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_test3_true-valid-memsafety_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-c17473d-m [2018-02-04 19:31:58,663 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-02-04 19:31:58,665 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-02-04 19:31:58,676 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-02-04 19:31:58,677 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-02-04 19:31:58,677 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-02-04 19:31:58,678 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-02-04 19:31:58,680 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-02-04 19:31:58,681 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-02-04 19:31:58,682 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-02-04 19:31:58,683 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-02-04 19:31:58,683 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-02-04 19:31:58,683 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-02-04 19:31:58,684 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-02-04 19:31:58,685 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-02-04 19:31:58,687 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-02-04 19:31:58,688 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-02-04 19:31:58,690 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-02-04 19:31:58,691 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-02-04 19:31:58,692 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-02-04 19:31:58,693 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-02-04 19:31:58,698 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 19:31:58,707 INFO L110 SettingsManager]: Loading preferences was successful [2018-02-04 19:31:58,707 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-02-04 19:31:58,708 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-02-04 19:31:58,708 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-02-04 19:31:58,709 INFO L133 SettingsManager]: * Use SBE=true [2018-02-04 19:31:58,709 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-02-04 19:31:58,709 INFO L133 SettingsManager]: * sizeof long=4 [2018-02-04 19:31:58,709 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-02-04 19:31:58,709 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-02-04 19:31:58,709 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-02-04 19:31:58,710 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-02-04 19:31:58,710 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-02-04 19:31:58,710 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-02-04 19:31:58,710 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-02-04 19:31:58,710 INFO L133 SettingsManager]: * sizeof long double=12 [2018-02-04 19:31:58,710 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-02-04 19:31:58,711 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-02-04 19:31:58,711 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-02-04 19:31:58,711 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-02-04 19:31:58,711 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-02-04 19:31:58,711 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-02-04 19:31:58,711 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-02-04 19:31:58,712 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-02-04 19:31:58,712 INFO L133 SettingsManager]: * Trace refinement strategy=SMTINTERPOL [2018-02-04 19:31:58,739 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-02-04 19:31:58,748 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-02-04 19:31:58,751 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-02-04 19:31:58,752 INFO L271 PluginConnector]: Initializing CDTParser... [2018-02-04 19:31:58,753 INFO L276 PluginConnector]: CDTParser initialized [2018-02-04 19:31:58,753 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-memsafety/memleaks_test3_true-valid-memsafety_true-termination.i [2018-02-04 19:31:58,905 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-02-04 19:31:58,906 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-02-04 19:31:58,907 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-02-04 19:31:58,907 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-02-04 19:31:58,912 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-02-04 19:31:58,913 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.02 07:31:58" (1/1) ... [2018-02-04 19:31:58,916 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 07:31:58, skipping insertion in model container [2018-02-04 19:31:58,916 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.02 07:31:58" (1/1) ... [2018-02-04 19:31:58,930 INFO L153 Dispatcher]: Using SV-COMP mode [2018-02-04 19:31:58,967 INFO L153 Dispatcher]: Using SV-COMP mode [2018-02-04 19:31:59,051 INFO L450 PostProcessor]: Settings: Checked method=main [2018-02-04 19:31:59,060 INFO L450 PostProcessor]: Settings: Checked method=main [2018-02-04 19:31:59,063 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 07:31:59 WrapperNode [2018-02-04 19:31:59,064 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-02-04 19:31:59,064 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-02-04 19:31:59,064 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-02-04 19:31:59,064 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-02-04 19:31:59,073 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 07:31:59" (1/1) ... [2018-02-04 19:31:59,073 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 07:31:59" (1/1) ... [2018-02-04 19:31:59,078 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 07:31:59" (1/1) ... [2018-02-04 19:31:59,079 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 07:31:59" (1/1) ... [2018-02-04 19:31:59,081 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 07:31:59" (1/1) ... [2018-02-04 19:31:59,082 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 07:31:59" (1/1) ... [2018-02-04 19:31:59,083 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 07:31:59" (1/1) ... [2018-02-04 19:31:59,085 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-02-04 19:31:59,085 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-02-04 19:31:59,085 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-02-04 19:31:59,085 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-02-04 19:31:59,086 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 07:31:59" (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 19:31:59,120 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-02-04 19:31:59,121 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-02-04 19:31:59,121 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2018-02-04 19:31:59,121 INFO L136 BoogieDeclarations]: Found implementation of procedure h_safe [2018-02-04 19:31:59,121 INFO L136 BoogieDeclarations]: Found implementation of procedure entry_point [2018-02-04 19:31:59,121 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-02-04 19:31:59,121 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-02-04 19:31:59,121 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-02-04 19:31:59,121 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-02-04 19:31:59,121 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-02-04 19:31:59,121 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-02-04 19:31:59,121 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-02-04 19:31:59,122 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_malloc [2018-02-04 19:31:59,122 INFO L128 BoogieDeclarations]: Found specification of procedure h_safe [2018-02-04 19:31:59,122 INFO L128 BoogieDeclarations]: Found specification of procedure entry_point [2018-02-04 19:31:59,122 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-02-04 19:31:59,122 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-02-04 19:31:59,122 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-02-04 19:31:59,210 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-02-04 19:31:59,210 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.02 07:31:59 BoogieIcfgContainer [2018-02-04 19:31:59,210 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-02-04 19:31:59,211 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-02-04 19:31:59,211 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-02-04 19:31:59,212 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-02-04 19:31:59,213 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.02 07:31:58" (1/3) ... [2018-02-04 19:31:59,213 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b92ad85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.02 07:31:59, skipping insertion in model container [2018-02-04 19:31:59,213 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 07:31:59" (2/3) ... [2018-02-04 19:31:59,213 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b92ad85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.02 07:31:59, skipping insertion in model container [2018-02-04 19:31:59,213 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.02 07:31:59" (3/3) ... [2018-02-04 19:31:59,215 INFO L107 eAbstractionObserver]: Analyzing ICFG memleaks_test3_true-valid-memsafety_true-termination.i [2018-02-04 19:31:59,220 INFO L128 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-02-04 19:31:59,224 INFO L140 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2018-02-04 19:31:59,254 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-02-04 19:31:59,254 INFO L323 AbstractCegarLoop]: Hoare is false [2018-02-04 19:31:59,254 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-02-04 19:31:59,254 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-02-04 19:31:59,254 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-02-04 19:31:59,254 INFO L327 AbstractCegarLoop]: Difference is false [2018-02-04 19:31:59,254 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-02-04 19:31:59,254 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-02-04 19:31:59,255 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-02-04 19:31:59,262 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2018-02-04 19:31:59,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-02-04 19:31:59,270 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 19:31:59,271 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 19:31:59,271 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr0EnsuresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation]=== [2018-02-04 19:31:59,274 INFO L82 PathProgramCache]: Analyzing trace with hash -36513995, now seen corresponding path program 1 times [2018-02-04 19:31:59,275 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-02-04 19:31:59,275 INFO L67 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-02-04 19:31:59,311 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 19:31:59,311 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-04 19:31:59,311 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 19:31:59,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 19:31:59,351 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 19:31:59,452 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 19:31:59,455 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 19:31:59,455 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-02-04 19:31:59,457 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-02-04 19:31:59,467 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-02-04 19:31:59,467 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-02-04 19:31:59,468 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 7 states. [2018-02-04 19:31:59,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 19:31:59,590 INFO L93 Difference]: Finished difference Result 38 states and 40 transitions. [2018-02-04 19:31:59,591 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-02-04 19:31:59,592 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2018-02-04 19:31:59,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 19:31:59,598 INFO L225 Difference]: With dead ends: 38 [2018-02-04 19:31:59,598 INFO L226 Difference]: Without dead ends: 35 [2018-02-04 19:31:59,599 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-02-04 19:31:59,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-02-04 19:31:59,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 34. [2018-02-04 19:31:59,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-02-04 19:31:59,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 37 transitions. [2018-02-04 19:31:59,620 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 37 transitions. Word has length 18 [2018-02-04 19:31:59,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 19:31:59,620 INFO L432 AbstractCegarLoop]: Abstraction has 34 states and 37 transitions. [2018-02-04 19:31:59,620 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-02-04 19:31:59,620 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 37 transitions. [2018-02-04 19:31:59,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-02-04 19:31:59,621 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 19:31:59,621 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 19:31:59,621 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr0EnsuresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation]=== [2018-02-04 19:31:59,621 INFO L82 PathProgramCache]: Analyzing trace with hash -36513994, now seen corresponding path program 1 times [2018-02-04 19:31:59,621 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-02-04 19:31:59,621 INFO L67 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-02-04 19:31:59,622 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 19:31:59,622 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-04 19:31:59,622 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 19:31:59,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 19:31:59,633 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 19:31:59,682 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 19:31:59,682 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 19:31:59,683 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-02-04 19:31:59,684 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-02-04 19:31:59,684 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-02-04 19:31:59,684 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-02-04 19:31:59,685 INFO L87 Difference]: Start difference. First operand 34 states and 37 transitions. Second operand 7 states. [2018-02-04 19:31:59,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 19:31:59,722 INFO L93 Difference]: Finished difference Result 36 states and 38 transitions. [2018-02-04 19:31:59,722 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-02-04 19:31:59,722 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2018-02-04 19:31:59,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 19:31:59,724 INFO L225 Difference]: With dead ends: 36 [2018-02-04 19:31:59,724 INFO L226 Difference]: Without dead ends: 36 [2018-02-04 19:31:59,725 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-02-04 19:31:59,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-02-04 19:31:59,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 34. [2018-02-04 19:31:59,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-02-04 19:31:59,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 36 transitions. [2018-02-04 19:31:59,730 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 36 transitions. Word has length 18 [2018-02-04 19:31:59,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 19:31:59,730 INFO L432 AbstractCegarLoop]: Abstraction has 34 states and 36 transitions. [2018-02-04 19:31:59,730 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-02-04 19:31:59,730 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 36 transitions. [2018-02-04 19:31:59,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-02-04 19:31:59,731 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 19:31:59,731 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 19:31:59,731 INFO L371 AbstractCegarLoop]: === Iteration 3 === [mainErr0EnsuresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation]=== [2018-02-04 19:31:59,731 INFO L82 PathProgramCache]: Analyzing trace with hash 133826739, now seen corresponding path program 1 times [2018-02-04 19:31:59,732 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-02-04 19:31:59,732 INFO L67 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-02-04 19:31:59,733 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 19:31:59,733 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-04 19:31:59,733 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 19:31:59,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 19:31:59,747 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 19:31:59,793 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 19:31:59,793 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 19:31:59,793 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-02-04 19:31:59,794 INFO L409 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-02-04 19:31:59,794 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-02-04 19:31:59,794 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-02-04 19:31:59,794 INFO L87 Difference]: Start difference. First operand 34 states and 36 transitions. Second operand 8 states. [2018-02-04 19:31:59,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 19:31:59,821 INFO L93 Difference]: Finished difference Result 33 states and 35 transitions. [2018-02-04 19:31:59,821 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-02-04 19:31:59,821 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 20 [2018-02-04 19:31:59,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 19:31:59,822 INFO L225 Difference]: With dead ends: 33 [2018-02-04 19:31:59,822 INFO L226 Difference]: Without dead ends: 33 [2018-02-04 19:31:59,822 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-02-04 19:31:59,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-02-04 19:31:59,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-02-04 19:31:59,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-02-04 19:31:59,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2018-02-04 19:31:59,826 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 20 [2018-02-04 19:31:59,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 19:31:59,827 INFO L432 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2018-02-04 19:31:59,827 INFO L433 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-02-04 19:31:59,827 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2018-02-04 19:31:59,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-02-04 19:31:59,828 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 19:31:59,828 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 19:31:59,828 INFO L371 AbstractCegarLoop]: === Iteration 4 === [mainErr0EnsuresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation]=== [2018-02-04 19:31:59,828 INFO L82 PathProgramCache]: Analyzing trace with hash 133826740, now seen corresponding path program 1 times [2018-02-04 19:31:59,828 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-02-04 19:31:59,828 INFO L67 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-02-04 19:31:59,830 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 19:31:59,830 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-04 19:31:59,830 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 19:31:59,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 19:31:59,842 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 19:31:59,903 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 19:31:59,903 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 19:31:59,903 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-02-04 19:31:59,903 INFO L409 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-02-04 19:31:59,904 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-02-04 19:31:59,904 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-02-04 19:31:59,904 INFO L87 Difference]: Start difference. First operand 33 states and 35 transitions. Second operand 8 states. [2018-02-04 19:31:59,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 19:31:59,993 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2018-02-04 19:31:59,993 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-02-04 19:31:59,993 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 20 [2018-02-04 19:31:59,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 19:31:59,994 INFO L225 Difference]: With dead ends: 34 [2018-02-04 19:31:59,994 INFO L226 Difference]: Without dead ends: 34 [2018-02-04 19:31:59,995 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-02-04 19:31:59,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-02-04 19:31:59,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 24. [2018-02-04 19:31:59,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-02-04 19:31:59,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2018-02-04 19:31:59,997 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 20 [2018-02-04 19:31:59,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 19:31:59,998 INFO L432 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2018-02-04 19:31:59,998 INFO L433 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-02-04 19:31:59,998 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2018-02-04 19:31:59,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-02-04 19:31:59,998 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 19:31:59,999 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 19:31:59,999 INFO L371 AbstractCegarLoop]: === Iteration 5 === [mainErr0EnsuresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation]=== [2018-02-04 19:31:59,999 INFO L82 PathProgramCache]: Analyzing trace with hash -730055936, now seen corresponding path program 1 times [2018-02-04 19:31:59,999 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-02-04 19:31:59,999 INFO L67 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-02-04 19:32:00,000 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 19:32:00,000 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-04 19:32:00,001 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 19:32:00,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 19:32:00,008 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 19:32:00,029 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 19:32:00,029 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 19:32:00,029 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-02-04 19:32:00,030 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-02-04 19:32:00,030 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-02-04 19:32:00,030 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-02-04 19:32:00,030 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand 3 states. [2018-02-04 19:32:00,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 19:32:00,047 INFO L93 Difference]: Finished difference Result 35 states and 36 transitions. [2018-02-04 19:32:00,047 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-02-04 19:32:00,047 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2018-02-04 19:32:00,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 19:32:00,048 INFO L225 Difference]: With dead ends: 35 [2018-02-04 19:32:00,048 INFO L226 Difference]: Without dead ends: 32 [2018-02-04 19:32:00,048 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 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 19:32:00,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-02-04 19:32:00,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2018-02-04 19:32:00,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-02-04 19:32:00,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2018-02-04 19:32:00,052 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 20 [2018-02-04 19:32:00,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 19:32:00,052 INFO L432 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2018-02-04 19:32:00,052 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-02-04 19:32:00,052 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2018-02-04 19:32:00,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-02-04 19:32:00,053 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 19:32:00,053 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] [2018-02-04 19:32:00,053 INFO L371 AbstractCegarLoop]: === Iteration 6 === [mainErr0EnsuresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation]=== [2018-02-04 19:32:00,053 INFO L82 PathProgramCache]: Analyzing trace with hash -1161698987, now seen corresponding path program 1 times [2018-02-04 19:32:00,053 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-02-04 19:32:00,053 INFO L67 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-02-04 19:32:00,054 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 19:32:00,054 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-04 19:32:00,054 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 19:32:00,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 19:32:00,062 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 19:32:00,108 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 19:32:00,108 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 19:32:00,108 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-02-04 19:32:00,109 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-02-04 19:32:00,109 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-02-04 19:32:00,109 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-02-04 19:32:00,109 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand 7 states. [2018-02-04 19:32:00,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 19:32:00,123 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2018-02-04 19:32:00,124 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-02-04 19:32:00,124 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2018-02-04 19:32:00,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 19:32:00,125 INFO L225 Difference]: With dead ends: 33 [2018-02-04 19:32:00,125 INFO L226 Difference]: Without dead ends: 26 [2018-02-04 19:32:00,125 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-02-04 19:32:00,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-02-04 19:32:00,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2018-02-04 19:32:00,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-02-04 19:32:00,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2018-02-04 19:32:00,128 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 21 [2018-02-04 19:32:00,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 19:32:00,128 INFO L432 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2018-02-04 19:32:00,128 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-02-04 19:32:00,128 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2018-02-04 19:32:00,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-02-04 19:32:00,129 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 19:32:00,129 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] [2018-02-04 19:32:00,129 INFO L371 AbstractCegarLoop]: === Iteration 7 === [mainErr0EnsuresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation]=== [2018-02-04 19:32:00,129 INFO L82 PathProgramCache]: Analyzing trace with hash -241367810, now seen corresponding path program 1 times [2018-02-04 19:32:00,130 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-02-04 19:32:00,130 INFO L67 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-02-04 19:32:00,131 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 19:32:00,131 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-04 19:32:00,131 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 19:32:00,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 19:32:00,139 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 19:32:00,179 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 19:32:00,180 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 19:32:00,180 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-02-04 19:32:00,180 INFO L409 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-02-04 19:32:00,180 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-02-04 19:32:00,180 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-02-04 19:32:00,180 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand 8 states. [2018-02-04 19:32:00,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 19:32:00,211 INFO L93 Difference]: Finished difference Result 24 states and 23 transitions. [2018-02-04 19:32:00,211 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-02-04 19:32:00,212 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 22 [2018-02-04 19:32:00,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 19:32:00,212 INFO L225 Difference]: With dead ends: 24 [2018-02-04 19:32:00,212 INFO L226 Difference]: Without dead ends: 24 [2018-02-04 19:32:00,213 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-02-04 19:32:00,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-02-04 19:32:00,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2018-02-04 19:32:00,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-02-04 19:32:00,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 23 transitions. [2018-02-04 19:32:00,217 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 23 transitions. Word has length 22 [2018-02-04 19:32:00,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 19:32:00,218 INFO L432 AbstractCegarLoop]: Abstraction has 24 states and 23 transitions. [2018-02-04 19:32:00,218 INFO L433 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-02-04 19:32:00,218 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 23 transitions. [2018-02-04 19:32:00,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-02-04 19:32:00,218 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 19:32:00,218 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 19:32:00,218 INFO L371 AbstractCegarLoop]: === Iteration 8 === [mainErr0EnsuresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation]=== [2018-02-04 19:32:00,219 INFO L82 PathProgramCache]: Analyzing trace with hash 1102731031, now seen corresponding path program 1 times [2018-02-04 19:32:00,219 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-02-04 19:32:00,219 INFO L67 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-02-04 19:32:00,220 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 19:32:00,220 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-04 19:32:00,220 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 19:32:00,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 19:32:00,234 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 19:32:00,247 INFO L430 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown lemma type! [2018-02-04 19:32:00,247 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-04 19:32:00,247 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_FP [2018-02-04 19:32:00,249 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-04 19:32:00,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 19:32:00,280 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-04 19:32:00,392 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 19:32:00,392 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 19:32:00,393 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-02-04 19:32:00,393 INFO L409 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-02-04 19:32:00,393 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-02-04 19:32:00,393 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=82, Unknown=7, NotChecked=0, Total=110 [2018-02-04 19:32:00,393 INFO L87 Difference]: Start difference. First operand 24 states and 23 transitions. Second operand 11 states. [2018-02-04 19:32:00,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 19:32:00,494 INFO L93 Difference]: Finished difference Result 23 states and 22 transitions. [2018-02-04 19:32:00,494 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-02-04 19:32:00,494 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 23 [2018-02-04 19:32:00,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 19:32:00,494 INFO L225 Difference]: With dead ends: 23 [2018-02-04 19:32:00,494 INFO L226 Difference]: Without dead ends: 0 [2018-02-04 19:32:00,494 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=100, Unknown=7, NotChecked=0, Total=132 [2018-02-04 19:32:00,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-02-04 19:32:00,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-02-04 19:32:00,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-02-04 19:32:00,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-02-04 19:32:00,495 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 23 [2018-02-04 19:32:00,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 19:32:00,495 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-02-04 19:32:00,495 INFO L433 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-02-04 19:32:00,495 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-02-04 19:32:00,495 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-02-04 19:32:00,498 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.02 07:32:00 BoogieIcfgContainer [2018-02-04 19:32:00,498 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-02-04 19:32:00,499 INFO L168 Benchmark]: Toolchain (without parser) took 1593.41 ms. Allocated memory was 402.7 MB in the beginning and 606.1 MB in the end (delta: 203.4 MB). Free memory was 359.5 MB in the beginning and 436.6 MB in the end (delta: -77.1 MB). Peak memory consumption was 126.3 MB. Max. memory is 5.3 GB. [2018-02-04 19:32:00,499 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 402.7 MB. Free memory is still 366.1 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-02-04 19:32:00,499 INFO L168 Benchmark]: CACSL2BoogieTranslator took 157.02 ms. Allocated memory is still 402.7 MB. Free memory was 359.5 MB in the beginning and 347.6 MB in the end (delta: 11.9 MB). Peak memory consumption was 11.9 MB. Max. memory is 5.3 GB. [2018-02-04 19:32:00,499 INFO L168 Benchmark]: Boogie Preprocessor took 20.74 ms. Allocated memory is still 402.7 MB. Free memory was 347.6 MB in the beginning and 345.0 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 5.3 GB. [2018-02-04 19:32:00,500 INFO L168 Benchmark]: RCFGBuilder took 125.30 ms. Allocated memory is still 402.7 MB. Free memory was 345.0 MB in the beginning and 331.0 MB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 5.3 GB. [2018-02-04 19:32:00,500 INFO L168 Benchmark]: TraceAbstraction took 1287.53 ms. Allocated memory was 402.7 MB in the beginning and 606.1 MB in the end (delta: 203.4 MB). Free memory was 331.0 MB in the beginning and 436.6 MB in the end (delta: -105.6 MB). Peak memory consumption was 97.8 MB. Max. memory is 5.3 GB. [2018-02-04 19:32:00,500 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 402.7 MB. Free memory is still 366.1 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 157.02 ms. Allocated memory is still 402.7 MB. Free memory was 359.5 MB in the beginning and 347.6 MB in the end (delta: 11.9 MB). Peak memory consumption was 11.9 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 20.74 ms. Allocated memory is still 402.7 MB. Free memory was 347.6 MB in the beginning and 345.0 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 5.3 GB. * RCFGBuilder took 125.30 ms. Allocated memory is still 402.7 MB. Free memory was 345.0 MB in the beginning and 331.0 MB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 5.3 GB. * TraceAbstraction took 1287.53 ms. Allocated memory was 402.7 MB in the beginning and 606.1 MB in the end (delta: 203.4 MB). Free memory was 331.0 MB in the beginning and 436.6 MB in the end (delta: -105.6 MB). Peak memory consumption was 97.8 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 1442]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - 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 - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 29 locations, 3 error locations. SAFE Result, 1.2s OverallTime, 8 OverallIterations, 1 TraceHistogramMax, 0.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 171 SDtfs, 29 SDslu, 745 SDs, 0 SdLazy, 342 SolverSat, 9 SolverUnsat, 8 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 75 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34occurred 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, 8 MinimizatonAttempts, 16 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 185 NumberOfCodeBlocks, 185 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 154 ConstructedInterpolants, 3 QuantifiedInterpolants, 10166 SizeOfPredicates, 3 NumberOfNonLiveVariables, 84 ConjunctsInSsa, 25 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_test3_true-valid-memsafety_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_SmtInterpol_NoArray.epf_AutomizerC.xml/Csv-Benchmark-0-2018-02-04_19-32-00-504.csv Written .csv to /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/memleaks_test3_true-valid-memsafety_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_SmtInterpol_NoArray.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-02-04_19-32-00-504.csv Received shutdown request...