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_label22_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 18:39:44,852 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 18:39:44,855 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 18:39:44,872 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 18:39:44,873 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 18:39:44,874 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 18:39:44,875 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 18:39:44,877 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 18:39:44,878 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 18:39:44,879 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 18:39:44,880 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 18:39:44,880 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 18:39:44,881 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 18:39:44,882 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 18:39:44,883 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 18:39:44,884 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 18:39:44,885 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 18:39:44,887 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 18:39:44,891 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 18:39:44,897 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 18:39:44,900 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 18:39:44,901 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 18:39:44,905 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-23 18:39:44,915 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 18:39:44,941 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 18:39:44,942 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 18:39:44,943 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 18:39:44,943 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-23 18:39:44,944 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-23 18:39:44,944 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-23 18:39:44,944 INFO L133 SettingsManager]: * Use SBE=true [2018-10-23 18:39:44,945 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 18:39:44,945 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 18:39:44,945 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 18:39:44,945 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 18:39:44,945 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 18:39:44,946 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 18:39:44,948 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 18:39:44,948 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 18:39:44,948 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 18:39:44,949 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 18:39:44,949 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 18:39:44,949 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 18:39:44,949 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 18:39:44,949 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 18:39:44,949 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 18:39:44,950 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 18:39:44,950 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-23 18:39:44,950 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 18:39:44,950 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 18:39:44,950 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 18:39:44,951 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 18:39:44,994 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 18:39:45,007 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 18:39:45,011 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 18:39:45,013 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 18:39:45,014 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 18:39:45,014 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label22_false-unreach-call.c [2018-10-23 18:39:45,076 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/f5e3ac1a6/adaca5f47148497a8f246b6a4bc8fa99/FLAGa13264d8f [2018-10-23 18:39:45,987 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 18:39:45,988 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label22_false-unreach-call.c [2018-10-23 18:39:46,032 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/f5e3ac1a6/adaca5f47148497a8f246b6a4bc8fa99/FLAGa13264d8f [2018-10-23 18:39:46,047 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/f5e3ac1a6/adaca5f47148497a8f246b6a4bc8fa99 [2018-10-23 18:39:46,060 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 18:39:46,062 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 18:39:46,063 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 18:39:46,064 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 18:39:46,069 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 18:39:46,070 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:39:46" (1/1) ... [2018-10-23 18:39:46,073 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a9fe7b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:39:46, skipping insertion in model container [2018-10-23 18:39:46,074 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:39:46" (1/1) ... [2018-10-23 18:39:46,086 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 18:39:46,350 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 18:39:48,411 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 18:39:48,416 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 18:39:49,531 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 18:39:49,600 INFO L193 MainTranslator]: Completed translation [2018-10-23 18:39:49,601 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:39:49 WrapperNode [2018-10-23 18:39:49,601 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 18:39:49,603 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 18:39:49,603 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 18:39:49,603 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 18:39:49,614 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:39:49" (1/1) ... [2018-10-23 18:39:49,715 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:39:49" (1/1) ... [2018-10-23 18:39:50,836 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 18:39:50,837 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 18:39:50,837 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 18:39:50,837 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 18:39:50,848 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:39:49" (1/1) ... [2018-10-23 18:39:50,849 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:39:49" (1/1) ... [2018-10-23 18:39:50,939 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:39:49" (1/1) ... [2018-10-23 18:39:50,940 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:39:49" (1/1) ... [2018-10-23 18:39:51,232 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:39:49" (1/1) ... [2018-10-23 18:39:51,288 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:39:49" (1/1) ... [2018-10-23 18:39:51,419 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:39:49" (1/1) ... [2018-10-23 18:39:51,622 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 18:39:51,623 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 18:39:51,623 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 18:39:51,623 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 18:39:51,625 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:39:49" (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 18:39:51,697 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-23 18:39:51,698 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 18:39:51,698 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 18:40:09,617 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 18:40:09,619 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:40:09 BoogieIcfgContainer [2018-10-23 18:40:09,619 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 18:40:09,621 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 18:40:09,621 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 18:40:09,624 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 18:40:09,625 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 06:39:46" (1/3) ... [2018-10-23 18:40:09,625 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e91633e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:40:09, skipping insertion in model container [2018-10-23 18:40:09,626 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:39:49" (2/3) ... [2018-10-23 18:40:09,626 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e91633e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:40:09, skipping insertion in model container [2018-10-23 18:40:09,627 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:40:09" (3/3) ... [2018-10-23 18:40:09,629 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label22_false-unreach-call.c [2018-10-23 18:40:09,639 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 18:40:09,650 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 18:40:09,669 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 18:40:09,729 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-23 18:40:09,730 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 18:40:09,730 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 18:40:09,730 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 18:40:09,730 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 18:40:09,730 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 18:40:09,731 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 18:40:09,731 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 18:40:09,731 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 18:40:09,785 INFO L276 IsEmpty]: Start isEmpty. Operand 1749 states. [2018-10-23 18:40:09,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-10-23 18:40:09,793 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:40:09,795 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] [2018-10-23 18:40:09,797 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:40:09,804 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:40:09,804 INFO L82 PathProgramCache]: Analyzing trace with hash 808956810, now seen corresponding path program 1 times [2018-10-23 18:40:09,806 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:40:09,806 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:40:09,865 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:40:09,865 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:40:09,866 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:40:09,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:40:10,245 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 18:40:10,247 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:40:10,248 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 18:40:10,257 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:40:10,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:40:10,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:40:10,272 INFO L87 Difference]: Start difference. First operand 1749 states. Second operand 4 states. [2018-10-23 18:40:36,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:40:36,082 INFO L93 Difference]: Finished difference Result 6326 states and 12085 transitions. [2018-10-23 18:40:36,083 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:40:36,085 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2018-10-23 18:40:36,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:40:36,229 INFO L225 Difference]: With dead ends: 6326 [2018-10-23 18:40:36,230 INFO L226 Difference]: Without dead ends: 4570 [2018-10-23 18:40:36,241 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 18:40:36,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4570 states. [2018-10-23 18:40:36,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4570 to 4564. [2018-10-23 18:40:36,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4564 states. [2018-10-23 18:40:36,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4564 states to 4564 states and 7499 transitions. [2018-10-23 18:40:36,487 INFO L78 Accepts]: Start accepts. Automaton has 4564 states and 7499 transitions. Word has length 30 [2018-10-23 18:40:36,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:40:36,487 INFO L481 AbstractCegarLoop]: Abstraction has 4564 states and 7499 transitions. [2018-10-23 18:40:36,487 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:40:36,488 INFO L276 IsEmpty]: Start isEmpty. Operand 4564 states and 7499 transitions. [2018-10-23 18:40:36,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-10-23 18:40:36,497 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:40:36,498 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:40:36,498 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:40:36,499 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:40:36,499 INFO L82 PathProgramCache]: Analyzing trace with hash 2106615927, now seen corresponding path program 1 times [2018-10-23 18:40:36,499 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:40:36,499 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:40:36,502 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:40:36,503 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:40:36,503 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:40:36,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:40:37,030 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 18:40:37,031 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:40:37,031 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 18:40:37,034 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:40:37,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:40:37,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:40:37,035 INFO L87 Difference]: Start difference. First operand 4564 states and 7499 transitions. Second operand 4 states. [2018-10-23 18:41:03,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:41:03,703 INFO L93 Difference]: Finished difference Result 17552 states and 29056 transitions. [2018-10-23 18:41:03,704 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:41:03,704 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 134 [2018-10-23 18:41:03,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:41:03,771 INFO L225 Difference]: With dead ends: 17552 [2018-10-23 18:41:03,771 INFO L226 Difference]: Without dead ends: 12990 [2018-10-23 18:41:03,780 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 18:41:03,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12990 states. [2018-10-23 18:41:03,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12990 to 8666. [2018-10-23 18:41:03,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8666 states. [2018-10-23 18:41:03,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8666 states to 8666 states and 13862 transitions. [2018-10-23 18:41:03,981 INFO L78 Accepts]: Start accepts. Automaton has 8666 states and 13862 transitions. Word has length 134 [2018-10-23 18:41:03,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:41:03,985 INFO L481 AbstractCegarLoop]: Abstraction has 8666 states and 13862 transitions. [2018-10-23 18:41:03,985 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:41:03,985 INFO L276 IsEmpty]: Start isEmpty. Operand 8666 states and 13862 transitions. [2018-10-23 18:41:03,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-10-23 18:41:03,991 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:41:03,991 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:41:03,991 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:41:03,992 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:41:03,995 INFO L82 PathProgramCache]: Analyzing trace with hash -1024214355, now seen corresponding path program 1 times [2018-10-23 18:41:03,996 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:41:03,996 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:41:03,997 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:41:03,997 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:41:03,997 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:41:04,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:41:04,385 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 18:41:04,386 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:41:04,386 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 18:41:04,386 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:41:04,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:41:04,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:41:04,388 INFO L87 Difference]: Start difference. First operand 8666 states and 13862 transitions. Second operand 4 states. [2018-10-23 18:41:26,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:41:26,016 INFO L93 Difference]: Finished difference Result 33845 states and 54415 transitions. [2018-10-23 18:41:26,017 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:41:26,018 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 138 [2018-10-23 18:41:26,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:41:26,092 INFO L225 Difference]: With dead ends: 33845 [2018-10-23 18:41:26,092 INFO L226 Difference]: Without dead ends: 25181 [2018-10-23 18:41:26,105 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 18:41:26,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25181 states. [2018-10-23 18:41:26,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25181 to 25141. [2018-10-23 18:41:26,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25141 states. [2018-10-23 18:41:26,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25141 states to 25141 states and 35895 transitions. [2018-10-23 18:41:26,473 INFO L78 Accepts]: Start accepts. Automaton has 25141 states and 35895 transitions. Word has length 138 [2018-10-23 18:41:26,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:41:26,474 INFO L481 AbstractCegarLoop]: Abstraction has 25141 states and 35895 transitions. [2018-10-23 18:41:26,474 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:41:26,474 INFO L276 IsEmpty]: Start isEmpty. Operand 25141 states and 35895 transitions. [2018-10-23 18:41:26,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2018-10-23 18:41:26,476 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:41:26,477 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:41:26,477 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:41:26,477 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:41:26,478 INFO L82 PathProgramCache]: Analyzing trace with hash -2023606249, now seen corresponding path program 1 times [2018-10-23 18:41:26,478 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:41:26,478 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:41:26,479 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:41:26,479 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:41:26,479 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:41:26,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:41:26,688 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 18:41:26,689 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:41:26,689 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 18:41:26,689 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:41:26,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:41:26,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:41:26,690 INFO L87 Difference]: Start difference. First operand 25141 states and 35895 transitions. Second operand 4 states. [2018-10-23 18:41:46,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:41:46,778 INFO L93 Difference]: Finished difference Result 98401 states and 140808 transitions. [2018-10-23 18:41:46,779 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:41:46,779 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 161 [2018-10-23 18:41:46,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:41:46,942 INFO L225 Difference]: With dead ends: 98401 [2018-10-23 18:41:46,942 INFO L226 Difference]: Without dead ends: 73262 [2018-10-23 18:41:46,978 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 [2018-10-23 18:41:47,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73262 states. [2018-10-23 18:41:47,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73262 to 73242. [2018-10-23 18:41:47,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73242 states. [2018-10-23 18:41:47,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73242 states to 73242 states and 91802 transitions. [2018-10-23 18:41:47,919 INFO L78 Accepts]: Start accepts. Automaton has 73242 states and 91802 transitions. Word has length 161 [2018-10-23 18:41:47,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:41:47,920 INFO L481 AbstractCegarLoop]: Abstraction has 73242 states and 91802 transitions. [2018-10-23 18:41:47,920 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:41:47,920 INFO L276 IsEmpty]: Start isEmpty. Operand 73242 states and 91802 transitions. [2018-10-23 18:41:47,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 400 [2018-10-23 18:41:47,933 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:41:47,933 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-23 18:41:47,933 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:41:47,934 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:41:47,934 INFO L82 PathProgramCache]: Analyzing trace with hash -463791105, now seen corresponding path program 1 times [2018-10-23 18:41:47,934 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:41:47,934 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:41:47,935 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:41:47,935 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:41:47,936 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:41:48,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:41:48,514 WARN L179 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-10-23 18:41:48,875 WARN L179 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 18 [2018-10-23 18:41:49,446 WARN L179 SmtUtils]: Spent 496.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 18 [2018-10-23 18:41:49,868 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 187 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2018-10-23 18:41:49,869 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:41:49,869 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-23 18:41:49,870 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-23 18:41:49,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-23 18:41:49,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-23 18:41:49,871 INFO L87 Difference]: Start difference. First operand 73242 states and 91802 transitions. Second operand 7 states. [2018-10-23 18:42:27,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:42:27,021 INFO L93 Difference]: Finished difference Result 172450 states and 210843 transitions. [2018-10-23 18:42:27,024 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 18:42:27,024 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 399 [2018-10-23 18:42:27,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:42:27,157 INFO L225 Difference]: With dead ends: 172450 [2018-10-23 18:42:27,158 INFO L226 Difference]: Without dead ends: 99210 [2018-10-23 18:42:27,205 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 18:42:27,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99210 states. [2018-10-23 18:42:28,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99210 to 95106. [2018-10-23 18:42:28,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95106 states. [2018-10-23 18:42:28,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95106 states to 95106 states and 114323 transitions. [2018-10-23 18:42:28,227 INFO L78 Accepts]: Start accepts. Automaton has 95106 states and 114323 transitions. Word has length 399 [2018-10-23 18:42:28,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:42:28,227 INFO L481 AbstractCegarLoop]: Abstraction has 95106 states and 114323 transitions. [2018-10-23 18:42:28,228 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-23 18:42:28,228 INFO L276 IsEmpty]: Start isEmpty. Operand 95106 states and 114323 transitions. [2018-10-23 18:42:28,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 428 [2018-10-23 18:42:28,238 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:42:28,238 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-23 18:42:28,239 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:42:28,239 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:42:28,239 INFO L82 PathProgramCache]: Analyzing trace with hash -1131351515, now seen corresponding path program 1 times [2018-10-23 18:42:28,239 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:42:28,240 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:42:28,240 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:42:28,241 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:42:28,241 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:42:28,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:42:28,721 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 215 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 18:42:28,722 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:42:28,722 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 18:42:28,723 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:42:28,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:42:28,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:42:28,723 INFO L87 Difference]: Start difference. First operand 95106 states and 114323 transitions. Second operand 4 states. [2018-10-23 18:42:47,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:42:47,149 INFO L93 Difference]: Finished difference Result 239398 states and 292812 transitions. [2018-10-23 18:42:47,149 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:42:47,149 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 427 [2018-10-23 18:42:47,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:42:47,307 INFO L225 Difference]: With dead ends: 239398 [2018-10-23 18:42:47,308 INFO L226 Difference]: Without dead ends: 144294 [2018-10-23 18:42:47,374 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:42:47,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144294 states. [2018-10-23 18:42:49,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144294 to 142917. [2018-10-23 18:42:49,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142917 states. [2018-10-23 18:42:49,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142917 states to 142917 states and 167351 transitions. [2018-10-23 18:42:49,625 INFO L78 Accepts]: Start accepts. Automaton has 142917 states and 167351 transitions. Word has length 427 [2018-10-23 18:42:49,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:42:49,626 INFO L481 AbstractCegarLoop]: Abstraction has 142917 states and 167351 transitions. [2018-10-23 18:42:49,626 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:42:49,626 INFO L276 IsEmpty]: Start isEmpty. Operand 142917 states and 167351 transitions. [2018-10-23 18:42:49,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 886 [2018-10-23 18:42:49,660 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:42:49,661 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-23 18:42:49,662 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:42:49,662 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:42:49,662 INFO L82 PathProgramCache]: Analyzing trace with hash -1473549646, now seen corresponding path program 1 times [2018-10-23 18:42:49,662 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:42:49,662 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:42:49,663 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:42:49,663 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:42:49,664 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:42:49,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:42:50,872 INFO L134 CoverageAnalysis]: Checked inductivity of 521 backedges. 215 proven. 0 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2018-10-23 18:42:50,873 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:42:50,873 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 18:42:50,875 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:42:50,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:42:50,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:42:50,876 INFO L87 Difference]: Start difference. First operand 142917 states and 167351 transitions. Second operand 4 states. [2018-10-23 18:43:07,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:43:07,805 INFO L93 Difference]: Finished difference Result 285835 states and 334709 transitions. [2018-10-23 18:43:07,810 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:43:07,810 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 885 [2018-10-23 18:43:07,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:43:07,980 INFO L225 Difference]: With dead ends: 285835 [2018-10-23 18:43:07,981 INFO L226 Difference]: Without dead ends: 142920 [2018-10-23 18:43:08,054 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 [2018-10-23 18:43:08,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142920 states. [2018-10-23 18:43:09,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142920 to 131981. [2018-10-23 18:43:09,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131981 states. [2018-10-23 18:43:09,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131981 states to 131981 states and 147277 transitions. [2018-10-23 18:43:09,276 INFO L78 Accepts]: Start accepts. Automaton has 131981 states and 147277 transitions. Word has length 885 [2018-10-23 18:43:09,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:43:09,277 INFO L481 AbstractCegarLoop]: Abstraction has 131981 states and 147277 transitions. [2018-10-23 18:43:09,277 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:43:09,277 INFO L276 IsEmpty]: Start isEmpty. Operand 131981 states and 147277 transitions. [2018-10-23 18:43:09,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 904 [2018-10-23 18:43:09,292 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:43:09,293 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-23 18:43:09,293 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:43:09,293 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:43:09,293 INFO L82 PathProgramCache]: Analyzing trace with hash -1654264730, now seen corresponding path program 1 times [2018-10-23 18:43:09,294 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:43:09,294 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:43:09,294 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:43:09,295 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:43:09,295 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:43:10,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:43:11,568 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 478 trivial. 0 not checked. [2018-10-23 18:43:11,568 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:43:11,569 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 18:43:11,570 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:43:11,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:43:11,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:43:11,570 INFO L87 Difference]: Start difference. First operand 131981 states and 147277 transitions. Second operand 4 states. [2018-10-23 18:43:34,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:43:34,151 INFO L93 Difference]: Finished difference Result 432118 states and 482512 transitions. [2018-10-23 18:43:34,151 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:43:34,152 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 903 [2018-10-23 18:43:34,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:43:34,464 INFO L225 Difference]: With dead ends: 432118 [2018-10-23 18:43:34,464 INFO L226 Difference]: Without dead ends: 289207 [2018-10-23 18:43:34,532 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 3 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 18:43:34,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289207 states. [2018-10-23 18:43:38,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289207 to 280860. [2018-10-23 18:43:38,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 280860 states. [2018-10-23 18:43:38,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280860 states to 280860 states and 307630 transitions. [2018-10-23 18:43:38,809 INFO L78 Accepts]: Start accepts. Automaton has 280860 states and 307630 transitions. Word has length 903 [2018-10-23 18:43:38,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:43:38,810 INFO L481 AbstractCegarLoop]: Abstraction has 280860 states and 307630 transitions. [2018-10-23 18:43:38,810 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:43:38,810 INFO L276 IsEmpty]: Start isEmpty. Operand 280860 states and 307630 transitions. [2018-10-23 18:43:38,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1071 [2018-10-23 18:43:38,832 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:43:38,833 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:43:38,833 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:43:38,834 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:43:38,834 INFO L82 PathProgramCache]: Analyzing trace with hash -683705303, now seen corresponding path program 1 times [2018-10-23 18:43:38,834 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:43:38,834 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:43:38,835 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:43:38,835 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:43:38,836 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:43:38,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Received shutdown request... [2018-10-23 18:43:41,806 INFO L134 CoverageAnalysis]: Checked inductivity of 895 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 812 trivial. 0 not checked. [2018-10-23 18:43:41,807 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:43:41,808 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 18:43:41,809 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:43:41,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:43:41,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:43:41,809 INFO L87 Difference]: Start difference. First operand 280860 states and 307630 transitions. Second operand 4 states. [2018-10-23 18:43:41,810 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-23 18:43:41,811 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-23 18:43:41,817 WARN L205 ceAbstractionStarter]: Timeout [2018-10-23 18:43:41,818 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 06:43:41 BoogieIcfgContainer [2018-10-23 18:43:41,818 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 18:43:41,819 INFO L168 Benchmark]: Toolchain (without parser) took 235758.52 ms. Allocated memory was 1.5 GB in the beginning and 3.2 GB in the end (delta: 1.7 GB). Free memory was 1.4 GB in the beginning and 551.5 MB in the end (delta: 845.3 MB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. [2018-10-23 18:43:41,822 INFO L168 Benchmark]: CDTParser took 0.23 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 18:43:41,824 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3538.04 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 18:43:41,825 INFO L168 Benchmark]: Boogie Procedure Inliner took 1234.17 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 860.9 MB). Free memory was 1.0 GB in the beginning and 2.1 GB in the end (delta: -1.1 GB). Peak memory consumption was 117.1 MB. Max. memory is 7.1 GB. [2018-10-23 18:43:41,826 INFO L168 Benchmark]: Boogie Preprocessor took 785.52 ms. Allocated memory is still 2.4 GB. Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 99.9 MB). Peak memory consumption was 99.9 MB. Max. memory is 7.1 GB. [2018-10-23 18:43:41,827 INFO L168 Benchmark]: RCFGBuilder took 17996.44 ms. Allocated memory was 2.4 GB in the beginning and 2.7 GB in the end (delta: 282.1 MB). Free memory was 2.0 GB in the beginning and 2.4 GB in the end (delta: -406.7 MB). Peak memory consumption was 858.1 MB. Max. memory is 7.1 GB. [2018-10-23 18:43:41,828 INFO L168 Benchmark]: TraceAbstraction took 212197.71 ms. Allocated memory was 2.7 GB in the beginning and 3.2 GB in the end (delta: 544.2 MB). Free memory was 2.4 GB in the beginning and 551.5 MB in the end (delta: 1.9 GB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. [2018-10-23 18:43:41,840 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 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 3538.04 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 1234.17 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 860.9 MB). Free memory was 1.0 GB in the beginning and 2.1 GB in the end (delta: -1.1 GB). Peak memory consumption was 117.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 785.52 ms. Allocated memory is still 2.4 GB. Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 99.9 MB). Peak memory consumption was 99.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 17996.44 ms. Allocated memory was 2.4 GB in the beginning and 2.7 GB in the end (delta: 282.1 MB). Free memory was 2.0 GB in the beginning and 2.4 GB in the end (delta: -406.7 MB). Peak memory consumption was 858.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 212197.71 ms. Allocated memory was 2.7 GB in the beginning and 3.2 GB in the end (delta: 544.2 MB). Free memory was 2.4 GB in the beginning and 551.5 MB in the end (delta: 1.9 GB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 103]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 103). Cancelled while BasicCegarLoop was constructing difference of abstraction (280860states) and FLOYD_HOARE automaton (currently 2 states, 4 states before enhancement),while ReachableStatesComputation was computing reachable states (1 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1749 locations, 1 error locations. TIMEOUT Result, 212.0s OverallTime, 9 OverallIterations, 4 TraceHistogramMax, 190.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 8199 SDtfs, 31054 SDslu, 3883 SDs, 0 SdLazy, 85250 SolverSat, 18641 SolverUnsat, 5 SolverUnknown, 0 SolverNotchecked, 159.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 44 GetRequests, 14 SyntacticMatches, 6 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 2.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=280860occurred 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: 10.5s AutomataMinimizationTime, 8 MinimizatonAttempts, 29157 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 1.7s SatisfiabilityAnalysisTime, 5.2s InterpolantComputationTime, 4147 NumberOfCodeBlocks, 4147 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 4138 ConstructedInterpolants, 0 QuantifiedInterpolants, 4749664 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 2488/2488 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown