java -Xmx6000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data ./data --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/cade18-smtinterpol/svcomp-DerefFreeMemtrack-32bit-Automizer_SmtInterpol_NoArray.epf -i ../../../trunk/examples/svcomp/ldv-memsafety/memleaks_test4_false-valid-memtrack_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-a74eeac-m [2018-02-02 21:08:20,684 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-02-02 21:08:20,685 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-02-02 21:08:20,698 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-02-02 21:08:20,698 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-02-02 21:08:20,699 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-02-02 21:08:20,700 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-02-02 21:08:20,701 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-02-02 21:08:20,703 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-02-02 21:08:20,704 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-02-02 21:08:20,704 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-02-02 21:08:20,705 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-02-02 21:08:20,705 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-02-02 21:08:20,706 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-02-02 21:08:20,707 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-02-02 21:08:20,709 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-02-02 21:08:20,711 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-02-02 21:08:20,713 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-02-02 21:08:20,714 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-02-02 21:08:20,715 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-02-02 21:08:20,717 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-02-02 21:08:20,722 INFO L98 SettingsManager]: Beginning loading settings from /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/cade18-smtinterpol/svcomp-DerefFreeMemtrack-32bit-Automizer_SmtInterpol_NoArray.epf [2018-02-02 21:08:20,731 INFO L110 SettingsManager]: Loading preferences was successful [2018-02-02 21:08:20,731 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-02-02 21:08:20,731 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-02-02 21:08:20,732 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-02-02 21:08:20,732 INFO L133 SettingsManager]: * Use SBE=true [2018-02-02 21:08:20,732 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-02-02 21:08:20,732 INFO L133 SettingsManager]: * sizeof long=4 [2018-02-02 21:08:20,732 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-02-02 21:08:20,732 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-02-02 21:08:20,732 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-02-02 21:08:20,732 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-02-02 21:08:20,732 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-02-02 21:08:20,733 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-02-02 21:08:20,733 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-02-02 21:08:20,733 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-02-02 21:08:20,733 INFO L133 SettingsManager]: * sizeof long double=12 [2018-02-02 21:08:20,733 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-02-02 21:08:20,733 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-02-02 21:08:20,733 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-02-02 21:08:20,733 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-02-02 21:08:20,733 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-02-02 21:08:20,734 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-02-02 21:08:20,734 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-02-02 21:08:20,734 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-02-02 21:08:20,734 INFO L133 SettingsManager]: * Trace refinement strategy=SMTINTERPOL [2018-02-02 21:08:20,761 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-02-02 21:08:20,769 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-02-02 21:08:20,772 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-02-02 21:08:20,773 INFO L271 PluginConnector]: Initializing CDTParser... [2018-02-02 21:08:20,773 INFO L276 PluginConnector]: CDTParser initialized [2018-02-02 21:08:20,774 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-memsafety/memleaks_test4_false-valid-memtrack_true-termination.i [2018-02-02 21:08:20,901 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-02-02 21:08:20,902 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-02-02 21:08:20,902 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-02-02 21:08:20,902 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-02-02 21:08:20,906 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-02-02 21:08:20,907 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.02 09:08:20" (1/1) ... [2018-02-02 21:08:20,909 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5fc89e21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:08:20, skipping insertion in model container [2018-02-02 21:08:20,909 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.02 09:08:20" (1/1) ... [2018-02-02 21:08:20,919 INFO L153 Dispatcher]: Using SV-COMP mode [2018-02-02 21:08:20,952 INFO L153 Dispatcher]: Using SV-COMP mode [2018-02-02 21:08:21,038 INFO L450 PostProcessor]: Settings: Checked method=main [2018-02-02 21:08:21,050 INFO L450 PostProcessor]: Settings: Checked method=main [2018-02-02 21:08:21,054 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:08:21 WrapperNode [2018-02-02 21:08:21,054 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-02-02 21:08:21,055 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-02-02 21:08:21,055 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-02-02 21:08:21,055 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-02-02 21:08:21,063 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:08:21" (1/1) ... [2018-02-02 21:08:21,063 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:08:21" (1/1) ... [2018-02-02 21:08:21,073 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:08:21" (1/1) ... [2018-02-02 21:08:21,073 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:08:21" (1/1) ... [2018-02-02 21:08:21,075 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:08:21" (1/1) ... [2018-02-02 21:08:21,077 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:08:21" (1/1) ... [2018-02-02 21:08:21,077 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:08:21" (1/1) ... [2018-02-02 21:08:21,079 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-02-02 21:08:21,079 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-02-02 21:08:21,079 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-02-02 21:08:21,079 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-02-02 21:08:21,080 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:08:21" (1/1) ... No working directory specified, using /home/ultimate/work/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 [2018-02-02 21:08:21,115 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-02-02 21:08:21,115 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-02-02 21:08:21,116 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2018-02-02 21:08:21,116 INFO L136 BoogieDeclarations]: Found implementation of procedure entry_point [2018-02-02 21:08:21,116 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-02-02 21:08:21,116 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-02-02 21:08:21,116 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-02-02 21:08:21,116 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-02-02 21:08:21,116 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-02-02 21:08:21,116 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-02-02 21:08:21,117 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-02-02 21:08:21,117 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_malloc [2018-02-02 21:08:21,117 INFO L128 BoogieDeclarations]: Found specification of procedure entry_point [2018-02-02 21:08:21,117 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-02-02 21:08:21,117 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-02-02 21:08:21,117 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-02-02 21:08:21,223 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-02-02 21:08:21,223 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.02 09:08:21 BoogieIcfgContainer [2018-02-02 21:08:21,224 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-02-02 21:08:21,224 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-02-02 21:08:21,224 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-02-02 21:08:21,227 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-02-02 21:08:21,227 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.02 09:08:20" (1/3) ... [2018-02-02 21:08:21,228 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fbd8080 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.02 09:08:21, skipping insertion in model container [2018-02-02 21:08:21,228 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:08:21" (2/3) ... [2018-02-02 21:08:21,228 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fbd8080 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.02 09:08:21, skipping insertion in model container [2018-02-02 21:08:21,228 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.02 09:08:21" (3/3) ... [2018-02-02 21:08:21,230 INFO L107 eAbstractionObserver]: Analyzing ICFG memleaks_test4_false-valid-memtrack_true-termination.i [2018-02-02 21:08:21,237 INFO L128 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-02-02 21:08:21,243 INFO L140 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2018-02-02 21:08:21,278 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-02-02 21:08:21,278 INFO L323 AbstractCegarLoop]: Hoare is false [2018-02-02 21:08:21,278 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-02-02 21:08:21,278 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-02-02 21:08:21,278 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-02-02 21:08:21,278 INFO L327 AbstractCegarLoop]: Difference is false [2018-02-02 21:08:21,278 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-02-02 21:08:21,278 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-02-02 21:08:21,279 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-02-02 21:08:21,286 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2018-02-02 21:08:21,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-02-02 21:08:21,293 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 21:08:21,293 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 21:08:21,294 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr0EnsuresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation]=== [2018-02-02 21:08:21,297 INFO L82 PathProgramCache]: Analyzing trace with hash -1713265670, now seen corresponding path program 1 times [2018-02-02 21:08:21,298 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-02-02 21:08:21,298 INFO L67 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-02-02 21:08:21,339 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 21:08:21,339 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 21:08:21,339 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 21:08:21,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 21:08:21,380 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 21:08:21,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 21:08:21,433 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 21:08:21,434 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-02-02 21:08:21,435 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-02-02 21:08:21,443 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-02-02 21:08:21,444 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-02-02 21:08:21,445 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 3 states. [2018-02-02 21:08:21,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 21:08:21,521 INFO L93 Difference]: Finished difference Result 39 states and 45 transitions. [2018-02-02 21:08:21,522 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-02-02 21:08:21,523 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2018-02-02 21:08:21,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 21:08:21,596 INFO L225 Difference]: With dead ends: 39 [2018-02-02 21:08:21,597 INFO L226 Difference]: Without dead ends: 33 [2018-02-02 21:08:21,599 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-02-02 21:08:21,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-02-02 21:08:21,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 28. [2018-02-02 21:08:21,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-02-02 21:08:21,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2018-02-02 21:08:21,625 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 16 [2018-02-02 21:08:21,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 21:08:21,625 INFO L432 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2018-02-02 21:08:21,625 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-02-02 21:08:21,625 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2018-02-02 21:08:21,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-02-02 21:08:21,626 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 21:08:21,627 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 21:08:21,627 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr0EnsuresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation]=== [2018-02-02 21:08:21,627 INFO L82 PathProgramCache]: Analyzing trace with hash 295629500, now seen corresponding path program 1 times [2018-02-02 21:08:21,627 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-02-02 21:08:21,627 INFO L67 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-02-02 21:08:21,629 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 21:08:21,629 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 21:08:21,629 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 21:08:21,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 21:08:21,641 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 21:08:21,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 21:08:21,695 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 21:08:21,695 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-02-02 21:08:21,696 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-02-02 21:08:21,697 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-02-02 21:08:21,697 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-02-02 21:08:21,697 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand 6 states. [2018-02-02 21:08:21,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 21:08:21,741 INFO L93 Difference]: Finished difference Result 35 states and 39 transitions. [2018-02-02 21:08:21,742 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-02-02 21:08:21,742 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2018-02-02 21:08:21,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 21:08:21,743 INFO L225 Difference]: With dead ends: 35 [2018-02-02 21:08:21,743 INFO L226 Difference]: Without dead ends: 35 [2018-02-02 21:08:21,744 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-02-02 21:08:21,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-02-02 21:08:21,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 24. [2018-02-02 21:08:21,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-02-02 21:08:21,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2018-02-02 21:08:21,749 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 18 [2018-02-02 21:08:21,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 21:08:21,749 INFO L432 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2018-02-02 21:08:21,749 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-02-02 21:08:21,749 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2018-02-02 21:08:21,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-02-02 21:08:21,750 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 21:08:21,750 INFO L351 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 21:08:21,750 INFO L371 AbstractCegarLoop]: === Iteration 3 === [mainErr0EnsuresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation]=== [2018-02-02 21:08:21,751 INFO L82 PathProgramCache]: Analyzing trace with hash -1865005914, now seen corresponding path program 1 times [2018-02-02 21:08:21,751 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-02-02 21:08:21,751 INFO L67 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-02-02 21:08:21,752 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 21:08:21,752 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 21:08:21,752 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 21:08:21,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 21:08:21,765 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 21:08:21,797 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-02-02 21:08:21,798 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 21:08:21,798 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-02-02 21:08:21,798 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-02-02 21:08:21,798 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-02-02 21:08:21,798 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-02-02 21:08:21,799 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand 5 states. [2018-02-02 21:08:21,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 21:08:21,820 INFO L93 Difference]: Finished difference Result 29 states and 31 transitions. [2018-02-02 21:08:21,821 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-02-02 21:08:21,821 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2018-02-02 21:08:21,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 21:08:21,822 INFO L225 Difference]: With dead ends: 29 [2018-02-02 21:08:21,822 INFO L226 Difference]: Without dead ends: 29 [2018-02-02 21:08:21,822 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-02-02 21:08:21,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-02-02 21:08:21,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2018-02-02 21:08:21,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-02-02 21:08:21,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2018-02-02 21:08:21,826 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 20 [2018-02-02 21:08:21,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 21:08:21,826 INFO L432 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2018-02-02 21:08:21,826 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-02-02 21:08:21,826 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2018-02-02 21:08:21,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-02-02 21:08:21,826 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 21:08:21,826 INFO L351 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 21:08:21,828 INFO L371 AbstractCegarLoop]: === Iteration 4 === [mainErr0EnsuresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation]=== [2018-02-02 21:08:21,828 INFO L82 PathProgramCache]: Analyzing trace with hash -1865005913, now seen corresponding path program 1 times [2018-02-02 21:08:21,828 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-02-02 21:08:21,828 INFO L67 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-02-02 21:08:21,829 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 21:08:21,829 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 21:08:21,829 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 21:08:21,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 21:08:21,840 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 21:08:21,873 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-02-02 21:08:21,873 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 21:08:21,873 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-02-02 21:08:21,873 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-02-02 21:08:21,874 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-02-02 21:08:21,874 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-02-02 21:08:21,874 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand 5 states. [2018-02-02 21:08:21,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 21:08:21,883 INFO L93 Difference]: Finished difference Result 30 states and 32 transitions. [2018-02-02 21:08:21,883 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-02-02 21:08:21,884 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2018-02-02 21:08:21,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 21:08:21,884 INFO L225 Difference]: With dead ends: 30 [2018-02-02 21:08:21,884 INFO L226 Difference]: Without dead ends: 30 [2018-02-02 21:08:21,884 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-02-02 21:08:21,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2018-02-02 21:08:21,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2018-02-02 21:08:21,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-02-02 21:08:21,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2018-02-02 21:08:21,887 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 20 [2018-02-02 21:08:21,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 21:08:21,887 INFO L432 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2018-02-02 21:08:21,887 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-02-02 21:08:21,887 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2018-02-02 21:08:21,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-02-02 21:08:21,887 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 21:08:21,887 INFO L351 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 21:08:21,888 INFO L371 AbstractCegarLoop]: === Iteration 5 === [mainErr0EnsuresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation]=== [2018-02-02 21:08:21,888 INFO L82 PathProgramCache]: Analyzing trace with hash 245416420, now seen corresponding path program 1 times [2018-02-02 21:08:21,888 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-02-02 21:08:21,888 INFO L67 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-02-02 21:08:21,889 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 21:08:21,889 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 21:08:21,889 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 21:08:21,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 21:08:21,896 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 21:08:21,928 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-02-02 21:08:21,928 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-02 21:08:21,928 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_FP [2018-02-02 21:08:21,929 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 21:08:21,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 21:08:21,957 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 21:08:21,985 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-02-02 21:08:21,985 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-02-02 21:08:21,985 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 9 [2018-02-02 21:08:21,986 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-02-02 21:08:21,986 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-02-02 21:08:21,986 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2018-02-02 21:08:21,986 INFO L87 Difference]: Start difference. First operand 28 states and 30 transitions. Second operand 9 states. [2018-02-02 21:08:22,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 21:08:22,024 INFO L93 Difference]: Finished difference Result 29 states and 30 transitions. [2018-02-02 21:08:22,024 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-02-02 21:08:22,024 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 22 [2018-02-02 21:08:22,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 21:08:22,025 INFO L225 Difference]: With dead ends: 29 [2018-02-02 21:08:22,025 INFO L226 Difference]: Without dead ends: 27 [2018-02-02 21:08:22,025 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2018-02-02 21:08:22,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-02-02 21:08:22,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-02-02 21:08:22,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-02-02 21:08:22,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2018-02-02 21:08:22,028 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 22 [2018-02-02 21:08:22,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 21:08:22,028 INFO L432 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2018-02-02 21:08:22,028 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-02-02 21:08:22,029 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2018-02-02 21:08:22,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-02-02 21:08:22,029 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 21:08:22,029 INFO L351 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 21:08:22,029 INFO L371 AbstractCegarLoop]: === Iteration 6 === [mainErr0EnsuresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation]=== [2018-02-02 21:08:22,030 INFO L82 PathProgramCache]: Analyzing trace with hash 1092908839, now seen corresponding path program 1 times [2018-02-02 21:08:22,030 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-02-02 21:08:22,030 INFO L67 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-02-02 21:08:22,031 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 21:08:22,031 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 21:08:22,031 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 21:08:22,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 21:08:22,043 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 21:08:22,091 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-02-02 21:08:22,092 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 21:08:22,092 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-02-02 21:08:22,092 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-02-02 21:08:22,092 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-02-02 21:08:22,093 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-02-02 21:08:22,093 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand 6 states. [2018-02-02 21:08:22,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 21:08:22,124 INFO L93 Difference]: Finished difference Result 26 states and 27 transitions. [2018-02-02 21:08:22,124 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-02-02 21:08:22,124 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2018-02-02 21:08:22,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 21:08:22,124 INFO L225 Difference]: With dead ends: 26 [2018-02-02 21:08:22,124 INFO L226 Difference]: Without dead ends: 26 [2018-02-02 21:08:22,125 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-02-02 21:08:22,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-02-02 21:08:22,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2018-02-02 21:08:22,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-02-02 21:08:22,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2018-02-02 21:08:22,126 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 24 [2018-02-02 21:08:22,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 21:08:22,127 INFO L432 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2018-02-02 21:08:22,127 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-02-02 21:08:22,127 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2018-02-02 21:08:22,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-02-02 21:08:22,127 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 21:08:22,127 INFO L351 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 21:08:22,127 INFO L371 AbstractCegarLoop]: === Iteration 7 === [mainErr0EnsuresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation]=== [2018-02-02 21:08:22,127 INFO L82 PathProgramCache]: Analyzing trace with hash -191782558, now seen corresponding path program 1 times [2018-02-02 21:08:22,128 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-02-02 21:08:22,128 INFO L67 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-02-02 21:08:22,128 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 21:08:22,129 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 21:08:22,129 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 21:08:22,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-02-02 21:08:22,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-02-02 21:08:22,157 INFO L410 BasicCegarLoop]: Counterexample might be feasible [2018-02-02 21:08:22,166 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-02-02 21:08:22,173 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.02 09:08:22 BoogieIcfgContainer [2018-02-02 21:08:22,174 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-02-02 21:08:22,174 INFO L168 Benchmark]: Toolchain (without parser) took 1272.81 ms. Allocated memory was 406.3 MB in the beginning and 615.5 MB in the end (delta: 209.2 MB). Free memory was 363.0 MB in the beginning and 511.7 MB in the end (delta: -148.7 MB). Peak memory consumption was 60.5 MB. Max. memory is 5.3 GB. [2018-02-02 21:08:22,175 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 406.3 MB. Free memory is still 369.6 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-02-02 21:08:22,176 INFO L168 Benchmark]: CACSL2BoogieTranslator took 152.11 ms. Allocated memory is still 406.3 MB. Free memory was 363.0 MB in the beginning and 349.8 MB in the end (delta: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 5.3 GB. [2018-02-02 21:08:22,176 INFO L168 Benchmark]: Boogie Preprocessor took 24.08 ms. Allocated memory is still 406.3 MB. Free memory was 349.8 MB in the beginning and 348.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 5.3 GB. [2018-02-02 21:08:22,176 INFO L168 Benchmark]: RCFGBuilder took 144.64 ms. Allocated memory is still 406.3 MB. Free memory was 348.5 MB in the beginning and 333.9 MB in the end (delta: 14.5 MB). Peak memory consumption was 14.5 MB. Max. memory is 5.3 GB. [2018-02-02 21:08:22,176 INFO L168 Benchmark]: TraceAbstraction took 949.60 ms. Allocated memory was 406.3 MB in the beginning and 615.5 MB in the end (delta: 209.2 MB). Free memory was 333.9 MB in the beginning and 511.7 MB in the end (delta: -177.8 MB). Peak memory consumption was 31.4 MB. Max. memory is 5.3 GB. [2018-02-02 21:08:22,178 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 406.3 MB. Free memory is still 369.6 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 152.11 ms. Allocated memory is still 406.3 MB. Free memory was 363.0 MB in the beginning and 349.8 MB in the end (delta: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 24.08 ms. Allocated memory is still 406.3 MB. Free memory was 349.8 MB in the beginning and 348.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 5.3 GB. * RCFGBuilder took 144.64 ms. Allocated memory is still 406.3 MB. Free memory was 348.5 MB in the beginning and 333.9 MB in the end (delta: 14.5 MB). Peak memory consumption was 14.5 MB. Max. memory is 5.3 GB. * TraceAbstraction took 949.60 ms. Allocated memory was 406.3 MB in the beginning and 615.5 MB in the end (delta: 209.2 MB). Free memory was 333.9 MB in the beginning and 511.7 MB in the end (delta: -177.8 MB). Peak memory consumption was 31.4 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 1443]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 1443. Possible FailurePath: [L1444] CALL entry_point() [L1435] CALL, EXPR ldv_malloc(sizeof(int)) VAL [\old(size)=4] [L1073] COND TRUE __VERIFIER_nondet_int() [L1074] EXPR, FCALL malloc(size) VAL [\old(size)=4, malloc(size)={6:0}, size=4] [L1074] RET return malloc(size); VAL [\old(size)=4, \result={6:0}, malloc(size)={6:0}, size=4] [L1435] EXPR ldv_malloc(sizeof(int)) VAL [ldv_malloc(sizeof(int))={6:0}] [L1435] int *p = (int *)ldv_malloc(sizeof(int)); [L1436] COND TRUE \read(*p) VAL [p={6:0}] [L1437] CALL, EXPR ldv_malloc(sizeof(int)) VAL [\old(size)=4] [L1073] COND FALSE !(__VERIFIER_nondet_int()) [L1076] RET return 0; VAL [\old(size)=4, \result={0:0}, size=4] [L1437] EXPR ldv_malloc(sizeof(int)) VAL [ldv_malloc(sizeof(int))={0:0}, p={6:0}] [L1437] int *q = (int *)ldv_malloc(sizeof(int)); [L1438] FCALL free(q) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 27 locations, 3 error locations. UNSAFE Result, 0.9s OverallTime, 7 OverallIterations, 2 TraceHistogramMax, 0.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 145 SDtfs, 26 SDslu, 446 SDs, 0 SdLazy, 116 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 54 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred in iteration=1, 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, 6 MinimizatonAttempts, 21 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 167 NumberOfCodeBlocks, 167 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 135 ConstructedInterpolants, 0 QuantifiedInterpolants, 4710 SizeOfPredicates, 1 NumberOfNonLiveVariables, 88 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 7 InterpolantComputations, 6 PerfectInterpolantSequences, 20/22 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Written .csv to /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/memleaks_test4_false-valid-memtrack_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_SmtInterpol_NoArray.epf_AutomizerC.xml/Csv-Benchmark-0-2018-02-02_21-08-22-185.csv Written .csv to /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/memleaks_test4_false-valid-memtrack_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_SmtInterpol_NoArray.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-02-02_21-08-22-185.csv Received shutdown request...