java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-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_label02_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-06 21:56:00,098 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-06 21:56:00,101 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-06 21:56:00,119 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-06 21:56:00,120 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-06 21:56:00,121 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-06 21:56:00,122 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-06 21:56:00,125 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-06 21:56:00,127 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-06 21:56:00,128 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-06 21:56:00,129 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-06 21:56:00,129 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-06 21:56:00,130 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-06 21:56:00,131 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-06 21:56:00,132 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-06 21:56:00,133 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-06 21:56:00,134 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-06 21:56:00,137 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-06 21:56:00,139 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-06 21:56:00,144 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-06 21:56:00,145 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-06 21:56:00,147 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-06 21:56:00,151 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-11-06 21:56:00,163 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-11-06 21:56:00,190 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-06 21:56:00,190 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-06 21:56:00,191 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-06 21:56:00,191 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-06 21:56:00,192 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-06 21:56:00,192 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-06 21:56:00,192 INFO L133 SettingsManager]: * Use SBE=true [2018-11-06 21:56:00,192 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-06 21:56:00,192 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-06 21:56:00,193 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-06 21:56:00,193 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-06 21:56:00,193 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-06 21:56:00,193 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-06 21:56:00,193 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-06 21:56:00,194 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-06 21:56:00,194 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-06 21:56:00,194 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-06 21:56:00,194 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-06 21:56:00,194 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-06 21:56:00,195 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-06 21:56:00,195 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-06 21:56:00,195 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-06 21:56:00,195 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-06 21:56:00,195 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-06 21:56:00,196 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-06 21:56:00,196 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-06 21:56:00,196 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-06 21:56:00,196 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-06 21:56:00,255 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-06 21:56:00,268 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-06 21:56:00,274 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-06 21:56:00,276 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-06 21:56:00,276 INFO L276 PluginConnector]: CDTParser initialized [2018-11-06 21:56:00,277 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label02_true-unreach-call.c [2018-11-06 21:56:00,348 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0cf7d1883/0e1c390c5a5342ae8e5d3c8f28786f4c/FLAG7ebc3ee39 [2018-11-06 21:56:01,269 INFO L298 CDTParser]: Found 1 translation units. [2018-11-06 21:56:01,270 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label02_true-unreach-call.c [2018-11-06 21:56:01,317 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0cf7d1883/0e1c390c5a5342ae8e5d3c8f28786f4c/FLAG7ebc3ee39 [2018-11-06 21:56:01,333 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0cf7d1883/0e1c390c5a5342ae8e5d3c8f28786f4c [2018-11-06 21:56:01,345 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-06 21:56:01,347 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-06 21:56:01,348 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-06 21:56:01,348 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-06 21:56:01,353 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-06 21:56:01,354 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:56:01" (1/1) ... [2018-11-06 21:56:01,357 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79c37f2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:56:01, skipping insertion in model container [2018-11-06 21:56:01,358 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:56:01" (1/1) ... [2018-11-06 21:56:01,369 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-06 21:56:01,601 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-06 21:56:03,653 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-06 21:56:03,657 INFO L189 MainTranslator]: Completed pre-run [2018-11-06 21:56:04,781 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-06 21:56:04,836 INFO L193 MainTranslator]: Completed translation [2018-11-06 21:56:04,837 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:56:04 WrapperNode [2018-11-06 21:56:04,837 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-06 21:56:04,838 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-06 21:56:04,838 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-06 21:56:04,838 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-06 21:56:04,850 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:56:04" (1/1) ... [2018-11-06 21:56:05,369 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:56:04" (1/1) ... [2018-11-06 21:56:06,010 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-06 21:56:06,011 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-06 21:56:06,011 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-06 21:56:06,011 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-06 21:56:06,024 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:56:04" (1/1) ... [2018-11-06 21:56:06,025 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:56:04" (1/1) ... [2018-11-06 21:56:06,104 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:56:04" (1/1) ... [2018-11-06 21:56:06,104 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:56:04" (1/1) ... [2018-11-06 21:56:06,442 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:56:04" (1/1) ... [2018-11-06 21:56:06,505 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:56:04" (1/1) ... [2018-11-06 21:56:06,637 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:56:04" (1/1) ... [2018-11-06 21:56:06,776 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-06 21:56:06,776 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-06 21:56:06,777 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-06 21:56:06,777 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-06 21:56:06,778 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:56:04" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-11-06 21:56:06,844 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-06 21:56:06,844 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-06 21:56:06,844 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-06 21:56:22,702 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-06 21:56:22,703 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:56:22 BoogieIcfgContainer [2018-11-06 21:56:22,703 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-06 21:56:22,704 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-06 21:56:22,704 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-06 21:56:22,707 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-06 21:56:22,708 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:56:01" (1/3) ... [2018-11-06 21:56:22,708 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25ea77f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:56:22, skipping insertion in model container [2018-11-06 21:56:22,709 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:56:04" (2/3) ... [2018-11-06 21:56:22,709 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25ea77f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:56:22, skipping insertion in model container [2018-11-06 21:56:22,711 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:56:22" (3/3) ... [2018-11-06 21:56:22,713 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label02_true-unreach-call.c [2018-11-06 21:56:22,724 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-06 21:56:22,737 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-06 21:56:22,757 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-06 21:56:22,812 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-06 21:56:22,813 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-06 21:56:22,813 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-06 21:56:22,813 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-06 21:56:22,813 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-06 21:56:22,814 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-06 21:56:22,814 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-06 21:56:22,814 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-06 21:56:22,814 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-06 21:56:22,870 INFO L276 IsEmpty]: Start isEmpty. Operand 1749 states. [2018-11-06 21:56:22,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2018-11-06 21:56:22,886 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:56:22,889 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 21:56:22,892 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:56:22,899 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:56:22,899 INFO L82 PathProgramCache]: Analyzing trace with hash -757100326, now seen corresponding path program 1 times [2018-11-06 21:56:22,901 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:56:22,901 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:56:22,951 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:56:22,951 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:56:22,951 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:56:23,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:56:23,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 21:56:23,569 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:56:23,570 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 21:56:23,576 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 21:56:23,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 21:56:23,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:56:23,596 INFO L87 Difference]: Start difference. First operand 1749 states. Second operand 4 states. [2018-11-06 21:56:43,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:56:43,829 INFO L93 Difference]: Finished difference Result 6419 states and 12268 transitions. [2018-11-06 21:56:43,830 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 21:56:43,832 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 67 [2018-11-06 21:56:43,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:56:43,893 INFO L225 Difference]: With dead ends: 6419 [2018-11-06 21:56:43,894 INFO L226 Difference]: Without dead ends: 4663 [2018-11-06 21:56:43,902 INFO L604 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 [2018-11-06 21:56:43,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4663 states. [2018-11-06 21:56:44,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4663 to 4573. [2018-11-06 21:56:44,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4573 states. [2018-11-06 21:56:44,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4573 states to 4573 states and 7863 transitions. [2018-11-06 21:56:44,130 INFO L78 Accepts]: Start accepts. Automaton has 4573 states and 7863 transitions. Word has length 67 [2018-11-06 21:56:44,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:56:44,131 INFO L480 AbstractCegarLoop]: Abstraction has 4573 states and 7863 transitions. [2018-11-06 21:56:44,131 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 21:56:44,131 INFO L276 IsEmpty]: Start isEmpty. Operand 4573 states and 7863 transitions. [2018-11-06 21:56:44,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2018-11-06 21:56:44,145 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:56:44,146 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-06 21:56:44,146 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:56:44,148 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:56:44,148 INFO L82 PathProgramCache]: Analyzing trace with hash 297182960, now seen corresponding path program 1 times [2018-11-06 21:56:44,148 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:56:44,149 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:56:44,150 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:56:44,150 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:56:44,150 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:56:44,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:56:44,576 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 21:56:44,576 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:56:44,576 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 21:56:44,579 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 21:56:44,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 21:56:44,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:56:44,580 INFO L87 Difference]: Start difference. First operand 4573 states and 7863 transitions. Second operand 4 states. [2018-11-06 21:57:07,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:57:07,683 INFO L93 Difference]: Finished difference Result 17564 states and 30487 transitions. [2018-11-06 21:57:07,683 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 21:57:07,684 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 151 [2018-11-06 21:57:07,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:57:07,751 INFO L225 Difference]: With dead ends: 17564 [2018-11-06 21:57:07,752 INFO L226 Difference]: Without dead ends: 12993 [2018-11-06 21:57:07,760 INFO L604 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 [2018-11-06 21:57:07,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12993 states. [2018-11-06 21:57:07,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12993 to 8672. [2018-11-06 21:57:07,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8672 states. [2018-11-06 21:57:07,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8672 states to 8672 states and 14512 transitions. [2018-11-06 21:57:07,940 INFO L78 Accepts]: Start accepts. Automaton has 8672 states and 14512 transitions. Word has length 151 [2018-11-06 21:57:07,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:57:07,941 INFO L480 AbstractCegarLoop]: Abstraction has 8672 states and 14512 transitions. [2018-11-06 21:57:07,941 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 21:57:07,941 INFO L276 IsEmpty]: Start isEmpty. Operand 8672 states and 14512 transitions. [2018-11-06 21:57:07,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2018-11-06 21:57:07,944 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:57:07,945 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-06 21:57:07,945 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:57:07,945 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:57:07,945 INFO L82 PathProgramCache]: Analyzing trace with hash -1159514843, now seen corresponding path program 1 times [2018-11-06 21:57:07,946 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:57:07,946 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:57:07,947 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:57:07,947 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:57:07,947 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:57:07,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:57:08,191 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 21:57:08,191 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:57:08,192 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 21:57:08,192 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 21:57:08,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 21:57:08,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:57:08,193 INFO L87 Difference]: Start difference. First operand 8672 states and 14512 transitions. Second operand 4 states. [2018-11-06 21:57:24,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:57:24,244 INFO L93 Difference]: Finished difference Result 34022 states and 57203 transitions. [2018-11-06 21:57:24,245 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 21:57:24,246 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 191 [2018-11-06 21:57:24,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:57:24,319 INFO L225 Difference]: With dead ends: 34022 [2018-11-06 21:57:24,319 INFO L226 Difference]: Without dead ends: 25352 [2018-11-06 21:57:24,332 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:57:24,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25352 states. [2018-11-06 21:57:24,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25352 to 25338. [2018-11-06 21:57:24,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25338 states. [2018-11-06 21:57:24,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25338 states to 25338 states and 36988 transitions. [2018-11-06 21:57:24,707 INFO L78 Accepts]: Start accepts. Automaton has 25338 states and 36988 transitions. Word has length 191 [2018-11-06 21:57:24,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:57:24,707 INFO L480 AbstractCegarLoop]: Abstraction has 25338 states and 36988 transitions. [2018-11-06 21:57:24,708 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 21:57:24,708 INFO L276 IsEmpty]: Start isEmpty. Operand 25338 states and 36988 transitions. [2018-11-06 21:57:24,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 376 [2018-11-06 21:57:24,713 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:57:24,714 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 21:57:24,714 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:57:24,714 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:57:24,715 INFO L82 PathProgramCache]: Analyzing trace with hash -1089657292, now seen corresponding path program 1 times [2018-11-06 21:57:24,715 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:57:24,715 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:57:24,716 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:57:24,716 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:57:24,716 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:57:24,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:57:25,101 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 7 DAG size of output: 4 [2018-11-06 21:57:25,282 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 231 proven. 0 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked. [2018-11-06 21:57:25,282 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:57:25,282 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 21:57:25,284 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 21:57:25,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 21:57:25,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:57:25,285 INFO L87 Difference]: Start difference. First operand 25338 states and 36988 transitions. Second operand 4 states. [2018-11-06 21:57:40,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:57:40,620 INFO L93 Difference]: Finished difference Result 93031 states and 135352 transitions. [2018-11-06 21:57:40,621 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 21:57:40,621 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 375 [2018-11-06 21:57:40,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:57:40,794 INFO L225 Difference]: With dead ends: 93031 [2018-11-06 21:57:40,794 INFO L226 Difference]: Without dead ends: 67695 [2018-11-06 21:57:40,836 INFO L604 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 [2018-11-06 21:57:40,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67695 states. [2018-11-06 21:57:41,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67695 to 64956. [2018-11-06 21:57:41,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64956 states. [2018-11-06 21:57:41,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64956 states to 64956 states and 86129 transitions. [2018-11-06 21:57:41,724 INFO L78 Accepts]: Start accepts. Automaton has 64956 states and 86129 transitions. Word has length 375 [2018-11-06 21:57:41,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:57:41,725 INFO L480 AbstractCegarLoop]: Abstraction has 64956 states and 86129 transitions. [2018-11-06 21:57:41,725 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 21:57:41,725 INFO L276 IsEmpty]: Start isEmpty. Operand 64956 states and 86129 transitions. [2018-11-06 21:57:41,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 477 [2018-11-06 21:57:41,738 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:57:41,739 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 21:57:41,739 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:57:41,739 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:57:41,739 INFO L82 PathProgramCache]: Analyzing trace with hash 864219911, now seen corresponding path program 1 times [2018-11-06 21:57:41,739 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:57:41,740 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:57:41,741 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:57:41,741 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:57:41,741 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:57:41,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:57:42,910 INFO L134 CoverageAnalysis]: Checked inductivity of 456 backedges. 240 proven. 0 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2018-11-06 21:57:42,911 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:57:42,911 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 21:57:42,912 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 21:57:42,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 21:57:42,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:57:42,913 INFO L87 Difference]: Start difference. First operand 64956 states and 86129 transitions. Second operand 4 states. [2018-11-06 21:57:59,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:57:59,162 INFO L93 Difference]: Finished difference Result 235259 states and 309485 transitions. [2018-11-06 21:57:59,162 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 21:57:59,162 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 476 [2018-11-06 21:57:59,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:57:59,392 INFO L225 Difference]: With dead ends: 235259 [2018-11-06 21:57:59,392 INFO L226 Difference]: Without dead ends: 170305 [2018-11-06 21:57:59,456 INFO L604 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 [2018-11-06 21:57:59,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170305 states. [2018-11-06 21:58:01,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170305 to 168871. [2018-11-06 21:58:01,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168871 states. [2018-11-06 21:58:01,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168871 states to 168871 states and 202431 transitions. [2018-11-06 21:58:01,510 INFO L78 Accepts]: Start accepts. Automaton has 168871 states and 202431 transitions. Word has length 476 [2018-11-06 21:58:01,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:58:01,511 INFO L480 AbstractCegarLoop]: Abstraction has 168871 states and 202431 transitions. [2018-11-06 21:58:01,511 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 21:58:01,511 INFO L276 IsEmpty]: Start isEmpty. Operand 168871 states and 202431 transitions. [2018-11-06 21:58:01,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 947 [2018-11-06 21:58:01,554 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:58:01,555 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-06 21:58:01,555 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:58:01,556 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:58:01,556 INFO L82 PathProgramCache]: Analyzing trace with hash 1340282011, now seen corresponding path program 1 times [2018-11-06 21:58:01,556 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:58:01,557 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:58:01,557 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:58:01,558 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:58:01,558 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:58:01,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:58:03,571 INFO L134 CoverageAnalysis]: Checked inductivity of 666 backedges. 194 proven. 0 refuted. 0 times theorem prover too weak. 472 trivial. 0 not checked. [2018-11-06 21:58:03,571 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:58:03,572 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 21:58:03,573 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 21:58:03,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 21:58:03,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:58:03,574 INFO L87 Difference]: Start difference. First operand 168871 states and 202431 transitions. Second operand 4 states. [2018-11-06 21:58:22,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:58:22,626 INFO L93 Difference]: Finished difference Result 430683 states and 522687 transitions. [2018-11-06 21:58:22,627 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 21:58:22,627 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 946 [2018-11-06 21:58:22,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:58:22,997 INFO L225 Difference]: With dead ends: 430683 [2018-11-06 21:58:22,997 INFO L226 Difference]: Without dead ends: 263180 [2018-11-06 21:58:23,109 INFO L604 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 [2018-11-06 21:58:23,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263180 states. [2018-11-06 21:58:26,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263180 to 231736. [2018-11-06 21:58:26,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231736 states. [2018-11-06 21:58:26,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231736 states to 231736 states and 273447 transitions. [2018-11-06 21:58:26,605 INFO L78 Accepts]: Start accepts. Automaton has 231736 states and 273447 transitions. Word has length 946 [2018-11-06 21:58:26,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:58:26,606 INFO L480 AbstractCegarLoop]: Abstraction has 231736 states and 273447 transitions. [2018-11-06 21:58:26,606 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 21:58:26,606 INFO L276 IsEmpty]: Start isEmpty. Operand 231736 states and 273447 transitions. [2018-11-06 21:58:26,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 956 [2018-11-06 21:58:26,656 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:58:26,657 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-06 21:58:26,658 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:58:26,658 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:58:26,658 INFO L82 PathProgramCache]: Analyzing trace with hash -329799909, now seen corresponding path program 1 times [2018-11-06 21:58:26,659 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:58:26,659 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:58:26,660 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:58:26,660 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:58:26,660 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:58:26,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:58:27,949 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 378 proven. 0 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2018-11-06 21:58:27,950 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:58:27,950 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 21:58:27,951 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 21:58:27,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 21:58:27,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:58:27,952 INFO L87 Difference]: Start difference. First operand 231736 states and 273447 transitions. Second operand 4 states. [2018-11-06 21:58:44,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:58:44,371 INFO L93 Difference]: Finished difference Result 460733 states and 543839 transitions. [2018-11-06 21:58:44,372 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 21:58:44,372 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 955 [2018-11-06 21:58:44,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:58:44,679 INFO L225 Difference]: With dead ends: 460733 [2018-11-06 21:58:44,679 INFO L226 Difference]: Without dead ends: 230365 [2018-11-06 21:58:44,781 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:58:44,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230365 states. [2018-11-06 21:58:46,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230365 to 219424. [2018-11-06 21:58:46,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219424 states. [2018-11-06 21:58:46,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219424 states to 219424 states and 242045 transitions. [2018-11-06 21:58:48,735 INFO L78 Accepts]: Start accepts. Automaton has 219424 states and 242045 transitions. Word has length 955 [2018-11-06 21:58:48,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:58:48,737 INFO L480 AbstractCegarLoop]: Abstraction has 219424 states and 242045 transitions. [2018-11-06 21:58:48,737 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 21:58:48,737 INFO L276 IsEmpty]: Start isEmpty. Operand 219424 states and 242045 transitions. [2018-11-06 21:58:48,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1087 [2018-11-06 21:58:48,764 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:58:48,765 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 21:58:48,765 INFO L423 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:58:48,765 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:58:48,766 INFO L82 PathProgramCache]: Analyzing trace with hash 1282144835, now seen corresponding path program 1 times [2018-11-06 21:58:48,766 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:58:48,766 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:58:48,768 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:58:48,768 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:58:48,768 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:58:48,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:58:49,253 WARN L179 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-11-06 21:58:51,508 INFO L134 CoverageAnalysis]: Checked inductivity of 788 backedges. 464 proven. 0 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2018-11-06 21:58:51,508 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:58:51,509 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-06 21:58:51,510 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-06 21:58:51,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-06 21:58:51,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-11-06 21:58:51,511 INFO L87 Difference]: Start difference. First operand 219424 states and 242045 transitions. Second operand 7 states. [2018-11-06 21:59:22,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:59:22,994 INFO L93 Difference]: Finished difference Result 477105 states and 524352 transitions. [2018-11-06 21:59:22,995 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-06 21:59:22,995 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1086 [2018-11-06 21:59:22,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:59:23,317 INFO L225 Difference]: With dead ends: 477105 [2018-11-06 21:59:23,317 INFO L226 Difference]: Without dead ends: 259049 [2018-11-06 21:59:23,410 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2018-11-06 21:59:23,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259049 states. [2018-11-06 21:59:26,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259049 to 254945. [2018-11-06 21:59:26,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254945 states. [2018-11-06 21:59:27,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254945 states to 254945 states and 278301 transitions. [2018-11-06 21:59:27,082 INFO L78 Accepts]: Start accepts. Automaton has 254945 states and 278301 transitions. Word has length 1086 [2018-11-06 21:59:27,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:59:27,083 INFO L480 AbstractCegarLoop]: Abstraction has 254945 states and 278301 transitions. [2018-11-06 21:59:27,083 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-06 21:59:27,083 INFO L276 IsEmpty]: Start isEmpty. Operand 254945 states and 278301 transitions. [2018-11-06 21:59:27,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1115 [2018-11-06 21:59:27,102 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:59:27,103 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 21:59:27,103 INFO L423 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:59:27,104 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:59:27,104 INFO L82 PathProgramCache]: Analyzing trace with hash -838025251, now seen corresponding path program 1 times [2018-11-06 21:59:27,104 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:59:27,104 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:59:27,106 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:59:27,106 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:59:27,106 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:59:27,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:59:28,011 WARN L179 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 15 [2018-11-06 21:59:30,486 INFO L134 CoverageAnalysis]: Checked inductivity of 816 backedges. 542 proven. 4 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2018-11-06 21:59:30,486 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 21:59:30,487 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-11-06 21:59:30,500 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:59:30,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:59:30,875 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 21:59:31,919 INFO L134 CoverageAnalysis]: Checked inductivity of 816 backedges. 546 proven. 0 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2018-11-06 21:59:31,941 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 21:59:31,941 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2018-11-06 21:59:31,945 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-06 21:59:31,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-06 21:59:31,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-06 21:59:31,946 INFO L87 Difference]: Start difference. First operand 254945 states and 278301 transitions. Second operand 5 states. Received shutdown request... [2018-11-06 21:59:41,609 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-06 21:59:41,610 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-06 21:59:41,616 WARN L205 ceAbstractionStarter]: Timeout [2018-11-06 21:59:41,616 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 09:59:41 BoogieIcfgContainer [2018-11-06 21:59:41,616 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-06 21:59:41,617 INFO L168 Benchmark]: Toolchain (without parser) took 220271.13 ms. Allocated memory was 1.5 GB in the beginning and 4.4 GB in the end (delta: 2.9 GB). Free memory was 1.4 GB in the beginning and 3.2 GB in the end (delta: -1.8 GB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2018-11-06 21:59:41,618 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-06 21:59:41,619 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3489.43 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 991.2 MB in the end (delta: 401.6 MB). Peak memory consumption was 401.6 MB. Max. memory is 7.1 GB. [2018-11-06 21:59:41,620 INFO L168 Benchmark]: Boogie Procedure Inliner took 1172.02 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 853.0 MB). Free memory was 991.2 MB in the beginning and 2.1 GB in the end (delta: -1.1 GB). Peak memory consumption was 98.9 MB. Max. memory is 7.1 GB. [2018-11-06 21:59:41,621 INFO L168 Benchmark]: Boogie Preprocessor took 765.50 ms. Allocated memory is still 2.4 GB. Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 98.6 MB). Peak memory consumption was 98.6 MB. Max. memory is 7.1 GB. [2018-11-06 21:59:41,622 INFO L168 Benchmark]: RCFGBuilder took 15926.72 ms. Allocated memory was 2.4 GB in the beginning and 2.7 GB in the end (delta: 295.2 MB). Free memory was 2.0 GB in the beginning and 2.4 GB in the end (delta: -382.9 MB). Peak memory consumption was 833.9 MB. Max. memory is 7.1 GB. [2018-11-06 21:59:41,623 INFO L168 Benchmark]: TraceAbstraction took 198912.38 ms. Allocated memory was 2.7 GB in the beginning and 4.4 GB in the end (delta: 1.8 GB). Free memory was 2.4 GB in the beginning and 3.2 GB in the end (delta: -777.8 MB). Peak memory consumption was 994.8 MB. Max. memory is 7.1 GB. [2018-11-06 21:59:41,628 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 3489.43 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 991.2 MB in the end (delta: 401.6 MB). Peak memory consumption was 401.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 1172.02 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 853.0 MB). Free memory was 991.2 MB in the beginning and 2.1 GB in the end (delta: -1.1 GB). Peak memory consumption was 98.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 765.50 ms. Allocated memory is still 2.4 GB. Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 98.6 MB). Peak memory consumption was 98.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 15926.72 ms. Allocated memory was 2.4 GB in the beginning and 2.7 GB in the end (delta: 295.2 MB). Free memory was 2.0 GB in the beginning and 2.4 GB in the end (delta: -382.9 MB). Peak memory consumption was 833.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 198912.38 ms. Allocated memory was 2.7 GB in the beginning and 4.4 GB in the end (delta: 1.8 GB). Free memory was 2.4 GB in the beginning and 3.2 GB in the end (delta: -777.8 MB). Peak memory consumption was 994.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 214]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 214). Cancelled while BasicCegarLoop was constructing difference of abstraction (254945states) and FLOYD_HOARE automaton (currently 6 states, 5 states before enhancement),while ReachableStatesComputation was computing reachable states (33877 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1749 locations, 1 error locations. TIMEOUT Result, 198.8s OverallTime, 9 OverallIterations, 4 TraceHistogramMax, 169.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 11409 SDtfs, 40147 SDslu, 3665 SDs, 0 SdLazy, 82070 SolverSat, 19761 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 133.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1160 GetRequests, 1124 SyntacticMatches, 10 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 2.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=254945occurred 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: 14.8s AutomataMinimizationTime, 8 MinimizatonAttempts, 55087 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 5.5s InterpolantComputationTime, 6475 NumberOfCodeBlocks, 6475 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 6465 ConstructedInterpolants, 0 QuantifiedInterpolants, 14860518 SizeOfPredicates, 5 NumberOfNonLiveVariables, 1242 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 10 InterpolantComputations, 9 PerfectInterpolantSequences, 4794/4798 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown