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-ccafca9-m [2018-02-04 04:16:40,513 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-02-04 04:16:40,514 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-02-04 04:16:40,524 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-02-04 04:16:40,524 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-02-04 04:16:40,525 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-02-04 04:16:40,526 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-02-04 04:16:40,527 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-02-04 04:16:40,529 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-02-04 04:16:40,529 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-02-04 04:16:40,530 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-02-04 04:16:40,530 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-02-04 04:16:40,531 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-02-04 04:16:40,532 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-02-04 04:16:40,533 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-02-04 04:16:40,535 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-02-04 04:16:40,536 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-02-04 04:16:40,538 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-02-04 04:16:40,539 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-02-04 04:16:40,540 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-02-04 04:16:40,541 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-02-04 04:16:40,545 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-02-04 04:16:40,546 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-02-04 04:16:40,547 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 04:16:40,557 INFO L110 SettingsManager]: Loading preferences was successful [2018-02-04 04:16:40,557 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-02-04 04:16:40,558 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-02-04 04:16:40,558 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-02-04 04:16:40,559 INFO L133 SettingsManager]: * Use SBE=true [2018-02-04 04:16:40,559 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-02-04 04:16:40,559 INFO L133 SettingsManager]: * sizeof long=4 [2018-02-04 04:16:40,559 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-02-04 04:16:40,559 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-02-04 04:16:40,560 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-02-04 04:16:40,560 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-02-04 04:16:40,560 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-02-04 04:16:40,560 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-02-04 04:16:40,560 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-02-04 04:16:40,560 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-02-04 04:16:40,560 INFO L133 SettingsManager]: * sizeof long double=12 [2018-02-04 04:16:40,561 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-02-04 04:16:40,561 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-02-04 04:16:40,561 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-02-04 04:16:40,561 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-02-04 04:16:40,561 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-02-04 04:16:40,562 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-02-04 04:16:40,562 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-02-04 04:16:40,562 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-02-04 04:16:40,562 INFO L133 SettingsManager]: * Trace refinement strategy=SMTINTERPOL [2018-02-04 04:16:40,591 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-02-04 04:16:40,602 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-02-04 04:16:40,605 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-02-04 04:16:40,606 INFO L271 PluginConnector]: Initializing CDTParser... [2018-02-04 04:16:40,607 INFO L276 PluginConnector]: CDTParser initialized [2018-02-04 04:16:40,607 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-memsafety/memleaks_test4_false-valid-memtrack_true-termination.i [2018-02-04 04:16:40,769 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-02-04 04:16:40,770 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-02-04 04:16:40,771 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-02-04 04:16:40,771 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-02-04 04:16:40,777 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-02-04 04:16:40,777 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.02 04:16:40" (1/1) ... [2018-02-04 04:16:40,784 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 04:16:40, skipping insertion in model container [2018-02-04 04:16:40,784 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.02 04:16:40" (1/1) ... [2018-02-04 04:16:40,799 INFO L153 Dispatcher]: Using SV-COMP mode [2018-02-04 04:16:40,849 INFO L153 Dispatcher]: Using SV-COMP mode [2018-02-04 04:16:40,933 INFO L450 PostProcessor]: Settings: Checked method=main [2018-02-04 04:16:40,945 INFO L450 PostProcessor]: Settings: Checked method=main [2018-02-04 04:16:40,950 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:16:40 WrapperNode [2018-02-04 04:16:40,950 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-02-04 04:16:40,950 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-02-04 04:16:40,951 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-02-04 04:16:40,951 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-02-04 04:16:40,959 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:16:40" (1/1) ... [2018-02-04 04:16:40,959 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:16:40" (1/1) ... [2018-02-04 04:16:40,965 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:16:40" (1/1) ... [2018-02-04 04:16:40,965 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:16:40" (1/1) ... [2018-02-04 04:16:40,967 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:16:40" (1/1) ... [2018-02-04 04:16:40,969 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:16:40" (1/1) ... [2018-02-04 04:16:40,970 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:16:40" (1/1) ... [2018-02-04 04:16:40,971 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-02-04 04:16:40,971 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-02-04 04:16:40,972 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-02-04 04:16:40,972 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-02-04 04:16:40,972 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:16:40" (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 04:16:41,008 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-02-04 04:16:41,008 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-02-04 04:16:41,008 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2018-02-04 04:16:41,008 INFO L136 BoogieDeclarations]: Found implementation of procedure entry_point [2018-02-04 04:16:41,008 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-02-04 04:16:41,008 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-02-04 04:16:41,008 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-02-04 04:16:41,008 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-02-04 04:16:41,008 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-02-04 04:16:41,009 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-02-04 04:16:41,009 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-02-04 04:16:41,009 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_malloc [2018-02-04 04:16:41,009 INFO L128 BoogieDeclarations]: Found specification of procedure entry_point [2018-02-04 04:16:41,009 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-02-04 04:16:41,009 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-02-04 04:16:41,009 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-02-04 04:16:41,102 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-02-04 04:16:41,103 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.02 04:16:41 BoogieIcfgContainer [2018-02-04 04:16:41,103 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-02-04 04:16:41,103 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-02-04 04:16:41,103 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-02-04 04:16:41,105 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-02-04 04:16:41,106 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.02 04:16:40" (1/3) ... [2018-02-04 04:16:41,106 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c760e57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.02 04:16:41, skipping insertion in model container [2018-02-04 04:16:41,107 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:16:40" (2/3) ... [2018-02-04 04:16:41,107 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c760e57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.02 04:16:41, skipping insertion in model container [2018-02-04 04:16:41,107 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.02 04:16:41" (3/3) ... [2018-02-04 04:16:41,108 INFO L107 eAbstractionObserver]: Analyzing ICFG memleaks_test4_false-valid-memtrack_true-termination.i [2018-02-04 04:16:41,114 INFO L128 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-02-04 04:16:41,119 INFO L140 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2018-02-04 04:16:41,143 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-02-04 04:16:41,144 INFO L323 AbstractCegarLoop]: Hoare is false [2018-02-04 04:16:41,144 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-02-04 04:16:41,144 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-02-04 04:16:41,144 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-02-04 04:16:41,144 INFO L327 AbstractCegarLoop]: Difference is false [2018-02-04 04:16:41,144 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-02-04 04:16:41,145 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-02-04 04:16:41,145 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-02-04 04:16:41,157 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2018-02-04 04:16:41,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-02-04 04:16:41,166 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 04:16:41,167 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 04:16:41,167 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr0EnsuresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation]=== [2018-02-04 04:16:41,171 INFO L82 PathProgramCache]: Analyzing trace with hash -1713265670, now seen corresponding path program 1 times [2018-02-04 04:16:41,173 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-02-04 04:16:41,174 INFO L67 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-02-04 04:16:41,222 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 04:16:41,222 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-04 04:16:41,222 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 04:16:41,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:16:41,262 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 04:16:41,313 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 04:16:41,315 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 04:16:41,315 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-02-04 04:16:41,316 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-02-04 04:16:41,324 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-02-04 04:16:41,324 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-02-04 04:16:41,326 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 3 states. [2018-02-04 04:16:41,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 04:16:41,407 INFO L93 Difference]: Finished difference Result 39 states and 45 transitions. [2018-02-04 04:16:41,408 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-02-04 04:16:41,409 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2018-02-04 04:16:41,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 04:16:41,417 INFO L225 Difference]: With dead ends: 39 [2018-02-04 04:16:41,417 INFO L226 Difference]: Without dead ends: 33 [2018-02-04 04:16:41,419 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 [2018-02-04 04:16:41,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-02-04 04:16:41,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 28. [2018-02-04 04:16:41,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-02-04 04:16:41,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2018-02-04 04:16:41,490 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 16 [2018-02-04 04:16:41,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 04:16:41,490 INFO L432 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2018-02-04 04:16:41,490 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-02-04 04:16:41,490 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2018-02-04 04:16:41,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-02-04 04:16:41,491 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 04:16:41,491 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 04:16:41,491 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr0EnsuresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation]=== [2018-02-04 04:16:41,492 INFO L82 PathProgramCache]: Analyzing trace with hash 295629500, now seen corresponding path program 1 times [2018-02-04 04:16:41,492 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-02-04 04:16:41,492 INFO L67 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-02-04 04:16:41,493 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 04:16:41,494 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-04 04:16:41,494 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 04:16:41,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:16:41,509 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 04:16:41,555 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 04:16:41,555 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 04:16:41,555 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-02-04 04:16:41,556 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-02-04 04:16:41,557 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-02-04 04:16:41,557 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-02-04 04:16:41,557 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand 6 states. [2018-02-04 04:16:41,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 04:16:41,594 INFO L93 Difference]: Finished difference Result 35 states and 39 transitions. [2018-02-04 04:16:41,594 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-02-04 04:16:41,594 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2018-02-04 04:16:41,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 04:16:41,595 INFO L225 Difference]: With dead ends: 35 [2018-02-04 04:16:41,595 INFO L226 Difference]: Without dead ends: 35 [2018-02-04 04:16:41,596 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 04:16:41,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-02-04 04:16:41,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 24. [2018-02-04 04:16:41,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-02-04 04:16:41,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2018-02-04 04:16:41,601 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 18 [2018-02-04 04:16:41,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 04:16:41,602 INFO L432 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2018-02-04 04:16:41,602 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-02-04 04:16:41,602 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2018-02-04 04:16:41,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-02-04 04:16:41,603 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 04:16:41,603 INFO L351 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 04:16:41,603 INFO L371 AbstractCegarLoop]: === Iteration 3 === [mainErr0EnsuresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation]=== [2018-02-04 04:16:41,603 INFO L82 PathProgramCache]: Analyzing trace with hash -1865005914, now seen corresponding path program 1 times [2018-02-04 04:16:41,603 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-02-04 04:16:41,603 INFO L67 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-02-04 04:16:41,605 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 04:16:41,605 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-04 04:16:41,605 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 04:16:41,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:16:41,617 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 04:16:41,653 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-02-04 04:16:41,653 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 04:16:41,654 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-02-04 04:16:41,654 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-02-04 04:16:41,654 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-02-04 04:16:41,654 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-02-04 04:16:41,655 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand 5 states. [2018-02-04 04:16:41,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 04:16:41,672 INFO L93 Difference]: Finished difference Result 29 states and 31 transitions. [2018-02-04 04:16:41,672 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-02-04 04:16:41,672 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2018-02-04 04:16:41,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 04:16:41,673 INFO L225 Difference]: With dead ends: 29 [2018-02-04 04:16:41,673 INFO L226 Difference]: Without dead ends: 29 [2018-02-04 04:16:41,674 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 [2018-02-04 04:16:41,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-02-04 04:16:41,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2018-02-04 04:16:41,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-02-04 04:16:41,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2018-02-04 04:16:41,678 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 20 [2018-02-04 04:16:41,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 04:16:41,678 INFO L432 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2018-02-04 04:16:41,678 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-02-04 04:16:41,679 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2018-02-04 04:16:41,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-02-04 04:16:41,679 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 04:16:41,679 INFO L351 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 04:16:41,680 INFO L371 AbstractCegarLoop]: === Iteration 4 === [mainErr0EnsuresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation]=== [2018-02-04 04:16:41,680 INFO L82 PathProgramCache]: Analyzing trace with hash -1865005913, now seen corresponding path program 1 times [2018-02-04 04:16:41,680 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-02-04 04:16:41,680 INFO L67 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-02-04 04:16:41,681 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 04:16:41,682 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-04 04:16:41,682 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 04:16:41,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:16:41,694 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 04:16:41,738 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-02-04 04:16:41,738 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 04:16:41,739 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-02-04 04:16:41,739 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-02-04 04:16:41,739 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-02-04 04:16:41,740 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-02-04 04:16:41,740 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand 5 states. [2018-02-04 04:16:41,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 04:16:41,756 INFO L93 Difference]: Finished difference Result 30 states and 32 transitions. [2018-02-04 04:16:41,757 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-02-04 04:16:41,757 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2018-02-04 04:16:41,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 04:16:41,757 INFO L225 Difference]: With dead ends: 30 [2018-02-04 04:16:41,758 INFO L226 Difference]: Without dead ends: 30 [2018-02-04 04:16:41,758 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 [2018-02-04 04:16:41,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2018-02-04 04:16:41,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2018-02-04 04:16:41,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-02-04 04:16:41,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2018-02-04 04:16:41,761 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 20 [2018-02-04 04:16:41,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 04:16:41,762 INFO L432 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2018-02-04 04:16:41,762 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-02-04 04:16:41,762 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2018-02-04 04:16:41,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-02-04 04:16:41,763 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 04:16:41,763 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] [2018-02-04 04:16:41,763 INFO L371 AbstractCegarLoop]: === Iteration 5 === [mainErr0EnsuresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation]=== [2018-02-04 04:16:41,763 INFO L82 PathProgramCache]: Analyzing trace with hash 245416420, now seen corresponding path program 1 times [2018-02-04 04:16:41,763 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-02-04 04:16:41,763 INFO L67 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-02-04 04:16:41,764 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 04:16:41,764 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-04 04:16:41,764 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 04:16:41,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:16:41,772 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 04:16:41,812 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-02-04 04:16:41,812 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-04 04:16:41,812 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_FP [2018-02-04 04:16:41,813 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-04 04:16:41,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:16:41,841 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-04 04:16:41,872 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-02-04 04:16:41,872 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-02-04 04:16:41,872 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 9 [2018-02-04 04:16:41,872 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-02-04 04:16:41,872 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-02-04 04:16:41,873 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2018-02-04 04:16:41,873 INFO L87 Difference]: Start difference. First operand 28 states and 30 transitions. Second operand 9 states. [2018-02-04 04:16:41,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 04:16:41,897 INFO L93 Difference]: Finished difference Result 29 states and 30 transitions. [2018-02-04 04:16:41,897 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-02-04 04:16:41,898 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 22 [2018-02-04 04:16:41,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 04:16:41,898 INFO L225 Difference]: With dead ends: 29 [2018-02-04 04:16:41,898 INFO L226 Difference]: Without dead ends: 27 [2018-02-04 04:16:41,898 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 [2018-02-04 04:16:41,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-02-04 04:16:41,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-02-04 04:16:41,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-02-04 04:16:41,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2018-02-04 04:16:41,900 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 22 [2018-02-04 04:16:41,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 04:16:41,901 INFO L432 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2018-02-04 04:16:41,901 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-02-04 04:16:41,901 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2018-02-04 04:16:41,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-02-04 04:16:41,901 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 04:16:41,901 INFO L351 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 04:16:41,901 INFO L371 AbstractCegarLoop]: === Iteration 6 === [mainErr0EnsuresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation]=== [2018-02-04 04:16:41,901 INFO L82 PathProgramCache]: Analyzing trace with hash 1092908839, now seen corresponding path program 1 times [2018-02-04 04:16:41,901 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-02-04 04:16:41,902 INFO L67 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-02-04 04:16:41,902 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 04:16:41,903 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-04 04:16:41,903 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 04:16:41,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:16:41,914 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 04:16:41,966 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-02-04 04:16:41,966 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 04:16:41,966 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-02-04 04:16:41,967 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-02-04 04:16:41,967 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-02-04 04:16:41,967 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-02-04 04:16:41,967 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand 6 states. [2018-02-04 04:16:42,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 04:16:42,037 INFO L93 Difference]: Finished difference Result 26 states and 27 transitions. [2018-02-04 04:16:42,037 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-02-04 04:16:42,037 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2018-02-04 04:16:42,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 04:16:42,037 INFO L225 Difference]: With dead ends: 26 [2018-02-04 04:16:42,037 INFO L226 Difference]: Without dead ends: 26 [2018-02-04 04:16:42,038 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 [2018-02-04 04:16:42,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-02-04 04:16:42,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2018-02-04 04:16:42,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-02-04 04:16:42,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2018-02-04 04:16:42,039 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 24 [2018-02-04 04:16:42,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 04:16:42,039 INFO L432 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2018-02-04 04:16:42,039 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-02-04 04:16:42,040 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2018-02-04 04:16:42,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-02-04 04:16:42,040 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 04:16:42,040 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] [2018-02-04 04:16:42,040 INFO L371 AbstractCegarLoop]: === Iteration 7 === [mainErr0EnsuresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation]=== [2018-02-04 04:16:42,040 INFO L82 PathProgramCache]: Analyzing trace with hash -191782558, now seen corresponding path program 1 times [2018-02-04 04:16:42,040 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-02-04 04:16:42,040 INFO L67 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-02-04 04:16:42,041 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 04:16:42,041 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-04 04:16:42,041 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 04:16:42,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-02-04 04:16:42,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-02-04 04:16:42,068 INFO L410 BasicCegarLoop]: Counterexample might be feasible [2018-02-04 04:16:42,075 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-02-04 04:16:42,082 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.02 04:16:42 BoogieIcfgContainer [2018-02-04 04:16:42,082 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-02-04 04:16:42,083 INFO L168 Benchmark]: Toolchain (without parser) took 1313.56 ms. Allocated memory was 405.8 MB in the beginning and 610.3 MB in the end (delta: 204.5 MB). Free memory was 359.8 MB in the beginning and 508.2 MB in the end (delta: -148.3 MB). Peak memory consumption was 56.2 MB. Max. memory is 5.3 GB. [2018-02-04 04:16:42,083 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 405.8 MB. Free memory is still 366.4 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-02-04 04:16:42,084 INFO L168 Benchmark]: CACSL2BoogieTranslator took 179.51 ms. Allocated memory is still 405.8 MB. Free memory was 359.8 MB in the beginning and 346.6 MB in the end (delta: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 5.3 GB. [2018-02-04 04:16:42,084 INFO L168 Benchmark]: Boogie Preprocessor took 20.59 ms. Allocated memory is still 405.8 MB. Free memory was 346.6 MB in the beginning and 345.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 5.3 GB. [2018-02-04 04:16:42,084 INFO L168 Benchmark]: RCFGBuilder took 131.40 ms. Allocated memory is still 405.8 MB. Free memory was 345.3 MB in the beginning and 330.8 MB in the end (delta: 14.5 MB). Peak memory consumption was 14.5 MB. Max. memory is 5.3 GB. [2018-02-04 04:16:42,084 INFO L168 Benchmark]: TraceAbstraction took 979.22 ms. Allocated memory was 405.8 MB in the beginning and 610.3 MB in the end (delta: 204.5 MB). Free memory was 330.8 MB in the beginning and 508.2 MB in the end (delta: -177.4 MB). Peak memory consumption was 27.1 MB. Max. memory is 5.3 GB. [2018-02-04 04:16:42,085 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 405.8 MB. Free memory is still 366.4 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 179.51 ms. Allocated memory is still 405.8 MB. Free memory was 359.8 MB in the beginning and 346.6 MB in the end (delta: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 20.59 ms. Allocated memory is still 405.8 MB. Free memory was 346.6 MB in the beginning and 345.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 5.3 GB. * RCFGBuilder took 131.40 ms. Allocated memory is still 405.8 MB. Free memory was 345.3 MB in the beginning and 330.8 MB in the end (delta: 14.5 MB). Peak memory consumption was 14.5 MB. Max. memory is 5.3 GB. * TraceAbstraction took 979.22 ms. Allocated memory was 405.8 MB in the beginning and 610.3 MB in the end (delta: 204.5 MB). Free memory was 330.8 MB in the beginning and 508.2 MB in the end (delta: -177.4 MB). Peak memory consumption was 27.1 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, 0.2s 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, 0.3s 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-0-2018-02-04_04-16-42-091.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-0-2018-02-04_04-16-42-091.csv Received shutdown request...