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_test8_true-valid-memsafety_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-c17473d-m [2018-02-04 19:35:11,408 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-02-04 19:35:11,410 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-02-04 19:35:11,422 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-02-04 19:35:11,422 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-02-04 19:35:11,423 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-02-04 19:35:11,424 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-02-04 19:35:11,425 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-02-04 19:35:11,427 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-02-04 19:35:11,427 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-02-04 19:35:11,428 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-02-04 19:35:11,428 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-02-04 19:35:11,429 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-02-04 19:35:11,430 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-02-04 19:35:11,430 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-02-04 19:35:11,432 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-02-04 19:35:11,434 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-02-04 19:35:11,435 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-02-04 19:35:11,436 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-02-04 19:35:11,437 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-02-04 19:35:11,438 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-02-04 19:35:11,442 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-02-04 19:35:11,442 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-02-04 19:35:11,442 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 [2018-02-04 19:35:11,451 INFO L110 SettingsManager]: Loading preferences was successful [2018-02-04 19:35:11,452 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-02-04 19:35:11,453 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-02-04 19:35:11,453 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-02-04 19:35:11,453 INFO L133 SettingsManager]: * Use SBE=true [2018-02-04 19:35:11,453 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-02-04 19:35:11,453 INFO L133 SettingsManager]: * sizeof long=4 [2018-02-04 19:35:11,453 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-02-04 19:35:11,454 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-02-04 19:35:11,454 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-02-04 19:35:11,454 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-02-04 19:35:11,454 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-02-04 19:35:11,454 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-02-04 19:35:11,454 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-02-04 19:35:11,454 INFO L133 SettingsManager]: * sizeof long double=12 [2018-02-04 19:35:11,455 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-02-04 19:35:11,455 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-02-04 19:35:11,455 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-02-04 19:35:11,455 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-02-04 19:35:11,455 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-02-04 19:35:11,455 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-02-04 19:35:11,456 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-02-04 19:35:11,456 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-02-04 19:35:11,456 INFO L133 SettingsManager]: * Trace refinement strategy=SMTINTERPOL [2018-02-04 19:35:11,483 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-02-04 19:35:11,490 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-02-04 19:35:11,493 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-02-04 19:35:11,493 INFO L271 PluginConnector]: Initializing CDTParser... [2018-02-04 19:35:11,494 INFO L276 PluginConnector]: CDTParser initialized [2018-02-04 19:35:11,494 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-memsafety/memleaks_test8_true-valid-memsafety_true-termination.i [2018-02-04 19:35:11,627 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-02-04 19:35:11,628 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-02-04 19:35:11,628 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-02-04 19:35:11,628 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-02-04 19:35:11,632 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-02-04 19:35:11,632 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.02 07:35:11" (1/1) ... [2018-02-04 19:35:11,634 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b089594 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 07:35:11, skipping insertion in model container [2018-02-04 19:35:11,635 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.02 07:35:11" (1/1) ... [2018-02-04 19:35:11,644 INFO L153 Dispatcher]: Using SV-COMP mode [2018-02-04 19:35:11,676 INFO L153 Dispatcher]: Using SV-COMP mode [2018-02-04 19:35:11,757 INFO L450 PostProcessor]: Settings: Checked method=main [2018-02-04 19:35:11,768 INFO L450 PostProcessor]: Settings: Checked method=main [2018-02-04 19:35:11,774 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 07:35:11 WrapperNode [2018-02-04 19:35:11,774 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-02-04 19:35:11,774 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-02-04 19:35:11,775 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-02-04 19:35:11,775 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-02-04 19:35:11,786 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 07:35:11" (1/1) ... [2018-02-04 19:35:11,786 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 07:35:11" (1/1) ... [2018-02-04 19:35:11,793 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 07:35:11" (1/1) ... [2018-02-04 19:35:11,793 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 07:35:11" (1/1) ... [2018-02-04 19:35:11,795 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 07:35:11" (1/1) ... [2018-02-04 19:35:11,796 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 07:35:11" (1/1) ... [2018-02-04 19:35:11,796 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 07:35:11" (1/1) ... [2018-02-04 19:35:11,797 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-02-04 19:35:11,797 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-02-04 19:35:11,797 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-02-04 19:35:11,797 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-02-04 19:35:11,798 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 07:35:11" (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 [2018-02-04 19:35:11,830 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-02-04 19:35:11,830 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-02-04 19:35:11,830 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2018-02-04 19:35:11,831 INFO L136 BoogieDeclarations]: Found implementation of procedure alloc_8 [2018-02-04 19:35:11,831 INFO L136 BoogieDeclarations]: Found implementation of procedure free_8 [2018-02-04 19:35:11,831 INFO L136 BoogieDeclarations]: Found implementation of procedure entry_point [2018-02-04 19:35:11,831 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-02-04 19:35:11,831 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-02-04 19:35:11,831 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-02-04 19:35:11,831 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-02-04 19:35:11,831 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-02-04 19:35:11,831 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-02-04 19:35:11,831 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-02-04 19:35:11,831 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_malloc [2018-02-04 19:35:11,831 INFO L128 BoogieDeclarations]: Found specification of procedure alloc_8 [2018-02-04 19:35:11,831 INFO L128 BoogieDeclarations]: Found specification of procedure free_8 [2018-02-04 19:35:11,832 INFO L128 BoogieDeclarations]: Found specification of procedure entry_point [2018-02-04 19:35:11,832 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-02-04 19:35:11,832 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-02-04 19:35:11,832 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-02-04 19:35:11,937 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-02-04 19:35:11,938 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.02 07:35:11 BoogieIcfgContainer [2018-02-04 19:35:11,938 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-02-04 19:35:11,939 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-02-04 19:35:11,939 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-02-04 19:35:11,941 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-02-04 19:35:11,941 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.02 07:35:11" (1/3) ... [2018-02-04 19:35:11,942 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32edcf0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.02 07:35:11, skipping insertion in model container [2018-02-04 19:35:11,942 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 07:35:11" (2/3) ... [2018-02-04 19:35:11,942 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32edcf0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.02 07:35:11, skipping insertion in model container [2018-02-04 19:35:11,942 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.02 07:35:11" (3/3) ... [2018-02-04 19:35:11,944 INFO L107 eAbstractionObserver]: Analyzing ICFG memleaks_test8_true-valid-memsafety_true-termination.i [2018-02-04 19:35:11,951 INFO L128 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-02-04 19:35:11,956 INFO L140 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2018-02-04 19:35:11,986 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-02-04 19:35:11,986 INFO L323 AbstractCegarLoop]: Hoare is false [2018-02-04 19:35:11,987 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-02-04 19:35:11,987 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-02-04 19:35:11,987 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-02-04 19:35:11,987 INFO L327 AbstractCegarLoop]: Difference is false [2018-02-04 19:35:11,987 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-02-04 19:35:11,987 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-02-04 19:35:11,988 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-02-04 19:35:12,000 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2018-02-04 19:35:12,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-02-04 19:35:12,012 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 19:35:12,013 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 19:35:12,013 INFO L371 AbstractCegarLoop]: === Iteration 1 === [free_8Err0RequiresViolation, free_8Err1RequiresViolation, mainErr0EnsuresViolation]=== [2018-02-04 19:35:12,018 INFO L82 PathProgramCache]: Analyzing trace with hash 132716426, now seen corresponding path program 1 times [2018-02-04 19:35:12,019 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-02-04 19:35:12,020 INFO L67 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-02-04 19:35:12,054 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 19:35:12,054 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-04 19:35:12,054 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 19:35:12,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 19:35:12,096 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 19:35:12,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 19:35:12,168 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 19:35:12,168 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-02-04 19:35:12,169 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-02-04 19:35:12,177 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-02-04 19:35:12,177 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-02-04 19:35:12,178 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 5 states. [2018-02-04 19:35:12,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 19:35:12,299 INFO L93 Difference]: Finished difference Result 41 states and 44 transitions. [2018-02-04 19:35:12,299 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-02-04 19:35:12,300 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2018-02-04 19:35:12,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 19:35:12,307 INFO L225 Difference]: With dead ends: 41 [2018-02-04 19:35:12,307 INFO L226 Difference]: Without dead ends: 38 [2018-02-04 19:35:12,308 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-02-04 19:35:12,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-02-04 19:35:12,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2018-02-04 19:35:12,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-02-04 19:35:12,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2018-02-04 19:35:12,331 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 18 [2018-02-04 19:35:12,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 19:35:12,331 INFO L432 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2018-02-04 19:35:12,331 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-02-04 19:35:12,331 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2018-02-04 19:35:12,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-02-04 19:35:12,332 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 19:35:12,332 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 19:35:12,332 INFO L371 AbstractCegarLoop]: === Iteration 2 === [free_8Err0RequiresViolation, free_8Err1RequiresViolation, mainErr0EnsuresViolation]=== [2018-02-04 19:35:12,332 INFO L82 PathProgramCache]: Analyzing trace with hash 132716427, now seen corresponding path program 1 times [2018-02-04 19:35:12,332 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-02-04 19:35:12,332 INFO L67 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-02-04 19:35:12,333 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 19:35:12,333 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-04 19:35:12,333 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 19:35:12,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 19:35:12,346 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 19:35:12,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 19:35:12,389 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 19:35:12,389 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-02-04 19:35:12,390 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-02-04 19:35:12,391 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-02-04 19:35:12,391 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-02-04 19:35:12,391 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 5 states. [2018-02-04 19:35:12,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 19:35:12,458 INFO L93 Difference]: Finished difference Result 40 states and 43 transitions. [2018-02-04 19:35:12,458 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-02-04 19:35:12,458 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2018-02-04 19:35:12,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 19:35:12,459 INFO L225 Difference]: With dead ends: 40 [2018-02-04 19:35:12,459 INFO L226 Difference]: Without dead ends: 40 [2018-02-04 19:35:12,460 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-02-04 19:35:12,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-02-04 19:35:12,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2018-02-04 19:35:12,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-02-04 19:35:12,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2018-02-04 19:35:12,466 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 18 [2018-02-04 19:35:12,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 19:35:12,466 INFO L432 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2018-02-04 19:35:12,466 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-02-04 19:35:12,467 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2018-02-04 19:35:12,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-02-04 19:35:12,467 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 19:35:12,467 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 19:35:12,467 INFO L371 AbstractCegarLoop]: === Iteration 3 === [free_8Err0RequiresViolation, free_8Err1RequiresViolation, mainErr0EnsuresViolation]=== [2018-02-04 19:35:12,468 INFO L82 PathProgramCache]: Analyzing trace with hash -1026806264, now seen corresponding path program 1 times [2018-02-04 19:35:12,468 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-02-04 19:35:12,468 INFO L67 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-02-04 19:35:12,469 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 19:35:12,469 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-04 19:35:12,469 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 19:35:12,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 19:35:12,483 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 19:35:12,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 19:35:12,528 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 19:35:12,528 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-02-04 19:35:12,528 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-02-04 19:35:12,528 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-02-04 19:35:12,528 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-02-04 19:35:12,528 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand 6 states. [2018-02-04 19:35:12,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 19:35:12,582 INFO L93 Difference]: Finished difference Result 38 states and 41 transitions. [2018-02-04 19:35:12,582 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-02-04 19:35:12,582 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2018-02-04 19:35:12,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 19:35:12,583 INFO L225 Difference]: With dead ends: 38 [2018-02-04 19:35:12,583 INFO L226 Difference]: Without dead ends: 38 [2018-02-04 19:35:12,583 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2018-02-04 19:35:12,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-02-04 19:35:12,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2018-02-04 19:35:12,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-02-04 19:35:12,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 41 transitions. [2018-02-04 19:35:12,587 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 41 transitions. Word has length 20 [2018-02-04 19:35:12,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 19:35:12,587 INFO L432 AbstractCegarLoop]: Abstraction has 38 states and 41 transitions. [2018-02-04 19:35:12,587 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-02-04 19:35:12,587 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 41 transitions. [2018-02-04 19:35:12,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-02-04 19:35:12,588 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 19:35:12,588 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 19:35:12,588 INFO L371 AbstractCegarLoop]: === Iteration 4 === [free_8Err0RequiresViolation, free_8Err1RequiresViolation, mainErr0EnsuresViolation]=== [2018-02-04 19:35:12,588 INFO L82 PathProgramCache]: Analyzing trace with hash -1026806263, now seen corresponding path program 1 times [2018-02-04 19:35:12,588 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-02-04 19:35:12,588 INFO L67 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-02-04 19:35:12,589 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 19:35:12,589 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-04 19:35:12,589 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 19:35:12,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 19:35:12,600 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 19:35:12,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 19:35:12,638 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 19:35:12,638 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-02-04 19:35:12,638 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-02-04 19:35:12,638 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-02-04 19:35:12,638 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-02-04 19:35:12,638 INFO L87 Difference]: Start difference. First operand 38 states and 41 transitions. Second operand 6 states. [2018-02-04 19:35:12,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 19:35:12,681 INFO L93 Difference]: Finished difference Result 40 states and 42 transitions. [2018-02-04 19:35:12,681 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-02-04 19:35:12,681 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2018-02-04 19:35:12,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 19:35:12,682 INFO L225 Difference]: With dead ends: 40 [2018-02-04 19:35:12,682 INFO L226 Difference]: Without dead ends: 40 [2018-02-04 19:35:12,682 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 [2018-02-04 19:35:12,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-02-04 19:35:12,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 27. [2018-02-04 19:35:12,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-02-04 19:35:12,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2018-02-04 19:35:12,684 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 20 [2018-02-04 19:35:12,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 19:35:12,684 INFO L432 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2018-02-04 19:35:12,684 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-02-04 19:35:12,684 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2018-02-04 19:35:12,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-02-04 19:35:12,685 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 19:35:12,685 INFO L351 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] [2018-02-04 19:35:12,685 INFO L371 AbstractCegarLoop]: === Iteration 5 === [free_8Err0RequiresViolation, free_8Err1RequiresViolation, mainErr0EnsuresViolation]=== [2018-02-04 19:35:12,685 INFO L82 PathProgramCache]: Analyzing trace with hash -1070854066, now seen corresponding path program 1 times [2018-02-04 19:35:12,685 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-02-04 19:35:12,685 INFO L67 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-02-04 19:35:12,686 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 19:35:12,686 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-04 19:35:12,686 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 19:35:12,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 19:35:12,691 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 19:35:12,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 19:35:12,711 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 19:35:12,711 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-02-04 19:35:12,711 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-02-04 19:35:12,711 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-02-04 19:35:12,712 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-02-04 19:35:12,712 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand 3 states. [2018-02-04 19:35:12,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 19:35:12,737 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2018-02-04 19:35:12,738 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-02-04 19:35:12,738 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2018-02-04 19:35:12,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 19:35:12,739 INFO L225 Difference]: With dead ends: 39 [2018-02-04 19:35:12,739 INFO L226 Difference]: Without dead ends: 35 [2018-02-04 19:35:12,739 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-02-04 19:35:12,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-02-04 19:35:12,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-02-04 19:35:12,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-02-04 19:35:12,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2018-02-04 19:35:12,745 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 23 [2018-02-04 19:35:12,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 19:35:12,745 INFO L432 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2018-02-04 19:35:12,746 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-02-04 19:35:12,746 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2018-02-04 19:35:12,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-02-04 19:35:12,746 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 19:35:12,746 INFO L351 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] [2018-02-04 19:35:12,747 INFO L371 AbstractCegarLoop]: === Iteration 6 === [free_8Err0RequiresViolation, free_8Err1RequiresViolation, mainErr0EnsuresViolation]=== [2018-02-04 19:35:12,747 INFO L82 PathProgramCache]: Analyzing trace with hash -980957032, now seen corresponding path program 1 times [2018-02-04 19:35:12,747 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-02-04 19:35:12,747 INFO L67 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-02-04 19:35:12,748 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 19:35:12,748 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-04 19:35:12,749 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 19:35:12,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 19:35:12,756 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 19:35:12,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 19:35:12,795 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 19:35:12,795 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-02-04 19:35:12,795 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-02-04 19:35:12,796 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-02-04 19:35:12,796 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-02-04 19:35:12,796 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand 6 states. [2018-02-04 19:35:12,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 19:35:12,853 INFO L93 Difference]: Finished difference Result 37 states and 38 transitions. [2018-02-04 19:35:12,854 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-02-04 19:35:12,854 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2018-02-04 19:35:12,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 19:35:12,855 INFO L225 Difference]: With dead ends: 37 [2018-02-04 19:35:12,855 INFO L226 Difference]: Without dead ends: 30 [2018-02-04 19:35:12,855 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-02-04 19:35:12,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2018-02-04 19:35:12,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 27. [2018-02-04 19:35:12,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-02-04 19:35:12,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2018-02-04 19:35:12,858 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 24 [2018-02-04 19:35:12,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 19:35:12,858 INFO L432 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2018-02-04 19:35:12,858 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-02-04 19:35:12,858 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2018-02-04 19:35:12,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-02-04 19:35:12,859 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 19:35:12,859 INFO L351 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] [2018-02-04 19:35:12,859 INFO L371 AbstractCegarLoop]: === Iteration 7 === [free_8Err0RequiresViolation, free_8Err1RequiresViolation, mainErr0EnsuresViolation]=== [2018-02-04 19:35:12,859 INFO L82 PathProgramCache]: Analyzing trace with hash -1127655280, now seen corresponding path program 1 times [2018-02-04 19:35:12,859 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-02-04 19:35:12,860 INFO L67 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-02-04 19:35:12,861 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 19:35:12,861 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-04 19:35:12,861 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 19:35:12,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 19:35:12,869 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 19:35:12,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 19:35:12,907 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 19:35:12,907 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-02-04 19:35:12,907 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-02-04 19:35:12,908 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-02-04 19:35:12,908 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-02-04 19:35:12,908 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 7 states. [2018-02-04 19:35:12,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 19:35:12,964 INFO L93 Difference]: Finished difference Result 27 states and 26 transitions. [2018-02-04 19:35:12,964 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-02-04 19:35:12,964 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 25 [2018-02-04 19:35:12,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 19:35:12,965 INFO L225 Difference]: With dead ends: 27 [2018-02-04 19:35:12,965 INFO L226 Difference]: Without dead ends: 27 [2018-02-04 19:35:12,965 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-02-04 19:35:12,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-02-04 19:35:12,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-02-04 19:35:12,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-02-04 19:35:12,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 26 transitions. [2018-02-04 19:35:12,968 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 26 transitions. Word has length 25 [2018-02-04 19:35:12,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 19:35:12,968 INFO L432 AbstractCegarLoop]: Abstraction has 27 states and 26 transitions. [2018-02-04 19:35:12,968 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-02-04 19:35:12,968 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 26 transitions. [2018-02-04 19:35:12,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-02-04 19:35:12,969 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 19:35:12,969 INFO L351 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] [2018-02-04 19:35:12,969 INFO L371 AbstractCegarLoop]: === Iteration 8 === [free_8Err0RequiresViolation, free_8Err1RequiresViolation, mainErr0EnsuresViolation]=== [2018-02-04 19:35:12,969 INFO L82 PathProgramCache]: Analyzing trace with hash 1553172630, now seen corresponding path program 1 times [2018-02-04 19:35:12,969 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-02-04 19:35:12,970 INFO L67 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-02-04 19:35:12,971 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 19:35:12,972 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-04 19:35:12,972 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 19:35:12,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 19:35:12,983 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 19:35:12,990 INFO L430 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown lemma type! [2018-02-04 19:35:12,990 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-04 19:35:12,990 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_FP [2018-02-04 19:35:12,992 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-04 19:35:13,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 19:35:13,030 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-04 19:35:13,086 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 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 5 treesize of output 1 [2018-02-04 19:35:13,086 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-02-04 19:35:13,087 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-02-04 19:35:13,088 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:9, output treesize:3 [2018-02-04 19:35:13,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 19:35:13,129 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 19:35:13,129 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-02-04 19:35:13,129 INFO L409 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-02-04 19:35:13,129 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-02-04 19:35:13,129 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=67, Unknown=4, NotChecked=0, Total=90 [2018-02-04 19:35:13,130 INFO L87 Difference]: Start difference. First operand 27 states and 26 transitions. Second operand 10 states. [2018-02-04 19:35:13,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 19:35:13,253 INFO L93 Difference]: Finished difference Result 26 states and 25 transitions. [2018-02-04 19:35:13,253 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-02-04 19:35:13,253 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 26 [2018-02-04 19:35:13,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 19:35:13,254 INFO L225 Difference]: With dead ends: 26 [2018-02-04 19:35:13,254 INFO L226 Difference]: Without dead ends: 0 [2018-02-04 19:35:13,254 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=99, Unknown=4, NotChecked=0, Total=132 [2018-02-04 19:35:13,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-02-04 19:35:13,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-02-04 19:35:13,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-02-04 19:35:13,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-02-04 19:35:13,255 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 26 [2018-02-04 19:35:13,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 19:35:13,255 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-02-04 19:35:13,255 INFO L433 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-02-04 19:35:13,255 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-02-04 19:35:13,255 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-02-04 19:35:13,258 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.02 07:35:13 BoogieIcfgContainer [2018-02-04 19:35:13,258 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-02-04 19:35:13,259 INFO L168 Benchmark]: Toolchain (without parser) took 1631.37 ms. Allocated memory was 407.9 MB in the beginning and 623.9 MB in the end (delta: 216.0 MB). Free memory was 364.8 MB in the beginning and 442.0 MB in the end (delta: -77.2 MB). Peak memory consumption was 138.8 MB. Max. memory is 5.3 GB. [2018-02-04 19:35:13,259 INFO L168 Benchmark]: CDTParser took 0.09 ms. Allocated memory is still 407.9 MB. Free memory is still 371.4 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-02-04 19:35:13,259 INFO L168 Benchmark]: CACSL2BoogieTranslator took 145.87 ms. Allocated memory is still 407.9 MB. Free memory was 364.8 MB in the beginning and 352.9 MB in the end (delta: 11.9 MB). Peak memory consumption was 11.9 MB. Max. memory is 5.3 GB. [2018-02-04 19:35:13,260 INFO L168 Benchmark]: Boogie Preprocessor took 22.56 ms. Allocated memory is still 407.9 MB. Free memory was 352.9 MB in the beginning and 350.2 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 5.3 GB. [2018-02-04 19:35:13,260 INFO L168 Benchmark]: RCFGBuilder took 140.90 ms. Allocated memory is still 407.9 MB. Free memory was 350.2 MB in the beginning and 336.2 MB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 5.3 GB. [2018-02-04 19:35:13,260 INFO L168 Benchmark]: TraceAbstraction took 1319.59 ms. Allocated memory was 407.9 MB in the beginning and 623.9 MB in the end (delta: 216.0 MB). Free memory was 336.2 MB in the beginning and 442.0 MB in the end (delta: -105.8 MB). Peak memory consumption was 110.2 MB. Max. memory is 5.3 GB. [2018-02-04 19:35:13,260 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09 ms. Allocated memory is still 407.9 MB. Free memory is still 371.4 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 145.87 ms. Allocated memory is still 407.9 MB. Free memory was 364.8 MB in the beginning and 352.9 MB in the end (delta: 11.9 MB). Peak memory consumption was 11.9 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 22.56 ms. Allocated memory is still 407.9 MB. Free memory was 352.9 MB in the beginning and 350.2 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 5.3 GB. * RCFGBuilder took 140.90 ms. Allocated memory is still 407.9 MB. Free memory was 350.2 MB in the beginning and 336.2 MB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 5.3 GB. * TraceAbstraction took 1319.59 ms. Allocated memory was 407.9 MB in the beginning and 623.9 MB in the end (delta: 216.0 MB). Free memory was 336.2 MB in the beginning and 442.0 MB in the end (delta: -105.8 MB). Peak memory consumption was 110.2 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 1]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 1]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 1450]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 32 locations, 3 error locations. SAFE Result, 1.2s OverallTime, 8 OverallIterations, 1 TraceHistogramMax, 0.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 207 SDtfs, 125 SDslu, 504 SDs, 0 SdLazy, 289 SolverSat, 25 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 84 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred in iteration=2, 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, 8 MinimizatonAttempts, 18 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 200 NumberOfCodeBlocks, 200 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 166 ConstructedInterpolants, 4 QuantifiedInterpolants, 12681 SizeOfPredicates, 3 NumberOfNonLiveVariables, 122 ConjunctsInSsa, 23 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Written .csv to /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/memleaks_test8_true-valid-memsafety_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_SmtInterpol_NoArray.epf_AutomizerC.xml/Csv-Benchmark-0-2018-02-04_19-35-13-269.csv Written .csv to /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/memleaks_test8_true-valid-memsafety_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_SmtInterpol_NoArray.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-02-04_19-35-13-269.csv Received shutdown request...