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_Camel.epf -i ../../../trunk/examples/svcomp/ldv-memsafety/memleaks_test3_true-valid-memsafety_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-a74eeac-m [2018-02-02 19:29:19,771 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-02-02 19:29:19,773 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-02-02 19:29:19,783 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-02-02 19:29:19,784 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-02-02 19:29:19,784 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-02-02 19:29:19,785 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-02-02 19:29:19,786 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-02-02 19:29:19,787 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-02-02 19:29:19,788 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-02-02 19:29:19,789 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-02-02 19:29:19,789 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-02-02 19:29:19,790 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-02-02 19:29:19,791 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-02-02 19:29:19,791 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-02-02 19:29:19,793 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-02-02 19:29:19,794 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-02-02 19:29:19,796 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-02-02 19:29:19,797 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-02-02 19:29:19,797 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-02-02 19:29:19,799 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-02-02 19:29:19,803 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-02-02 19:29:19,803 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-02-02 19:29:19,803 INFO L98 SettingsManager]: Beginning loading settings from /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/cade18-smtinterpol/svcomp-DerefFreeMemtrack-32bit-Automizer_Camel.epf [2018-02-02 19:29:19,813 INFO L110 SettingsManager]: Loading preferences was successful [2018-02-02 19:29:19,813 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-02-02 19:29:19,814 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-02-02 19:29:19,814 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-02-02 19:29:19,814 INFO L133 SettingsManager]: * Use SBE=true [2018-02-02 19:29:19,815 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-02-02 19:29:19,815 INFO L133 SettingsManager]: * sizeof long=4 [2018-02-02 19:29:19,815 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-02-02 19:29:19,815 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-02-02 19:29:19,815 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-02-02 19:29:19,816 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-02-02 19:29:19,816 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-02-02 19:29:19,816 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-02-02 19:29:19,816 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-02-02 19:29:19,816 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-02-02 19:29:19,816 INFO L133 SettingsManager]: * sizeof long double=12 [2018-02-02 19:29:19,817 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-02-02 19:29:19,817 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-02-02 19:29:19,817 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-02-02 19:29:19,817 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-02-02 19:29:19,817 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-02-02 19:29:19,817 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-02-02 19:29:19,817 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-02-02 19:29:19,818 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-02-02 19:29:19,818 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-02-02 19:29:19,846 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-02-02 19:29:19,855 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-02-02 19:29:19,858 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-02-02 19:29:19,859 INFO L271 PluginConnector]: Initializing CDTParser... [2018-02-02 19:29:19,860 INFO L276 PluginConnector]: CDTParser initialized [2018-02-02 19:29:19,860 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-memsafety/memleaks_test3_true-valid-memsafety_true-termination.i [2018-02-02 19:29:19,983 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-02-02 19:29:19,985 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-02-02 19:29:19,985 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-02-02 19:29:19,986 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-02-02 19:29:19,992 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-02-02 19:29:19,993 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.02 07:29:19" (1/1) ... [2018-02-02 19:29:19,995 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5fc89e21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 07:29:19, skipping insertion in model container [2018-02-02 19:29:19,996 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.02 07:29:19" (1/1) ... [2018-02-02 19:29:20,010 INFO L153 Dispatcher]: Using SV-COMP mode [2018-02-02 19:29:20,047 INFO L153 Dispatcher]: Using SV-COMP mode [2018-02-02 19:29:20,130 INFO L450 PostProcessor]: Settings: Checked method=main [2018-02-02 19:29:20,139 INFO L450 PostProcessor]: Settings: Checked method=main [2018-02-02 19:29:20,142 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 07:29:20 WrapperNode [2018-02-02 19:29:20,143 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-02-02 19:29:20,143 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-02-02 19:29:20,143 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-02-02 19:29:20,143 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-02-02 19:29:20,151 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 07:29:20" (1/1) ... [2018-02-02 19:29:20,152 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 07:29:20" (1/1) ... [2018-02-02 19:29:20,159 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 07:29:20" (1/1) ... [2018-02-02 19:29:20,160 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 07:29:20" (1/1) ... [2018-02-02 19:29:20,162 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 07:29:20" (1/1) ... [2018-02-02 19:29:20,163 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 07:29:20" (1/1) ... [2018-02-02 19:29:20,164 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 07:29:20" (1/1) ... [2018-02-02 19:29:20,165 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-02-02 19:29:20,166 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-02-02 19:29:20,166 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-02-02 19:29:20,166 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-02-02 19:29:20,167 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 07:29:20" (1/1) ... No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-02-02 19:29:20,200 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-02-02 19:29:20,201 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-02-02 19:29:20,201 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2018-02-02 19:29:20,201 INFO L136 BoogieDeclarations]: Found implementation of procedure h_safe [2018-02-02 19:29:20,201 INFO L136 BoogieDeclarations]: Found implementation of procedure entry_point [2018-02-02 19:29:20,201 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-02-02 19:29:20,201 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-02-02 19:29:20,201 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-02-02 19:29:20,201 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-02-02 19:29:20,201 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-02-02 19:29:20,201 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-02-02 19:29:20,201 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-02-02 19:29:20,202 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_malloc [2018-02-02 19:29:20,202 INFO L128 BoogieDeclarations]: Found specification of procedure h_safe [2018-02-02 19:29:20,202 INFO L128 BoogieDeclarations]: Found specification of procedure entry_point [2018-02-02 19:29:20,202 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-02-02 19:29:20,202 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-02-02 19:29:20,202 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-02-02 19:29:20,296 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-02-02 19:29:20,297 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.02 07:29:20 BoogieIcfgContainer [2018-02-02 19:29:20,297 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-02-02 19:29:20,297 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-02-02 19:29:20,298 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-02-02 19:29:20,300 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-02-02 19:29:20,300 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.02 07:29:19" (1/3) ... [2018-02-02 19:29:20,301 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11a3886e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.02 07:29:20, skipping insertion in model container [2018-02-02 19:29:20,301 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 07:29:20" (2/3) ... [2018-02-02 19:29:20,301 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11a3886e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.02 07:29:20, skipping insertion in model container [2018-02-02 19:29:20,301 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.02 07:29:20" (3/3) ... [2018-02-02 19:29:20,302 INFO L107 eAbstractionObserver]: Analyzing ICFG memleaks_test3_true-valid-memsafety_true-termination.i [2018-02-02 19:29:20,308 INFO L128 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-02-02 19:29:20,312 INFO L140 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2018-02-02 19:29:20,344 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-02-02 19:29:20,344 INFO L323 AbstractCegarLoop]: Hoare is false [2018-02-02 19:29:20,344 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-02-02 19:29:20,344 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-02-02 19:29:20,345 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-02-02 19:29:20,345 INFO L327 AbstractCegarLoop]: Difference is false [2018-02-02 19:29:20,345 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-02-02 19:29:20,345 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-02-02 19:29:20,346 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-02-02 19:29:20,357 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2018-02-02 19:29:20,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-02-02 19:29:20,365 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 19:29:20,366 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 19:29:20,366 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr0EnsuresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation]=== [2018-02-02 19:29:20,369 INFO L82 PathProgramCache]: Analyzing trace with hash -36513995, now seen corresponding path program 1 times [2018-02-02 19:29:20,371 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 19:29:20,371 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 19:29:20,406 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 19:29:20,406 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 19:29:20,407 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 19:29:20,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 19:29:20,449 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 19:29:20,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 19:29:20,544 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 19:29:20,545 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-02-02 19:29:20,546 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-02-02 19:29:20,553 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-02-02 19:29:20,554 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-02-02 19:29:20,555 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 7 states. [2018-02-02 19:29:20,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 19:29:20,608 INFO L93 Difference]: Finished difference Result 38 states and 40 transitions. [2018-02-02 19:29:20,609 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-02-02 19:29:20,651 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2018-02-02 19:29:20,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 19:29:20,660 INFO L225 Difference]: With dead ends: 38 [2018-02-02 19:29:20,660 INFO L226 Difference]: Without dead ends: 35 [2018-02-02 19:29:20,661 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 [2018-02-02 19:29:20,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-02-02 19:29:20,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 34. [2018-02-02 19:29:20,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-02-02 19:29:20,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 37 transitions. [2018-02-02 19:29:20,683 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 37 transitions. Word has length 18 [2018-02-02 19:29:20,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 19:29:20,683 INFO L432 AbstractCegarLoop]: Abstraction has 34 states and 37 transitions. [2018-02-02 19:29:20,683 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-02-02 19:29:20,683 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 37 transitions. [2018-02-02 19:29:20,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-02-02 19:29:20,684 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 19:29:20,684 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 19:29:20,684 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr0EnsuresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation]=== [2018-02-02 19:29:20,684 INFO L82 PathProgramCache]: Analyzing trace with hash -36513994, now seen corresponding path program 1 times [2018-02-02 19:29:20,684 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 19:29:20,684 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 19:29:20,685 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 19:29:20,685 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 19:29:20,685 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 19:29:20,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 19:29:20,696 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 19:29:20,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 19:29:20,759 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 19:29:20,760 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-02-02 19:29:20,761 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-02-02 19:29:20,761 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-02-02 19:29:20,761 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-02-02 19:29:20,762 INFO L87 Difference]: Start difference. First operand 34 states and 37 transitions. Second operand 7 states. [2018-02-02 19:29:20,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 19:29:20,800 INFO L93 Difference]: Finished difference Result 36 states and 38 transitions. [2018-02-02 19:29:20,800 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-02-02 19:29:20,800 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2018-02-02 19:29:20,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 19:29:20,803 INFO L225 Difference]: With dead ends: 36 [2018-02-02 19:29:20,803 INFO L226 Difference]: Without dead ends: 36 [2018-02-02 19:29:20,803 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 [2018-02-02 19:29:20,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-02-02 19:29:20,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 34. [2018-02-02 19:29:20,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-02-02 19:29:20,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 36 transitions. [2018-02-02 19:29:20,807 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 36 transitions. Word has length 18 [2018-02-02 19:29:20,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 19:29:20,808 INFO L432 AbstractCegarLoop]: Abstraction has 34 states and 36 transitions. [2018-02-02 19:29:20,808 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-02-02 19:29:20,808 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 36 transitions. [2018-02-02 19:29:20,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-02-02 19:29:20,809 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 19:29:20,809 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] [2018-02-02 19:29:20,809 INFO L371 AbstractCegarLoop]: === Iteration 3 === [mainErr0EnsuresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation]=== [2018-02-02 19:29:20,809 INFO L82 PathProgramCache]: Analyzing trace with hash 133826739, now seen corresponding path program 1 times [2018-02-02 19:29:20,809 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 19:29:20,809 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 19:29:20,810 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 19:29:20,811 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 19:29:20,811 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 19:29:20,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 19:29:20,825 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 19:29:20,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 19:29:20,881 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 19:29:20,881 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-02-02 19:29:20,882 INFO L409 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-02-02 19:29:20,882 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-02-02 19:29:20,882 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-02-02 19:29:20,882 INFO L87 Difference]: Start difference. First operand 34 states and 36 transitions. Second operand 8 states. [2018-02-02 19:29:20,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 19:29:20,924 INFO L93 Difference]: Finished difference Result 33 states and 35 transitions. [2018-02-02 19:29:20,925 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-02-02 19:29:20,925 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 20 [2018-02-02 19:29:20,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 19:29:20,925 INFO L225 Difference]: With dead ends: 33 [2018-02-02 19:29:20,925 INFO L226 Difference]: Without dead ends: 33 [2018-02-02 19:29:20,926 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 [2018-02-02 19:29:20,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-02-02 19:29:20,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-02-02 19:29:20,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-02-02 19:29:20,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2018-02-02 19:29:20,930 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 20 [2018-02-02 19:29:20,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 19:29:20,931 INFO L432 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2018-02-02 19:29:20,931 INFO L433 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-02-02 19:29:20,931 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2018-02-02 19:29:20,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-02-02 19:29:20,931 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 19:29:20,932 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] [2018-02-02 19:29:20,932 INFO L371 AbstractCegarLoop]: === Iteration 4 === [mainErr0EnsuresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation]=== [2018-02-02 19:29:20,932 INFO L82 PathProgramCache]: Analyzing trace with hash 133826740, now seen corresponding path program 1 times [2018-02-02 19:29:20,932 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 19:29:20,932 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 19:29:20,933 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 19:29:20,933 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 19:29:20,933 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 19:29:20,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 19:29:20,945 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 19:29:20,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 19:29:20,998 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 19:29:20,998 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-02-02 19:29:20,998 INFO L409 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-02-02 19:29:20,999 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-02-02 19:29:20,999 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-02-02 19:29:20,999 INFO L87 Difference]: Start difference. First operand 33 states and 35 transitions. Second operand 8 states. [2018-02-02 19:29:21,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 19:29:21,075 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2018-02-02 19:29:21,075 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-02-02 19:29:21,075 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 20 [2018-02-02 19:29:21,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 19:29:21,075 INFO L225 Difference]: With dead ends: 34 [2018-02-02 19:29:21,075 INFO L226 Difference]: Without dead ends: 34 [2018-02-02 19:29:21,076 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 [2018-02-02 19:29:21,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-02-02 19:29:21,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 24. [2018-02-02 19:29:21,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-02-02 19:29:21,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2018-02-02 19:29:21,077 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 20 [2018-02-02 19:29:21,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 19:29:21,078 INFO L432 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2018-02-02 19:29:21,078 INFO L433 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-02-02 19:29:21,078 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2018-02-02 19:29:21,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-02-02 19:29:21,078 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 19:29:21,078 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] [2018-02-02 19:29:21,078 INFO L371 AbstractCegarLoop]: === Iteration 5 === [mainErr0EnsuresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation]=== [2018-02-02 19:29:21,079 INFO L82 PathProgramCache]: Analyzing trace with hash -730055936, now seen corresponding path program 1 times [2018-02-02 19:29:21,079 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 19:29:21,079 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 19:29:21,079 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 19:29:21,079 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 19:29:21,080 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 19:29:21,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 19:29:21,085 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 19:29:21,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 19:29:21,105 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 19:29:21,105 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-02-02 19:29:21,105 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-02-02 19:29:21,106 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-02-02 19:29:21,106 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-02-02 19:29:21,106 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand 3 states. [2018-02-02 19:29:21,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 19:29:21,124 INFO L93 Difference]: Finished difference Result 35 states and 36 transitions. [2018-02-02 19:29:21,124 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-02-02 19:29:21,124 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2018-02-02 19:29:21,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 19:29:21,125 INFO L225 Difference]: With dead ends: 35 [2018-02-02 19:29:21,125 INFO L226 Difference]: Without dead ends: 32 [2018-02-02 19:29:21,125 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 [2018-02-02 19:29:21,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-02-02 19:29:21,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2018-02-02 19:29:21,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-02-02 19:29:21,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2018-02-02 19:29:21,128 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 20 [2018-02-02 19:29:21,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 19:29:21,128 INFO L432 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2018-02-02 19:29:21,128 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-02-02 19:29:21,129 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2018-02-02 19:29:21,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-02-02 19:29:21,129 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 19:29:21,129 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] [2018-02-02 19:29:21,129 INFO L371 AbstractCegarLoop]: === Iteration 6 === [mainErr0EnsuresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation]=== [2018-02-02 19:29:21,130 INFO L82 PathProgramCache]: Analyzing trace with hash -1161698987, now seen corresponding path program 1 times [2018-02-02 19:29:21,130 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 19:29:21,130 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 19:29:21,131 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 19:29:21,131 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 19:29:21,131 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 19:29:21,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 19:29:21,138 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 19:29:21,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 19:29:21,207 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 19:29:21,207 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-02-02 19:29:21,207 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-02-02 19:29:21,207 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-02-02 19:29:21,208 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-02-02 19:29:21,208 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand 7 states. [2018-02-02 19:29:21,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 19:29:21,224 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2018-02-02 19:29:21,225 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-02-02 19:29:21,225 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2018-02-02 19:29:21,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 19:29:21,226 INFO L225 Difference]: With dead ends: 33 [2018-02-02 19:29:21,226 INFO L226 Difference]: Without dead ends: 26 [2018-02-02 19:29:21,226 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 [2018-02-02 19:29:21,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-02-02 19:29:21,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2018-02-02 19:29:21,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-02-02 19:29:21,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2018-02-02 19:29:21,228 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 21 [2018-02-02 19:29:21,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 19:29:21,229 INFO L432 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2018-02-02 19:29:21,229 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-02-02 19:29:21,229 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2018-02-02 19:29:21,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-02-02 19:29:21,230 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 19:29:21,230 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] [2018-02-02 19:29:21,230 INFO L371 AbstractCegarLoop]: === Iteration 7 === [mainErr0EnsuresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation]=== [2018-02-02 19:29:21,230 INFO L82 PathProgramCache]: Analyzing trace with hash -241367810, now seen corresponding path program 1 times [2018-02-02 19:29:21,230 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 19:29:21,230 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 19:29:21,231 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 19:29:21,232 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 19:29:21,232 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 19:29:21,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 19:29:21,239 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 19:29:21,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 19:29:21,283 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 19:29:21,283 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-02-02 19:29:21,284 INFO L409 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-02-02 19:29:21,284 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-02-02 19:29:21,284 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-02-02 19:29:21,284 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand 8 states. [2018-02-02 19:29:21,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 19:29:21,309 INFO L93 Difference]: Finished difference Result 24 states and 23 transitions. [2018-02-02 19:29:21,309 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-02-02 19:29:21,309 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 22 [2018-02-02 19:29:21,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 19:29:21,310 INFO L225 Difference]: With dead ends: 24 [2018-02-02 19:29:21,310 INFO L226 Difference]: Without dead ends: 24 [2018-02-02 19:29:21,310 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 [2018-02-02 19:29:21,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-02-02 19:29:21,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2018-02-02 19:29:21,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-02-02 19:29:21,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 23 transitions. [2018-02-02 19:29:21,311 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 23 transitions. Word has length 22 [2018-02-02 19:29:21,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 19:29:21,312 INFO L432 AbstractCegarLoop]: Abstraction has 24 states and 23 transitions. [2018-02-02 19:29:21,312 INFO L433 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-02-02 19:29:21,312 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 23 transitions. [2018-02-02 19:29:21,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-02-02 19:29:21,312 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 19:29:21,312 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] [2018-02-02 19:29:21,312 INFO L371 AbstractCegarLoop]: === Iteration 8 === [mainErr0EnsuresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation]=== [2018-02-02 19:29:21,312 INFO L82 PathProgramCache]: Analyzing trace with hash 1102731031, now seen corresponding path program 1 times [2018-02-02 19:29:21,312 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 19:29:21,312 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 19:29:21,313 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 19:29:21,313 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 19:29:21,314 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 19:29:21,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 19:29:21,331 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 19:29:21,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 19:29:21,449 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 19:29:21,449 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-02-02 19:29:21,449 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-02-02 19:29:21,449 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-02-02 19:29:21,449 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-02-02 19:29:21,450 INFO L87 Difference]: Start difference. First operand 24 states and 23 transitions. Second operand 9 states. [2018-02-02 19:29:21,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 19:29:21,563 INFO L93 Difference]: Finished difference Result 23 states and 22 transitions. [2018-02-02 19:29:21,565 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-02-02 19:29:21,565 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 23 [2018-02-02 19:29:21,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 19:29:21,565 INFO L225 Difference]: With dead ends: 23 [2018-02-02 19:29:21,565 INFO L226 Difference]: Without dead ends: 0 [2018-02-02 19:29:21,566 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2018-02-02 19:29:21,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-02-02 19:29:21,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-02-02 19:29:21,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-02-02 19:29:21,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-02-02 19:29:21,566 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 23 [2018-02-02 19:29:21,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 19:29:21,566 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-02-02 19:29:21,566 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-02-02 19:29:21,566 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-02-02 19:29:21,566 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-02-02 19:29:21,570 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.02 07:29:21 BoogieIcfgContainer [2018-02-02 19:29:21,570 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-02-02 19:29:21,570 INFO L168 Benchmark]: Toolchain (without parser) took 1586.60 ms. Allocated memory was 403.2 MB in the beginning and 611.3 MB in the end (delta: 208.1 MB). Free memory was 360.1 MB in the beginning and 441.6 MB in the end (delta: -81.6 MB). Peak memory consumption was 126.6 MB. Max. memory is 5.3 GB. [2018-02-02 19:29:21,571 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 403.2 MB. Free memory is still 366.7 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-02-02 19:29:21,571 INFO L168 Benchmark]: CACSL2BoogieTranslator took 157.49 ms. Allocated memory is still 403.2 MB. Free memory was 360.1 MB in the beginning and 346.8 MB in the end (delta: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 5.3 GB. [2018-02-02 19:29:21,572 INFO L168 Benchmark]: Boogie Preprocessor took 22.47 ms. Allocated memory is still 403.2 MB. Free memory was 346.8 MB in the beginning and 345.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 5.3 GB. [2018-02-02 19:29:21,572 INFO L168 Benchmark]: RCFGBuilder took 131.31 ms. Allocated memory is still 403.2 MB. Free memory was 345.5 MB in the beginning and 331.5 MB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 5.3 GB. [2018-02-02 19:29:21,572 INFO L168 Benchmark]: TraceAbstraction took 1272.46 ms. Allocated memory was 403.2 MB in the beginning and 611.3 MB in the end (delta: 208.1 MB). Free memory was 331.5 MB in the beginning and 441.6 MB in the end (delta: -110.2 MB). Peak memory consumption was 98.0 MB. Max. memory is 5.3 GB. [2018-02-02 19:29:21,573 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 403.2 MB. Free memory is still 366.7 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 157.49 ms. Allocated memory is still 403.2 MB. Free memory was 360.1 MB in the beginning and 346.8 MB in the end (delta: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 22.47 ms. Allocated memory is still 403.2 MB. Free memory was 346.8 MB in the beginning and 345.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 5.3 GB. * RCFGBuilder took 131.31 ms. Allocated memory is still 403.2 MB. Free memory was 345.5 MB in the beginning and 331.5 MB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 5.3 GB. * TraceAbstraction took 1272.46 ms. Allocated memory was 403.2 MB in the beginning and 611.3 MB in the end (delta: 208.1 MB). Free memory was 331.5 MB in the beginning and 441.6 MB in the end (delta: -110.2 MB). Peak memory consumption was 98.0 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, 28 SDslu, 739 SDs, 0 SdLazy, 334 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 67 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s 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, 162 NumberOfCodeBlocks, 162 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 154 ConstructedInterpolants, 0 QuantifiedInterpolants, 10716 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 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_Camel.epf_AutomizerC.xml/Csv-Benchmark-0-2018-02-02_19-29-21-578.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_Camel.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-02-02_19-29-21-578.csv Received shutdown request...