java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label25.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-07 21:44:18,000 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-07 21:44:18,002 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-07 21:44:18,014 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-07 21:44:18,024 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-07 21:44:18,025 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-07 21:44:18,026 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-07 21:44:18,027 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-07 21:44:18,028 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-07 21:44:18,029 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-07 21:44:18,031 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-07 21:44:18,033 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-07 21:44:18,034 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-07 21:44:18,036 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-07 21:44:18,037 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-07 21:44:18,038 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-07 21:44:18,040 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-07 21:44:18,047 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-07 21:44:18,048 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-07 21:44:18,049 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-07 21:44:18,050 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-09-07 21:44:18,064 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-07 21:44:18,064 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-07 21:44:18,065 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-07 21:44:18,066 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-07 21:44:18,066 INFO L138 SettingsManager]: * Use SBE=true [2019-09-07 21:44:18,066 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-07 21:44:18,066 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-07 21:44:18,067 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-07 21:44:18,067 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-07 21:44:18,067 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-07 21:44:18,067 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-07 21:44:18,067 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-07 21:44:18,068 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-07 21:44:18,068 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-07 21:44:18,068 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-07 21:44:18,068 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-07 21:44:18,068 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-07 21:44:18,069 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-07 21:44:18,069 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-07 21:44:18,069 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-07 21:44:18,069 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-07 21:44:18,069 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-07 21:44:18,070 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-07 21:44:18,070 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-07 21:44:18,070 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-07 21:44:18,070 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-07 21:44:18,070 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-07 21:44:18,071 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-07 21:44:18,071 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-07 21:44:18,103 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-07 21:44:18,116 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-07 21:44:18,120 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-07 21:44:18,122 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-07 21:44:18,122 INFO L275 PluginConnector]: CDTParser initialized [2019-09-07 21:44:18,123 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label25.c [2019-09-07 21:44:18,190 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c2e8a283f/2bd77ac42a3f45d3956f05e2f4346e28/FLAGc72a3a40e [2019-09-07 21:44:18,890 INFO L306 CDTParser]: Found 1 translation units. [2019-09-07 21:44:18,891 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label25.c [2019-09-07 21:44:18,925 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c2e8a283f/2bd77ac42a3f45d3956f05e2f4346e28/FLAGc72a3a40e [2019-09-07 21:44:19,019 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c2e8a283f/2bd77ac42a3f45d3956f05e2f4346e28 [2019-09-07 21:44:19,031 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-07 21:44:19,033 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-07 21:44:19,036 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-07 21:44:19,036 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-07 21:44:19,040 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-07 21:44:19,041 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 09:44:19" (1/1) ... [2019-09-07 21:44:19,044 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6595b9fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 09:44:19, skipping insertion in model container [2019-09-07 21:44:19,045 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 09:44:19" (1/1) ... [2019-09-07 21:44:19,052 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-07 21:44:19,160 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-07 21:44:20,304 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-07 21:44:20,317 INFO L188 MainTranslator]: Completed pre-run [2019-09-07 21:44:20,758 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-07 21:44:20,783 INFO L192 MainTranslator]: Completed translation [2019-09-07 21:44:20,784 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 09:44:20 WrapperNode [2019-09-07 21:44:20,784 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-07 21:44:20,785 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-07 21:44:20,785 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-07 21:44:20,786 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-07 21:44:20,802 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 09:44:20" (1/1) ... [2019-09-07 21:44:20,802 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 09:44:20" (1/1) ... [2019-09-07 21:44:20,860 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 09:44:20" (1/1) ... [2019-09-07 21:44:20,862 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 09:44:20" (1/1) ... [2019-09-07 21:44:20,987 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 09:44:20" (1/1) ... [2019-09-07 21:44:21,025 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 09:44:20" (1/1) ... [2019-09-07 21:44:21,053 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 09:44:20" (1/1) ... [2019-09-07 21:44:21,078 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-07 21:44:21,079 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-07 21:44:21,079 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-07 21:44:21,079 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-07 21:44:21,080 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 09:44:20" (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 [2019-09-07 21:44:21,156 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-07 21:44:21,157 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-07 21:44:21,157 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-09-07 21:44:21,157 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-09-07 21:44:21,158 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-07 21:44:21,158 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-09-07 21:44:21,158 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-09-07 21:44:21,159 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-07 21:44:21,159 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-07 21:44:21,159 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-07 21:44:21,159 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-07 21:44:21,160 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-07 21:44:21,160 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-07 21:44:25,561 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-07 21:44:25,561 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-07 21:44:25,564 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 09:44:25 BoogieIcfgContainer [2019-09-07 21:44:25,565 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-07 21:44:25,566 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-07 21:44:25,566 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-07 21:44:25,569 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-07 21:44:25,570 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.09 09:44:19" (1/3) ... [2019-09-07 21:44:25,571 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ae4f468 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 09:44:25, skipping insertion in model container [2019-09-07 21:44:25,571 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 09:44:20" (2/3) ... [2019-09-07 21:44:25,572 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ae4f468 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 09:44:25, skipping insertion in model container [2019-09-07 21:44:25,572 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 09:44:25" (3/3) ... [2019-09-07 21:44:25,579 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem17_label25.c [2019-09-07 21:44:25,591 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-07 21:44:25,601 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-07 21:44:25,620 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-07 21:44:25,671 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-07 21:44:25,672 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-07 21:44:25,672 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-07 21:44:25,672 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-07 21:44:25,672 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-07 21:44:25,672 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-07 21:44:25,672 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-07 21:44:25,673 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-07 21:44:25,673 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-07 21:44:25,714 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states. [2019-09-07 21:44:25,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-09-07 21:44:25,722 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 21:44:25,723 INFO L399 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] [2019-09-07 21:44:25,725 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 21:44:25,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 21:44:25,730 INFO L82 PathProgramCache]: Analyzing trace with hash 1278977025, now seen corresponding path program 1 times [2019-09-07 21:44:25,732 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 21:44:25,733 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 21:44:25,784 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 21:44:25,784 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 21:44:25,785 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 21:44:25,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 21:44:25,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 21:44:25,997 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 21:44:25,998 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-07 21:44:26,002 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-07 21:44:26,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-07 21:44:26,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-07 21:44:26,019 INFO L87 Difference]: Start difference. First operand 603 states. Second operand 4 states. [2019-09-07 21:44:33,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 21:44:33,063 INFO L93 Difference]: Finished difference Result 2129 states and 3955 transitions. [2019-09-07 21:44:33,063 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-07 21:44:33,065 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2019-09-07 21:44:33,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 21:44:33,105 INFO L225 Difference]: With dead ends: 2129 [2019-09-07 21:44:33,106 INFO L226 Difference]: Without dead ends: 1447 [2019-09-07 21:44:33,117 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-07 21:44:33,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1447 states. [2019-09-07 21:44:33,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1447 to 1440. [2019-09-07 21:44:33,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1440 states. [2019-09-07 21:44:33,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1440 states to 1440 states and 2109 transitions. [2019-09-07 21:44:33,266 INFO L78 Accepts]: Start accepts. Automaton has 1440 states and 2109 transitions. Word has length 29 [2019-09-07 21:44:33,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 21:44:33,267 INFO L475 AbstractCegarLoop]: Abstraction has 1440 states and 2109 transitions. [2019-09-07 21:44:33,267 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-07 21:44:33,267 INFO L276 IsEmpty]: Start isEmpty. Operand 1440 states and 2109 transitions. [2019-09-07 21:44:33,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2019-09-07 21:44:33,272 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 21:44:33,273 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-07 21:44:33,273 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 21:44:33,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 21:44:33,274 INFO L82 PathProgramCache]: Analyzing trace with hash 1805651625, now seen corresponding path program 1 times [2019-09-07 21:44:33,274 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 21:44:33,274 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 21:44:33,275 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 21:44:33,275 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 21:44:33,275 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 21:44:33,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 21:44:33,538 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 21:44:33,539 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 21:44:33,539 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-07 21:44:33,547 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-07 21:44:33,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-07 21:44:33,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-07 21:44:33,549 INFO L87 Difference]: Start difference. First operand 1440 states and 2109 transitions. Second operand 4 states. [2019-09-07 21:44:38,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 21:44:38,803 INFO L93 Difference]: Finished difference Result 5498 states and 8211 transitions. [2019-09-07 21:44:38,804 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-07 21:44:38,804 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 103 [2019-09-07 21:44:38,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 21:44:38,831 INFO L225 Difference]: With dead ends: 5498 [2019-09-07 21:44:38,831 INFO L226 Difference]: Without dead ends: 4064 [2019-09-07 21:44:38,837 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-07 21:44:38,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4064 states. [2019-09-07 21:44:38,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4064 to 4060. [2019-09-07 21:44:38,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4060 states. [2019-09-07 21:44:38,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4060 states to 4060 states and 5456 transitions. [2019-09-07 21:44:38,991 INFO L78 Accepts]: Start accepts. Automaton has 4060 states and 5456 transitions. Word has length 103 [2019-09-07 21:44:38,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 21:44:38,991 INFO L475 AbstractCegarLoop]: Abstraction has 4060 states and 5456 transitions. [2019-09-07 21:44:38,992 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-07 21:44:38,992 INFO L276 IsEmpty]: Start isEmpty. Operand 4060 states and 5456 transitions. [2019-09-07 21:44:39,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2019-09-07 21:44:39,005 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 21:44:39,005 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-07 21:44:39,006 INFO L418 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 21:44:39,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 21:44:39,006 INFO L82 PathProgramCache]: Analyzing trace with hash -363314218, now seen corresponding path program 1 times [2019-09-07 21:44:39,006 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 21:44:39,007 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 21:44:39,008 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 21:44:39,009 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 21:44:39,009 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 21:44:39,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 21:44:39,311 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 21:44:39,312 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 21:44:39,313 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-07 21:44:39,315 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-07 21:44:39,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-07 21:44:39,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-09-07 21:44:39,316 INFO L87 Difference]: Start difference. First operand 4060 states and 5456 transitions. Second operand 6 states. [2019-09-07 21:44:44,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 21:44:44,025 INFO L93 Difference]: Finished difference Result 12215 states and 17159 transitions. [2019-09-07 21:44:44,026 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-07 21:44:44,026 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 144 [2019-09-07 21:44:44,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 21:44:44,071 INFO L225 Difference]: With dead ends: 12215 [2019-09-07 21:44:44,071 INFO L226 Difference]: Without dead ends: 8161 [2019-09-07 21:44:44,083 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-09-07 21:44:44,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8161 states. [2019-09-07 21:44:44,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8161 to 8115. [2019-09-07 21:44:44,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8115 states. [2019-09-07 21:44:44,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8115 states to 8115 states and 10603 transitions. [2019-09-07 21:44:44,326 INFO L78 Accepts]: Start accepts. Automaton has 8115 states and 10603 transitions. Word has length 144 [2019-09-07 21:44:44,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 21:44:44,336 INFO L475 AbstractCegarLoop]: Abstraction has 8115 states and 10603 transitions. [2019-09-07 21:44:44,336 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-07 21:44:44,336 INFO L276 IsEmpty]: Start isEmpty. Operand 8115 states and 10603 transitions. [2019-09-07 21:44:44,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2019-09-07 21:44:44,345 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 21:44:44,345 INFO L399 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 21:44:44,345 INFO L418 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 21:44:44,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 21:44:44,346 INFO L82 PathProgramCache]: Analyzing trace with hash 1953953084, now seen corresponding path program 1 times [2019-09-07 21:44:44,346 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 21:44:44,346 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 21:44:44,348 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 21:44:44,349 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 21:44:44,349 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 21:44:44,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 21:44:44,574 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 45 proven. 7 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2019-09-07 21:44:44,575 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 21:44:44,575 INFO L223 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 [2019-09-07 21:44:44,593 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 21:44:44,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 21:44:44,668 INFO L256 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 21:44:44,680 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 21:44:44,789 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 116 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 21:44:44,798 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 21:44:44,798 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 21:44:44,800 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 21:44:44,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 21:44:44,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-07 21:44:44,801 INFO L87 Difference]: Start difference. First operand 8115 states and 10603 transitions. Second operand 9 states. [2019-09-07 21:44:50,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 21:44:50,412 INFO L93 Difference]: Finished difference Result 20210 states and 26294 transitions. [2019-09-07 21:44:50,413 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-09-07 21:44:50,413 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 195 [2019-09-07 21:44:50,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 21:44:50,453 INFO L225 Difference]: With dead ends: 20210 [2019-09-07 21:44:50,454 INFO L226 Difference]: Without dead ends: 9426 [2019-09-07 21:44:50,482 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2019-09-07 21:44:50,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9426 states. [2019-09-07 21:44:50,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9426 to 8968. [2019-09-07 21:44:50,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8968 states. [2019-09-07 21:44:50,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8968 states to 8968 states and 10240 transitions. [2019-09-07 21:44:50,764 INFO L78 Accepts]: Start accepts. Automaton has 8968 states and 10240 transitions. Word has length 195 [2019-09-07 21:44:50,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 21:44:50,765 INFO L475 AbstractCegarLoop]: Abstraction has 8968 states and 10240 transitions. [2019-09-07 21:44:50,765 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 21:44:50,765 INFO L276 IsEmpty]: Start isEmpty. Operand 8968 states and 10240 transitions. [2019-09-07 21:44:50,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2019-09-07 21:44:50,768 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 21:44:50,768 INFO L399 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 21:44:50,769 INFO L418 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 21:44:50,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 21:44:50,769 INFO L82 PathProgramCache]: Analyzing trace with hash -1479650210, now seen corresponding path program 1 times [2019-09-07 21:44:50,769 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 21:44:50,770 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 21:44:50,773 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 21:44:50,774 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 21:44:50,774 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 21:44:50,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 21:44:51,038 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 95 proven. 29 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-09-07 21:44:51,038 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 21:44:51,039 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-07 21:44:51,052 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 21:44:51,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 21:44:51,122 INFO L256 TraceCheckSpWp]: Trace formula consists of 395 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 21:44:51,129 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 21:44:51,203 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2019-09-07 21:44:51,207 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 21:44:51,208 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2019-09-07 21:44:51,211 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-07 21:44:51,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-07 21:44:51,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2019-09-07 21:44:51,211 INFO L87 Difference]: Start difference. First operand 8968 states and 10240 transitions. Second operand 8 states. [2019-09-07 21:44:56,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 21:44:56,228 INFO L93 Difference]: Finished difference Result 17987 states and 20685 transitions. [2019-09-07 21:44:56,229 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-09-07 21:44:56,229 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 202 [2019-09-07 21:44:56,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 21:44:56,263 INFO L225 Difference]: With dead ends: 17987 [2019-09-07 21:44:56,263 INFO L226 Difference]: Without dead ends: 9025 [2019-09-07 21:44:56,284 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2019-09-07 21:44:56,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9025 states. [2019-09-07 21:44:56,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9025 to 8535. [2019-09-07 21:44:56,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8535 states. [2019-09-07 21:44:56,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8535 states to 8535 states and 9719 transitions. [2019-09-07 21:44:56,452 INFO L78 Accepts]: Start accepts. Automaton has 8535 states and 9719 transitions. Word has length 202 [2019-09-07 21:44:56,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 21:44:56,453 INFO L475 AbstractCegarLoop]: Abstraction has 8535 states and 9719 transitions. [2019-09-07 21:44:56,453 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-07 21:44:56,453 INFO L276 IsEmpty]: Start isEmpty. Operand 8535 states and 9719 transitions. [2019-09-07 21:44:56,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2019-09-07 21:44:56,458 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 21:44:56,458 INFO L399 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 21:44:56,459 INFO L418 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 21:44:56,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 21:44:56,459 INFO L82 PathProgramCache]: Analyzing trace with hash 82183970, now seen corresponding path program 1 times [2019-09-07 21:44:56,459 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 21:44:56,459 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 21:44:56,460 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 21:44:56,460 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 21:44:56,461 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 21:44:56,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 21:44:56,631 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2019-09-07 21:44:56,631 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 21:44:56,632 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-07 21:44:56,632 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-07 21:44:56,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-07 21:44:56,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-07 21:44:56,633 INFO L87 Difference]: Start difference. First operand 8535 states and 9719 transitions. Second operand 4 states. [2019-09-07 21:45:00,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 21:45:00,593 INFO L93 Difference]: Finished difference Result 24542 states and 28364 transitions. [2019-09-07 21:45:00,595 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-07 21:45:00,595 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 257 [2019-09-07 21:45:00,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 21:45:00,641 INFO L225 Difference]: With dead ends: 24542 [2019-09-07 21:45:00,641 INFO L226 Difference]: Without dead ends: 16013 [2019-09-07 21:45:00,662 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-07 21:45:00,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16013 states. [2019-09-07 21:45:00,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16013 to 14698. [2019-09-07 21:45:00,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14698 states. [2019-09-07 21:45:00,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14698 states to 14698 states and 16706 transitions. [2019-09-07 21:45:00,945 INFO L78 Accepts]: Start accepts. Automaton has 14698 states and 16706 transitions. Word has length 257 [2019-09-07 21:45:00,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 21:45:00,946 INFO L475 AbstractCegarLoop]: Abstraction has 14698 states and 16706 transitions. [2019-09-07 21:45:00,946 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-07 21:45:00,946 INFO L276 IsEmpty]: Start isEmpty. Operand 14698 states and 16706 transitions. [2019-09-07 21:45:00,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2019-09-07 21:45:00,951 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 21:45:00,952 INFO L399 BasicCegarLoop]: trace histogram [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, 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] [2019-09-07 21:45:00,954 INFO L418 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 21:45:00,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 21:45:00,954 INFO L82 PathProgramCache]: Analyzing trace with hash -553119654, now seen corresponding path program 1 times [2019-09-07 21:45:00,954 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 21:45:00,954 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 21:45:00,956 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 21:45:00,956 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 21:45:00,956 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 21:45:01,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 21:45:01,182 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 186 proven. 21 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2019-09-07 21:45:01,182 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 21:45:01,182 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-07 21:45:01,205 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 21:45:01,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 21:45:01,290 INFO L256 TraceCheckSpWp]: Trace formula consists of 506 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 21:45:01,302 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 21:45:01,438 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2019-09-07 21:45:01,450 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 21:45:01,450 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 4 [2019-09-07 21:45:01,452 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-07 21:45:01,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-07 21:45:01,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-07 21:45:01,453 INFO L87 Difference]: Start difference. First operand 14698 states and 16706 transitions. Second operand 4 states. [2019-09-07 21:45:05,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 21:45:05,784 INFO L93 Difference]: Finished difference Result 34309 states and 39586 transitions. [2019-09-07 21:45:05,784 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-07 21:45:05,785 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 273 [2019-09-07 21:45:05,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 21:45:05,849 INFO L225 Difference]: With dead ends: 34309 [2019-09-07 21:45:05,849 INFO L226 Difference]: Without dead ends: 19165 [2019-09-07 21:45:05,884 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 278 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-09-07 21:45:05,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19165 states. [2019-09-07 21:45:06,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19165 to 18728. [2019-09-07 21:45:06,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18728 states. [2019-09-07 21:45:06,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18728 states to 18728 states and 21144 transitions. [2019-09-07 21:45:06,231 INFO L78 Accepts]: Start accepts. Automaton has 18728 states and 21144 transitions. Word has length 273 [2019-09-07 21:45:06,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 21:45:06,231 INFO L475 AbstractCegarLoop]: Abstraction has 18728 states and 21144 transitions. [2019-09-07 21:45:06,232 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-07 21:45:06,232 INFO L276 IsEmpty]: Start isEmpty. Operand 18728 states and 21144 transitions. [2019-09-07 21:45:06,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2019-09-07 21:45:06,240 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 21:45:06,240 INFO L399 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 21:45:06,240 INFO L418 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 21:45:06,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 21:45:06,241 INFO L82 PathProgramCache]: Analyzing trace with hash 1437400654, now seen corresponding path program 1 times [2019-09-07 21:45:06,241 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 21:45:06,241 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 21:45:06,242 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 21:45:06,242 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 21:45:06,242 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 21:45:07,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 21:45:07,238 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 48 proven. 2 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2019-09-07 21:45:07,239 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 21:45:07,239 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-07 21:45:07,261 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 21:45:07,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 21:45:07,359 INFO L256 TraceCheckSpWp]: Trace formula consists of 522 conjuncts, 13 conjunts are in the unsatisfiable core [2019-09-07 21:45:07,369 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 21:45:07,393 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 21:45:07,395 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 21:45:07,629 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 10 proven. 40 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2019-09-07 21:45:07,634 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 21:45:07,634 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 11 [2019-09-07 21:45:07,635 INFO L454 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-09-07 21:45:07,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-09-07 21:45:07,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2019-09-07 21:45:07,636 INFO L87 Difference]: Start difference. First operand 18728 states and 21144 transitions. Second operand 11 states. [2019-09-07 21:45:17,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 21:45:17,073 INFO L93 Difference]: Finished difference Result 49205 states and 57543 transitions. [2019-09-07 21:45:17,074 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2019-09-07 21:45:17,074 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 326 [2019-09-07 21:45:17,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 21:45:17,249 INFO L225 Difference]: With dead ends: 49205 [2019-09-07 21:45:17,249 INFO L226 Difference]: Without dead ends: 30028 [2019-09-07 21:45:17,271 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 324 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=134, Invalid=418, Unknown=0, NotChecked=0, Total=552 [2019-09-07 21:45:17,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30028 states. [2019-09-07 21:45:17,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30028 to 26346. [2019-09-07 21:45:17,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26346 states. [2019-09-07 21:45:17,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26346 states to 26346 states and 30154 transitions. [2019-09-07 21:45:17,656 INFO L78 Accepts]: Start accepts. Automaton has 26346 states and 30154 transitions. Word has length 326 [2019-09-07 21:45:17,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 21:45:17,657 INFO L475 AbstractCegarLoop]: Abstraction has 26346 states and 30154 transitions. [2019-09-07 21:45:17,657 INFO L476 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-09-07 21:45:17,657 INFO L276 IsEmpty]: Start isEmpty. Operand 26346 states and 30154 transitions. [2019-09-07 21:45:17,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 402 [2019-09-07 21:45:17,670 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 21:45:17,671 INFO L399 BasicCegarLoop]: trace histogram [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, 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] [2019-09-07 21:45:17,671 INFO L418 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 21:45:17,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 21:45:17,671 INFO L82 PathProgramCache]: Analyzing trace with hash -1276893638, now seen corresponding path program 1 times [2019-09-07 21:45:17,672 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 21:45:17,672 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 21:45:17,672 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 21:45:17,673 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 21:45:17,673 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 21:45:17,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 21:45:18,007 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 221 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2019-09-07 21:45:18,007 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 21:45:18,007 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-07 21:45:18,027 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 21:45:18,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 21:45:18,128 INFO L256 TraceCheckSpWp]: Trace formula consists of 636 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 21:45:18,134 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 21:45:18,245 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 221 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2019-09-07 21:45:18,257 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 21:45:18,258 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2019-09-07 21:45:18,258 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-07 21:45:18,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-07 21:45:18,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2019-09-07 21:45:18,261 INFO L87 Difference]: Start difference. First operand 26346 states and 30154 transitions. Second operand 7 states. [2019-09-07 21:45:23,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 21:45:23,246 INFO L93 Difference]: Finished difference Result 66377 states and 76954 transitions. [2019-09-07 21:45:23,247 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-07 21:45:23,247 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 401 [2019-09-07 21:45:23,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 21:45:23,346 INFO L225 Difference]: With dead ends: 66377 [2019-09-07 21:45:23,346 INFO L226 Difference]: Without dead ends: 40037 [2019-09-07 21:45:23,387 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 409 GetRequests, 401 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2019-09-07 21:45:23,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40037 states. [2019-09-07 21:45:23,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40037 to 36955. [2019-09-07 21:45:23,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36955 states. [2019-09-07 21:45:23,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36955 states to 36955 states and 42719 transitions. [2019-09-07 21:45:23,980 INFO L78 Accepts]: Start accepts. Automaton has 36955 states and 42719 transitions. Word has length 401 [2019-09-07 21:45:23,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 21:45:23,981 INFO L475 AbstractCegarLoop]: Abstraction has 36955 states and 42719 transitions. [2019-09-07 21:45:23,981 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-07 21:45:23,983 INFO L276 IsEmpty]: Start isEmpty. Operand 36955 states and 42719 transitions. [2019-09-07 21:45:23,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 424 [2019-09-07 21:45:23,999 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 21:45:24,000 INFO L399 BasicCegarLoop]: trace histogram [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, 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] [2019-09-07 21:45:24,000 INFO L418 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 21:45:24,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 21:45:24,001 INFO L82 PathProgramCache]: Analyzing trace with hash 674276275, now seen corresponding path program 1 times [2019-09-07 21:45:24,001 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 21:45:24,001 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 21:45:24,002 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 21:45:24,002 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 21:45:24,003 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 21:45:24,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 21:45:24,933 INFO L134 CoverageAnalysis]: Checked inductivity of 349 backedges. 240 proven. 103 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-09-07 21:45:24,934 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 21:45:24,934 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-07 21:45:24,957 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 21:45:25,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 21:45:25,075 INFO L256 TraceCheckSpWp]: Trace formula consists of 658 conjuncts, 13 conjunts are in the unsatisfiable core [2019-09-07 21:45:25,081 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 21:45:25,107 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 21:45:25,108 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 21:45:27,220 WARN L188 SmtUtils]: Spent 2.08 s on a formula simplification. DAG size of input: 35 DAG size of output: 21 [2019-09-07 21:45:27,278 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-09-07 21:45:27,464 INFO L134 CoverageAnalysis]: Checked inductivity of 349 backedges. 324 proven. 2 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2019-09-07 21:45:27,474 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 21:45:27,474 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2019-09-07 21:45:27,478 INFO L454 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-09-07 21:45:27,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-09-07 21:45:27,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2019-09-07 21:45:27,479 INFO L87 Difference]: Start difference. First operand 36955 states and 42719 transitions. Second operand 14 states. [2019-09-07 21:53:46,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 21:53:46,818 INFO L93 Difference]: Finished difference Result 143528 states and 172049 transitions. [2019-09-07 21:53:46,818 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2019-09-07 21:53:46,819 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 423 [2019-09-07 21:53:46,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 21:53:47,183 INFO L225 Difference]: With dead ends: 143528 [2019-09-07 21:53:47,183 INFO L226 Difference]: Without dead ends: 105701 [2019-09-07 21:53:47,303 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 563 GetRequests, 453 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4934 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=1812, Invalid=10619, Unknown=1, NotChecked=0, Total=12432 [2019-09-07 21:53:47,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105701 states. [2019-09-07 21:53:48,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105701 to 94391. [2019-09-07 21:53:48,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94391 states. [2019-09-07 21:53:49,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94391 states to 94391 states and 110997 transitions. [2019-09-07 21:53:49,010 INFO L78 Accepts]: Start accepts. Automaton has 94391 states and 110997 transitions. Word has length 423 [2019-09-07 21:53:49,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 21:53:49,010 INFO L475 AbstractCegarLoop]: Abstraction has 94391 states and 110997 transitions. [2019-09-07 21:53:49,010 INFO L476 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-09-07 21:53:49,011 INFO L276 IsEmpty]: Start isEmpty. Operand 94391 states and 110997 transitions. [2019-09-07 21:53:49,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 495 [2019-09-07 21:53:49,038 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 21:53:49,039 INFO L399 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 21:53:49,039 INFO L418 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 21:53:49,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 21:53:49,040 INFO L82 PathProgramCache]: Analyzing trace with hash 2087019481, now seen corresponding path program 1 times [2019-09-07 21:53:49,040 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 21:53:49,040 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 21:53:49,041 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 21:53:49,041 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 21:53:49,041 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 21:53:49,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 21:53:49,389 INFO L134 CoverageAnalysis]: Checked inductivity of 642 backedges. 97 proven. 0 refuted. 0 times theorem prover too weak. 545 trivial. 0 not checked. [2019-09-07 21:53:49,389 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 21:53:49,390 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-07 21:53:49,391 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-07 21:53:49,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-07 21:53:49,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-07 21:53:49,391 INFO L87 Difference]: Start difference. First operand 94391 states and 110997 transitions. Second operand 4 states. [2019-09-07 21:53:54,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 21:53:54,559 INFO L93 Difference]: Finished difference Result 213197 states and 252676 transitions. [2019-09-07 21:53:54,560 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-07 21:53:54,560 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 494 [2019-09-07 21:53:54,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 21:53:54,843 INFO L225 Difference]: With dead ends: 213197 [2019-09-07 21:53:54,844 INFO L226 Difference]: Without dead ends: 116159 [2019-09-07 21:53:54,952 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-07 21:53:55,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116159 states. [2019-09-07 21:53:58,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116159 to 112643. [2019-09-07 21:53:58,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112643 states. [2019-09-07 21:53:58,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112643 states to 112643 states and 130930 transitions. [2019-09-07 21:53:58,918 INFO L78 Accepts]: Start accepts. Automaton has 112643 states and 130930 transitions. Word has length 494 [2019-09-07 21:53:58,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 21:53:58,919 INFO L475 AbstractCegarLoop]: Abstraction has 112643 states and 130930 transitions. [2019-09-07 21:53:58,919 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-07 21:53:58,919 INFO L276 IsEmpty]: Start isEmpty. Operand 112643 states and 130930 transitions. [2019-09-07 21:53:58,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 515 [2019-09-07 21:53:58,938 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 21:53:58,939 INFO L399 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2019-09-07 21:53:58,939 INFO L418 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 21:53:58,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 21:53:58,939 INFO L82 PathProgramCache]: Analyzing trace with hash 2029136707, now seen corresponding path program 1 times [2019-09-07 21:53:58,940 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 21:53:58,940 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 21:53:58,941 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 21:53:58,941 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 21:53:58,941 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 21:53:59,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 21:53:59,352 INFO L134 CoverageAnalysis]: Checked inductivity of 622 backedges. 270 proven. 102 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked. [2019-09-07 21:53:59,353 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 21:53:59,353 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 21:53:59,366 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 21:53:59,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 21:53:59,514 INFO L256 TraceCheckSpWp]: Trace formula consists of 788 conjuncts, 7 conjunts are in the unsatisfiable core [2019-09-07 21:53:59,522 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 21:53:59,529 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 21:53:59,529 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 21:53:59,530 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 21:53:59,531 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 21:53:59,532 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 21:53:59,533 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 21:53:59,533 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 21:53:59,534 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 21:53:59,536 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 21:53:59,536 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 21:53:59,537 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 21:53:59,537 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 21:53:59,538 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 21:53:59,539 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 21:53:59,540 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 21:53:59,541 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 21:53:59,541 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 21:53:59,542 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 21:53:59,543 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 21:53:59,543 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 21:53:59,544 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 21:53:59,545 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 21:53:59,545 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 21:53:59,546 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 21:53:59,547 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 21:54:02,159 WARN L188 SmtUtils]: Spent 2.52 s on a formula simplification. DAG size of input: 110 DAG size of output: 50 [2019-09-07 21:54:02,931 INFO L134 CoverageAnalysis]: Checked inductivity of 622 backedges. 367 proven. 2 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2019-09-07 21:54:02,935 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 21:54:02,936 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2019-09-07 21:54:02,937 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-07 21:54:02,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-07 21:54:02,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-09-07 21:54:02,938 INFO L87 Difference]: Start difference. First operand 112643 states and 130930 transitions. Second operand 8 states. [2019-09-07 21:55:07,989 WARN L188 SmtUtils]: Spent 2.04 s on a formula simplification that was a NOOP. DAG size: 57 [2019-09-07 21:55:21,896 WARN L188 SmtUtils]: Spent 2.03 s on a formula simplification that was a NOOP. DAG size: 56 [2019-09-07 21:57:39,970 WARN L188 SmtUtils]: Spent 2.07 s on a formula simplification that was a NOOP. DAG size: 59