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/Problem12_label00_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-26 19:04:50,653 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 19:04:50,655 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 19:04:50,672 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 19:04:50,672 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 19:04:50,674 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 19:04:50,677 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 19:04:50,679 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 19:04:50,681 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 19:04:50,682 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 19:04:50,683 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 19:04:50,683 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 19:04:50,684 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 19:04:50,686 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 19:04:50,688 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 19:04:50,688 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 19:04:50,689 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 19:04:50,694 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 19:04:50,699 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 19:04:50,701 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 19:04:50,702 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 19:04:50,703 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 19:04:50,713 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-26 19:04:50,713 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-26 19:04:50,714 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-26 19:04:50,714 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-26 19:04:50,715 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-26 19:04:50,716 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-26 19:04:50,717 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-26 19:04:50,718 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-26 19:04:50,718 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-26 19:04:50,724 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-26 19:04:50,724 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-26 19:04:50,725 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-26 19:04:50,726 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-26 19:04:50,729 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-26 19:04:50,729 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 [2018-10-26 19:04:50,751 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 19:04:50,751 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 19:04:50,752 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 19:04:50,752 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-26 19:04:50,753 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-26 19:04:50,753 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-26 19:04:50,753 INFO L133 SettingsManager]: * Use SBE=true [2018-10-26 19:04:50,753 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 19:04:50,753 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-26 19:04:50,754 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 19:04:50,754 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 19:04:50,754 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 19:04:50,754 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 19:04:50,754 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 19:04:50,755 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 19:04:50,755 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 19:04:50,755 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 19:04:50,755 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 19:04:50,755 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 19:04:50,756 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 19:04:50,756 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 19:04:50,756 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 19:04:50,756 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 19:04:50,756 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-26 19:04:50,757 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 19:04:50,757 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-26 19:04:50,757 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-26 19:04:50,757 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-26 19:04:50,800 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 19:04:50,812 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 19:04:50,816 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 19:04:50,818 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 19:04:50,818 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 19:04:50,819 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label00_false-unreach-call.c [2018-10-26 19:04:50,893 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/6ac7d1aa7/d60629a8b00f48708b9c8e45ba6b2966/FLAG6047622d0 [2018-10-26 19:04:51,700 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 19:04:51,701 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label00_false-unreach-call.c [2018-10-26 19:04:51,733 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/6ac7d1aa7/d60629a8b00f48708b9c8e45ba6b2966/FLAG6047622d0 [2018-10-26 19:04:51,755 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/6ac7d1aa7/d60629a8b00f48708b9c8e45ba6b2966 [2018-10-26 19:04:51,767 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 19:04:51,769 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-26 19:04:51,770 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 19:04:51,770 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 19:04:51,778 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 19:04:51,779 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 07:04:51" (1/1) ... [2018-10-26 19:04:51,782 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b326c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:04:51, skipping insertion in model container [2018-10-26 19:04:51,783 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 07:04:51" (1/1) ... [2018-10-26 19:04:51,793 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 19:04:51,961 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 19:04:53,272 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 19:04:53,277 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 19:04:53,847 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 19:04:53,880 INFO L193 MainTranslator]: Completed translation [2018-10-26 19:04:53,881 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:04:53 WrapperNode [2018-10-26 19:04:53,881 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 19:04:53,882 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-26 19:04:53,882 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-26 19:04:53,882 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-26 19:04:53,895 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:04:53" (1/1) ... [2018-10-26 19:04:53,957 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:04:53" (1/1) ... [2018-10-26 19:04:54,531 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-26 19:04:54,532 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 19:04:54,532 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 19:04:54,532 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 19:04:54,545 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:04:53" (1/1) ... [2018-10-26 19:04:54,545 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:04:53" (1/1) ... [2018-10-26 19:04:54,605 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:04:53" (1/1) ... [2018-10-26 19:04:54,605 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:04:53" (1/1) ... [2018-10-26 19:04:54,768 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:04:53" (1/1) ... [2018-10-26 19:04:54,827 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:04:53" (1/1) ... [2018-10-26 19:04:54,891 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:04:53" (1/1) ... [2018-10-26 19:04:54,963 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 19:04:54,964 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 19:04:54,964 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 19:04:54,964 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 19:04:54,965 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:04:53" (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 [2018-10-26 19:04:55,036 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-26 19:04:55,036 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 19:04:55,036 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 19:05:03,597 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 19:05:03,598 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 07:05:03 BoogieIcfgContainer [2018-10-26 19:05:03,598 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 19:05:03,599 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 19:05:03,599 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 19:05:03,603 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 19:05:03,603 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 07:04:51" (1/3) ... [2018-10-26 19:05:03,604 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6502e358 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 07:05:03, skipping insertion in model container [2018-10-26 19:05:03,604 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:04:53" (2/3) ... [2018-10-26 19:05:03,605 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6502e358 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 07:05:03, skipping insertion in model container [2018-10-26 19:05:03,607 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 07:05:03" (3/3) ... [2018-10-26 19:05:03,609 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label00_false-unreach-call.c [2018-10-26 19:05:03,619 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 19:05:03,637 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 19:05:03,655 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 19:05:03,711 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-26 19:05:03,712 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 19:05:03,712 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 19:05:03,712 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 19:05:03,713 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 19:05:03,713 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 19:05:03,713 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 19:05:03,713 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 19:05:03,713 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 19:05:03,757 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states. [2018-10-26 19:05:03,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-10-26 19:05:03,769 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:05:03,771 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:05:03,773 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:05:03,779 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:05:03,779 INFO L82 PathProgramCache]: Analyzing trace with hash 666618706, now seen corresponding path program 1 times [2018-10-26 19:05:03,782 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:05:03,782 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:05:03,838 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:05:03,839 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:05:03,839 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:05:03,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:05:04,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:05:04,114 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:05:04,114 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 19:05:04,119 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:05:04,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:05:04,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:05:04,139 INFO L87 Difference]: Start difference. First operand 819 states. Second operand 4 states. [2018-10-26 19:05:16,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:05:16,233 INFO L93 Difference]: Finished difference Result 3146 states and 6134 transitions. [2018-10-26 19:05:16,234 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:05:16,236 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2018-10-26 19:05:16,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:05:16,273 INFO L225 Difference]: With dead ends: 3146 [2018-10-26 19:05:16,274 INFO L226 Difference]: Without dead ends: 2320 [2018-10-26 19:05:16,282 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 [2018-10-26 19:05:16,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2320 states. [2018-10-26 19:05:16,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2320 to 2320. [2018-10-26 19:05:16,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2320 states. [2018-10-26 19:05:16,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2320 states to 2320 states and 3858 transitions. [2018-10-26 19:05:16,456 INFO L78 Accepts]: Start accepts. Automaton has 2320 states and 3858 transitions. Word has length 16 [2018-10-26 19:05:16,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:05:16,457 INFO L481 AbstractCegarLoop]: Abstraction has 2320 states and 3858 transitions. [2018-10-26 19:05:16,457 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:05:16,457 INFO L276 IsEmpty]: Start isEmpty. Operand 2320 states and 3858 transitions. [2018-10-26 19:05:16,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2018-10-26 19:05:16,461 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:05:16,462 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-26 19:05:16,462 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:05:16,462 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:05:16,462 INFO L82 PathProgramCache]: Analyzing trace with hash 451124673, now seen corresponding path program 1 times [2018-10-26 19:05:16,463 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:05:16,463 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:05:16,464 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:05:16,464 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:05:16,464 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:05:16,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:05:16,683 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:05:16,684 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:05:16,684 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 19:05:16,687 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:05:16,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:05:16,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:05:16,687 INFO L87 Difference]: Start difference. First operand 2320 states and 3858 transitions. Second operand 4 states. [2018-10-26 19:05:28,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:05:28,690 INFO L93 Difference]: Finished difference Result 9150 states and 15304 transitions. [2018-10-26 19:05:28,691 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:05:28,691 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 88 [2018-10-26 19:05:28,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:05:28,725 INFO L225 Difference]: With dead ends: 9150 [2018-10-26 19:05:28,726 INFO L226 Difference]: Without dead ends: 6832 [2018-10-26 19:05:28,731 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:05:28,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6832 states. [2018-10-26 19:05:28,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6832 to 6832. [2018-10-26 19:05:28,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6832 states. [2018-10-26 19:05:28,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6832 states to 6832 states and 10758 transitions. [2018-10-26 19:05:28,871 INFO L78 Accepts]: Start accepts. Automaton has 6832 states and 10758 transitions. Word has length 88 [2018-10-26 19:05:28,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:05:28,872 INFO L481 AbstractCegarLoop]: Abstraction has 6832 states and 10758 transitions. [2018-10-26 19:05:28,872 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:05:28,873 INFO L276 IsEmpty]: Start isEmpty. Operand 6832 states and 10758 transitions. [2018-10-26 19:05:28,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2018-10-26 19:05:28,888 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:05:28,889 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-26 19:05:28,889 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:05:28,889 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:05:28,889 INFO L82 PathProgramCache]: Analyzing trace with hash 891171138, now seen corresponding path program 1 times [2018-10-26 19:05:28,890 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:05:28,890 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:05:28,891 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:05:28,891 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:05:28,891 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:05:28,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:05:29,278 WARN L179 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-26 19:05:29,579 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:05:29,579 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:05:29,579 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-26 19:05:29,580 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-26 19:05:29,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-26 19:05:29,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-10-26 19:05:29,580 INFO L87 Difference]: Start difference. First operand 6832 states and 10758 transitions. Second operand 6 states. [2018-10-26 19:05:44,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:05:44,892 INFO L93 Difference]: Finished difference Result 15918 states and 24429 transitions. [2018-10-26 19:05:44,892 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-26 19:05:44,893 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 126 [2018-10-26 19:05:44,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:05:44,935 INFO L225 Difference]: With dead ends: 15918 [2018-10-26 19:05:44,935 INFO L226 Difference]: Without dead ends: 9088 [2018-10-26 19:05:44,945 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2018-10-26 19:05:44,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9088 states. [2018-10-26 19:05:45,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9088 to 9088. [2018-10-26 19:05:45,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9088 states. [2018-10-26 19:05:45,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9088 states to 9088 states and 12919 transitions. [2018-10-26 19:05:45,278 INFO L78 Accepts]: Start accepts. Automaton has 9088 states and 12919 transitions. Word has length 126 [2018-10-26 19:05:45,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:05:45,278 INFO L481 AbstractCegarLoop]: Abstraction has 9088 states and 12919 transitions. [2018-10-26 19:05:45,278 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-26 19:05:45,279 INFO L276 IsEmpty]: Start isEmpty. Operand 9088 states and 12919 transitions. [2018-10-26 19:05:45,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2018-10-26 19:05:45,285 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:05:45,286 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:05:45,286 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:05:45,286 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:05:45,286 INFO L82 PathProgramCache]: Analyzing trace with hash -1169940111, now seen corresponding path program 1 times [2018-10-26 19:05:45,287 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:05:45,287 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:05:45,288 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:05:45,288 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:05:45,288 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:05:45,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:05:45,721 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 93 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:05:45,722 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 19:05:45,722 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 [2018-10-26 19:05:45,731 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:05:45,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:05:45,827 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 19:05:46,043 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 98 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:05:46,064 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 19:05:46,064 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2018-10-26 19:05:46,065 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-26 19:05:46,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-26 19:05:46,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-10-26 19:05:46,066 INFO L87 Difference]: Start difference. First operand 9088 states and 12919 transitions. Second operand 6 states. [2018-10-26 19:05:47,271 WARN L179 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 18 [2018-10-26 19:06:08,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:06:08,684 INFO L93 Difference]: Finished difference Result 43024 states and 63364 transitions. [2018-10-26 19:06:08,684 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-26 19:06:08,684 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 198 [2018-10-26 19:06:08,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:06:08,768 INFO L225 Difference]: With dead ends: 43024 [2018-10-26 19:06:08,768 INFO L226 Difference]: Without dead ends: 32431 [2018-10-26 19:06:08,785 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 199 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2018-10-26 19:06:08,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32431 states. [2018-10-26 19:06:09,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32431 to 15855. [2018-10-26 19:06:09,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15855 states. [2018-10-26 19:06:09,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15855 states to 15855 states and 19326 transitions. [2018-10-26 19:06:09,125 INFO L78 Accepts]: Start accepts. Automaton has 15855 states and 19326 transitions. Word has length 198 [2018-10-26 19:06:09,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:06:09,126 INFO L481 AbstractCegarLoop]: Abstraction has 15855 states and 19326 transitions. [2018-10-26 19:06:09,126 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-26 19:06:09,126 INFO L276 IsEmpty]: Start isEmpty. Operand 15855 states and 19326 transitions. [2018-10-26 19:06:09,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2018-10-26 19:06:09,132 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:06:09,135 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:06:09,135 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:06:09,136 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:06:09,136 INFO L82 PathProgramCache]: Analyzing trace with hash -946468968, now seen corresponding path program 1 times [2018-10-26 19:06:09,136 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:06:09,136 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:06:09,137 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:06:09,137 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:06:09,138 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:06:09,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:06:10,096 WARN L179 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 11 [2018-10-26 19:06:10,397 WARN L179 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 14 [2018-10-26 19:06:10,589 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 28 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:06:10,590 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 19:06:10,590 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 -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 19:06:10,597 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:06:10,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:06:10,678 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 19:06:11,070 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 69 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:06:11,106 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-26 19:06:11,106 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4] total 7 [2018-10-26 19:06:11,107 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-26 19:06:11,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-26 19:06:11,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-10-26 19:06:11,108 INFO L87 Difference]: Start difference. First operand 15855 states and 19326 transitions. Second operand 8 states. [2018-10-26 19:06:33,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:06:33,351 INFO L93 Difference]: Finished difference Result 45996 states and 57716 transitions. [2018-10-26 19:06:33,351 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-26 19:06:33,351 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 272 [2018-10-26 19:06:33,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:06:33,402 INFO L225 Difference]: With dead ends: 45996 [2018-10-26 19:06:33,403 INFO L226 Difference]: Without dead ends: 29390 [2018-10-26 19:06:33,425 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 271 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=62, Invalid=94, Unknown=0, NotChecked=0, Total=156 [2018-10-26 19:06:33,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29390 states. [2018-10-26 19:06:33,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29390 to 26382. [2018-10-26 19:06:33,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26382 states. [2018-10-26 19:06:34,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26382 states to 26382 states and 32561 transitions. [2018-10-26 19:06:34,019 INFO L78 Accepts]: Start accepts. Automaton has 26382 states and 32561 transitions. Word has length 272 [2018-10-26 19:06:34,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:06:34,019 INFO L481 AbstractCegarLoop]: Abstraction has 26382 states and 32561 transitions. [2018-10-26 19:06:34,019 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-26 19:06:34,020 INFO L276 IsEmpty]: Start isEmpty. Operand 26382 states and 32561 transitions. [2018-10-26 19:06:34,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 477 [2018-10-26 19:06:34,044 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:06:34,044 INFO L375 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-26 19:06:34,044 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:06:34,045 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:06:34,045 INFO L82 PathProgramCache]: Analyzing trace with hash 226455178, now seen corresponding path program 1 times [2018-10-26 19:06:34,045 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:06:34,045 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:06:34,046 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:06:34,046 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:06:34,046 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:06:34,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:06:34,565 INFO L134 CoverageAnalysis]: Checked inductivity of 359 backedges. 41 proven. 8 refuted. 0 times theorem prover too weak. 310 trivial. 0 not checked. [2018-10-26 19:06:34,566 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 19:06:34,566 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 19:06:34,576 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:06:34,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:06:34,702 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 19:06:34,885 INFO L134 CoverageAnalysis]: Checked inductivity of 359 backedges. 272 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-10-26 19:06:34,916 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 19:06:34,917 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2018-10-26 19:06:34,918 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:06:34,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:06:34,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:06:34,918 INFO L87 Difference]: Start difference. First operand 26382 states and 32561 transitions. Second operand 4 states. [2018-10-26 19:06:44,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:06:44,845 INFO L93 Difference]: Finished difference Result 82902 states and 105047 transitions. [2018-10-26 19:06:44,845 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:06:44,845 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 476 [2018-10-26 19:06:44,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:06:44,932 INFO L225 Difference]: With dead ends: 82902 [2018-10-26 19:06:44,933 INFO L226 Difference]: Without dead ends: 57274 [2018-10-26 19:06:44,964 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 479 GetRequests, 476 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:06:45,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57274 states. [2018-10-26 19:06:45,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57274 to 38414. [2018-10-26 19:06:45,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38414 states. [2018-10-26 19:06:45,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38414 states to 38414 states and 47317 transitions. [2018-10-26 19:06:45,507 INFO L78 Accepts]: Start accepts. Automaton has 38414 states and 47317 transitions. Word has length 476 [2018-10-26 19:06:45,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:06:45,508 INFO L481 AbstractCegarLoop]: Abstraction has 38414 states and 47317 transitions. [2018-10-26 19:06:45,509 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:06:45,509 INFO L276 IsEmpty]: Start isEmpty. Operand 38414 states and 47317 transitions. [2018-10-26 19:06:45,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 492 [2018-10-26 19:06:45,536 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:06:45,536 INFO L375 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-26 19:06:45,537 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:06:45,537 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:06:45,537 INFO L82 PathProgramCache]: Analyzing trace with hash -67830384, now seen corresponding path program 1 times [2018-10-26 19:06:45,537 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:06:45,537 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:06:45,538 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:06:45,538 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:06:45,539 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:06:45,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:06:45,945 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 272 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-10-26 19:06:45,945 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:06:45,945 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 19:06:45,946 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-26 19:06:45,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-26 19:06:45,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 19:06:45,947 INFO L87 Difference]: Start difference. First operand 38414 states and 47317 transitions. Second operand 3 states. [2018-10-26 19:06:51,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:06:51,047 INFO L93 Difference]: Finished difference Result 100138 states and 124441 transitions. [2018-10-26 19:06:51,047 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 19:06:51,048 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 491 [2018-10-26 19:06:51,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:06:51,114 INFO L225 Difference]: With dead ends: 100138 [2018-10-26 19:06:51,114 INFO L226 Difference]: Without dead ends: 62478 [2018-10-26 19:06:51,145 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 19:06:51,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62478 states. [2018-10-26 19:06:51,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62478 to 62478. [2018-10-26 19:06:51,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62478 states. [2018-10-26 19:06:51,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62478 states to 62478 states and 74387 transitions. [2018-10-26 19:06:51,748 INFO L78 Accepts]: Start accepts. Automaton has 62478 states and 74387 transitions. Word has length 491 [2018-10-26 19:06:51,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:06:51,748 INFO L481 AbstractCegarLoop]: Abstraction has 62478 states and 74387 transitions. [2018-10-26 19:06:51,749 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-26 19:06:51,749 INFO L276 IsEmpty]: Start isEmpty. Operand 62478 states and 74387 transitions. [2018-10-26 19:06:51,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 584 [2018-10-26 19:06:51,783 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:06:51,783 INFO L375 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-26 19:06:51,784 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:06:51,784 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:06:51,784 INFO L82 PathProgramCache]: Analyzing trace with hash 1228015818, now seen corresponding path program 1 times [2018-10-26 19:06:51,784 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:06:51,784 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:06:51,785 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:06:51,785 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:06:51,786 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:06:51,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:06:53,218 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 272 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-10-26 19:06:53,219 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:06:53,219 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 19:06:53,220 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:06:53,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:06:53,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:06:53,220 INFO L87 Difference]: Start difference. First operand 62478 states and 74387 transitions. Second operand 4 states. [2018-10-26 19:07:03,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:07:03,220 INFO L93 Difference]: Finished difference Result 173834 states and 208289 transitions. [2018-10-26 19:07:03,220 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:07:03,221 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 583 [2018-10-26 19:07:03,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:07:03,343 INFO L225 Difference]: With dead ends: 173834 [2018-10-26 19:07:03,343 INFO L226 Difference]: Without dead ends: 112110 [2018-10-26 19:07:03,391 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 [2018-10-26 19:07:03,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112110 states. [2018-10-26 19:07:04,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112110 to 108350. [2018-10-26 19:07:04,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108350 states. [2018-10-26 19:07:04,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108350 states to 108350 states and 123852 transitions. [2018-10-26 19:07:04,820 INFO L78 Accepts]: Start accepts. Automaton has 108350 states and 123852 transitions. Word has length 583 [2018-10-26 19:07:04,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:07:04,821 INFO L481 AbstractCegarLoop]: Abstraction has 108350 states and 123852 transitions. [2018-10-26 19:07:04,821 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:07:04,821 INFO L276 IsEmpty]: Start isEmpty. Operand 108350 states and 123852 transitions. [2018-10-26 19:07:04,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 616 [2018-10-26 19:07:04,848 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:07:04,848 INFO L375 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 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] [2018-10-26 19:07:04,849 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:07:04,849 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:07:04,849 INFO L82 PathProgramCache]: Analyzing trace with hash 1898815770, now seen corresponding path program 1 times [2018-10-26 19:07:04,849 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:07:04,849 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:07:04,850 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:07:04,850 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:07:04,850 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:07:04,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:07:05,379 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2018-10-26 19:07:05,379 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:07:05,379 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 19:07:05,380 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:07:05,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:07:05,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:07:05,380 INFO L87 Difference]: Start difference. First operand 108350 states and 123852 transitions. Second operand 4 states. [2018-10-26 19:07:12,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:07:12,924 INFO L93 Difference]: Finished difference Result 261066 states and 299444 transitions. [2018-10-26 19:07:12,924 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:07:12,924 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 615 [2018-10-26 19:07:12,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:07:13,817 INFO L225 Difference]: With dead ends: 261066 [2018-10-26 19:07:13,817 INFO L226 Difference]: Without dead ends: 153470 [2018-10-26 19:07:13,865 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 6 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:07:13,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153470 states. [2018-10-26 19:07:14,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153470 to 151214. [2018-10-26 19:07:14,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151214 states. [2018-10-26 19:07:14,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151214 states to 151214 states and 168414 transitions. [2018-10-26 19:07:14,943 INFO L78 Accepts]: Start accepts. Automaton has 151214 states and 168414 transitions. Word has length 615 [2018-10-26 19:07:14,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:07:14,944 INFO L481 AbstractCegarLoop]: Abstraction has 151214 states and 168414 transitions. [2018-10-26 19:07:14,944 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:07:14,944 INFO L276 IsEmpty]: Start isEmpty. Operand 151214 states and 168414 transitions. [2018-10-26 19:07:14,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 672 [2018-10-26 19:07:14,988 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:07:14,988 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:07:14,989 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:07:14,989 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:07:14,989 INFO L82 PathProgramCache]: Analyzing trace with hash 631120995, now seen corresponding path program 1 times [2018-10-26 19:07:14,989 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:07:14,989 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:07:14,990 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:07:14,990 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:07:14,990 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:07:15,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:07:15,633 INFO L134 CoverageAnalysis]: Checked inductivity of 644 backedges. 388 proven. 0 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2018-10-26 19:07:15,634 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:07:15,634 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 19:07:15,635 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:07:15,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:07:15,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:07:15,635 INFO L87 Difference]: Start difference. First operand 151214 states and 168414 transitions. Second operand 4 states. [2018-10-26 19:07:24,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:07:24,306 INFO L93 Difference]: Finished difference Result 301674 states and 336069 transitions. [2018-10-26 19:07:24,306 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:07:24,306 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 671 [2018-10-26 19:07:24,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:07:24,448 INFO L225 Difference]: With dead ends: 301674 [2018-10-26 19:07:24,448 INFO L226 Difference]: Without dead ends: 129372 [2018-10-26 19:07:24,523 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:07:24,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129372 states. [2018-10-26 19:07:25,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129372 to 121100. [2018-10-26 19:07:25,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121100 states. [2018-10-26 19:07:25,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121100 states to 121100 states and 129483 transitions. [2018-10-26 19:07:25,552 INFO L78 Accepts]: Start accepts. Automaton has 121100 states and 129483 transitions. Word has length 671 [2018-10-26 19:07:25,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:07:25,552 INFO L481 AbstractCegarLoop]: Abstraction has 121100 states and 129483 transitions. [2018-10-26 19:07:25,552 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:07:25,552 INFO L276 IsEmpty]: Start isEmpty. Operand 121100 states and 129483 transitions. [2018-10-26 19:07:25,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 729 [2018-10-26 19:07:25,581 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:07:25,582 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2018-10-26 19:07:25,582 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:07:25,582 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:07:25,583 INFO L82 PathProgramCache]: Analyzing trace with hash -76188441, now seen corresponding path program 1 times [2018-10-26 19:07:25,583 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:07:25,583 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:07:25,583 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:07:25,584 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:07:25,584 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:07:25,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:07:27,289 INFO L134 CoverageAnalysis]: Checked inductivity of 785 backedges. 672 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2018-10-26 19:07:27,289 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:07:27,289 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 19:07:27,290 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:07:27,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:07:27,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:07:27,290 INFO L87 Difference]: Start difference. First operand 121100 states and 129483 transitions. Second operand 4 states. [2018-10-26 19:07:36,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:07:36,960 INFO L93 Difference]: Finished difference Result 241446 states and 258207 transitions. [2018-10-26 19:07:36,960 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:07:36,960 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 728 [2018-10-26 19:07:36,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:07:37,082 INFO L225 Difference]: With dead ends: 241446 [2018-10-26 19:07:37,082 INFO L226 Difference]: Without dead ends: 114320 [2018-10-26 19:07:37,143 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:07:37,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114320 states. [2018-10-26 19:07:39,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114320 to 107552. [2018-10-26 19:07:39,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107552 states. [2018-10-26 19:07:39,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107552 states to 107552 states and 112906 transitions. [2018-10-26 19:07:39,110 INFO L78 Accepts]: Start accepts. Automaton has 107552 states and 112906 transitions. Word has length 728 [2018-10-26 19:07:39,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:07:39,110 INFO L481 AbstractCegarLoop]: Abstraction has 107552 states and 112906 transitions. [2018-10-26 19:07:39,110 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:07:39,110 INFO L276 IsEmpty]: Start isEmpty. Operand 107552 states and 112906 transitions. [2018-10-26 19:07:39,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 839 [2018-10-26 19:07:39,147 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:07:39,148 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:07:39,148 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:07:39,148 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:07:39,148 INFO L82 PathProgramCache]: Analyzing trace with hash 17237999, now seen corresponding path program 1 times [2018-10-26 19:07:39,149 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:07:39,149 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:07:39,149 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:07:39,150 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:07:39,150 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:07:39,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:07:41,122 INFO L134 CoverageAnalysis]: Checked inductivity of 1179 backedges. 555 proven. 0 refuted. 0 times theorem prover too weak. 624 trivial. 0 not checked. [2018-10-26 19:07:41,122 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:07:41,122 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 19:07:41,123 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-26 19:07:41,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-26 19:07:41,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 19:07:41,123 INFO L87 Difference]: Start difference. First operand 107552 states and 112906 transitions. Second operand 3 states. [2018-10-26 19:07:45,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:07:45,832 INFO L93 Difference]: Finished difference Result 213597 states and 224295 transitions. [2018-10-26 19:07:45,832 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 19:07:45,833 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 838 [2018-10-26 19:07:45,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:07:45,926 INFO L225 Difference]: With dead ends: 213597 [2018-10-26 19:07:45,927 INFO L226 Difference]: Without dead ends: 106799 [2018-10-26 19:07:45,970 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 19:07:46,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106799 states. [2018-10-26 19:07:47,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106799 to 105295. [2018-10-26 19:07:47,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105295 states. [2018-10-26 19:07:48,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105295 states to 105295 states and 109569 transitions. [2018-10-26 19:07:48,051 INFO L78 Accepts]: Start accepts. Automaton has 105295 states and 109569 transitions. Word has length 838 [2018-10-26 19:07:48,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:07:48,052 INFO L481 AbstractCegarLoop]: Abstraction has 105295 states and 109569 transitions. [2018-10-26 19:07:48,052 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-26 19:07:48,052 INFO L276 IsEmpty]: Start isEmpty. Operand 105295 states and 109569 transitions. [2018-10-26 19:07:48,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 985 [2018-10-26 19:07:48,088 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:07:48,088 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:07:48,088 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:07:48,089 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:07:48,089 INFO L82 PathProgramCache]: Analyzing trace with hash 2103748173, now seen corresponding path program 1 times [2018-10-26 19:07:48,089 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:07:48,089 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:07:48,090 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:07:48,090 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:07:48,090 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:07:48,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:07:49,112 WARN L179 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 7 DAG size of output: 5 [2018-10-26 19:07:49,285 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-10-26 19:07:49,623 WARN L179 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 11 [2018-10-26 19:07:52,819 INFO L134 CoverageAnalysis]: Checked inductivity of 872 backedges. 478 proven. 380 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2018-10-26 19:07:52,819 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 19:07:52,819 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 19:07:52,827 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:07:53,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:07:53,083 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 19:07:53,876 WARN L179 SmtUtils]: Spent 413.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 21 Received shutdown request... [2018-10-26 19:08:53,699 WARN L187 SmtUtils]: Removed 19 from assertion stack [2018-10-26 19:08:53,700 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-10-26 19:08:53,901 WARN L522 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 19:08:53,901 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-26 19:08:53,906 WARN L205 ceAbstractionStarter]: Timeout [2018-10-26 19:08:53,907 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 07:08:53 BoogieIcfgContainer [2018-10-26 19:08:53,907 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-26 19:08:53,908 INFO L168 Benchmark]: Toolchain (without parser) took 242139.97 ms. Allocated memory was 1.5 GB in the beginning and 3.4 GB in the end (delta: 1.9 GB). Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 176.6 MB). Peak memory consumption was 2.1 GB. Max. memory is 7.1 GB. [2018-10-26 19:08:53,909 INFO L168 Benchmark]: CDTParser took 0.24 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. [2018-10-26 19:08:53,909 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2111.04 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 203.5 MB). Peak memory consumption was 203.5 MB. Max. memory is 7.1 GB. [2018-10-26 19:08:53,910 INFO L168 Benchmark]: Boogie Procedure Inliner took 649.70 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 812.6 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 58.3 MB. Max. memory is 7.1 GB. [2018-10-26 19:08:53,911 INFO L168 Benchmark]: Boogie Preprocessor took 431.39 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 47.5 MB). Peak memory consumption was 47.5 MB. Max. memory is 7.1 GB. [2018-10-26 19:08:53,912 INFO L168 Benchmark]: RCFGBuilder took 8634.79 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 211.8 MB). Free memory was 2.2 GB in the beginning and 2.3 GB in the end (delta: -150.9 MB). Peak memory consumption was 621.9 MB. Max. memory is 7.1 GB. [2018-10-26 19:08:53,913 INFO L168 Benchmark]: TraceAbstraction took 230307.78 ms. Allocated memory was 2.6 GB in the beginning and 3.4 GB in the end (delta: 873.5 MB). Free memory was 2.3 GB in the beginning and 1.2 GB in the end (delta: 1.1 GB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. [2018-10-26 19:08:53,923 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 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 2111.04 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 203.5 MB). Peak memory consumption was 203.5 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 649.70 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 812.6 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 58.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 431.39 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 47.5 MB). Peak memory consumption was 47.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 8634.79 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 211.8 MB). Free memory was 2.2 GB in the beginning and 2.3 GB in the end (delta: -150.9 MB). Peak memory consumption was 621.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 230307.78 ms. Allocated memory was 2.6 GB in the beginning and 3.4 GB in the end (delta: 873.5 MB). Free memory was 2.3 GB in the beginning and 1.2 GB in the end (delta: 1.1 GB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 57]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 57). Cancelled while BasicCegarLoop was analyzing trace of length 985 with TraceHistMax 5,while TraceCheckSpWp was constructing forward predicates,while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 772. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 819 locations, 1 error locations. TIMEOUT Result, 230.2s OverallTime, 13 OverallIterations, 6 TraceHistogramMax, 142.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 7782 SDtfs, 25326 SDslu, 1355 SDs, 0 SdLazy, 73950 SolverSat, 12620 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 114.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1021 GetRequests, 966 SyntacticMatches, 17 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 3.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=151214occurred in iteration=9, 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: 10.2s AutomataMinimizationTime, 12 MinimizatonAttempts, 61004 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 5.7s InterpolantComputationTime, 6048 NumberOfCodeBlocks, 6048 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 6033 ConstructedInterpolants, 0 QuantifiedInterpolants, 7940239 SizeOfPredicates, 10 NumberOfNonLiveVariables, 1250 ConjunctsInSsa, 20 ConjunctsInUnsatCore, 15 InterpolantComputations, 11 PerfectInterpolantSequences, 4767/4955 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown