java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --traceabstraction.dump.automata.to.the.following.directory dump --rcfgbuilder.size.of.a.code.block SingleStatement --cacsl2boogietranslator.bitprecise.bitfields false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-memsafety/openbsd_cbzero-alloca_true-valid-memsafety_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-c5b1954-m [2018-10-10 14:41:53,649 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-10 14:41:53,651 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-10 14:41:53,663 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-10 14:41:53,663 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-10 14:41:53,664 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-10 14:41:53,665 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-10 14:41:53,667 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-10 14:41:53,669 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-10 14:41:53,670 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-10 14:41:53,671 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-10 14:41:53,671 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-10 14:41:53,672 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-10 14:41:53,673 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-10 14:41:53,675 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-10 14:41:53,675 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-10 14:41:53,676 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-10 14:41:53,678 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-10 14:41:53,681 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-10 14:41:53,682 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-10 14:41:53,684 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-10 14:41:53,685 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-10 14:41:53,688 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-10 14:41:53,699 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2018-10-10 14:41:53,717 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-10 14:41:53,718 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-10 14:41:53,719 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-10 14:41:53,719 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-10 14:41:53,720 INFO L133 SettingsManager]: * Use SBE=true [2018-10-10 14:41:53,720 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-10 14:41:53,720 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-10 14:41:53,720 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-10-10 14:41:53,721 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-10 14:41:53,721 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-10 14:41:53,721 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-10 14:41:53,721 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-10-10 14:41:53,722 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-10-10 14:41:53,722 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-10-10 14:41:53,722 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-10 14:41:53,722 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-10 14:41:53,723 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-10 14:41:53,723 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-10 14:41:53,723 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-10 14:41:53,723 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-10 14:41:53,723 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-10 14:41:53,724 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-10 14:41:53,724 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-10 14:41:53,724 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-10 14:41:53,724 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-10 14:41:53,724 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Dump automata to the following directory -> dump Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Bitprecise bitfields -> false [2018-10-10 14:41:53,769 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-10 14:41:53,789 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-10 14:41:53,795 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-10 14:41:53,796 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-10 14:41:53,797 INFO L276 PluginConnector]: CDTParser initialized [2018-10-10 14:41:53,797 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-memsafety/openbsd_cbzero-alloca_true-valid-memsafety_true-termination.i [2018-10-10 14:41:54,095 INFO L217 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b739d51c/cf19f1745258442a9be3a8c76de18005/FLAG1bb5e8889 [2018-10-10 14:41:54,343 INFO L289 CDTParser]: Found 1 translation units. [2018-10-10 14:41:54,344 INFO L157 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-memsafety/openbsd_cbzero-alloca_true-valid-memsafety_true-termination.i [2018-10-10 14:41:54,370 INFO L337 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b739d51c/cf19f1745258442a9be3a8c76de18005/FLAG1bb5e8889 [2018-10-10 14:41:54,386 INFO L345 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b739d51c/cf19f1745258442a9be3a8c76de18005 [2018-10-10 14:41:54,395 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-10 14:41:54,396 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-10 14:41:54,397 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-10 14:41:54,398 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-10 14:41:54,401 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-10 14:41:54,402 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.10 02:41:54" (1/1) ... [2018-10-10 14:41:54,405 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@333d2360 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 02:41:54, skipping insertion in model container [2018-10-10 14:41:54,406 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.10 02:41:54" (1/1) ... [2018-10-10 14:41:54,416 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-10 14:41:54,478 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-10 14:41:54,758 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-10 14:41:54,768 INFO L189 MainTranslator]: Completed pre-run [2018-10-10 14:41:54,826 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-10 14:41:54,890 INFO L193 MainTranslator]: Completed translation [2018-10-10 14:41:54,891 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 02:41:54 WrapperNode [2018-10-10 14:41:54,891 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-10 14:41:54,892 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-10 14:41:54,892 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-10 14:41:54,892 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-10 14:41:54,903 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 02:41:54" (1/1) ... [2018-10-10 14:41:54,921 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 02:41:54" (1/1) ... [2018-10-10 14:41:54,945 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-10 14:41:54,946 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-10 14:41:54,946 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-10 14:41:54,946 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-10 14:41:54,957 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 02:41:54" (1/1) ... [2018-10-10 14:41:54,958 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 02:41:54" (1/1) ... [2018-10-10 14:41:54,962 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 02:41:54" (1/1) ... [2018-10-10 14:41:54,962 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 02:41:54" (1/1) ... [2018-10-10 14:41:54,972 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 02:41:54" (1/1) ... [2018-10-10 14:41:54,977 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 02:41:54" (1/1) ... [2018-10-10 14:41:54,979 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 02:41:54" (1/1) ... [2018-10-10 14:41:54,981 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-10 14:41:54,982 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-10 14:41:54,982 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-10 14:41:54,982 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-10 14:41:54,983 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 02:41:54" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-10 14:41:55,121 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-10 14:41:55,122 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-10 14:41:55,574 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-10 14:41:55,575 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 02:41:55 BoogieIcfgContainer [2018-10-10 14:41:55,575 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-10 14:41:55,577 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-10 14:41:55,577 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-10 14:41:55,580 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-10 14:41:55,580 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.10 02:41:54" (1/3) ... [2018-10-10 14:41:55,581 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19b54255 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.10 02:41:55, skipping insertion in model container [2018-10-10 14:41:55,581 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 02:41:54" (2/3) ... [2018-10-10 14:41:55,582 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19b54255 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.10 02:41:55, skipping insertion in model container [2018-10-10 14:41:55,582 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 02:41:55" (3/3) ... [2018-10-10 14:41:55,584 INFO L112 eAbstractionObserver]: Analyzing ICFG openbsd_cbzero-alloca_true-valid-memsafety_true-termination.i [2018-10-10 14:41:55,594 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-10 14:41:55,603 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2018-10-10 14:41:55,621 INFO L257 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2018-10-10 14:41:55,649 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-10 14:41:55,650 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-10 14:41:55,650 INFO L383 AbstractCegarLoop]: Hoare is false [2018-10-10 14:41:55,651 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-10 14:41:55,651 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-10 14:41:55,651 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-10 14:41:55,651 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-10 14:41:55,651 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-10 14:41:55,651 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-10 14:41:55,670 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states. [2018-10-10 14:41:55,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-10-10 14:41:55,679 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 14:41:55,680 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 14:41:55,682 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2018-10-10 14:41:55,688 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 14:41:55,688 INFO L82 PathProgramCache]: Analyzing trace with hash 1888490672, now seen corresponding path program 1 times [2018-10-10 14:41:55,691 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-10 14:41:55,691 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-10 14:41:55,736 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-10 14:41:55,737 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-10 14:41:55,737 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-10 14:41:55,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 14:41:55,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 14:41:55,846 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-10 14:41:55,846 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-10 14:41:55,849 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-10 14:41:55,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-10 14:41:55,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-10 14:41:55,866 INFO L87 Difference]: Start difference. First operand 77 states. Second operand 3 states. [2018-10-10 14:41:56,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 14:41:56,025 INFO L93 Difference]: Finished difference Result 78 states and 81 transitions. [2018-10-10 14:41:56,025 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-10 14:41:56,027 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2018-10-10 14:41:56,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 14:41:56,047 INFO L225 Difference]: With dead ends: 78 [2018-10-10 14:41:56,048 INFO L226 Difference]: Without dead ends: 71 [2018-10-10 14:41:56,051 INFO L605 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 [2018-10-10 14:41:56,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2018-10-10 14:41:56,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2018-10-10 14:41:56,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2018-10-10 14:41:56,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 73 transitions. [2018-10-10 14:41:56,101 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 73 transitions. Word has length 19 [2018-10-10 14:41:56,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 14:41:56,102 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 73 transitions. [2018-10-10 14:41:56,102 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-10 14:41:56,102 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 73 transitions. [2018-10-10 14:41:56,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-10-10 14:41:56,105 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 14:41:56,106 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 14:41:56,107 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2018-10-10 14:41:56,108 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 14:41:56,109 INFO L82 PathProgramCache]: Analyzing trace with hash 770277027, now seen corresponding path program 1 times [2018-10-10 14:41:56,109 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-10 14:41:56,109 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-10 14:41:56,110 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-10 14:41:56,110 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-10 14:41:56,110 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-10 14:41:56,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 14:41:56,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 14:41:56,520 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-10 14:41:56,520 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-10-10 14:41:56,522 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-10 14:41:56,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-10 14:41:56,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2018-10-10 14:41:56,523 INFO L87 Difference]: Start difference. First operand 71 states and 73 transitions. Second operand 10 states. [2018-10-10 14:41:57,276 WARN L178 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2018-10-10 14:41:57,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 14:41:57,528 INFO L93 Difference]: Finished difference Result 87 states and 90 transitions. [2018-10-10 14:41:57,528 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-10 14:41:57,528 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 48 [2018-10-10 14:41:57,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 14:41:57,532 INFO L225 Difference]: With dead ends: 87 [2018-10-10 14:41:57,532 INFO L226 Difference]: Without dead ends: 87 [2018-10-10 14:41:57,534 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=102, Invalid=204, Unknown=0, NotChecked=0, Total=306 [2018-10-10 14:41:57,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2018-10-10 14:41:57,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 70. [2018-10-10 14:41:57,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2018-10-10 14:41:57,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 72 transitions. [2018-10-10 14:41:57,549 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 72 transitions. Word has length 48 [2018-10-10 14:41:57,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 14:41:57,549 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 72 transitions. [2018-10-10 14:41:57,550 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-10 14:41:57,550 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 72 transitions. [2018-10-10 14:41:57,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2018-10-10 14:41:57,553 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 14:41:57,553 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 14:41:57,553 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2018-10-10 14:41:57,554 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 14:41:57,554 INFO L82 PathProgramCache]: Analyzing trace with hash -1891215833, now seen corresponding path program 1 times [2018-10-10 14:41:57,554 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-10 14:41:57,554 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-10 14:41:57,556 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-10 14:41:57,556 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-10 14:41:57,556 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-10 14:41:57,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 14:41:57,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 14:41:57,888 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-10 14:41:57,888 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2018-10-10 14:41:57,888 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-10-10 14:41:57,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-10-10 14:41:57,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2018-10-10 14:41:57,889 INFO L87 Difference]: Start difference. First operand 70 states and 72 transitions. Second operand 13 states. [2018-10-10 14:41:59,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 14:41:59,136 INFO L93 Difference]: Finished difference Result 122 states and 124 transitions. [2018-10-10 14:41:59,137 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-10 14:41:59,137 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 49 [2018-10-10 14:41:59,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 14:41:59,139 INFO L225 Difference]: With dead ends: 122 [2018-10-10 14:41:59,139 INFO L226 Difference]: Without dead ends: 122 [2018-10-10 14:41:59,140 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=240, Invalid=516, Unknown=0, NotChecked=0, Total=756 [2018-10-10 14:41:59,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2018-10-10 14:41:59,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 82. [2018-10-10 14:41:59,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2018-10-10 14:41:59,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 85 transitions. [2018-10-10 14:41:59,149 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 85 transitions. Word has length 49 [2018-10-10 14:41:59,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 14:41:59,150 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 85 transitions. [2018-10-10 14:41:59,150 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-10-10 14:41:59,150 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 85 transitions. [2018-10-10 14:41:59,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-10-10 14:41:59,152 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 14:41:59,152 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 14:41:59,152 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2018-10-10 14:41:59,153 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 14:41:59,153 INFO L82 PathProgramCache]: Analyzing trace with hash 455626534, now seen corresponding path program 1 times [2018-10-10 14:41:59,153 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-10 14:41:59,153 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-10 14:41:59,154 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-10 14:41:59,154 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-10 14:41:59,155 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-10 14:41:59,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 14:41:59,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 14:41:59,374 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-10 14:41:59,374 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-10-10 14:41:59,375 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-10 14:41:59,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-10 14:41:59,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2018-10-10 14:41:59,376 INFO L87 Difference]: Start difference. First operand 82 states and 85 transitions. Second operand 9 states. [2018-10-10 14:41:59,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 14:41:59,708 INFO L93 Difference]: Finished difference Result 81 states and 84 transitions. [2018-10-10 14:41:59,708 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-10 14:41:59,708 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 52 [2018-10-10 14:41:59,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 14:41:59,710 INFO L225 Difference]: With dead ends: 81 [2018-10-10 14:41:59,710 INFO L226 Difference]: Without dead ends: 70 [2018-10-10 14:41:59,710 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=84, Invalid=188, Unknown=0, NotChecked=0, Total=272 [2018-10-10 14:41:59,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2018-10-10 14:41:59,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2018-10-10 14:41:59,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2018-10-10 14:41:59,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 72 transitions. [2018-10-10 14:41:59,716 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 72 transitions. Word has length 52 [2018-10-10 14:41:59,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 14:41:59,717 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 72 transitions. [2018-10-10 14:41:59,717 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-10 14:41:59,717 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 72 transitions. [2018-10-10 14:41:59,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2018-10-10 14:41:59,718 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 14:41:59,719 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 14:41:59,719 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2018-10-10 14:41:59,719 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 14:41:59,719 INFO L82 PathProgramCache]: Analyzing trace with hash 1798882742, now seen corresponding path program 1 times [2018-10-10 14:41:59,720 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-10 14:41:59,720 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-10 14:41:59,721 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-10 14:41:59,721 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-10 14:41:59,721 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-10 14:41:59,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 14:42:00,378 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 14:42:00,378 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-10 14:42:00,378 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-10 14:42:00,388 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-10 14:42:00,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 14:42:00,431 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-10 14:42:00,493 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-10-10 14:42:00,495 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-10-10 14:42:00,620 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-10 14:42:00,621 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:16, output treesize:12 [2018-10-10 14:42:01,388 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 14:42:01,412 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-10 14:42:01,412 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20] total 26 [2018-10-10 14:42:01,453 WARN L240 PathProgramDumper]: Writing path program to file /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/dump/openbsd_cbzero-alloca_true-valid-memsafety_true-termination.i_5.bpl [2018-10-10 14:42:01,458 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-10-10 14:42:01,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-10-10 14:42:01,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=639, Unknown=0, NotChecked=0, Total=702 [2018-10-10 14:42:01,461 INFO L87 Difference]: Start difference. First operand 70 states and 72 transitions. Second operand 27 states. [2018-10-10 14:42:03,136 WARN L178 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 50 [2018-10-10 14:42:03,896 WARN L178 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 45 [2018-10-10 14:42:04,640 WARN L178 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2018-10-10 14:42:04,879 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 53 [2018-10-10 14:42:04,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 14:42:04,979 INFO L93 Difference]: Finished difference Result 104 states and 106 transitions. [2018-10-10 14:42:04,986 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-10-10 14:42:04,986 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 67 [2018-10-10 14:42:04,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 14:42:04,987 INFO L225 Difference]: With dead ends: 104 [2018-10-10 14:42:04,988 INFO L226 Difference]: Without dead ends: 104 [2018-10-10 14:42:04,989 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 60 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=483, Invalid=1967, Unknown=0, NotChecked=0, Total=2450 [2018-10-10 14:42:04,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2018-10-10 14:42:05,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 88. [2018-10-10 14:42:05,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2018-10-10 14:42:05,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 90 transitions. [2018-10-10 14:42:05,002 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 90 transitions. Word has length 67 [2018-10-10 14:42:05,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 14:42:05,006 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 90 transitions. [2018-10-10 14:42:05,006 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-10-10 14:42:05,006 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 90 transitions. [2018-10-10 14:42:05,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2018-10-10 14:42:05,008 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 14:42:05,008 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 14:42:05,008 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2018-10-10 14:42:05,008 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 14:42:05,010 INFO L82 PathProgramCache]: Analyzing trace with hash -1321595003, now seen corresponding path program 2 times [2018-10-10 14:42:05,010 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-10 14:42:05,010 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-10 14:42:05,011 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-10 14:42:05,011 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-10 14:42:05,011 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-10 14:42:05,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 14:42:05,784 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 14:42:05,784 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-10 14:42:05,785 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-10 14:42:05,797 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-10 14:42:05,844 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-10 14:42:05,845 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-10 14:42:05,851 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-10 14:42:05,870 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-10-10 14:42:05,871 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-10-10 14:42:05,886 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-10 14:42:05,887 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:16, output treesize:12 [2018-10-10 14:42:08,544 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 14:42:08,564 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-10 14:42:08,564 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 25] total 36 [2018-10-10 14:42:08,565 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-10 14:42:08,569 WARN L205 ceAbstractionStarter]: Timeout [2018-10-10 14:42:08,569 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.10 02:42:08 BoogieIcfgContainer [2018-10-10 14:42:08,569 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-10 14:42:08,570 INFO L168 Benchmark]: Toolchain (without parser) took 14174.09 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 867.2 MB). Free memory was 1.4 GB in the beginning and 2.0 GB in the end (delta: -610.5 MB). Peak memory consumption was 256.6 MB. Max. memory is 7.1 GB. [2018-10-10 14:42:08,571 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-10 14:42:08,571 INFO L168 Benchmark]: CACSL2BoogieTranslator took 493.92 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-10-10 14:42:08,572 INFO L168 Benchmark]: Boogie Procedure Inliner took 53.50 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-10 14:42:08,573 INFO L168 Benchmark]: Boogie Preprocessor took 35.51 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-10 14:42:08,573 INFO L168 Benchmark]: RCFGBuilder took 594.00 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 724.6 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -763.1 MB). Peak memory consumption was 16.3 MB. Max. memory is 7.1 GB. [2018-10-10 14:42:08,574 INFO L168 Benchmark]: TraceAbstraction took 12992.57 ms. Allocated memory was 2.2 GB in the beginning and 2.4 GB in the end (delta: 142.6 MB). Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 131.4 MB). Peak memory consumption was 274.0 MB. Max. memory is 7.1 GB. [2018-10-10 14:42:08,579 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 493.92 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 53.50 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 35.51 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 594.00 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 724.6 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -763.1 MB). Peak memory consumption was 16.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 12992.57 ms. Allocated memory was 2.2 GB in the beginning and 2.4 GB in the end (delta: 142.6 MB). Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 131.4 MB). Peak memory consumption was 274.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds (line -1). Cancelled while PathProgramDumpController was trying to verify (iteration 6). - TimeoutResultAtElement [Line: 547]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed (line 547). Cancelled while PathProgramDumpController was trying to verify (iteration 6). - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds (line -1). Cancelled while PathProgramDumpController was trying to verify (iteration 6). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 77 locations, 3 error locations. TIMEOUT Result, 12.9s OverallTime, 6 OverallIterations, 3 TraceHistogramMax, 6.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 337 SDtfs, 1868 SDslu, 1630 SDs, 0 SdLazy, 934 SolverSat, 59 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 173 GetRequests, 65 SyntacticMatches, 2 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 402 ImplicationChecksByTransitivity, 5.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=88occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 73 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.4s InterpolantComputationTime, 302 NumberOfCodeBlocks, 302 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 296 ConstructedInterpolants, 8 QuantifiedInterpolants, 119365 SizeOfPredicates, 27 NumberOfNonLiveVariables, 133 ConjunctsInSsa, 55 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 0/24 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Received shutdown request...