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_label06_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 17:02:03,546 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 17:02:03,548 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 17:02:03,568 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 17:02:03,568 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 17:02:03,570 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 17:02:03,571 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 17:02:03,573 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 17:02:03,575 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 17:02:03,584 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 17:02:03,584 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 17:02:03,585 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 17:02:03,587 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 17:02:03,588 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 17:02:03,592 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 17:02:03,593 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 17:02:03,593 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 17:02:03,596 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 17:02:03,600 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 17:02:03,602 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 17:02:03,603 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 17:02:03,606 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 17:02:03,613 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 17:02:03,625 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 [2018-10-24 17:02:03,651 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 17:02:03,652 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 17:02:03,652 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 17:02:03,653 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-24 17:02:03,653 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-24 17:02:03,653 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-24 17:02:03,654 INFO L133 SettingsManager]: * Use SBE=true [2018-10-24 17:02:03,654 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 17:02:03,654 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 17:02:03,654 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 17:02:03,654 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 17:02:03,655 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 17:02:03,655 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 17:02:03,655 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 17:02:03,655 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 17:02:03,655 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 17:02:03,655 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 17:02:03,656 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 17:02:03,656 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 17:02:03,656 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 17:02:03,656 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 17:02:03,656 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 17:02:03,657 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 17:02:03,657 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-24 17:02:03,657 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 17:02:03,657 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 17:02:03,657 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 17:02:03,658 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 17:02:03,726 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 17:02:03,739 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 17:02:03,743 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 17:02:03,745 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 17:02:03,745 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 17:02:03,746 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label06_true-unreach-call.c [2018-10-24 17:02:03,811 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/6644d74e0/9430d0f8e7f94190b46e21ba2d39843d/FLAG9ed0b0a7c [2018-10-24 17:02:04,725 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 17:02:04,726 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label06_true-unreach-call.c [2018-10-24 17:02:04,773 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/6644d74e0/9430d0f8e7f94190b46e21ba2d39843d/FLAG9ed0b0a7c [2018-10-24 17:02:04,788 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/6644d74e0/9430d0f8e7f94190b46e21ba2d39843d [2018-10-24 17:02:04,799 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 17:02:04,801 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 17:02:04,802 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 17:02:04,802 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 17:02:04,806 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 17:02:04,807 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 05:02:04" (1/1) ... [2018-10-24 17:02:04,810 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@441f49ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:02:04, skipping insertion in model container [2018-10-24 17:02:04,811 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 05:02:04" (1/1) ... [2018-10-24 17:02:04,822 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 17:02:05,073 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 17:02:07,143 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 17:02:07,148 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 17:02:08,307 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 17:02:08,370 INFO L193 MainTranslator]: Completed translation [2018-10-24 17:02:08,370 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:02:08 WrapperNode [2018-10-24 17:02:08,371 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 17:02:08,372 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 17:02:08,372 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 17:02:08,372 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 17:02:08,382 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:02:08" (1/1) ... [2018-10-24 17:02:08,497 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:02:08" (1/1) ... [2018-10-24 17:02:09,709 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 17:02:09,710 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 17:02:09,710 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 17:02:09,710 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 17:02:09,721 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:02:08" (1/1) ... [2018-10-24 17:02:09,721 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:02:08" (1/1) ... [2018-10-24 17:02:09,794 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:02:08" (1/1) ... [2018-10-24 17:02:09,794 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:02:08" (1/1) ... [2018-10-24 17:02:10,008 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:02:08" (1/1) ... [2018-10-24 17:02:10,066 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:02:08" (1/1) ... [2018-10-24 17:02:10,176 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:02:08" (1/1) ... [2018-10-24 17:02:10,292 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 17:02:10,293 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 17:02:10,293 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 17:02:10,293 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 17:02:10,294 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:02:08" (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 [2018-10-24 17:02:10,363 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-24 17:02:10,363 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 17:02:10,363 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 17:02:27,064 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 17:02:27,065 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 05:02:27 BoogieIcfgContainer [2018-10-24 17:02:27,065 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 17:02:27,066 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 17:02:27,066 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 17:02:27,070 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 17:02:27,070 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 05:02:04" (1/3) ... [2018-10-24 17:02:27,071 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23ededbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 05:02:27, skipping insertion in model container [2018-10-24 17:02:27,071 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:02:08" (2/3) ... [2018-10-24 17:02:27,071 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23ededbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 05:02:27, skipping insertion in model container [2018-10-24 17:02:27,072 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 05:02:27" (3/3) ... [2018-10-24 17:02:27,074 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label06_true-unreach-call.c [2018-10-24 17:02:27,083 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 17:02:27,093 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 17:02:27,110 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 17:02:27,157 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-24 17:02:27,158 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 17:02:27,158 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 17:02:27,158 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 17:02:27,158 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 17:02:27,159 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 17:02:27,159 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 17:02:27,159 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 17:02:27,159 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 17:02:27,212 INFO L276 IsEmpty]: Start isEmpty. Operand 1749 states. [2018-10-24 17:02:27,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2018-10-24 17:02:27,222 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:02:27,223 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] [2018-10-24 17:02:27,225 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:02:27,231 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:02:27,232 INFO L82 PathProgramCache]: Analyzing trace with hash 1306950314, now seen corresponding path program 1 times [2018-10-24 17:02:27,234 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:02:27,235 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:02:27,292 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:02:27,293 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:02:27,293 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:02:27,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:02:27,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 17:02:27,834 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:02:27,834 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 17:02:27,839 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 17:02:27,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 17:02:27,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:02:27,858 INFO L87 Difference]: Start difference. First operand 1749 states. Second operand 4 states. [2018-10-24 17:02:52,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:02:52,903 INFO L93 Difference]: Finished difference Result 6324 states and 12081 transitions. [2018-10-24 17:02:52,904 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 17:02:52,905 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 55 [2018-10-24 17:02:52,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:02:52,961 INFO L225 Difference]: With dead ends: 6324 [2018-10-24 17:02:52,962 INFO L226 Difference]: Without dead ends: 4568 [2018-10-24 17:02:52,974 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 [2018-10-24 17:02:52,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4568 states. [2018-10-24 17:02:53,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4568 to 4563. [2018-10-24 17:02:53,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4563 states. [2018-10-24 17:02:53,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4563 states to 4563 states and 7487 transitions. [2018-10-24 17:02:53,177 INFO L78 Accepts]: Start accepts. Automaton has 4563 states and 7487 transitions. Word has length 55 [2018-10-24 17:02:53,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:02:53,178 INFO L481 AbstractCegarLoop]: Abstraction has 4563 states and 7487 transitions. [2018-10-24 17:02:53,178 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 17:02:53,179 INFO L276 IsEmpty]: Start isEmpty. Operand 4563 states and 7487 transitions. [2018-10-24 17:02:53,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2018-10-24 17:02:53,185 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:02:53,185 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 17:02:53,186 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:02:53,186 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:02:53,186 INFO L82 PathProgramCache]: Analyzing trace with hash -1408201555, now seen corresponding path program 1 times [2018-10-24 17:02:53,186 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:02:53,186 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:02:53,187 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:02:53,188 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:02:53,188 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:02:53,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:02:53,603 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 17:02:53,603 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:02:53,603 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 17:02:53,607 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 17:02:53,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 17:02:53,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:02:53,608 INFO L87 Difference]: Start difference. First operand 4563 states and 7487 transitions. Second operand 4 states. [2018-10-24 17:03:25,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:03:25,317 INFO L93 Difference]: Finished difference Result 17544 states and 29003 transitions. [2018-10-24 17:03:25,317 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 17:03:25,317 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 133 [2018-10-24 17:03:25,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:03:25,378 INFO L225 Difference]: With dead ends: 17544 [2018-10-24 17:03:25,379 INFO L226 Difference]: Without dead ends: 12983 [2018-10-24 17:03:25,387 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 [2018-10-24 17:03:25,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12983 states. [2018-10-24 17:03:25,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12983 to 8662. [2018-10-24 17:03:25,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8662 states. [2018-10-24 17:03:25,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8662 states to 8662 states and 13841 transitions. [2018-10-24 17:03:25,572 INFO L78 Accepts]: Start accepts. Automaton has 8662 states and 13841 transitions. Word has length 133 [2018-10-24 17:03:25,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:03:25,573 INFO L481 AbstractCegarLoop]: Abstraction has 8662 states and 13841 transitions. [2018-10-24 17:03:25,573 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 17:03:25,574 INFO L276 IsEmpty]: Start isEmpty. Operand 8662 states and 13841 transitions. [2018-10-24 17:03:25,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2018-10-24 17:03:25,576 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:03:25,577 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 17:03:25,577 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:03:25,577 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:03:25,578 INFO L82 PathProgramCache]: Analyzing trace with hash -1752615795, now seen corresponding path program 1 times [2018-10-24 17:03:25,578 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:03:25,578 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:03:25,579 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:03:25,579 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:03:25,579 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:03:25,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:03:25,789 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 17:03:25,790 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:03:25,790 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 17:03:25,790 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 17:03:25,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 17:03:25,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:03:25,791 INFO L87 Difference]: Start difference. First operand 8662 states and 13841 transitions. Second operand 4 states. [2018-10-24 17:03:48,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:03:48,079 INFO L93 Difference]: Finished difference Result 33991 states and 54526 transitions. [2018-10-24 17:03:48,080 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 17:03:48,080 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 153 [2018-10-24 17:03:48,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:03:48,143 INFO L225 Difference]: With dead ends: 33991 [2018-10-24 17:03:48,143 INFO L226 Difference]: Without dead ends: 25331 [2018-10-24 17:03:48,153 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:03:48,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25331 states. [2018-10-24 17:03:48,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25331 to 25321. [2018-10-24 17:03:48,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25321 states. [2018-10-24 17:03:48,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25321 states to 25321 states and 34467 transitions. [2018-10-24 17:03:48,549 INFO L78 Accepts]: Start accepts. Automaton has 25321 states and 34467 transitions. Word has length 153 [2018-10-24 17:03:48,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:03:48,549 INFO L481 AbstractCegarLoop]: Abstraction has 25321 states and 34467 transitions. [2018-10-24 17:03:48,549 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 17:03:48,549 INFO L276 IsEmpty]: Start isEmpty. Operand 25321 states and 34467 transitions. [2018-10-24 17:03:48,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2018-10-24 17:03:48,554 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:03:48,554 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 17:03:48,558 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:03:48,559 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:03:48,559 INFO L82 PathProgramCache]: Analyzing trace with hash -1710485834, now seen corresponding path program 1 times [2018-10-24 17:03:48,559 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:03:48,559 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:03:48,563 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:03:48,563 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:03:48,563 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:03:48,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:03:48,864 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-10-24 17:03:49,169 WARN L179 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 19 [2018-10-24 17:03:49,358 WARN L179 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 24 [2018-10-24 17:03:49,416 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 17:03:49,417 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:03:49,417 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 17:03:49,417 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 17:03:49,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 17:03:49,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-10-24 17:03:49,418 INFO L87 Difference]: Start difference. First operand 25321 states and 34467 transitions. Second operand 6 states. [2018-10-24 17:04:21,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:04:21,565 INFO L93 Difference]: Finished difference Result 82151 states and 109854 transitions. [2018-10-24 17:04:21,566 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-24 17:04:21,566 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 160 [2018-10-24 17:04:21,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:04:21,653 INFO L225 Difference]: With dead ends: 82151 [2018-10-24 17:04:21,654 INFO L226 Difference]: Without dead ends: 56832 [2018-10-24 17:04:21,677 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2018-10-24 17:04:21,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56832 states. [2018-10-24 17:04:22,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56832 to 55390. [2018-10-24 17:04:22,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55390 states. [2018-10-24 17:04:22,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55390 states to 55390 states and 72762 transitions. [2018-10-24 17:04:22,399 INFO L78 Accepts]: Start accepts. Automaton has 55390 states and 72762 transitions. Word has length 160 [2018-10-24 17:04:22,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:04:22,399 INFO L481 AbstractCegarLoop]: Abstraction has 55390 states and 72762 transitions. [2018-10-24 17:04:22,399 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 17:04:22,399 INFO L276 IsEmpty]: Start isEmpty. Operand 55390 states and 72762 transitions. [2018-10-24 17:04:22,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2018-10-24 17:04:22,406 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:04:22,407 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 17:04:22,407 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:04:22,407 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:04:22,407 INFO L82 PathProgramCache]: Analyzing trace with hash 1479259088, now seen corresponding path program 1 times [2018-10-24 17:04:22,408 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:04:22,408 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:04:22,409 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:04:22,409 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:04:22,409 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:04:22,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:04:22,916 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2018-10-24 17:04:22,916 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 17:04:22,916 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 17:04:22,927 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:04:23,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:04:23,029 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 17:04:23,142 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 17:04:23,166 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 17:04:23,166 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2018-10-24 17:04:23,167 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 17:04:23,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 17:04:23,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:04:23,168 INFO L87 Difference]: Start difference. First operand 55390 states and 72762 transitions. Second operand 4 states. [2018-10-24 17:04:43,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:04:43,592 INFO L93 Difference]: Finished difference Result 190169 states and 250350 transitions. [2018-10-24 17:04:43,592 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 17:04:43,592 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 291 [2018-10-24 17:04:43,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:04:43,930 INFO L225 Difference]: With dead ends: 190169 [2018-10-24 17:04:43,930 INFO L226 Difference]: Without dead ends: 134781 [2018-10-24 17:04:43,995 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 291 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:04:44,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134781 states. [2018-10-24 17:04:45,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134781 to 96376. [2018-10-24 17:04:45,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96376 states. [2018-10-24 17:04:45,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96376 states to 96376 states and 117972 transitions. [2018-10-24 17:04:45,736 INFO L78 Accepts]: Start accepts. Automaton has 96376 states and 117972 transitions. Word has length 291 [2018-10-24 17:04:45,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:04:45,737 INFO L481 AbstractCegarLoop]: Abstraction has 96376 states and 117972 transitions. [2018-10-24 17:04:45,737 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 17:04:45,737 INFO L276 IsEmpty]: Start isEmpty. Operand 96376 states and 117972 transitions. [2018-10-24 17:04:45,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 453 [2018-10-24 17:04:45,747 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:04:45,748 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 17:04:45,748 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:04:45,749 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:04:45,749 INFO L82 PathProgramCache]: Analyzing trace with hash -244394191, now seen corresponding path program 1 times [2018-10-24 17:04:45,749 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:04:45,749 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:04:45,750 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:04:45,750 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:04:45,750 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:04:45,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:04:46,856 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 265 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 17:04:46,856 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:04:46,856 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 17:04:46,858 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 17:04:46,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 17:04:46,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:04:46,859 INFO L87 Difference]: Start difference. First operand 96376 states and 117972 transitions. Second operand 4 states. [2018-10-24 17:05:08,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:05:08,347 INFO L93 Difference]: Finished difference Result 217335 states and 267284 transitions. [2018-10-24 17:05:08,350 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 17:05:08,350 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 452 [2018-10-24 17:05:08,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:05:08,514 INFO L225 Difference]: With dead ends: 217335 [2018-10-24 17:05:08,514 INFO L226 Difference]: Without dead ends: 120961 [2018-10-24 17:05:08,574 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 [2018-10-24 17:05:08,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120961 states. [2018-10-24 17:05:09,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120961 to 120950. [2018-10-24 17:05:09,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120950 states. [2018-10-24 17:05:09,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120950 states to 120950 states and 138744 transitions. [2018-10-24 17:05:09,742 INFO L78 Accepts]: Start accepts. Automaton has 120950 states and 138744 transitions. Word has length 452 [2018-10-24 17:05:09,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:05:09,743 INFO L481 AbstractCegarLoop]: Abstraction has 120950 states and 138744 transitions. [2018-10-24 17:05:09,743 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 17:05:09,743 INFO L276 IsEmpty]: Start isEmpty. Operand 120950 states and 138744 transitions. [2018-10-24 17:05:09,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 913 [2018-10-24 17:05:09,778 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:05:09,779 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 17:05:09,779 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:05:09,780 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:05:09,780 INFO L82 PathProgramCache]: Analyzing trace with hash -49250025, now seen corresponding path program 1 times [2018-10-24 17:05:09,780 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:05:09,780 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:05:09,781 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:05:09,781 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:05:09,782 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:05:09,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:05:11,305 INFO L134 CoverageAnalysis]: Checked inductivity of 604 backedges. 298 proven. 0 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2018-10-24 17:05:11,306 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:05:11,306 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 17:05:11,307 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 17:05:11,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 17:05:11,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:05:11,308 INFO L87 Difference]: Start difference. First operand 120950 states and 138744 transitions. Second operand 4 states. [2018-10-24 17:05:28,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:05:28,266 INFO L93 Difference]: Finished difference Result 271965 states and 313762 transitions. [2018-10-24 17:05:28,266 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 17:05:28,266 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 912 [2018-10-24 17:05:28,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:05:29,098 INFO L225 Difference]: With dead ends: 271965 [2018-10-24 17:05:29,098 INFO L226 Difference]: Without dead ends: 151017 [2018-10-24 17:05:29,164 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:05:29,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151017 states. [2018-10-24 17:05:30,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151017 to 140074. [2018-10-24 17:05:30,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140074 states. [2018-10-24 17:05:30,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140074 states to 140074 states and 156812 transitions. [2018-10-24 17:05:30,364 INFO L78 Accepts]: Start accepts. Automaton has 140074 states and 156812 transitions. Word has length 912 [2018-10-24 17:05:30,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:05:30,365 INFO L481 AbstractCegarLoop]: Abstraction has 140074 states and 156812 transitions. [2018-10-24 17:05:30,366 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 17:05:30,366 INFO L276 IsEmpty]: Start isEmpty. Operand 140074 states and 156812 transitions. [2018-10-24 17:05:30,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 918 [2018-10-24 17:05:30,403 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:05:30,404 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 17:05:30,404 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:05:30,404 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:05:30,405 INFO L82 PathProgramCache]: Analyzing trace with hash 1931694652, now seen corresponding path program 1 times [2018-10-24 17:05:30,405 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:05:30,405 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:05:30,406 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:05:30,406 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:05:30,406 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:05:30,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:05:31,952 INFO L134 CoverageAnalysis]: Checked inductivity of 689 backedges. 479 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2018-10-24 17:05:31,952 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:05:31,952 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 17:05:31,953 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 17:05:31,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 17:05:31,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:05:31,954 INFO L87 Difference]: Start difference. First operand 140074 states and 156812 transitions. Second operand 4 states. [2018-10-24 17:05:59,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:05:59,338 INFO L93 Difference]: Finished difference Result 400520 states and 447777 transitions. [2018-10-24 17:05:59,338 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 17:05:59,338 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 917 [2018-10-24 17:05:59,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:05:59,697 INFO L225 Difference]: With dead ends: 400520 [2018-10-24 17:05:59,697 INFO L226 Difference]: Without dead ends: 259081 [2018-10-24 17:05:59,791 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 4 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:05:59,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259081 states. [2018-10-24 17:06:02,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259081 to 250731. [2018-10-24 17:06:02,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250731 states. [2018-10-24 17:06:02,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250731 states to 250731 states and 275870 transitions. [2018-10-24 17:06:02,875 INFO L78 Accepts]: Start accepts. Automaton has 250731 states and 275870 transitions. Word has length 917 [2018-10-24 17:06:02,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:06:02,876 INFO L481 AbstractCegarLoop]: Abstraction has 250731 states and 275870 transitions. [2018-10-24 17:06:02,876 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 17:06:02,876 INFO L276 IsEmpty]: Start isEmpty. Operand 250731 states and 275870 transitions. [2018-10-24 17:06:02,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 927 [2018-10-24 17:06:02,895 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:06:02,896 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 17:06:02,896 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:06:02,896 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:06:02,897 INFO L82 PathProgramCache]: Analyzing trace with hash 1670023905, now seen corresponding path program 1 times [2018-10-24 17:06:02,897 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:06:02,897 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:06:02,898 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:06:02,898 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:06:02,898 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY Received shutdown request... [2018-10-24 17:06:02,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2018-10-24 17:06:02,981 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-24 17:06:02,981 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-24 17:06:02,997 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:06:03,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:06:03,241 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 17:06:03,278 WARN L187 SmtUtils]: Removed 1 from assertion stack [2018-10-24 17:06:03,278 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-10-24 17:06:03,480 WARN L522 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-24 17:06:03,480 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 17:06:03,485 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 17:06:03,486 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 05:06:03 BoogieIcfgContainer [2018-10-24 17:06:03,486 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 17:06:03,487 INFO L168 Benchmark]: Toolchain (without parser) took 238687.01 ms. Allocated memory was 1.5 GB in the beginning and 3.9 GB in the end (delta: 2.3 GB). Free memory was 1.4 GB in the beginning and 2.0 GB in the end (delta: -606.2 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. [2018-10-24 17:06:03,488 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. [2018-10-24 17:06:03,489 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3569.25 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. [2018-10-24 17:06:03,490 INFO L168 Benchmark]: Boogie Procedure Inliner took 1338.27 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 880.3 MB). Free memory was 1.0 GB in the beginning and 2.2 GB in the end (delta: -1.2 GB). Peak memory consumption was 117.1 MB. Max. memory is 7.1 GB. [2018-10-24 17:06:03,491 INFO L168 Benchmark]: Boogie Preprocessor took 582.21 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 109.5 MB). Peak memory consumption was 109.5 MB. Max. memory is 7.1 GB. [2018-10-24 17:06:03,494 INFO L168 Benchmark]: RCFGBuilder took 16772.72 ms. Allocated memory was 2.4 GB in the beginning and 2.7 GB in the end (delta: 295.7 MB). Free memory was 2.1 GB in the beginning and 2.4 GB in the end (delta: -373.7 MB). Peak memory consumption was 831.8 MB. Max. memory is 7.1 GB. [2018-10-24 17:06:03,496 INFO L168 Benchmark]: TraceAbstraction took 216419.81 ms. Allocated memory was 2.7 GB in the beginning and 3.9 GB in the end (delta: 1.1 GB). Free memory was 2.4 GB in the beginning and 2.0 GB in the end (delta: 422.7 MB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. [2018-10-24 17:06:03,504 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 3569.25 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 1338.27 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 880.3 MB). Free memory was 1.0 GB in the beginning and 2.2 GB in the end (delta: -1.2 GB). Peak memory consumption was 117.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 582.21 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 109.5 MB). Peak memory consumption was 109.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 16772.72 ms. Allocated memory was 2.4 GB in the beginning and 2.7 GB in the end (delta: 295.7 MB). Free memory was 2.1 GB in the beginning and 2.4 GB in the end (delta: -373.7 MB). Peak memory consumption was 831.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 216419.81 ms. Allocated memory was 2.7 GB in the beginning and 3.9 GB in the end (delta: 1.1 GB). Free memory was 2.4 GB in the beginning and 2.0 GB in the end (delta: 422.7 MB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 178]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 178). Cancelled while BasicCegarLoop was analyzing trace of length 927 with TraceHistMax 4,while TraceCheckSpWp was constructing forward predicates,while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1749 locations, 1 error locations. TIMEOUT Result, 216.3s OverallTime, 9 OverallIterations, 4 TraceHistogramMax, 199.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 9422 SDtfs, 32217 SDslu, 2878 SDs, 0 SdLazy, 72822 SolverSat, 19744 SolverUnsat, 7 SolverUnknown, 0 SolverNotchecked, 171.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 330 GetRequests, 303 SyntacticMatches, 7 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=250731occurred in iteration=8, 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: 8.6s AutomataMinimizationTime, 8 MinimizatonAttempts, 63487 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 3.6s InterpolantComputationTime, 3364 NumberOfCodeBlocks, 3364 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 3355 ConstructedInterpolants, 0 QuantifiedInterpolants, 3395088 SizeOfPredicates, 1 NumberOfNonLiveVariables, 353 ConjunctsInSsa, 2 ConjunctsInUnsatCore, 9 InterpolantComputations, 8 PerfectInterpolantSequences, 1814/1818 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown