java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem19_label57_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 21:06:47,817 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 21:06:47,822 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 21:06:47,840 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 21:06:47,841 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 21:06:47,842 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 21:06:47,843 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 21:06:47,845 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 21:06:47,847 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 21:06:47,848 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 21:06:47,849 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 21:06:47,849 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 21:06:47,850 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 21:06:47,851 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 21:06:47,852 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 21:06:47,853 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 21:06:47,854 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 21:06:47,856 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 21:06:47,858 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 21:06:47,860 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 21:06:47,862 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 21:06:47,864 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 21:06:47,868 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-23 21:06:47,886 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-10-23 21:06:47,916 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 21:06:47,917 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 21:06:47,918 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 21:06:47,918 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-23 21:06:47,918 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-23 21:06:47,919 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-23 21:06:47,919 INFO L133 SettingsManager]: * Use SBE=true [2018-10-23 21:06:47,919 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 21:06:47,919 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 21:06:47,919 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 21:06:47,919 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 21:06:47,921 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 21:06:47,921 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 21:06:47,921 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 21:06:47,921 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 21:06:47,921 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 21:06:47,922 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 21:06:47,922 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 21:06:47,922 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 21:06:47,922 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 21:06:47,922 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 21:06:47,922 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 21:06:47,923 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 21:06:47,924 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-23 21:06:47,924 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 21:06:47,924 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 21:06:47,924 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 21:06:47,925 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 21:06:47,984 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 21:06:47,998 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 21:06:48,003 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 21:06:48,005 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 21:06:48,005 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 21:06:48,006 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label57_true-unreach-call.c [2018-10-23 21:06:48,072 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/210680acc/18064bfd3f9f49cfaa9c28098180418d/FLAG50159d5d6 [2018-10-23 21:06:48,998 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 21:06:48,999 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label57_true-unreach-call.c [2018-10-23 21:06:49,047 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/210680acc/18064bfd3f9f49cfaa9c28098180418d/FLAG50159d5d6 [2018-10-23 21:06:49,066 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/210680acc/18064bfd3f9f49cfaa9c28098180418d [2018-10-23 21:06:49,080 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 21:06:49,082 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 21:06:49,083 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 21:06:49,084 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 21:06:49,089 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 21:06:49,091 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 09:06:49" (1/1) ... [2018-10-23 21:06:49,094 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10e73541 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:06:49, skipping insertion in model container [2018-10-23 21:06:49,094 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 09:06:49" (1/1) ... [2018-10-23 21:06:49,106 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 21:06:49,353 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 21:06:51,358 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 21:06:51,363 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 21:06:52,358 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 21:06:52,416 INFO L193 MainTranslator]: Completed translation [2018-10-23 21:06:52,417 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:06:52 WrapperNode [2018-10-23 21:06:52,417 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 21:06:52,418 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 21:06:52,418 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 21:06:52,418 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 21:06:52,428 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:06:52" (1/1) ... [2018-10-23 21:06:52,526 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:06:52" (1/1) ... [2018-10-23 21:06:53,654 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 21:06:53,654 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 21:06:53,654 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 21:06:53,655 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 21:06:53,666 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:06:52" (1/1) ... [2018-10-23 21:06:53,666 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:06:52" (1/1) ... [2018-10-23 21:06:53,750 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:06:52" (1/1) ... [2018-10-23 21:06:53,751 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:06:52" (1/1) ... [2018-10-23 21:06:54,110 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:06:52" (1/1) ... [2018-10-23 21:06:54,170 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:06:52" (1/1) ... [2018-10-23 21:06:54,330 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:06:52" (1/1) ... [2018-10-23 21:06:54,505 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 21:06:54,505 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 21:06:54,505 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 21:06:54,505 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 21:06:54,506 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:06:52" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-23 21:06:54,576 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-23 21:06:54,577 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 21:06:54,577 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 21:07:12,789 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 21:07:12,790 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 09:07:12 BoogieIcfgContainer [2018-10-23 21:07:12,790 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 21:07:12,792 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 21:07:12,792 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 21:07:12,795 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 21:07:12,796 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 09:06:49" (1/3) ... [2018-10-23 21:07:12,796 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b5e3ad2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 09:07:12, skipping insertion in model container [2018-10-23 21:07:12,797 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:06:52" (2/3) ... [2018-10-23 21:07:12,797 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b5e3ad2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 09:07:12, skipping insertion in model container [2018-10-23 21:07:12,797 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 09:07:12" (3/3) ... [2018-10-23 21:07:12,799 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label57_true-unreach-call.c [2018-10-23 21:07:12,810 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 21:07:12,820 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 21:07:12,838 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 21:07:12,889 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-23 21:07:12,890 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 21:07:12,890 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 21:07:12,890 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 21:07:12,891 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 21:07:12,891 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 21:07:12,891 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 21:07:12,891 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 21:07:12,891 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 21:07:12,944 INFO L276 IsEmpty]: Start isEmpty. Operand 1749 states. [2018-10-23 21:07:12,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-10-23 21:07:12,954 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 21:07:12,955 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 21:07:12,958 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 21:07:12,965 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 21:07:12,965 INFO L82 PathProgramCache]: Analyzing trace with hash 1848943538, now seen corresponding path program 1 times [2018-10-23 21:07:12,968 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 21:07:12,968 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 21:07:13,026 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:07:13,027 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 21:07:13,027 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:07:13,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 21:07:13,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 21:07:13,544 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 21:07:13,544 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 21:07:13,549 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 21:07:13,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 21:07:13,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 21:07:13,568 INFO L87 Difference]: Start difference. First operand 1749 states. Second operand 4 states. [2018-10-23 21:07:39,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 21:07:39,371 INFO L93 Difference]: Finished difference Result 6419 states and 12268 transitions. [2018-10-23 21:07:39,373 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 21:07:39,375 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 57 [2018-10-23 21:07:39,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 21:07:39,433 INFO L225 Difference]: With dead ends: 6419 [2018-10-23 21:07:39,433 INFO L226 Difference]: Without dead ends: 4663 [2018-10-23 21:07:39,446 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 21:07:39,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4663 states. [2018-10-23 21:07:39,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4663 to 4573. [2018-10-23 21:07:39,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4573 states. [2018-10-23 21:07:39,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4573 states to 4573 states and 7863 transitions. [2018-10-23 21:07:39,662 INFO L78 Accepts]: Start accepts. Automaton has 4573 states and 7863 transitions. Word has length 57 [2018-10-23 21:07:39,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 21:07:39,663 INFO L481 AbstractCegarLoop]: Abstraction has 4573 states and 7863 transitions. [2018-10-23 21:07:39,664 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 21:07:39,664 INFO L276 IsEmpty]: Start isEmpty. Operand 4573 states and 7863 transitions. [2018-10-23 21:07:39,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2018-10-23 21:07:39,673 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 21:07:39,674 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 21:07:39,674 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 21:07:39,675 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 21:07:39,675 INFO L82 PathProgramCache]: Analyzing trace with hash 412483048, now seen corresponding path program 1 times [2018-10-23 21:07:39,675 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 21:07:39,675 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 21:07:39,676 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:07:39,677 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 21:07:39,677 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:07:39,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 21:07:40,026 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 21:07:40,026 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 21:07:40,026 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 21:07:40,028 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 21:07:40,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 21:07:40,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 21:07:40,029 INFO L87 Difference]: Start difference. First operand 4573 states and 7863 transitions. Second operand 4 states. [2018-10-23 21:08:08,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 21:08:08,142 INFO L93 Difference]: Finished difference Result 17564 states and 30487 transitions. [2018-10-23 21:08:08,143 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 21:08:08,143 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 141 [2018-10-23 21:08:08,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 21:08:08,210 INFO L225 Difference]: With dead ends: 17564 [2018-10-23 21:08:08,210 INFO L226 Difference]: Without dead ends: 12993 [2018-10-23 21:08:08,220 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 21:08:08,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12993 states. [2018-10-23 21:08:08,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12993 to 8672. [2018-10-23 21:08:08,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8672 states. [2018-10-23 21:08:08,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8672 states to 8672 states and 14512 transitions. [2018-10-23 21:08:08,431 INFO L78 Accepts]: Start accepts. Automaton has 8672 states and 14512 transitions. Word has length 141 [2018-10-23 21:08:08,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 21:08:08,432 INFO L481 AbstractCegarLoop]: Abstraction has 8672 states and 14512 transitions. [2018-10-23 21:08:08,432 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 21:08:08,433 INFO L276 IsEmpty]: Start isEmpty. Operand 8672 states and 14512 transitions. [2018-10-23 21:08:08,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2018-10-23 21:08:08,439 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 21:08:08,440 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 21:08:08,440 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 21:08:08,441 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 21:08:08,441 INFO L82 PathProgramCache]: Analyzing trace with hash -331695523, now seen corresponding path program 1 times [2018-10-23 21:08:08,441 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 21:08:08,441 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 21:08:08,442 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:08:08,442 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 21:08:08,443 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:08:08,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 21:08:08,815 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 21:08:08,816 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 21:08:08,816 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 21:08:08,818 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 21:08:08,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 21:08:08,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 21:08:08,819 INFO L87 Difference]: Start difference. First operand 8672 states and 14512 transitions. Second operand 4 states. [2018-10-23 21:08:29,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 21:08:29,740 INFO L93 Difference]: Finished difference Result 34022 states and 57203 transitions. [2018-10-23 21:08:29,744 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 21:08:29,744 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 181 [2018-10-23 21:08:29,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 21:08:29,821 INFO L225 Difference]: With dead ends: 34022 [2018-10-23 21:08:29,822 INFO L226 Difference]: Without dead ends: 25352 [2018-10-23 21:08:29,836 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 21:08:29,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25352 states. [2018-10-23 21:08:30,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25352 to 25338. [2018-10-23 21:08:30,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25338 states. [2018-10-23 21:08:30,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25338 states to 25338 states and 36988 transitions. [2018-10-23 21:08:30,238 INFO L78 Accepts]: Start accepts. Automaton has 25338 states and 36988 transitions. Word has length 181 [2018-10-23 21:08:30,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 21:08:30,238 INFO L481 AbstractCegarLoop]: Abstraction has 25338 states and 36988 transitions. [2018-10-23 21:08:30,239 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 21:08:30,239 INFO L276 IsEmpty]: Start isEmpty. Operand 25338 states and 36988 transitions. [2018-10-23 21:08:30,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2018-10-23 21:08:30,244 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 21:08:30,244 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 21:08:30,244 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 21:08:30,245 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 21:08:30,245 INFO L82 PathProgramCache]: Analyzing trace with hash 852496620, now seen corresponding path program 1 times [2018-10-23 21:08:30,245 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 21:08:30,245 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 21:08:30,246 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:08:30,246 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 21:08:30,246 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:08:30,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 21:08:30,775 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 221 proven. 0 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2018-10-23 21:08:30,776 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 21:08:30,776 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 21:08:30,777 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 21:08:30,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 21:08:30,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 21:08:30,777 INFO L87 Difference]: Start difference. First operand 25338 states and 36988 transitions. Second operand 4 states. [2018-10-23 21:08:50,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 21:08:50,252 INFO L93 Difference]: Finished difference Result 93031 states and 135352 transitions. [2018-10-23 21:08:50,253 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 21:08:50,253 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 365 [2018-10-23 21:08:50,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 21:08:50,346 INFO L225 Difference]: With dead ends: 93031 [2018-10-23 21:08:50,346 INFO L226 Difference]: Without dead ends: 67695 [2018-10-23 21:08:50,392 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 21:08:50,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67695 states. [2018-10-23 21:08:51,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67695 to 64956. [2018-10-23 21:08:51,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64956 states. [2018-10-23 21:08:51,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64956 states to 64956 states and 86129 transitions. [2018-10-23 21:08:51,682 INFO L78 Accepts]: Start accepts. Automaton has 64956 states and 86129 transitions. Word has length 365 [2018-10-23 21:08:51,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 21:08:51,682 INFO L481 AbstractCegarLoop]: Abstraction has 64956 states and 86129 transitions. [2018-10-23 21:08:51,683 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 21:08:51,683 INFO L276 IsEmpty]: Start isEmpty. Operand 64956 states and 86129 transitions. [2018-10-23 21:08:51,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 467 [2018-10-23 21:08:51,696 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 21:08:51,697 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 21:08:51,697 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 21:08:51,697 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 21:08:51,698 INFO L82 PathProgramCache]: Analyzing trace with hash -1935862081, now seen corresponding path program 1 times [2018-10-23 21:08:51,698 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 21:08:51,698 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 21:08:51,701 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:08:51,702 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 21:08:51,702 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:08:51,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 21:08:52,341 INFO L134 CoverageAnalysis]: Checked inductivity of 426 backedges. 230 proven. 0 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2018-10-23 21:08:52,341 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 21:08:52,341 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 21:08:52,342 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 21:08:52,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 21:08:52,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 21:08:52,343 INFO L87 Difference]: Start difference. First operand 64956 states and 86129 transitions. Second operand 4 states. [2018-10-23 21:09:12,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 21:09:12,155 INFO L93 Difference]: Finished difference Result 235259 states and 309486 transitions. [2018-10-23 21:09:12,155 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 21:09:12,155 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 466 [2018-10-23 21:09:12,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 21:09:12,367 INFO L225 Difference]: With dead ends: 235259 [2018-10-23 21:09:12,368 INFO L226 Difference]: Without dead ends: 170305 [2018-10-23 21:09:12,447 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 21:09:12,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170305 states. [2018-10-23 21:09:14,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170305 to 168873. [2018-10-23 21:09:14,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168873 states. [2018-10-23 21:09:15,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168873 states to 168873 states and 202433 transitions. [2018-10-23 21:09:15,042 INFO L78 Accepts]: Start accepts. Automaton has 168873 states and 202433 transitions. Word has length 466 [2018-10-23 21:09:15,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 21:09:15,043 INFO L481 AbstractCegarLoop]: Abstraction has 168873 states and 202433 transitions. [2018-10-23 21:09:15,043 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 21:09:15,043 INFO L276 IsEmpty]: Start isEmpty. Operand 168873 states and 202433 transitions. [2018-10-23 21:09:15,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1020 [2018-10-23 21:09:15,093 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 21:09:15,094 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 21:09:15,095 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 21:09:15,095 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 21:09:15,095 INFO L82 PathProgramCache]: Analyzing trace with hash 121612443, now seen corresponding path program 1 times [2018-10-23 21:09:15,096 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 21:09:15,096 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 21:09:15,097 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:09:15,097 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 21:09:15,097 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:09:15,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 21:09:15,655 WARN L179 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-10-23 21:09:16,184 WARN L179 SmtUtils]: Spent 479.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 18 [2018-10-23 21:09:16,642 WARN L179 SmtUtils]: Spent 378.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 18 [2018-10-23 21:09:18,365 INFO L134 CoverageAnalysis]: Checked inductivity of 766 backedges. 396 proven. 0 refuted. 0 times theorem prover too weak. 370 trivial. 0 not checked. [2018-10-23 21:09:18,365 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 21:09:18,366 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-23 21:09:18,367 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-23 21:09:18,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-23 21:09:18,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-23 21:09:18,368 INFO L87 Difference]: Start difference. First operand 168873 states and 202433 transitions. Second operand 7 states. [2018-10-23 21:09:58,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 21:09:58,157 INFO L93 Difference]: Finished difference Result 377375 states and 447271 transitions. [2018-10-23 21:09:58,157 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 21:09:58,157 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1019 [2018-10-23 21:09:58,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 21:09:58,388 INFO L225 Difference]: With dead ends: 377375 [2018-10-23 21:09:58,389 INFO L226 Difference]: Without dead ends: 209870 [2018-10-23 21:09:58,459 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2018-10-23 21:09:58,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209870 states. [2018-10-23 21:10:01,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209870 to 205764. [2018-10-23 21:10:01,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205764 states. [2018-10-23 21:10:01,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205764 states to 205764 states and 240850 transitions. [2018-10-23 21:10:01,349 INFO L78 Accepts]: Start accepts. Automaton has 205764 states and 240850 transitions. Word has length 1019 [2018-10-23 21:10:01,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 21:10:01,350 INFO L481 AbstractCegarLoop]: Abstraction has 205764 states and 240850 transitions. [2018-10-23 21:10:01,350 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-23 21:10:01,350 INFO L276 IsEmpty]: Start isEmpty. Operand 205764 states and 240850 transitions. [2018-10-23 21:10:01,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1039 [2018-10-23 21:10:01,396 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 21:10:01,397 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 21:10:01,397 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 21:10:01,397 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 21:10:01,398 INFO L82 PathProgramCache]: Analyzing trace with hash -1001764960, now seen corresponding path program 1 times [2018-10-23 21:10:01,398 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 21:10:01,398 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 21:10:01,399 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:10:01,399 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 21:10:01,399 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:10:01,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 21:10:03,471 INFO L134 CoverageAnalysis]: Checked inductivity of 977 backedges. 505 proven. 0 refuted. 0 times theorem prover too weak. 472 trivial. 0 not checked. [2018-10-23 21:10:03,471 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 21:10:03,471 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 21:10:03,472 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 21:10:03,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 21:10:03,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 21:10:03,473 INFO L87 Difference]: Start difference. First operand 205764 states and 240850 transitions. Second operand 4 states. [2018-10-23 21:10:18,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 21:10:18,678 INFO L93 Difference]: Finished difference Result 475730 states and 560060 transitions. [2018-10-23 21:10:18,678 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 21:10:18,679 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1038 [2018-10-23 21:10:18,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 21:10:18,973 INFO L225 Difference]: With dead ends: 475730 [2018-10-23 21:10:18,973 INFO L226 Difference]: Without dead ends: 267229 [2018-10-23 21:10:19,089 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 21:10:19,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267229 states. [2018-10-23 21:10:23,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267229 to 265852. [2018-10-23 21:10:23,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 265852 states. [2018-10-23 21:10:23,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265852 states to 265852 states and 296554 transitions. [2018-10-23 21:10:23,378 INFO L78 Accepts]: Start accepts. Automaton has 265852 states and 296554 transitions. Word has length 1038 [2018-10-23 21:10:23,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 21:10:23,379 INFO L481 AbstractCegarLoop]: Abstraction has 265852 states and 296554 transitions. [2018-10-23 21:10:23,379 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 21:10:23,379 INFO L276 IsEmpty]: Start isEmpty. Operand 265852 states and 296554 transitions. [2018-10-23 21:10:23,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1101 [2018-10-23 21:10:23,401 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 21:10:23,402 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 21:10:23,402 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 21:10:23,402 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 21:10:23,403 INFO L82 PathProgramCache]: Analyzing trace with hash 18831720, now seen corresponding path program 1 times [2018-10-23 21:10:23,403 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 21:10:23,403 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 21:10:23,404 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:10:23,404 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 21:10:23,404 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:10:23,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 21:10:25,121 INFO L134 CoverageAnalysis]: Checked inductivity of 1135 backedges. 774 proven. 0 refuted. 0 times theorem prover too weak. 361 trivial. 0 not checked. [2018-10-23 21:10:25,122 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 21:10:25,122 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 21:10:25,123 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 21:10:25,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 21:10:25,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 21:10:25,124 INFO L87 Difference]: Start difference. First operand 265852 states and 296554 transitions. Second operand 4 states. Received shutdown request... [2018-10-23 21:10:40,585 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 21:10:40,585 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-23 21:10:40,590 WARN L205 ceAbstractionStarter]: Timeout [2018-10-23 21:10:40,591 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 09:10:40 BoogieIcfgContainer [2018-10-23 21:10:40,591 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 21:10:40,592 INFO L168 Benchmark]: Toolchain (without parser) took 231510.95 ms. Allocated memory was 1.5 GB in the beginning and 4.5 GB in the end (delta: 2.9 GB). Free memory was 1.4 GB in the beginning and 3.6 GB in the end (delta: -2.2 GB). Peak memory consumption was 770.7 MB. Max. memory is 7.1 GB. [2018-10-23 21:10:40,593 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-23 21:10:40,593 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3334.01 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 392.7 MB). Peak memory consumption was 392.7 MB. Max. memory is 7.1 GB. [2018-10-23 21:10:40,594 INFO L168 Benchmark]: Boogie Procedure Inliner took 1236.10 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 869.3 MB). Free memory was 1.0 GB in the beginning and 2.2 GB in the end (delta: -1.1 GB). Peak memory consumption was 117.1 MB. Max. memory is 7.1 GB. [2018-10-23 21:10:40,595 INFO L168 Benchmark]: Boogie Preprocessor took 850.56 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 100.8 MB). Peak memory consumption was 100.8 MB. Max. memory is 7.1 GB. [2018-10-23 21:10:40,596 INFO L168 Benchmark]: RCFGBuilder took 18285.44 ms. Allocated memory was 2.4 GB in the beginning and 2.7 GB in the end (delta: 283.1 MB). Free memory was 2.0 GB in the beginning and 2.4 GB in the end (delta: -394.1 MB). Peak memory consumption was 827.5 MB. Max. memory is 7.1 GB. [2018-10-23 21:10:40,597 INFO L168 Benchmark]: TraceAbstraction took 207799.28 ms. Allocated memory was 2.7 GB in the beginning and 4.5 GB in the end (delta: 1.8 GB). Free memory was 2.4 GB in the beginning and 3.6 GB in the end (delta: -1.1 GB). Peak memory consumption was 662.3 MB. Max. memory is 7.1 GB. [2018-10-23 21:10:40,603 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 3334.01 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 392.7 MB). Peak memory consumption was 392.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 1236.10 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 869.3 MB). Free memory was 1.0 GB in the beginning and 2.2 GB in the end (delta: -1.1 GB). Peak memory consumption was 117.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 850.56 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 100.8 MB). Peak memory consumption was 100.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 18285.44 ms. Allocated memory was 2.4 GB in the beginning and 2.7 GB in the end (delta: 283.1 MB). Free memory was 2.0 GB in the beginning and 2.4 GB in the end (delta: -394.1 MB). Peak memory consumption was 827.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 207799.28 ms. Allocated memory was 2.7 GB in the beginning and 4.5 GB in the end (delta: 1.8 GB). Free memory was 2.4 GB in the beginning and 3.6 GB in the end (delta: -1.1 GB). Peak memory consumption was 662.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 184]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 184). Cancelled while BasicCegarLoop was constructing difference of abstraction (265852states) and FLOYD_HOARE automaton (currently 4 states, 4 states before enhancement),while ReachableStatesComputation was computing reachable states (137399 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1749 locations, 1 error locations. TIMEOUT Result, 207.7s OverallTime, 8 OverallIterations, 5 TraceHistogramMax, 185.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 10542 SDtfs, 33287 SDslu, 3460 SDs, 0 SdLazy, 81514 SolverSat, 19358 SolverUnsat, 3 SolverUnknown, 0 SolverNotchecked, 152.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 38 GetRequests, 12 SyntacticMatches, 4 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 2.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=265852occurred in iteration=7, 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: 11.8s AutomataMinimizationTime, 7 MinimizatonAttempts, 14079 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 4.4s InterpolantComputationTime, 4367 NumberOfCodeBlocks, 4367 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 4359 ConstructedInterpolants, 0 QuantifiedInterpolants, 7523669 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 3826/3826 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown