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_label37_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 17:07:06,816 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 17:07:06,818 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 17:07:06,830 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 17:07:06,830 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 17:07:06,832 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 17:07:06,833 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 17:07:06,835 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 17:07:06,837 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 17:07:06,838 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 17:07:06,839 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 17:07:06,839 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 17:07:06,840 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 17:07:06,841 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 17:07:06,842 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 17:07:06,843 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 17:07:06,844 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 17:07:06,846 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 17:07:06,848 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 17:07:06,849 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 17:07:06,851 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 17:07:06,852 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 17:07:06,855 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 17:07:06,855 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 17:07:06,855 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 17:07:06,856 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 17:07:06,857 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 17:07:06,858 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 17:07:06,859 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 17:07:06,861 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 17:07:06,861 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 17:07:06,862 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-24 17:07:06,865 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-10-24 17:07:06,894 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 17:07:06,894 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 17:07:06,895 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 17:07:06,895 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-24 17:07:06,896 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-24 17:07:06,898 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-24 17:07:06,898 INFO L133 SettingsManager]: * Use SBE=true [2018-10-24 17:07:06,898 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 17:07:06,898 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 17:07:06,899 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 17:07:06,899 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 17:07:06,899 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 17:07:06,900 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 17:07:06,900 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 17:07:06,900 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 17:07:06,900 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 17:07:06,900 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 17:07:06,900 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 17:07:06,901 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 17:07:06,901 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 17:07:06,901 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 17:07:06,901 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 17:07:06,901 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 17:07:06,902 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-24 17:07:06,903 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 17:07:06,903 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 17:07:06,903 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 17:07:06,904 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 17:07:06,964 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 17:07:06,976 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 17:07:06,980 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 17:07:06,981 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 17:07:06,982 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 17:07:06,983 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label37_true-unreach-call.c [2018-10-24 17:07:07,045 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/675a461ab/46c15fadfb134486b2ee5b848e58b4fd/FLAG6f10c6b81 [2018-10-24 17:07:07,975 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 17:07:07,976 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label37_true-unreach-call.c [2018-10-24 17:07:08,020 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/675a461ab/46c15fadfb134486b2ee5b848e58b4fd/FLAG6f10c6b81 [2018-10-24 17:07:08,035 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/675a461ab/46c15fadfb134486b2ee5b848e58b4fd [2018-10-24 17:07:08,046 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 17:07:08,048 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 17:07:08,049 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 17:07:08,049 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 17:07:08,055 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 17:07:08,056 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 05:07:08" (1/1) ... [2018-10-24 17:07:08,059 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d607cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:07:08, skipping insertion in model container [2018-10-24 17:07:08,059 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 05:07:08" (1/1) ... [2018-10-24 17:07:08,070 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 17:07:08,328 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 17:07:10,311 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 17:07:10,316 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 17:07:11,385 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 17:07:11,446 INFO L193 MainTranslator]: Completed translation [2018-10-24 17:07:11,446 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:07:11 WrapperNode [2018-10-24 17:07:11,447 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 17:07:11,448 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 17:07:11,448 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 17:07:11,448 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 17:07:11,460 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:07:11" (1/1) ... [2018-10-24 17:07:11,554 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:07:11" (1/1) ... [2018-10-24 17:07:12,619 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 17:07:12,620 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 17:07:12,620 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 17:07:12,620 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 17:07:12,632 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:07:11" (1/1) ... [2018-10-24 17:07:12,632 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:07:11" (1/1) ... [2018-10-24 17:07:12,707 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:07:11" (1/1) ... [2018-10-24 17:07:12,707 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:07:11" (1/1) ... [2018-10-24 17:07:12,911 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:07:11" (1/1) ... [2018-10-24 17:07:12,991 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:07:11" (1/1) ... [2018-10-24 17:07:13,096 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:07:11" (1/1) ... [2018-10-24 17:07:13,220 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 17:07:13,221 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 17:07:13,221 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 17:07:13,221 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 17:07:13,222 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:07:11" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 17:07:13,285 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-24 17:07:13,285 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 17:07:13,286 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 17:07:30,616 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 17:07:30,617 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 05:07:30 BoogieIcfgContainer [2018-10-24 17:07:30,617 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 17:07:30,618 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 17:07:30,618 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 17:07:30,621 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 17:07:30,622 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 05:07:08" (1/3) ... [2018-10-24 17:07:30,622 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54e8297f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 05:07:30, skipping insertion in model container [2018-10-24 17:07:30,623 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:07:11" (2/3) ... [2018-10-24 17:07:30,623 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54e8297f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 05:07:30, skipping insertion in model container [2018-10-24 17:07:30,623 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 05:07:30" (3/3) ... [2018-10-24 17:07:30,625 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label37_true-unreach-call.c [2018-10-24 17:07:30,635 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 17:07:30,646 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 17:07:30,663 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 17:07:30,728 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-24 17:07:30,729 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 17:07:30,729 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 17:07:30,729 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 17:07:30,729 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 17:07:30,729 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 17:07:30,730 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 17:07:30,730 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 17:07:30,730 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 17:07:30,784 INFO L276 IsEmpty]: Start isEmpty. Operand 1749 states. [2018-10-24 17:07:30,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-10-24 17:07:30,801 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:07:30,802 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 17:07:30,806 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:07:30,813 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:07:30,813 INFO L82 PathProgramCache]: Analyzing trace with hash 861450858, now seen corresponding path program 1 times [2018-10-24 17:07:30,815 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:07:30,816 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:07:30,874 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:07:30,874 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:07:30,874 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:07:30,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:07:31,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 17:07:31,381 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:07:31,381 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 17:07:31,386 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 17:07:31,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 17:07:31,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:07:31,405 INFO L87 Difference]: Start difference. First operand 1749 states. Second operand 4 states. [2018-10-24 17:07:56,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:07:56,524 INFO L93 Difference]: Finished difference Result 6326 states and 12085 transitions. [2018-10-24 17:07:56,524 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 17:07:56,526 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 39 [2018-10-24 17:07:56,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:07:56,584 INFO L225 Difference]: With dead ends: 6326 [2018-10-24 17:07:56,584 INFO L226 Difference]: Without dead ends: 4570 [2018-10-24 17:07:56,594 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:07:56,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4570 states. [2018-10-24 17:07:56,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4570 to 4564. [2018-10-24 17:07:56,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4564 states. [2018-10-24 17:07:56,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4564 states to 4564 states and 7499 transitions. [2018-10-24 17:07:56,798 INFO L78 Accepts]: Start accepts. Automaton has 4564 states and 7499 transitions. Word has length 39 [2018-10-24 17:07:56,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:07:56,799 INFO L481 AbstractCegarLoop]: Abstraction has 4564 states and 7499 transitions. [2018-10-24 17:07:56,799 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 17:07:56,799 INFO L276 IsEmpty]: Start isEmpty. Operand 4564 states and 7499 transitions. [2018-10-24 17:07:56,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2018-10-24 17:07:56,806 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:07:56,806 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 17:07:56,807 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:07:56,807 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:07:56,807 INFO L82 PathProgramCache]: Analyzing trace with hash 135360988, now seen corresponding path program 1 times [2018-10-24 17:07:56,807 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:07:56,808 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:07:56,809 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:07:56,809 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:07:56,809 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:07:56,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:07:57,221 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 17:07:57,222 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:07:57,222 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 17:07:57,227 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 17:07:57,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 17:07:57,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:07:57,228 INFO L87 Difference]: Start difference. First operand 4564 states and 7499 transitions. Second operand 4 states. [2018-10-24 17:08:26,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:08:26,067 INFO L93 Difference]: Finished difference Result 17552 states and 29056 transitions. [2018-10-24 17:08:26,067 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 17:08:26,067 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 143 [2018-10-24 17:08:26,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:08:26,134 INFO L225 Difference]: With dead ends: 17552 [2018-10-24 17:08:26,134 INFO L226 Difference]: Without dead ends: 12990 [2018-10-24 17:08:26,143 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:08:26,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12990 states. [2018-10-24 17:08:26,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12990 to 8666. [2018-10-24 17:08:26,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8666 states. [2018-10-24 17:08:26,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8666 states to 8666 states and 13862 transitions. [2018-10-24 17:08:26,340 INFO L78 Accepts]: Start accepts. Automaton has 8666 states and 13862 transitions. Word has length 143 [2018-10-24 17:08:26,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:08:26,341 INFO L481 AbstractCegarLoop]: Abstraction has 8666 states and 13862 transitions. [2018-10-24 17:08:26,342 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 17:08:26,342 INFO L276 IsEmpty]: Start isEmpty. Operand 8666 states and 13862 transitions. [2018-10-24 17:08:26,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2018-10-24 17:08:26,344 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:08:26,344 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 17:08:26,344 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:08:26,345 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:08:26,345 INFO L82 PathProgramCache]: Analyzing trace with hash 1896301798, now seen corresponding path program 1 times [2018-10-24 17:08:26,345 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:08:26,345 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:08:26,346 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:08:26,346 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:08:26,346 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:08:26,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:08:26,686 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 17:08:26,686 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:08:26,687 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 17:08:26,687 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 17:08:26,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 17:08:26,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:08:26,688 INFO L87 Difference]: Start difference. First operand 8666 states and 13862 transitions. Second operand 4 states. [2018-10-24 17:08:49,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:08:49,224 INFO L93 Difference]: Finished difference Result 33844 states and 54415 transitions. [2018-10-24 17:08:49,227 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 17:08:49,228 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 147 [2018-10-24 17:08:49,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:08:49,301 INFO L225 Difference]: With dead ends: 33844 [2018-10-24 17:08:49,301 INFO L226 Difference]: Without dead ends: 25180 [2018-10-24 17:08:49,314 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:08:49,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25180 states. [2018-10-24 17:08:49,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25180 to 25142. [2018-10-24 17:08:49,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25142 states. [2018-10-24 17:08:49,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25142 states to 25142 states and 35892 transitions. [2018-10-24 17:08:49,707 INFO L78 Accepts]: Start accepts. Automaton has 25142 states and 35892 transitions. Word has length 147 [2018-10-24 17:08:49,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:08:49,707 INFO L481 AbstractCegarLoop]: Abstraction has 25142 states and 35892 transitions. [2018-10-24 17:08:49,707 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 17:08:49,708 INFO L276 IsEmpty]: Start isEmpty. Operand 25142 states and 35892 transitions. [2018-10-24 17:08:49,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2018-10-24 17:08:49,711 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:08:49,711 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 17:08:49,715 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:08:49,715 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:08:49,716 INFO L82 PathProgramCache]: Analyzing trace with hash 1277374214, now seen corresponding path program 1 times [2018-10-24 17:08:49,716 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:08:49,716 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:08:49,719 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:08:49,720 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:08:49,720 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:08:49,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:08:50,078 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2018-10-24 17:08:50,078 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:08:50,078 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 17:08:50,079 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 17:08:50,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 17:08:50,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:08:50,080 INFO L87 Difference]: Start difference. First operand 25142 states and 35892 transitions. Second operand 4 states. [2018-10-24 17:09:08,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:09:08,737 INFO L93 Difference]: Finished difference Result 98404 states and 140796 transitions. [2018-10-24 17:09:08,738 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 17:09:08,738 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 205 [2018-10-24 17:09:08,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:09:08,868 INFO L225 Difference]: With dead ends: 98404 [2018-10-24 17:09:08,868 INFO L226 Difference]: Without dead ends: 73264 [2018-10-24 17:09:08,911 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:09:08,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73264 states. [2018-10-24 17:09:09,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73264 to 73244. [2018-10-24 17:09:09,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73244 states. [2018-10-24 17:09:09,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73244 states to 73244 states and 91793 transitions. [2018-10-24 17:09:09,841 INFO L78 Accepts]: Start accepts. Automaton has 73244 states and 91793 transitions. Word has length 205 [2018-10-24 17:09:09,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:09:09,841 INFO L481 AbstractCegarLoop]: Abstraction has 73244 states and 91793 transitions. [2018-10-24 17:09:09,842 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 17:09:09,842 INFO L276 IsEmpty]: Start isEmpty. Operand 73244 states and 91793 transitions. [2018-10-24 17:09:09,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 632 [2018-10-24 17:09:09,860 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:09:09,861 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 17:09:09,861 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:09:09,862 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:09:09,862 INFO L82 PathProgramCache]: Analyzing trace with hash -189251644, now seen corresponding path program 1 times [2018-10-24 17:09:09,862 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:09:09,862 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:09:09,863 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:09:09,863 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:09:09,863 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:09:09,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:09:10,436 WARN L179 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-10-24 17:09:10,737 WARN L179 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 18 [2018-10-24 17:09:11,325 WARN L179 SmtUtils]: Spent 511.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 18 [2018-10-24 17:09:12,142 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 337 proven. 0 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2018-10-24 17:09:12,143 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:09:12,143 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 17:09:12,144 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 17:09:12,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 17:09:12,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-24 17:09:12,145 INFO L87 Difference]: Start difference. First operand 73244 states and 91793 transitions. Second operand 7 states. [2018-10-24 17:09:48,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:09:48,165 INFO L93 Difference]: Finished difference Result 172454 states and 210825 transitions. [2018-10-24 17:09:48,166 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 17:09:48,166 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 631 [2018-10-24 17:09:48,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:09:48,350 INFO L225 Difference]: With dead ends: 172454 [2018-10-24 17:09:48,351 INFO L226 Difference]: Without dead ends: 99212 [2018-10-24 17:09:48,406 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2018-10-24 17:09:48,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99212 states. [2018-10-24 17:09:49,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99212 to 95108. [2018-10-24 17:09:49,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95108 states. [2018-10-24 17:09:49,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95108 states to 95108 states and 114314 transitions. [2018-10-24 17:09:49,390 INFO L78 Accepts]: Start accepts. Automaton has 95108 states and 114314 transitions. Word has length 631 [2018-10-24 17:09:49,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:09:49,391 INFO L481 AbstractCegarLoop]: Abstraction has 95108 states and 114314 transitions. [2018-10-24 17:09:49,391 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 17:09:49,391 INFO L276 IsEmpty]: Start isEmpty. Operand 95108 states and 114314 transitions. [2018-10-24 17:09:49,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 660 [2018-10-24 17:09:49,412 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:09:49,413 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 17:09:49,413 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:09:49,413 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:09:49,413 INFO L82 PathProgramCache]: Analyzing trace with hash 1193304938, now seen corresponding path program 1 times [2018-10-24 17:09:49,414 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:09:49,414 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:09:49,415 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:09:49,415 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:09:49,415 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:09:49,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:09:50,524 INFO L134 CoverageAnalysis]: Checked inductivity of 534 backedges. 497 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2018-10-24 17:09:50,525 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:09:50,525 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 17:09:50,526 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 17:09:50,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 17:09:50,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:09:50,527 INFO L87 Difference]: Start difference. First operand 95108 states and 114314 transitions. Second operand 4 states. [2018-10-24 17:10:08,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:10:08,483 INFO L93 Difference]: Finished difference Result 239402 states and 292900 transitions. [2018-10-24 17:10:08,484 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 17:10:08,484 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 659 [2018-10-24 17:10:08,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:10:08,650 INFO L225 Difference]: With dead ends: 239402 [2018-10-24 17:10:08,650 INFO L226 Difference]: Without dead ends: 144296 [2018-10-24 17:10:08,717 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:10:08,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144296 states. [2018-10-24 17:10:09,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144296 to 142919. [2018-10-24 17:10:09,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142919 states. [2018-10-24 17:10:10,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142919 states to 142919 states and 167348 transitions. [2018-10-24 17:10:10,027 INFO L78 Accepts]: Start accepts. Automaton has 142919 states and 167348 transitions. Word has length 659 [2018-10-24 17:10:10,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:10:10,028 INFO L481 AbstractCegarLoop]: Abstraction has 142919 states and 167348 transitions. [2018-10-24 17:10:10,028 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 17:10:10,028 INFO L276 IsEmpty]: Start isEmpty. Operand 142919 states and 167348 transitions. [2018-10-24 17:10:10,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 895 [2018-10-24 17:10:10,066 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:10:10,067 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2018-10-24 17:10:10,067 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:10:10,067 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:10:10,068 INFO L82 PathProgramCache]: Analyzing trace with hash -1629305439, now seen corresponding path program 1 times [2018-10-24 17:10:10,068 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:10:10,068 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:10:10,069 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:10:10,069 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:10:10,069 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:10:10,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:10:11,742 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 242 proven. 0 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2018-10-24 17:10:11,743 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:10:11,743 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 17:10:11,744 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 17:10:11,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 17:10:11,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:10:11,745 INFO L87 Difference]: Start difference. First operand 142919 states and 167348 transitions. Second operand 4 states. [2018-10-24 17:10:28,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:10:28,962 INFO L93 Difference]: Finished difference Result 285839 states and 334703 transitions. [2018-10-24 17:10:28,966 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 17:10:28,966 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 894 [2018-10-24 17:10:28,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:10:29,119 INFO L225 Difference]: With dead ends: 285839 [2018-10-24 17:10:29,120 INFO L226 Difference]: Without dead ends: 142922 [2018-10-24 17:10:29,175 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:10:29,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142922 states. [2018-10-24 17:10:30,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142922 to 131983. [2018-10-24 17:10:30,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131983 states. [2018-10-24 17:10:30,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131983 states to 131983 states and 147276 transitions. [2018-10-24 17:10:30,341 INFO L78 Accepts]: Start accepts. Automaton has 131983 states and 147276 transitions. Word has length 894 [2018-10-24 17:10:30,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:10:30,342 INFO L481 AbstractCegarLoop]: Abstraction has 131983 states and 147276 transitions. [2018-10-24 17:10:30,342 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 17:10:30,342 INFO L276 IsEmpty]: Start isEmpty. Operand 131983 states and 147276 transitions. [2018-10-24 17:10:30,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1027 [2018-10-24 17:10:30,360 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:10:30,361 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 17:10:30,361 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:10:30,361 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:10:30,361 INFO L82 PathProgramCache]: Analyzing trace with hash 281291200, now seen corresponding path program 1 times [2018-10-24 17:10:30,362 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:10:30,362 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:10:30,363 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:10:30,363 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:10:30,363 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:10:30,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:10:32,003 INFO L134 CoverageAnalysis]: Checked inductivity of 914 backedges. 344 proven. 0 refuted. 0 times theorem prover too weak. 570 trivial. 0 not checked. [2018-10-24 17:10:32,004 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:10:32,004 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 17:10:32,005 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 17:10:32,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 17:10:32,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:10:32,006 INFO L87 Difference]: Start difference. First operand 131983 states and 147276 transitions. Second operand 4 states. [2018-10-24 17:10:53,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:10:53,116 INFO L93 Difference]: Finished difference Result 455390 states and 509142 transitions. [2018-10-24 17:10:53,117 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 17:10:53,117 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1026 [2018-10-24 17:10:53,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:10:53,473 INFO L225 Difference]: With dead ends: 455390 [2018-10-24 17:10:53,473 INFO L226 Difference]: Without dead ends: 323409 [2018-10-24 17:10:53,576 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 [2018-10-24 17:10:53,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323409 states. [2018-10-24 17:10:56,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323409 to 319142. [2018-10-24 17:10:56,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 319142 states. [2018-10-24 17:10:56,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319142 states to 319142 states and 348811 transitions. [2018-10-24 17:10:56,986 INFO L78 Accepts]: Start accepts. Automaton has 319142 states and 348811 transitions. Word has length 1026 [2018-10-24 17:10:56,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:10:56,988 INFO L481 AbstractCegarLoop]: Abstraction has 319142 states and 348811 transitions. [2018-10-24 17:10:56,988 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 17:10:56,988 INFO L276 IsEmpty]: Start isEmpty. Operand 319142 states and 348811 transitions. [2018-10-24 17:10:57,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1080 [2018-10-24 17:10:57,014 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:10:57,015 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-24 17:10:57,015 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:10:57,015 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:10:57,016 INFO L82 PathProgramCache]: Analyzing trace with hash -1586621396, now seen corresponding path program 1 times [2018-10-24 17:10:57,016 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:10:57,016 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:10:57,017 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:10:57,017 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:10:57,017 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:10:57,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:10:59,534 INFO L134 CoverageAnalysis]: Checked inductivity of 922 backedges. 616 proven. 0 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2018-10-24 17:10:59,535 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:10:59,535 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 17:10:59,536 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 17:10:59,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 17:10:59,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:10:59,536 INFO L87 Difference]: Start difference. First operand 319142 states and 348811 transitions. Second operand 4 states. Received shutdown request... [2018-10-24 17:11:08,429 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 17:11:08,429 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 17:11:08,435 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 17:11:08,435 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 05:11:08 BoogieIcfgContainer [2018-10-24 17:11:08,436 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 17:11:08,436 INFO L168 Benchmark]: Toolchain (without parser) took 240389.61 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 1.5 GB in the end (delta: -144.9 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. [2018-10-24 17:11:08,438 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 17:11:08,438 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3398.11 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: 382.2 MB). Peak memory consumption was 382.2 MB. Max. memory is 7.1 GB. [2018-10-24 17:11:08,439 INFO L168 Benchmark]: Boogie Procedure Inliner took 1171.65 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 876.1 MB). Free memory was 1.0 GB in the beginning and 2.2 GB in the end (delta: -1.2 GB). Peak memory consumption was 117.2 MB. Max. memory is 7.1 GB. [2018-10-24 17:11:08,440 INFO L168 Benchmark]: Boogie Preprocessor took 600.60 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 98.2 MB). Peak memory consumption was 98.2 MB. Max. memory is 7.1 GB. [2018-10-24 17:11:08,441 INFO L168 Benchmark]: RCFGBuilder took 17396.56 ms. Allocated memory was 2.4 GB in the beginning and 2.7 GB in the end (delta: 288.4 MB). Free memory was 2.1 GB in the beginning and 2.5 GB in the end (delta: -391.9 MB). Peak memory consumption was 830.0 MB. Max. memory is 7.1 GB. [2018-10-24 17:11:08,442 INFO L168 Benchmark]: TraceAbstraction took 217817.80 ms. Allocated memory was 2.7 GB in the beginning and 3.4 GB in the end (delta: 698.9 MB). Free memory was 2.5 GB in the beginning and 1.5 GB in the end (delta: 927.3 MB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. [2018-10-24 17:11:08,448 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 3398.11 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: 382.2 MB). Peak memory consumption was 382.2 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 1171.65 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 876.1 MB). Free memory was 1.0 GB in the beginning and 2.2 GB in the end (delta: -1.2 GB). Peak memory consumption was 117.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 600.60 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 98.2 MB). Peak memory consumption was 98.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 17396.56 ms. Allocated memory was 2.4 GB in the beginning and 2.7 GB in the end (delta: 288.4 MB). Free memory was 2.1 GB in the beginning and 2.5 GB in the end (delta: -391.9 MB). Peak memory consumption was 830.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 217817.80 ms. Allocated memory was 2.7 GB in the beginning and 3.4 GB in the end (delta: 698.9 MB). Free memory was 2.5 GB in the beginning and 1.5 GB in the end (delta: 927.3 MB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 130]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 130). Cancelled while BasicCegarLoop was constructing difference of abstraction (319142states) and FLOYD_HOARE automaton (currently 4 states, 4 states before enhancement),while ReachableStatesComputation was computing reachable states (93661 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1749 locations, 1 error locations. TIMEOUT Result, 217.7s OverallTime, 9 OverallIterations, 5 TraceHistogramMax, 197.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 11706 SDtfs, 33559 SDslu, 3749 SDs, 0 SdLazy, 88007 SolverSat, 18977 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 166.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 45 GetRequests, 15 SyntacticMatches, 6 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 2.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=319142occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 8.5s AutomataMinimizationTime, 8 MinimizatonAttempts, 25075 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 5.3s InterpolantComputationTime, 4823 NumberOfCodeBlocks, 4823 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 4814 ConstructedInterpolants, 0 QuantifiedInterpolants, 7197376 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 3634/3634 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown