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/Problem13_label42.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-07 19:48:32,522 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-07 19:48:32,524 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-07 19:48:32,535 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-07 19:48:32,549 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-07 19:48:32,550 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-07 19:48:32,553 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-07 19:48:32,556 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-07 19:48:32,557 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-07 19:48:32,558 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-07 19:48:32,564 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-07 19:48:32,568 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-07 19:48:32,572 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-07 19:48:32,573 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-07 19:48:32,574 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-07 19:48:32,575 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-07 19:48:32,579 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-07 19:48:32,594 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-07 19:48:32,596 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-07 19:48:32,597 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-07 19:48:32,598 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 19:48:32,624 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-07 19:48:32,625 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-07 19:48:32,627 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-07 19:48:32,627 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-07 19:48:32,628 INFO L138 SettingsManager]: * Use SBE=true [2019-09-07 19:48:32,628 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-07 19:48:32,628 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-07 19:48:32,628 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-07 19:48:32,628 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-07 19:48:32,629 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-07 19:48:32,630 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-07 19:48:32,630 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-07 19:48:32,630 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-07 19:48:32,631 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-07 19:48:32,631 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-07 19:48:32,631 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-07 19:48:32,631 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-07 19:48:32,632 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-07 19:48:32,632 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-07 19:48:32,632 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-07 19:48:32,633 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-07 19:48:32,633 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-07 19:48:32,633 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-07 19:48:32,633 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-07 19:48:32,634 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-07 19:48:32,634 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-07 19:48:32,634 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-07 19:48:32,634 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-07 19:48:32,634 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-07 19:48:32,685 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-07 19:48:32,705 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-07 19:48:32,709 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-07 19:48:32,711 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-07 19:48:32,711 INFO L275 PluginConnector]: CDTParser initialized [2019-09-07 19:48:32,712 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label42.c [2019-09-07 19:48:32,786 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64b2539b4/c293344ef7d0455a8c2b71d86054d536/FLAG16d7aeaa3 [2019-09-07 19:48:33,594 INFO L306 CDTParser]: Found 1 translation units. [2019-09-07 19:48:33,595 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label42.c [2019-09-07 19:48:33,648 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64b2539b4/c293344ef7d0455a8c2b71d86054d536/FLAG16d7aeaa3 [2019-09-07 19:48:34,104 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64b2539b4/c293344ef7d0455a8c2b71d86054d536 [2019-09-07 19:48:34,115 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-07 19:48:34,117 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-07 19:48:34,118 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-07 19:48:34,118 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-07 19:48:34,122 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-07 19:48:34,123 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 07:48:34" (1/1) ... [2019-09-07 19:48:34,126 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39e607a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 07:48:34, skipping insertion in model container [2019-09-07 19:48:34,126 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 07:48:34" (1/1) ... [2019-09-07 19:48:34,134 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-07 19:48:34,300 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-07 19:48:35,914 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-07 19:48:35,925 INFO L188 MainTranslator]: Completed pre-run [2019-09-07 19:48:36,765 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-07 19:48:36,809 INFO L192 MainTranslator]: Completed translation [2019-09-07 19:48:36,810 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 07:48:36 WrapperNode [2019-09-07 19:48:36,811 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-07 19:48:36,811 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-07 19:48:36,812 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-07 19:48:36,812 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-07 19:48:36,826 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 07:48:36" (1/1) ... [2019-09-07 19:48:36,827 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 07:48:36" (1/1) ... [2019-09-07 19:48:36,903 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 07:48:36" (1/1) ... [2019-09-07 19:48:36,905 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 07:48:36" (1/1) ... [2019-09-07 19:48:37,026 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 07:48:36" (1/1) ... [2019-09-07 19:48:37,064 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 07:48:36" (1/1) ... [2019-09-07 19:48:37,099 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 07:48:36" (1/1) ... [2019-09-07 19:48:37,129 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-07 19:48:37,130 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-07 19:48:37,130 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-07 19:48:37,130 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-07 19:48:37,132 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 07:48:36" (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 19:48:37,200 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-07 19:48:37,200 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-07 19:48:37,200 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-09-07 19:48:37,200 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-09-07 19:48:37,201 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-09-07 19:48:37,201 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2019-09-07 19:48:37,201 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-07 19:48:37,201 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-09-07 19:48:37,201 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-09-07 19:48:37,201 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-09-07 19:48:37,202 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2019-09-07 19:48:37,202 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-07 19:48:37,204 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-07 19:48:37,204 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-07 19:48:37,206 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-07 19:48:37,206 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-07 19:48:37,207 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-07 19:48:43,453 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-07 19:48:43,453 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-07 19:48:43,459 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 07:48:43 BoogieIcfgContainer [2019-09-07 19:48:43,459 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-07 19:48:43,460 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-07 19:48:43,460 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-07 19:48:43,463 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-07 19:48:43,463 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.09 07:48:34" (1/3) ... [2019-09-07 19:48:43,465 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c61b548 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 07:48:43, skipping insertion in model container [2019-09-07 19:48:43,465 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 07:48:36" (2/3) ... [2019-09-07 19:48:43,466 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c61b548 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 07:48:43, skipping insertion in model container [2019-09-07 19:48:43,466 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 07:48:43" (3/3) ... [2019-09-07 19:48:43,473 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem13_label42.c [2019-09-07 19:48:43,487 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-07 19:48:43,497 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-07 19:48:43,514 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-07 19:48:43,568 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-07 19:48:43,569 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-07 19:48:43,569 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-07 19:48:43,569 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-07 19:48:43,569 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-07 19:48:43,569 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-07 19:48:43,569 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-07 19:48:43,569 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-07 19:48:43,570 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-07 19:48:43,620 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states. [2019-09-07 19:48:43,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2019-09-07 19:48:43,632 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:48:43,633 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:48:43,635 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:48:43,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:48:43,641 INFO L82 PathProgramCache]: Analyzing trace with hash -881047656, now seen corresponding path program 1 times [2019-09-07 19:48:43,642 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:48:43,643 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:48:43,691 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:48:43,691 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:48:43,691 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:48:43,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:48:44,047 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 19:48:44,050 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 19:48:44,050 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-07 19:48:44,055 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-07 19:48:44,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-07 19:48:44,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-07 19:48:44,072 INFO L87 Difference]: Start difference. First operand 1119 states. Second operand 4 states. [2019-09-07 19:48:54,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:48:54,529 INFO L93 Difference]: Finished difference Result 4101 states and 7665 transitions. [2019-09-07 19:48:54,530 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-07 19:48:54,531 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 71 [2019-09-07 19:48:54,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:48:54,577 INFO L225 Difference]: With dead ends: 4101 [2019-09-07 19:48:54,577 INFO L226 Difference]: Without dead ends: 2901 [2019-09-07 19:48:54,594 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 19:48:54,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2901 states. [2019-09-07 19:48:54,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2901 to 2771. [2019-09-07 19:48:54,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2771 states. [2019-09-07 19:48:54,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2771 states to 2771 states and 4860 transitions. [2019-09-07 19:48:54,785 INFO L78 Accepts]: Start accepts. Automaton has 2771 states and 4860 transitions. Word has length 71 [2019-09-07 19:48:54,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:48:54,786 INFO L475 AbstractCegarLoop]: Abstraction has 2771 states and 4860 transitions. [2019-09-07 19:48:54,786 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-07 19:48:54,786 INFO L276 IsEmpty]: Start isEmpty. Operand 2771 states and 4860 transitions. [2019-09-07 19:48:54,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2019-09-07 19:48:54,793 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:48:54,794 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 19:48:54,795 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:48:54,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:48:54,795 INFO L82 PathProgramCache]: Analyzing trace with hash -1035192448, now seen corresponding path program 1 times [2019-09-07 19:48:54,795 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:48:54,796 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:48:54,797 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:48:54,797 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:48:54,797 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:48:54,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:48:55,007 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 19:48:55,008 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 19:48:55,008 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-07 19:48:55,009 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-07 19:48:55,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-07 19:48:55,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-09-07 19:48:55,010 INFO L87 Difference]: Start difference. First operand 2771 states and 4860 transitions. Second operand 6 states. [2019-09-07 19:49:02,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:49:02,585 INFO L93 Difference]: Finished difference Result 8087 states and 14483 transitions. [2019-09-07 19:49:02,586 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-07 19:49:02,586 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 141 [2019-09-07 19:49:02,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:49:02,621 INFO L225 Difference]: With dead ends: 8087 [2019-09-07 19:49:02,621 INFO L226 Difference]: Without dead ends: 5322 [2019-09-07 19:49:02,630 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 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 19:49:02,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5322 states. [2019-09-07 19:49:02,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5322 to 5280. [2019-09-07 19:49:02,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5280 states. [2019-09-07 19:49:02,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5280 states to 5280 states and 8396 transitions. [2019-09-07 19:49:02,822 INFO L78 Accepts]: Start accepts. Automaton has 5280 states and 8396 transitions. Word has length 141 [2019-09-07 19:49:02,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:49:02,825 INFO L475 AbstractCegarLoop]: Abstraction has 5280 states and 8396 transitions. [2019-09-07 19:49:02,825 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-07 19:49:02,826 INFO L276 IsEmpty]: Start isEmpty. Operand 5280 states and 8396 transitions. [2019-09-07 19:49:02,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2019-09-07 19:49:02,837 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:49:02,837 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-07 19:49:02,838 INFO L418 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:49:02,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:49:02,839 INFO L82 PathProgramCache]: Analyzing trace with hash 1070068633, now seen corresponding path program 1 times [2019-09-07 19:49:02,839 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:49:02,840 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:49:02,842 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:49:02,843 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:49:02,843 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:49:02,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:49:03,132 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 19:49:03,133 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 19:49:03,133 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-07 19:49:03,135 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-07 19:49:03,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-07 19:49:03,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-09-07 19:49:03,136 INFO L87 Difference]: Start difference. First operand 5280 states and 8396 transitions. Second operand 6 states. [2019-09-07 19:49:09,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:49:09,529 INFO L93 Difference]: Finished difference Result 15778 states and 26330 transitions. [2019-09-07 19:49:09,529 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-07 19:49:09,529 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 144 [2019-09-07 19:49:09,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:49:09,584 INFO L225 Difference]: With dead ends: 15778 [2019-09-07 19:49:09,588 INFO L226 Difference]: Without dead ends: 10504 [2019-09-07 19:49:09,607 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 19:49:09,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10504 states. [2019-09-07 19:49:09,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10504 to 10444. [2019-09-07 19:49:09,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10444 states. [2019-09-07 19:49:09,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10444 states to 10444 states and 15901 transitions. [2019-09-07 19:49:09,915 INFO L78 Accepts]: Start accepts. Automaton has 10444 states and 15901 transitions. Word has length 144 [2019-09-07 19:49:09,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:49:09,918 INFO L475 AbstractCegarLoop]: Abstraction has 10444 states and 15901 transitions. [2019-09-07 19:49:09,918 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-07 19:49:09,918 INFO L276 IsEmpty]: Start isEmpty. Operand 10444 states and 15901 transitions. [2019-09-07 19:49:09,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2019-09-07 19:49:09,925 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:49:09,925 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 19:49:09,925 INFO L418 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:49:09,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:49:09,926 INFO L82 PathProgramCache]: Analyzing trace with hash 1771576442, now seen corresponding path program 1 times [2019-09-07 19:49:09,926 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:49:09,926 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:49:09,927 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:49:09,927 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:49:09,927 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:49:09,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:49:10,121 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 128 proven. 67 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-09-07 19:49:10,121 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 19:49:10,121 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) [2019-09-07 19:49:10,136 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 19:49:10,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:49:10,242 INFO L256 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 6 conjunts are in the unsatisfiable core [2019-09-07 19:49:10,274 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 19:49:10,470 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 134 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2019-09-07 19:49:10,474 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 19:49:10,475 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2019-09-07 19:49:10,478 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-07 19:49:10,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-07 19:49:10,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-09-07 19:49:10,479 INFO L87 Difference]: Start difference. First operand 10444 states and 15901 transitions. Second operand 6 states. [2019-09-07 19:49:19,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:49:19,873 INFO L93 Difference]: Finished difference Result 31951 states and 54577 transitions. [2019-09-07 19:49:19,873 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-07 19:49:19,873 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 224 [2019-09-07 19:49:19,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:49:20,000 INFO L225 Difference]: With dead ends: 31951 [2019-09-07 19:49:20,002 INFO L226 Difference]: Without dead ends: 21513 [2019-09-07 19:49:20,047 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2019-09-07 19:49:20,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21513 states. [2019-09-07 19:49:20,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21513 to 21074. [2019-09-07 19:49:20,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21074 states. [2019-09-07 19:49:20,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21074 states to 21074 states and 31856 transitions. [2019-09-07 19:49:20,960 INFO L78 Accepts]: Start accepts. Automaton has 21074 states and 31856 transitions. Word has length 224 [2019-09-07 19:49:20,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:49:20,962 INFO L475 AbstractCegarLoop]: Abstraction has 21074 states and 31856 transitions. [2019-09-07 19:49:20,962 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-07 19:49:20,962 INFO L276 IsEmpty]: Start isEmpty. Operand 21074 states and 31856 transitions. [2019-09-07 19:49:20,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2019-09-07 19:49:20,976 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:49:20,976 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-07 19:49:20,977 INFO L418 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:49:20,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:49:20,977 INFO L82 PathProgramCache]: Analyzing trace with hash 332222072, now seen corresponding path program 1 times [2019-09-07 19:49:20,977 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:49:20,978 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:49:20,979 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:49:20,980 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:49:20,980 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:49:21,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:49:21,423 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 19:49:21,424 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 19:49:21,424 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-07 19:49:21,425 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-07 19:49:21,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-07 19:49:21,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-07 19:49:21,426 INFO L87 Difference]: Start difference. First operand 21074 states and 31856 transitions. Second operand 5 states. [2019-09-07 19:49:31,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:49:31,883 INFO L93 Difference]: Finished difference Result 57016 states and 90789 transitions. [2019-09-07 19:49:31,883 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-07 19:49:31,883 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 270 [2019-09-07 19:49:31,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:49:32,027 INFO L225 Difference]: With dead ends: 57016 [2019-09-07 19:49:32,027 INFO L226 Difference]: Without dead ends: 35948 [2019-09-07 19:49:32,100 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-09-07 19:49:32,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35948 states. [2019-09-07 19:49:32,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35948 to 35838. [2019-09-07 19:49:32,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35838 states. [2019-09-07 19:49:32,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35838 states to 35838 states and 57671 transitions. [2019-09-07 19:49:32,953 INFO L78 Accepts]: Start accepts. Automaton has 35838 states and 57671 transitions. Word has length 270 [2019-09-07 19:49:32,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:49:32,954 INFO L475 AbstractCegarLoop]: Abstraction has 35838 states and 57671 transitions. [2019-09-07 19:49:32,954 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-07 19:49:32,954 INFO L276 IsEmpty]: Start isEmpty. Operand 35838 states and 57671 transitions. [2019-09-07 19:49:32,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2019-09-07 19:49:32,968 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:49:32,969 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:49:32,969 INFO L418 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:49:32,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:49:32,969 INFO L82 PathProgramCache]: Analyzing trace with hash -1504407380, now seen corresponding path program 1 times [2019-09-07 19:49:32,969 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:49:32,970 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:49:32,971 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:49:32,971 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:49:32,971 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:49:33,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:49:33,541 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 206 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 19:49:33,542 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 19:49:33,542 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 19:49:33,557 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 19:49:33,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:49:33,645 INFO L256 TraceCheckSpWp]: Trace formula consists of 497 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 19:49:33,663 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 19:49:34,907 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 131 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2019-09-07 19:49:34,921 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 19:49:34,921 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [11] total 12 [2019-09-07 19:49:34,922 INFO L454 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-09-07 19:49:34,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-09-07 19:49:34,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2019-09-07 19:49:34,924 INFO L87 Difference]: Start difference. First operand 35838 states and 57671 transitions. Second operand 12 states. [2019-09-07 19:49:58,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:49:58,302 INFO L93 Difference]: Finished difference Result 128319 states and 229001 transitions. [2019-09-07 19:49:58,302 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-09-07 19:49:58,302 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 280 [2019-09-07 19:49:58,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:49:58,745 INFO L225 Difference]: With dead ends: 128319 [2019-09-07 19:49:58,746 INFO L226 Difference]: Without dead ends: 93292 [2019-09-07 19:49:58,829 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 294 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=180, Invalid=420, Unknown=0, NotChecked=0, Total=600 [2019-09-07 19:49:58,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93292 states. [2019-09-07 19:50:01,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93292 to 89441. [2019-09-07 19:50:01,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89441 states. [2019-09-07 19:50:01,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89441 states to 89441 states and 131109 transitions. [2019-09-07 19:50:01,279 INFO L78 Accepts]: Start accepts. Automaton has 89441 states and 131109 transitions. Word has length 280 [2019-09-07 19:50:01,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:50:01,280 INFO L475 AbstractCegarLoop]: Abstraction has 89441 states and 131109 transitions. [2019-09-07 19:50:01,280 INFO L476 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-09-07 19:50:01,280 INFO L276 IsEmpty]: Start isEmpty. Operand 89441 states and 131109 transitions. [2019-09-07 19:50:01,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2019-09-07 19:50:01,296 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:50:01,296 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 19:50:01,297 INFO L418 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:50:01,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:50:01,297 INFO L82 PathProgramCache]: Analyzing trace with hash -1903373551, now seen corresponding path program 1 times [2019-09-07 19:50:01,297 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:50:01,297 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:50:01,298 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:50:01,298 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:50:01,298 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:50:01,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:50:01,493 INFO L134 CoverageAnalysis]: Checked inductivity of 411 backedges. 192 proven. 140 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2019-09-07 19:50:01,493 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 19:50:01,494 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) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 19:50:01,512 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:50:01,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:50:01,603 INFO L256 TraceCheckSpWp]: Trace formula consists of 568 conjuncts, 6 conjunts are in the unsatisfiable core [2019-09-07 19:50:01,610 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 19:50:01,735 INFO L134 CoverageAnalysis]: Checked inductivity of 411 backedges. 210 proven. 0 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2019-09-07 19:50:01,748 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 19:50:01,749 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2019-09-07 19:50:01,750 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 19:50:01,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 19:50:01,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-07 19:50:01,751 INFO L87 Difference]: Start difference. First operand 89441 states and 131109 transitions. Second operand 9 states. [2019-09-07 19:50:19,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:50:19,977 INFO L93 Difference]: Finished difference Result 228980 states and 357042 transitions. [2019-09-07 19:50:19,977 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-09-07 19:50:19,977 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 301 [2019-09-07 19:50:19,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:50:20,434 INFO L225 Difference]: With dead ends: 228980 [2019-09-07 19:50:20,434 INFO L226 Difference]: Without dead ends: 140348 [2019-09-07 19:50:20,547 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 309 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2019-09-07 19:50:20,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140348 states. [2019-09-07 19:50:22,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140348 to 139369. [2019-09-07 19:50:22,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139369 states. [2019-09-07 19:50:22,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139369 states to 139369 states and 197345 transitions. [2019-09-07 19:50:22,776 INFO L78 Accepts]: Start accepts. Automaton has 139369 states and 197345 transitions. Word has length 301 [2019-09-07 19:50:22,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:50:22,777 INFO L475 AbstractCegarLoop]: Abstraction has 139369 states and 197345 transitions. [2019-09-07 19:50:22,777 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 19:50:22,777 INFO L276 IsEmpty]: Start isEmpty. Operand 139369 states and 197345 transitions. [2019-09-07 19:50:22,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2019-09-07 19:50:22,800 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:50:22,800 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2019-09-07 19:50:22,800 INFO L418 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:50:22,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:50:22,801 INFO L82 PathProgramCache]: Analyzing trace with hash -577384136, now seen corresponding path program 1 times [2019-09-07 19:50:22,801 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:50:22,801 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:50:22,802 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:50:22,802 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:50:22,802 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:50:22,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:50:23,055 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 283 proven. 72 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2019-09-07 19:50:23,055 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 19:50:23,055 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) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 19:50:23,065 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:50:23,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:50:23,165 INFO L256 TraceCheckSpWp]: Trace formula consists of 617 conjuncts, 11 conjunts are in the unsatisfiable core [2019-09-07 19:50:23,171 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 19:50:25,828 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 223 proven. 0 refuted. 0 times theorem prover too weak. 202 trivial. 0 not checked. [2019-09-07 19:50:25,838 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 19:50:25,839 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2019-09-07 19:50:25,841 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 19:50:25,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 19:50:25,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-09-07 19:50:25,842 INFO L87 Difference]: Start difference. First operand 139369 states and 197345 transitions. Second operand 9 states. [2019-09-07 19:50:54,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:50:54,127 INFO L93 Difference]: Finished difference Result 363450 states and 560633 transitions. [2019-09-07 19:50:54,128 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2019-09-07 19:50:54,128 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 352 [2019-09-07 19:50:54,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:50:55,241 INFO L225 Difference]: With dead ends: 363450 [2019-09-07 19:50:55,241 INFO L226 Difference]: Without dead ends: 224890 [2019-09-07 19:50:55,398 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 434 GetRequests, 388 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 667 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=403, Invalid=1853, Unknown=0, NotChecked=0, Total=2256 [2019-09-07 19:50:55,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224890 states. [2019-09-07 19:51:02,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224890 to 217737. [2019-09-07 19:51:02,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217737 states. [2019-09-07 19:51:03,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217737 states to 217737 states and 309857 transitions. [2019-09-07 19:51:03,221 INFO L78 Accepts]: Start accepts. Automaton has 217737 states and 309857 transitions. Word has length 352 [2019-09-07 19:51:03,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:51:03,221 INFO L475 AbstractCegarLoop]: Abstraction has 217737 states and 309857 transitions. [2019-09-07 19:51:03,222 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 19:51:03,222 INFO L276 IsEmpty]: Start isEmpty. Operand 217737 states and 309857 transitions. [2019-09-07 19:51:03,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 395 [2019-09-07 19:51:03,243 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:51:03,243 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 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] [2019-09-07 19:51:03,243 INFO L418 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:51:03,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:51:03,244 INFO L82 PathProgramCache]: Analyzing trace with hash 1342073018, now seen corresponding path program 1 times [2019-09-07 19:51:03,244 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:51:03,244 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:51:03,245 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:51:03,245 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:51:03,245 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:51:03,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:51:03,538 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 488 proven. 2 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked. [2019-09-07 19:51:03,539 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 19:51:03,539 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) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 19:51:03,569 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:51:03,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:51:03,720 INFO L256 TraceCheckSpWp]: Trace formula consists of 705 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 19:51:03,726 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 19:51:03,892 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 488 proven. 2 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked. [2019-09-07 19:51:03,904 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 19:51:03,906 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 19:51:03,907 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 19:51:03,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 19:51:03,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-07 19:51:03,909 INFO L87 Difference]: Start difference. First operand 217737 states and 309857 transitions. Second operand 9 states. [2019-09-07 19:51:25,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:51:25,860 INFO L93 Difference]: Finished difference Result 465305 states and 728367 transitions. [2019-09-07 19:51:25,861 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-09-07 19:51:25,861 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 394 [2019-09-07 19:51:25,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:51:26,919 INFO L225 Difference]: With dead ends: 465305 [2019-09-07 19:51:26,919 INFO L226 Difference]: Without dead ends: 254128 [2019-09-07 19:51:27,173 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 417 GetRequests, 401 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2019-09-07 19:51:27,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254128 states. [2019-09-07 19:51:31,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254128 to 252073. [2019-09-07 19:51:31,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 252073 states. [2019-09-07 19:51:40,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252073 states to 252073 states and 364056 transitions. [2019-09-07 19:51:40,374 INFO L78 Accepts]: Start accepts. Automaton has 252073 states and 364056 transitions. Word has length 394 [2019-09-07 19:51:40,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:51:40,375 INFO L475 AbstractCegarLoop]: Abstraction has 252073 states and 364056 transitions. [2019-09-07 19:51:40,375 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 19:51:40,375 INFO L276 IsEmpty]: Start isEmpty. Operand 252073 states and 364056 transitions. [2019-09-07 19:51:40,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 436 [2019-09-07 19:51:40,393 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:51:40,394 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2019-09-07 19:51:40,394 INFO L418 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:51:40,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:51:40,394 INFO L82 PathProgramCache]: Analyzing trace with hash -997251513, now seen corresponding path program 1 times [2019-09-07 19:51:40,394 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:51:40,394 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:51:40,395 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:51:40,395 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:51:40,396 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:51:40,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:51:40,647 INFO L134 CoverageAnalysis]: Checked inductivity of 716 backedges. 265 proven. 0 refuted. 0 times theorem prover too weak. 451 trivial. 0 not checked. [2019-09-07 19:51:40,647 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 19:51:40,647 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-07 19:51:40,648 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-07 19:51:40,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-07 19:51:40,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 19:51:40,649 INFO L87 Difference]: Start difference. First operand 252073 states and 364056 transitions. Second operand 3 states. [2019-09-07 19:51:54,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:51:54,136 INFO L93 Difference]: Finished difference Result 541025 states and 801258 transitions. [2019-09-07 19:51:54,136 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-07 19:51:54,136 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 435 [2019-09-07 19:51:54,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:51:55,272 INFO L225 Difference]: With dead ends: 541025 [2019-09-07 19:51:55,272 INFO L226 Difference]: Without dead ends: 307815 [2019-09-07 19:51:55,610 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 19:51:56,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307815 states. [2019-09-07 19:52:01,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307815 to 303775. [2019-09-07 19:52:01,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 303775 states. [2019-09-07 19:52:01,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303775 states to 303775 states and 429768 transitions. [2019-09-07 19:52:01,889 INFO L78 Accepts]: Start accepts. Automaton has 303775 states and 429768 transitions. Word has length 435 [2019-09-07 19:52:01,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:52:01,890 INFO L475 AbstractCegarLoop]: Abstraction has 303775 states and 429768 transitions. [2019-09-07 19:52:01,890 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-07 19:52:01,890 INFO L276 IsEmpty]: Start isEmpty. Operand 303775 states and 429768 transitions. [2019-09-07 19:52:01,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 512 [2019-09-07 19:52:01,926 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:52:01,926 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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] [2019-09-07 19:52:01,927 INFO L418 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:52:01,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:52:01,927 INFO L82 PathProgramCache]: Analyzing trace with hash 1646729698, now seen corresponding path program 1 times [2019-09-07 19:52:01,927 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:52:01,927 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:52:01,928 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:52:01,928 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:52:01,928 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:52:01,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:52:02,241 INFO L134 CoverageAnalysis]: Checked inductivity of 846 backedges. 560 proven. 2 refuted. 0 times theorem prover too weak. 284 trivial. 0 not checked. [2019-09-07 19:52:02,241 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 19:52:02,241 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) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 19:52:07,363 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:52:07,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:52:07,509 INFO L256 TraceCheckSpWp]: Trace formula consists of 828 conjuncts, 9 conjunts are in the unsatisfiable core [2019-09-07 19:52:07,518 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 19:52:07,795 INFO L134 CoverageAnalysis]: Checked inductivity of 846 backedges. 525 proven. 2 refuted. 0 times theorem prover too weak. 319 trivial. 0 not checked. [2019-09-07 19:52:07,799 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 19:52:07,799 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 11 [2019-09-07 19:52:07,800 INFO L454 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-09-07 19:52:07,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-09-07 19:52:07,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2019-09-07 19:52:07,801 INFO L87 Difference]: Start difference. First operand 303775 states and 429768 transitions. Second operand 11 states. [2019-09-07 19:53:25,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:53:25,903 INFO L93 Difference]: Finished difference Result 700812 states and 1352398 transitions. [2019-09-07 19:53:25,903 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2019-09-07 19:53:25,904 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 511 [2019-09-07 19:53:25,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:53:28,784 INFO L225 Difference]: With dead ends: 700812 [2019-09-07 19:53:28,785 INFO L226 Difference]: Without dead ends: 397846 [2019-09-07 19:53:30,518 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 672 GetRequests, 580 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3291 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1403, Invalid=7339, Unknown=0, NotChecked=0, Total=8742 [2019-09-07 19:53:30,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397846 states. [2019-09-07 19:53:51,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397846 to 381036. [2019-09-07 19:53:51,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 381036 states. [2019-09-07 19:54:02,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381036 states to 381036 states and 613442 transitions. [2019-09-07 19:54:02,803 INFO L78 Accepts]: Start accepts. Automaton has 381036 states and 613442 transitions. Word has length 511 [2019-09-07 19:54:02,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:54:02,803 INFO L475 AbstractCegarLoop]: Abstraction has 381036 states and 613442 transitions. [2019-09-07 19:54:02,803 INFO L476 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-09-07 19:54:02,804 INFO L276 IsEmpty]: Start isEmpty. Operand 381036 states and 613442 transitions. [2019-09-07 19:54:02,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 549 [2019-09-07 19:54:02,860 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:54:02,860 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-07 19:54:02,860 INFO L418 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:54:02,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:54:02,861 INFO L82 PathProgramCache]: Analyzing trace with hash 2002336775, now seen corresponding path program 1 times [2019-09-07 19:54:02,861 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:54:02,861 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:54:02,864 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:54:02,864 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:54:02,865 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:54:02,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:54:05,287 INFO L134 CoverageAnalysis]: Checked inductivity of 481 backedges. 263 proven. 214 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-09-07 19:54:05,288 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 19:54:05,288 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) [2019-09-07 19:54:05,301 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 19:54:05,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:54:05,460 INFO L256 TraceCheckSpWp]: Trace formula consists of 814 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 19:54:05,471 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 19:54:05,597 INFO L134 CoverageAnalysis]: Checked inductivity of 481 backedges. 198 proven. 0 refuted. 0 times theorem prover too weak. 283 trivial. 0 not checked. [2019-09-07 19:54:05,601 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 19:54:05,602 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2019-09-07 19:54:05,603 INFO L454 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-09-07 19:54:05,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-09-07 19:54:05,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2019-09-07 19:54:05,604 INFO L87 Difference]: Start difference. First operand 381036 states and 613442 transitions. Second operand 11 states. [2019-09-07 19:54:44,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:54:44,167 INFO L93 Difference]: Finished difference Result 787397 states and 1271514 transitions. [2019-09-07 19:54:44,167 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2019-09-07 19:54:44,167 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 548 [2019-09-07 19:54:44,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:54:53,556 INFO L225 Difference]: With dead ends: 787397 [2019-09-07 19:54:53,556 INFO L226 Difference]: Without dead ends: 406358 [2019-09-07 19:54:54,224 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 620 GetRequests, 579 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 492 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=366, Invalid=1356, Unknown=0, NotChecked=0, Total=1722 [2019-09-07 19:54:54,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406358 states. [2019-09-07 19:55:02,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406358 to 399120. [2019-09-07 19:55:02,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 399120 states. [2019-09-07 19:55:04,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399120 states to 399120 states and 532101 transitions. [2019-09-07 19:55:04,885 INFO L78 Accepts]: Start accepts. Automaton has 399120 states and 532101 transitions. Word has length 548 [2019-09-07 19:55:04,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:55:04,886 INFO L475 AbstractCegarLoop]: Abstraction has 399120 states and 532101 transitions. [2019-09-07 19:55:04,886 INFO L476 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-09-07 19:55:04,886 INFO L276 IsEmpty]: Start isEmpty. Operand 399120 states and 532101 transitions. [2019-09-07 19:55:04,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 591 [2019-09-07 19:55:04,943 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:55:04,944 INFO L399 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 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] [2019-09-07 19:55:04,944 INFO L418 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:55:04,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:55:04,945 INFO L82 PathProgramCache]: Analyzing trace with hash 345602840, now seen corresponding path program 1 times [2019-09-07 19:55:04,945 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:55:04,945 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:55:04,946 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:55:04,946 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:55:04,946 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:55:05,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:55:05,526 INFO L134 CoverageAnalysis]: Checked inductivity of 1094 backedges. 479 proven. 140 refuted. 0 times theorem prover too weak. 475 trivial. 0 not checked. [2019-09-07 19:55:05,526 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 19:55:05,526 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 19:55:05,558 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:55:07,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:55:07,327 INFO L256 TraceCheckSpWp]: Trace formula consists of 947 conjuncts, 5 conjunts are in the unsatisfiable core [2019-09-07 19:55:07,335 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 19:55:07,615 INFO L134 CoverageAnalysis]: Checked inductivity of 1094 backedges. 651 proven. 2 refuted. 0 times theorem prover too weak. 441 trivial. 0 not checked. [2019-09-07 19:55:07,621 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 19:55:07,621 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 19:55:07,622 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 19:55:07,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 19:55:07,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-09-07 19:55:07,623 INFO L87 Difference]: Start difference. First operand 399120 states and 532101 transitions. Second operand 9 states. [2019-09-07 19:55:54,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:55:54,381 INFO L93 Difference]: Finished difference Result 960425 states and 1488166 transitions. [2019-09-07 19:55:54,382 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-09-07 19:55:54,382 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 590 [2019-09-07 19:55:54,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:55:58,109 INFO L225 Difference]: With dead ends: 960425 [2019-09-07 19:55:58,110 INFO L226 Difference]: Without dead ends: 587310 [2019-09-07 19:55:58,792 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 622 GetRequests, 601 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=146, Invalid=360, Unknown=0, NotChecked=0, Total=506 [2019-09-07 19:55:59,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 587310 states. [2019-09-07 19:56:22,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 587310 to 563561. [2019-09-07 19:56:22,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 563561 states. [2019-09-07 19:56:25,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563561 states to 563561 states and 725522 transitions. [2019-09-07 19:56:25,509 INFO L78 Accepts]: Start accepts. Automaton has 563561 states and 725522 transitions. Word has length 590 [2019-09-07 19:56:25,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:56:25,510 INFO L475 AbstractCegarLoop]: Abstraction has 563561 states and 725522 transitions. [2019-09-07 19:56:25,510 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 19:56:25,510 INFO L276 IsEmpty]: Start isEmpty. Operand 563561 states and 725522 transitions. [2019-09-07 19:56:25,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 644 [2019-09-07 19:56:25,577 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:56:25,578 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 19:56:25,578 INFO L418 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:56:25,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:56:25,578 INFO L82 PathProgramCache]: Analyzing trace with hash -790132865, now seen corresponding path program 1 times [2019-09-07 19:56:25,578 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:56:25,578 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:56:25,579 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:56:25,579 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:56:25,579 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:56:25,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:56:27,901 INFO L134 CoverageAnalysis]: Checked inductivity of 944 backedges. 265 proven. 475 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2019-09-07 19:56:27,902 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 19:56:27,902 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-07 19:56:27,925 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 19:56:28,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:56:28,097 INFO L256 TraceCheckSpWp]: Trace formula consists of 967 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 19:56:28,107 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 19:56:28,317 INFO L134 CoverageAnalysis]: Checked inductivity of 944 backedges. 721 proven. 2 refuted. 0 times theorem prover too weak. 221 trivial. 0 not checked. [2019-09-07 19:56:28,321 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 19:56:28,321 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 19:56:28,322 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 19:56:28,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 19:56:28,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-07 19:56:28,323 INFO L87 Difference]: Start difference. First operand 563561 states and 725522 transitions. Second operand 9 states. [2019-09-07 19:56:58,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:56:58,046 INFO L93 Difference]: Finished difference Result 988935 states and 1249244 transitions. [2019-09-07 19:56:58,047 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-09-07 19:56:58,047 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 643 [2019-09-07 19:56:58,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:56:59,381 INFO L225 Difference]: With dead ends: 988935 [2019-09-07 19:56:59,382 INFO L226 Difference]: Without dead ends: 454006 [2019-09-07 19:57:00,265 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 663 GetRequests, 648 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2019-09-07 19:57:00,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454006 states. [2019-09-07 19:57:06,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454006 to 430410. [2019-09-07 19:57:06,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 430410 states. [2019-09-07 19:57:08,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430410 states to 430410 states and 504576 transitions. [2019-09-07 19:57:08,653 INFO L78 Accepts]: Start accepts. Automaton has 430410 states and 504576 transitions. Word has length 643 [2019-09-07 19:57:08,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:57:08,654 INFO L475 AbstractCegarLoop]: Abstraction has 430410 states and 504576 transitions. [2019-09-07 19:57:08,654 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 19:57:08,654 INFO L276 IsEmpty]: Start isEmpty. Operand 430410 states and 504576 transitions. [2019-09-07 19:57:08,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 646 [2019-09-07 19:57:08,691 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:57:08,692 INFO L399 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2019-09-07 19:57:08,692 INFO L418 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:57:08,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:57:08,692 INFO L82 PathProgramCache]: Analyzing trace with hash 391562830, now seen corresponding path program 1 times [2019-09-07 19:57:08,693 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:57:08,693 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:57:08,693 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:57:08,694 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:57:08,694 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:57:08,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:57:09,353 INFO L134 CoverageAnalysis]: Checked inductivity of 1320 backedges. 747 proven. 2 refuted. 0 times theorem prover too weak. 571 trivial. 0 not checked. [2019-09-07 19:57:09,353 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 19:57:09,353 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 19:57:09,368 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:57:09,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:57:09,538 INFO L256 TraceCheckSpWp]: Trace formula consists of 1011 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 19:57:09,546 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 19:57:10,665 INFO L134 CoverageAnalysis]: Checked inductivity of 1320 backedges. 747 proven. 2 refuted. 0 times theorem prover too weak. 571 trivial. 0 not checked. [2019-09-07 19:57:10,669 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 19:57:10,669 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 19:57:10,671 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 19:57:10,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 19:57:10,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-09-07 19:57:10,672 INFO L87 Difference]: Start difference. First operand 430410 states and 504576 transitions. Second operand 9 states. [2019-09-07 19:57:37,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:57:37,174 INFO L93 Difference]: Finished difference Result 980893 states and 1129739 transitions. [2019-09-07 19:57:37,175 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2019-09-07 19:57:37,175 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 645 [2019-09-07 19:57:37,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:57:38,853 INFO L225 Difference]: With dead ends: 980893 [2019-09-07 19:57:38,854 INFO L226 Difference]: Without dead ends: 557746 [2019-09-07 19:57:39,311 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 706 GetRequests, 671 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 361 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=283, Invalid=1049, Unknown=0, NotChecked=0, Total=1332 [2019-09-07 19:57:39,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557746 states. [2019-09-07 19:57:53,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557746 to 534983. [2019-09-07 19:57:53,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 534983 states. [2019-09-07 19:57:54,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 534983 states to 534983 states and 585672 transitions. [2019-09-07 19:57:54,946 INFO L78 Accepts]: Start accepts. Automaton has 534983 states and 585672 transitions. Word has length 645 [2019-09-07 19:57:54,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:57:54,947 INFO L475 AbstractCegarLoop]: Abstraction has 534983 states and 585672 transitions. [2019-09-07 19:57:54,947 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 19:57:54,947 INFO L276 IsEmpty]: Start isEmpty. Operand 534983 states and 585672 transitions. [2019-09-07 19:57:54,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 756 [2019-09-07 19:57:54,984 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:57:54,986 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:57:54,986 INFO L418 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:57:54,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:57:54,986 INFO L82 PathProgramCache]: Analyzing trace with hash 299427180, now seen corresponding path program 1 times [2019-09-07 19:57:54,987 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:57:54,987 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:57:54,987 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:57:54,987 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:57:54,988 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:57:55,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:58:01,558 INFO L134 CoverageAnalysis]: Checked inductivity of 870 backedges. 411 proven. 73 refuted. 0 times theorem prover too weak. 386 trivial. 0 not checked. [2019-09-07 19:58:01,558 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 19:58:01,558 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 19:58:01,569 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:58:01,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:58:01,762 INFO L256 TraceCheckSpWp]: Trace formula consists of 1103 conjuncts, 5 conjunts are in the unsatisfiable core [2019-09-07 19:58:01,772 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 19:58:02,347 INFO L134 CoverageAnalysis]: Checked inductivity of 870 backedges. 265 proven. 0 refuted. 0 times theorem prover too weak. 605 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (12)] Exception during sending of exit command (exit): Stream closed [2019-09-07 19:58:02,363 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 19:58:02,363 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2019-09-07 19:58:02,364 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-07 19:58:02,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-07 19:58:02,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-09-07 19:58:02,365 INFO L87 Difference]: Start difference. First operand 534983 states and 585672 transitions. Second operand 7 states. [2019-09-07 19:58:22,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:58:22,140 INFO L93 Difference]: Finished difference Result 1149168 states and 1285275 transitions. [2019-09-07 19:58:22,141 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-09-07 19:58:22,141 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 755 [2019-09-07 19:58:22,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:58:25,015 INFO L225 Difference]: With dead ends: 1149168 [2019-09-07 19:58:25,015 INFO L226 Difference]: Without dead ends: 660970 [2019-09-07 19:58:25,457 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 771 GetRequests, 760 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2019-09-07 19:58:25,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 660970 states. [2019-09-07 19:58:43,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 660970 to 618565. [2019-09-07 19:58:43,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 618565 states. [2019-09-07 19:58:44,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 618565 states to 618565 states and 673282 transitions. [2019-09-07 19:58:44,926 INFO L78 Accepts]: Start accepts. Automaton has 618565 states and 673282 transitions. Word has length 755 [2019-09-07 19:58:44,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:58:44,927 INFO L475 AbstractCegarLoop]: Abstraction has 618565 states and 673282 transitions. [2019-09-07 19:58:44,927 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-07 19:58:44,927 INFO L276 IsEmpty]: Start isEmpty. Operand 618565 states and 673282 transitions. [2019-09-07 19:58:44,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 799 [2019-09-07 19:58:44,980 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:58:44,980 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2019-09-07 19:58:44,981 INFO L418 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:58:44,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:58:44,981 INFO L82 PathProgramCache]: Analyzing trace with hash -388088346, now seen corresponding path program 1 times [2019-09-07 19:58:44,981 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:58:44,982 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:58:44,982 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:58:44,982 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:58:44,983 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:58:45,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:58:52,200 INFO L134 CoverageAnalysis]: Checked inductivity of 945 backedges. 265 proven. 0 refuted. 0 times theorem prover too weak. 680 trivial. 0 not checked. [2019-09-07 19:58:52,200 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 19:58:52,200 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-07 19:58:52,201 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-07 19:58:52,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-07 19:58:52,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-07 19:58:52,201 INFO L87 Difference]: Start difference. First operand 618565 states and 673282 transitions. Second operand 4 states. [2019-09-07 19:59:03,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:59:03,175 INFO L93 Difference]: Finished difference Result 1284969 states and 1398346 transitions. [2019-09-07 19:59:03,176 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-07 19:59:03,176 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 798 [2019-09-07 19:59:03,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:59:06,138 INFO L225 Difference]: With dead ends: 1284969 [2019-09-07 19:59:06,138 INFO L226 Difference]: Without dead ends: 699372 [2019-09-07 19:59:06,572 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 19:59:07,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 699372 states.