12:22:24,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2020-07-01 12:22:24,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-07-01 12:22:24,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 17 transitions. [2020-07-01 12:22:24,065 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 17 transitions. Word has length 4 [2020-07-01 12:22:24,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-01 12:22:24,066 INFO L479 AbstractCegarLoop]: Abstraction has 11 states and 17 transitions. [2020-07-01 12:22:24,066 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-01 12:22:24,066 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 17 transitions. [2020-07-01 12:22:24,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-07-01 12:22:24,066 INFO L414 BasicCegarLoop]: Found error trace [2020-07-01 12:22:24,066 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-07-01 12:22:24,067 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-01 12:22:24,067 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4ASSERT_VIOLATIONILLEGAL_POINTER_ARITHMETIC, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-07-01 12:22:24,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:22:24,067 INFO L82 PathProgramCache]: Analyzing trace with hash 3653981, now seen corresponding path program 1 times [2020-07-01 12:22:24,068 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 12:22:24,068 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465062406] [2020-07-01 12:22:24,068 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 12:22:24,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 12:22:24,099 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 12:22:24,099 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465062406] [2020-07-01 12:22:24,099 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-01 12:22:24,099 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-01 12:22:24,100 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724008219] [2020-07-01 12:22:24,100 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-01 12:22:24,100 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-01 12:22:24,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-01 12:22:24,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-07-01 12:22:24,101 INFO L87 Difference]: Start difference. First operand 11 states and 17 transitions. Second operand 4 states. [2020-07-01 12:22:24,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-01 12:22:24,142 INFO L93 Difference]: Finished difference Result 11 states and 17 transitions. [2020-07-01 12:22:24,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-01 12:22:24,142 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2020-07-01 12:22:24,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-01 12:22:24,143 INFO L225 Difference]: With dead ends: 11 [2020-07-01 12:22:24,143 INFO L226 Difference]: Without dead ends: 10 [2020-07-01 12:22:24,143 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-07-01 12:22:24,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2020-07-01 12:22:24,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2020-07-01 12:22:24,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-07-01 12:22:24,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 16 transitions. [2020-07-01 12:22:24,147 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 16 transitions. Word has length 4 [2020-07-01 12:22:24,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-01 12:22:24,147 INFO L479 AbstractCegarLoop]: Abstraction has 10 states and 16 transitions. [2020-07-01 12:22:24,147 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-01 12:22:24,147 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 16 transitions. [2020-07-01 12:22:24,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-07-01 12:22:24,148 INFO L414 BasicCegarLoop]: Found error trace [2020-07-01 12:22:24,148 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-07-01 12:22:24,148 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-01 12:22:24,148 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4ASSERT_VIOLATIONILLEGAL_POINTER_ARITHMETIC, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-07-01 12:22:24,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:22:24,149 INFO L82 PathProgramCache]: Analyzing trace with hash 113274074, now seen corresponding path program 1 times [2020-07-01 12:22:24,149 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 12:22:24,149 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113346106] [2020-07-01 12:22:24,149 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 12:22:24,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 12:22:24,192 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 12:22:24,192 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113346106] [2020-07-01 12:22:24,192 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-01 12:22:24,193 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-01 12:22:24,193 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327240297] [2020-07-01 12:22:24,193 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-01 12:22:24,193 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-01 12:22:24,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-01 12:22:24,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-01 12:22:24,194 INFO L87 Difference]: Start difference. First operand 10 states and 16 transitions. Second operand 3 states. [2020-07-01 12:22:24,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-01 12:22:24,232 INFO L93 Difference]: Finished difference Result 10 states and 16 transitions. [2020-07-01 12:22:24,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-01 12:22:24,232 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-07-01 12:22:24,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-01 12:22:24,233 INFO L225 Difference]: With dead ends: 10 [2020-07-01 12:22:24,233 INFO L226 Difference]: Without dead ends: 9 [2020-07-01 12:22:24,234 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 12:22:24,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2020-07-01 12:22:24,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2020-07-01 12:22:24,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-07-01 12:22:24,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 14 transitions. [2020-07-01 12:22:24,237 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 14 transitions. Word has length 5 [2020-07-01 12:22:24,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-01 12:22:24,237 INFO L479 AbstractCegarLoop]: Abstraction has 9 states and 14 transitions. [2020-07-01 12:22:24,237 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-01 12:22:24,237 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 14 transitions. [2020-07-01 12:22:24,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-07-01 12:22:24,238 INFO L414 BasicCegarLoop]: Found error trace [2020-07-01 12:22:24,238 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-07-01 12:22:24,238 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-01 12:22:24,238 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4ASSERT_VIOLATIONILLEGAL_POINTER_ARITHMETIC, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-07-01 12:22:24,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:22:24,239 INFO L82 PathProgramCache]: Analyzing trace with hash 113274076, now seen corresponding path program 1 times [2020-07-01 12:22:24,239 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 12:22:24,239 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717301985] [2020-07-01 12:22:24,239 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 12:22:24,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 12:22:24,295 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 12:22:24,295 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717301985] [2020-07-01 12:22:24,296 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-01 12:22:24,296 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-01 12:22:24,296 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655356940] [2020-07-01 12:22:24,296 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-01 12:22:24,297 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-01 12:22:24,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-01 12:22:24,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-01 12:22:24,297 INFO L87 Difference]: Start difference. First operand 9 states and 14 transitions. Second operand 5 states. [2020-07-01 12:22:24,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-01 12:22:24,362 INFO L93 Difference]: Finished difference Result 14 states and 22 transitions. [2020-07-01 12:22:24,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-01 12:22:24,378 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 5 [2020-07-01 12:22:24,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-01 12:22:24,380 INFO L225 Difference]: With dead ends: 14 [2020-07-01 12:22:24,380 INFO L226 Difference]: Without dead ends: 13 [2020-07-01 12:22:24,381 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-07-01 12:22:24,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2020-07-01 12:22:24,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 10. [2020-07-01 12:22:24,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-07-01 12:22:24,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 15 transitions. [2020-07-01 12:22:24,386 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 15 transitions. Word has length 5 [2020-07-01 12:22:24,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-01 12:22:24,386 INFO L479 AbstractCegarLoop]: Abstraction has 10 states and 15 transitions. [2020-07-01 12:22:24,386 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-01 12:22:24,386 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 15 transitions. [2020-07-01 12:22:24,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-07-01 12:22:24,387 INFO L414 BasicCegarLoop]: Found error trace [2020-07-01 12:22:24,387 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-07-01 12:22:24,387 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-07-01 12:22:24,387 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4ASSERT_VIOLATIONILLEGAL_POINTER_ARITHMETIC, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-07-01 12:22:24,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:22:24,388 INFO L82 PathProgramCache]: Analyzing trace with hash 1482188220, now seen corresponding path program 1 times [2020-07-01 12:22:24,388 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 12:22:24,388 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396882220] [2020-07-01 12:22:24,388 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 12:22:24,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 12:22:24,490 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-01 12:22:24,490 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396882220] [2020-07-01 12:22:24,490 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-01 12:22:24,491 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-01 12:22:24,491 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870000191] [2020-07-01 12:22:24,491 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-01 12:22:24,491 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-01 12:22:24,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-01 12:22:24,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-07-01 12:22:24,492 INFO L87 Difference]: Start difference. First operand 10 states and 15 transitions. Second operand 6 states. [2020-07-01 12:22:24,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-01 12:22:24,593 INFO L93 Difference]: Finished difference Result 21 states and 32 transitions. [2020-07-01 12:22:24,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-01 12:22:24,594 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 7 [2020-07-01 12:22:24,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-01 12:22:24,594 INFO L225 Difference]: With dead ends: 21 [2020-07-01 12:22:24,595 INFO L226 Difference]: Without dead ends: 16 [2020-07-01 12:22:24,595 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-07-01 12:22:24,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-07-01 12:22:24,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 14. [2020-07-01 12:22:24,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-07-01 12:22:24,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 20 transitions. [2020-07-01 12:22:24,600 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 20 transitions. Word has length 7 [2020-07-01 12:22:24,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-01 12:22:24,600 INFO L479 AbstractCegarLoop]: Abstraction has 14 states and 20 transitions. [2020-07-01 12:22:24,600 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-01 12:22:24,600 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 20 transitions. [2020-07-01 12:22:24,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-07-01 12:22:24,601 INFO L414 BasicCegarLoop]: Found error trace [2020-07-01 12:22:24,601 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-07-01 12:22:24,601 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-07-01 12:22:24,601 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4ASSERT_VIOLATIONILLEGAL_POINTER_ARITHMETIC, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-07-01 12:22:24,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:22:24,602 INFO L82 PathProgramCache]: Analyzing trace with hash 1482186796, now seen corresponding path program 1 times [2020-07-01 12:22:24,602 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 12:22:24,602 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755686219] [2020-07-01 12:22:24,602 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 12:22:24,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 12:22:24,646 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 12:22:24,647 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755686219] [2020-07-01 12:22:24,647 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-01 12:22:24,647 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-01 12:22:24,647 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751354161] [2020-07-01 12:22:24,648 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-01 12:22:24,648 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-01 12:22:24,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-01 12:22:24,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-01 12:22:24,649 INFO L87 Difference]: Start difference. First operand 14 states and 20 transitions. Second operand 3 states. [2020-07-01 12:22:24,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-01 12:22:24,668 INFO L93 Difference]: Finished difference Result 14 states and 20 transitions. [2020-07-01 12:22:24,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-01 12:22:24,670 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2020-07-01 12:22:24,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-01 12:22:24,671 INFO L225 Difference]: With dead ends: 14 [2020-07-01 12:22:24,671 INFO L226 Difference]: Without dead ends: 8 [2020-07-01 12:22:24,671 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 12:22:24,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2020-07-01 12:22:24,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2020-07-01 12:22:24,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-07-01 12:22:24,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 11 transitions. [2020-07-01 12:22:24,674 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 11 transitions. Word has length 7 [2020-07-01 12:22:24,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-01 12:22:24,674 INFO L479 AbstractCegarLoop]: Abstraction has 8 states and 11 transitions. [2020-07-01 12:22:24,674 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-01 12:22:24,675 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 11 transitions. [2020-07-01 12:22:24,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-07-01 12:22:24,675 INFO L414 BasicCegarLoop]: Found error trace [2020-07-01 12:22:24,675 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-07-01 12:22:24,675 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-07-01 12:22:24,675 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4ASSERT_VIOLATIONILLEGAL_POINTER_ARITHMETIC, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-07-01 12:22:24,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:22:24,676 INFO L82 PathProgramCache]: Analyzing trace with hash 1768479730, now seen corresponding path program 1 times [2020-07-01 12:22:24,676 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 12:22:24,676 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484497927] [2020-07-01 12:22:24,676 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 12:22:24,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:22:24,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:22:24,728 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 12:22:24,729 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-01 12:22:24,729 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-07-01 12:22:24,752 INFO L308 ceAbstractionStarter]: Did not count any witness invariants because Icfg is not BoogieIcfg [2020-07-01 12:22:24,755 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 12:22:24 BasicIcfg [2020-07-01 12:22:24,755 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-01 12:22:24,756 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-07-01 12:22:24,756 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-07-01 12:22:24,759 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-07-01 12:22:24,760 INFO L96 BuchiAutomizer]: Another Plugin discovered errors, I will not analyze termination [2020-07-01 12:22:24,760 INFO L96 BuchiAutomizer]: Another Plugin discovered errors, I will not analyze termination [2020-07-01 12:22:24,760 INFO L96 BuchiAutomizer]: Another Plugin discovered errors, I will not analyze termination [2020-07-01 12:22:24,760 INFO L96 BuchiAutomizer]: Another Plugin discovered errors, I will not analyze termination [2020-07-01 12:22:24,760 INFO L96 BuchiAutomizer]: Another Plugin discovered errors, I will not analyze termination [2020-07-01 12:22:24,760 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-07-01 12:22:24,763 INFO L168 Benchmark]: Toolchain (without parser) took 1982.87 ms. Allocated memory was 514.9 MB in the beginning and 591.9 MB in the end (delta: 77.1 MB). Free memory was 439.0 MB in the beginning and 539.3 MB in the end (delta: -100.3 MB). There was no memory consumed. Max. memory is 50.3 GB. [2020-07-01 12:22:24,763 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 514.9 MB. Free memory is still 458.4 MB. There was no memory consumed. Max. memory is 50.3 GB. [2020-07-01 12:22:24,764 INFO L168 Benchmark]: CACSL2BoogieTranslator took 314.36 ms. Allocated memory was 514.9 MB in the beginning and 564.1 MB in the end (delta: 49.3 MB). Free memory was 438.3 MB in the beginning and 530.8 MB in the end (delta: -92.5 MB). Peak memory consumption was 28.2 MB. Max. memory is 50.3 GB. [2020-07-01 12:22:24,765 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.15 ms. Allocated memory is still 564.1 MB. Free memory was 530.8 MB in the beginning and 528.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 50.3 GB. [2020-07-01 12:22:24,765 INFO L168 Benchmark]: Boogie Preprocessor took 27.71 ms. Allocated memory is still 564.1 MB. Free memory was 528.7 MB in the beginning and 526.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 50.3 GB. [2020-07-01 12:22:24,766 INFO L168 Benchmark]: RCFGBuilder took 288.40 ms. Allocated memory is still 564.1 MB. Free memory was 526.7 MB in the beginning and 510.1 MB in the end (delta: 16.6 MB). Peak memory consumption was 16.6 MB. Max. memory is 50.3 GB. [2020-07-01 12:22:24,766 INFO L168 Benchmark]: BlockEncodingV2 took 111.97 ms. Allocated memory is still 564.1 MB. Free memory was 510.1 MB in the beginning and 502.0 MB in the end (delta: 8.1 MB). Peak memory consumption was 8.1 MB. Max. memory is 50.3 GB. [2020-07-01 12:22:24,767 INFO L168 Benchmark]: TraceAbstraction took 1188.87 ms. Allocated memory was 564.1 MB in the beginning and 591.9 MB in the end (delta: 27.8 MB). Free memory was 501.3 MB in the beginning and 539.3 MB in the end (delta: -38.0 MB). There was no memory consumed. Max. memory is 50.3 GB. [2020-07-01 12:22:24,767 INFO L168 Benchmark]: BuchiAutomizer took 4.34 ms. Allocated memory is still 591.9 MB. Free memory is still 539.3 MB. There was no memory consumed. Max. memory is 50.3 GB. [2020-07-01 12:22:24,771 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 19 locations, 21 edges - StatisticsResult: Encoded RCFG 12 locations, 20 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 514.9 MB. Free memory is still 458.4 MB. There was no memory consumed. Max. memory is 50.3 GB. * CACSL2BoogieTranslator took 314.36 ms. Allocated memory was 514.9 MB in the beginning and 564.1 MB in the end (delta: 49.3 MB). Free memory was 438.3 MB in the beginning and 530.8 MB in the end (delta: -92.5 MB). Peak memory consumption was 28.2 MB. Max. memory is 50.3 GB. * Boogie Procedure Inliner took 41.15 ms. Allocated memory is still 564.1 MB. Free memory was 530.8 MB in the beginning and 528.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 50.3 GB. * Boogie Preprocessor took 27.71 ms. Allocated memory is still 564.1 MB. Free memory was 528.7 MB in the beginning and 526.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 50.3 GB. * RCFGBuilder took 288.40 ms. Allocated memory is still 564.1 MB. Free memory was 526.7 MB in the beginning and 510.1 MB in the end (delta: 16.6 MB). Peak memory consumption was 16.6 MB. Max. memory is 50.3 GB. * BlockEncodingV2 took 111.97 ms. Allocated memory is still 564.1 MB. Free memory was 510.1 MB in the beginning and 502.0 MB in the end (delta: 8.1 MB). Peak memory consumption was 8.1 MB. Max. memory is 50.3 GB. * TraceAbstraction took 1188.87 ms. Allocated memory was 564.1 MB in the beginning and 591.9 MB in the end (delta: 27.8 MB). Free memory was 501.3 MB in the beginning and 539.3 MB in the end (delta: -38.0 MB). There was no memory consumed. Max. memory is 50.3 GB. * BuchiAutomizer took 4.34 ms. Allocated memory is still 591.9 MB. Free memory is still 539.3 MB. There was no memory consumed. Max. memory is 50.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 28]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L11] int length = __VERIFIER_nondet_int(); [L12] COND FALSE !(length < 1) [L15] char* nondetString = (char*) malloc(length * sizeof(char)); [L16] nondetString[length-1] = '\0' [L17] return nondetString; [L26] const char *p = s; [L28] EXPR \read(*p) [L28] COND TRUE *p != '\0' [L29] p = p+2 [L28] \read(*p) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 5 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.1s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 23 SDtfs, 102 SDslu, 30 SDs, 0 SdLazy, 145 SolverSat, 23 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred in iteration=6, 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, 7 MinimizatonAttempts, 5 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 43 NumberOfCodeBlocks, 43 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 29 ConstructedInterpolants, 0 QuantifiedInterpolants, 457 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 1/1 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 12:22:19.554 ----------------------------------------------- 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/sandbox2/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/sandbox2/tmp/BenchExec_run__N0cCr/tmp -i /export/starexec/sandbox2/benchmark/theBenchmark.c !ENTRY org.eclipse.core.resources 2 10035 2020-07-01 12:22:25.002 !MESSAGE The workspace will exit with unsaved changes in this session. Received shutdown request... Ultimate: GTK+ Version Check