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/Problem18_label55.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-07 22:48:25,627 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-07 22:48:25,630 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-07 22:48:25,641 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-07 22:48:25,651 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-07 22:48:25,652 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-07 22:48:25,653 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-07 22:48:25,654 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-07 22:48:25,655 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-07 22:48:25,655 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-07 22:48:25,657 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-07 22:48:25,659 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-07 22:48:25,660 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-07 22:48:25,661 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-07 22:48:25,662 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-07 22:48:25,663 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-07 22:48:25,665 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-07 22:48:25,673 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-07 22:48:25,674 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-07 22:48:25,675 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-07 22:48:25,675 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 22:48:25,692 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-07 22:48:25,693 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-07 22:48:25,694 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-07 22:48:25,694 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-07 22:48:25,694 INFO L138 SettingsManager]: * Use SBE=true [2019-09-07 22:48:25,694 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-07 22:48:25,695 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-07 22:48:25,695 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-07 22:48:25,695 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-07 22:48:25,695 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-07 22:48:25,695 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-07 22:48:25,696 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-07 22:48:25,696 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-07 22:48:25,696 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-07 22:48:25,696 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-07 22:48:25,696 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-07 22:48:25,697 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-07 22:48:25,697 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-07 22:48:25,697 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-07 22:48:25,697 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-07 22:48:25,697 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-07 22:48:25,698 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-07 22:48:25,698 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-07 22:48:25,698 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-07 22:48:25,698 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-07 22:48:25,699 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-07 22:48:25,699 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-07 22:48:25,699 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-07 22:48:25,699 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-07 22:48:25,727 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-07 22:48:25,740 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-07 22:48:25,743 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-07 22:48:25,745 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-07 22:48:25,745 INFO L275 PluginConnector]: CDTParser initialized [2019-09-07 22:48:25,746 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label55.c [2019-09-07 22:48:25,818 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a87cdd26d/cd1a91defb904fa180b60261853fbe72/FLAGb5d925621 [2019-09-07 22:48:26,516 INFO L306 CDTParser]: Found 1 translation units. [2019-09-07 22:48:26,517 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label55.c [2019-09-07 22:48:26,539 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a87cdd26d/cd1a91defb904fa180b60261853fbe72/FLAGb5d925621 [2019-09-07 22:48:26,644 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a87cdd26d/cd1a91defb904fa180b60261853fbe72 [2019-09-07 22:48:26,655 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-07 22:48:26,657 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-07 22:48:26,659 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-07 22:48:26,659 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-07 22:48:26,663 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-07 22:48:26,664 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 10:48:26" (1/1) ... [2019-09-07 22:48:26,667 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a823ade and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 10:48:26, skipping insertion in model container [2019-09-07 22:48:26,667 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 10:48:26" (1/1) ... [2019-09-07 22:48:26,675 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-07 22:48:26,813 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-07 22:48:27,912 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-07 22:48:27,920 INFO L188 MainTranslator]: Completed pre-run [2019-09-07 22:48:28,373 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-07 22:48:28,399 INFO L192 MainTranslator]: Completed translation [2019-09-07 22:48:28,399 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 10:48:28 WrapperNode [2019-09-07 22:48:28,399 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-07 22:48:28,400 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-07 22:48:28,400 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-07 22:48:28,401 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-07 22:48:28,415 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 10:48:28" (1/1) ... [2019-09-07 22:48:28,416 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 10:48:28" (1/1) ... [2019-09-07 22:48:28,481 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 10:48:28" (1/1) ... [2019-09-07 22:48:28,483 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 10:48:28" (1/1) ... [2019-09-07 22:48:28,590 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 10:48:28" (1/1) ... [2019-09-07 22:48:28,627 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 10:48:28" (1/1) ... [2019-09-07 22:48:28,660 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 10:48:28" (1/1) ... [2019-09-07 22:48:28,697 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-07 22:48:28,697 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-07 22:48:28,698 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-07 22:48:28,698 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-07 22:48:28,699 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 10:48:28" (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 22:48:28,826 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-07 22:48:28,827 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-07 22:48:28,827 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-09-07 22:48:28,827 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-09-07 22:48:28,827 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-09-07 22:48:28,827 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-07 22:48:28,828 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-09-07 22:48:28,828 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-09-07 22:48:28,828 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-09-07 22:48:28,829 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-07 22:48:28,829 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-07 22:48:28,829 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-07 22:48:28,830 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-07 22:48:28,830 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-07 22:48:28,831 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-07 22:48:32,611 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-07 22:48:32,611 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-07 22:48:32,613 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 10:48:32 BoogieIcfgContainer [2019-09-07 22:48:32,613 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-07 22:48:32,615 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-07 22:48:32,615 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-07 22:48:32,618 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-07 22:48:32,618 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.09 10:48:26" (1/3) ... [2019-09-07 22:48:32,619 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6718e0e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 10:48:32, skipping insertion in model container [2019-09-07 22:48:32,619 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 10:48:28" (2/3) ... [2019-09-07 22:48:32,620 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6718e0e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 10:48:32, skipping insertion in model container [2019-09-07 22:48:32,620 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 10:48:32" (3/3) ... [2019-09-07 22:48:32,622 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem18_label55.c [2019-09-07 22:48:32,633 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-07 22:48:32,642 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-07 22:48:32,661 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-07 22:48:32,788 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-07 22:48:32,789 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-07 22:48:32,790 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-07 22:48:32,790 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-07 22:48:32,790 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-07 22:48:32,790 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-07 22:48:32,791 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-07 22:48:32,791 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-07 22:48:32,791 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-07 22:48:32,841 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states. [2019-09-07 22:48:32,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-09-07 22:48:32,849 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 22:48:32,850 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 22:48:32,852 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 22:48:32,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 22:48:32,858 INFO L82 PathProgramCache]: Analyzing trace with hash 184890441, now seen corresponding path program 1 times [2019-09-07 22:48:32,860 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 22:48:32,860 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 22:48:32,914 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:48:32,914 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:48:32,915 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:48:32,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:48:33,157 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 22:48:33,163 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 22:48:33,163 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-07 22:48:33,168 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-07 22:48:33,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-07 22:48:33,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 22:48:33,186 INFO L87 Difference]: Start difference. First operand 774 states. Second operand 3 states. [2019-09-07 22:48:37,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 22:48:37,444 INFO L93 Difference]: Finished difference Result 2248 states and 4319 transitions. [2019-09-07 22:48:37,445 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-07 22:48:37,446 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2019-09-07 22:48:37,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 22:48:37,481 INFO L225 Difference]: With dead ends: 2248 [2019-09-07 22:48:37,481 INFO L226 Difference]: Without dead ends: 1412 [2019-09-07 22:48:37,491 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 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 22:48:37,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1412 states. [2019-09-07 22:48:37,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1412 to 1412. [2019-09-07 22:48:37,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1412 states. [2019-09-07 22:48:37,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1412 states to 1412 states and 2558 transitions. [2019-09-07 22:48:37,633 INFO L78 Accepts]: Start accepts. Automaton has 1412 states and 2558 transitions. Word has length 18 [2019-09-07 22:48:37,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 22:48:37,634 INFO L475 AbstractCegarLoop]: Abstraction has 1412 states and 2558 transitions. [2019-09-07 22:48:37,634 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-07 22:48:37,634 INFO L276 IsEmpty]: Start isEmpty. Operand 1412 states and 2558 transitions. [2019-09-07 22:48:37,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2019-09-07 22:48:37,639 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 22:48:37,640 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-07 22:48:37,640 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 22:48:37,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 22:48:37,641 INFO L82 PathProgramCache]: Analyzing trace with hash -1814973760, now seen corresponding path program 1 times [2019-09-07 22:48:37,641 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 22:48:37,641 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 22:48:37,642 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:48:37,642 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:48:37,643 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:48:37,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:48:37,897 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 22:48:37,898 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 22:48:37,898 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-07 22:48:37,900 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-07 22:48:37,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-07 22:48:37,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-09-07 22:48:37,900 INFO L87 Difference]: Start difference. First operand 1412 states and 2558 transitions. Second operand 6 states. [2019-09-07 22:48:43,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 22:48:43,012 INFO L93 Difference]: Finished difference Result 4291 states and 7809 transitions. [2019-09-07 22:48:43,013 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-07 22:48:43,013 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 106 [2019-09-07 22:48:43,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 22:48:43,038 INFO L225 Difference]: With dead ends: 4291 [2019-09-07 22:48:43,038 INFO L226 Difference]: Without dead ends: 2885 [2019-09-07 22:48:43,042 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 22:48:43,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2885 states. [2019-09-07 22:48:43,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2885 to 2864. [2019-09-07 22:48:43,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2864 states. [2019-09-07 22:48:43,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2864 states to 2864 states and 4821 transitions. [2019-09-07 22:48:43,158 INFO L78 Accepts]: Start accepts. Automaton has 2864 states and 4821 transitions. Word has length 106 [2019-09-07 22:48:43,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 22:48:43,160 INFO L475 AbstractCegarLoop]: Abstraction has 2864 states and 4821 transitions. [2019-09-07 22:48:43,160 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-07 22:48:43,160 INFO L276 IsEmpty]: Start isEmpty. Operand 2864 states and 4821 transitions. [2019-09-07 22:48:43,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2019-09-07 22:48:43,175 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 22:48:43,175 INFO L399 BasicCegarLoop]: trace histogram [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 22:48:43,175 INFO L418 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 22:48:43,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 22:48:43,176 INFO L82 PathProgramCache]: Analyzing trace with hash -1781906559, now seen corresponding path program 1 times [2019-09-07 22:48:43,176 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 22:48:43,178 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 22:48:43,179 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:48:43,180 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:48:43,180 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:48:43,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:48:43,493 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 22:48:43,493 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 22:48:43,494 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-07 22:48:43,494 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-07 22:48:43,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-07 22:48:43,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-09-07 22:48:43,495 INFO L87 Difference]: Start difference. First operand 2864 states and 4821 transitions. Second operand 6 states. [2019-09-07 22:48:49,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 22:48:49,047 INFO L93 Difference]: Finished difference Result 8688 states and 14937 transitions. [2019-09-07 22:48:49,054 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-07 22:48:49,055 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 153 [2019-09-07 22:48:49,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 22:48:49,096 INFO L225 Difference]: With dead ends: 8688 [2019-09-07 22:48:49,096 INFO L226 Difference]: Without dead ends: 5830 [2019-09-07 22:48:49,106 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 22:48:49,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5830 states. [2019-09-07 22:48:49,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5830 to 5770. [2019-09-07 22:48:49,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5770 states. [2019-09-07 22:48:49,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5770 states to 5770 states and 9726 transitions. [2019-09-07 22:48:49,304 INFO L78 Accepts]: Start accepts. Automaton has 5770 states and 9726 transitions. Word has length 153 [2019-09-07 22:48:49,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 22:48:49,305 INFO L475 AbstractCegarLoop]: Abstraction has 5770 states and 9726 transitions. [2019-09-07 22:48:49,307 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-07 22:48:49,307 INFO L276 IsEmpty]: Start isEmpty. Operand 5770 states and 9726 transitions. [2019-09-07 22:48:49,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2019-09-07 22:48:49,311 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 22:48:49,312 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-07 22:48:49,313 INFO L418 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 22:48:49,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 22:48:49,313 INFO L82 PathProgramCache]: Analyzing trace with hash 1527314141, now seen corresponding path program 1 times [2019-09-07 22:48:49,313 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 22:48:49,313 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 22:48:49,314 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:48:49,314 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:48:49,315 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:48:49,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:48:49,537 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 22:48:49,538 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 22:48:49,538 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-07 22:48:49,539 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-07 22:48:49,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-07 22:48:49,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-09-07 22:48:49,540 INFO L87 Difference]: Start difference. First operand 5770 states and 9726 transitions. Second operand 6 states. [2019-09-07 22:48:54,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 22:48:54,218 INFO L93 Difference]: Finished difference Result 13779 states and 23272 transitions. [2019-09-07 22:48:54,218 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-07 22:48:54,219 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 155 [2019-09-07 22:48:54,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 22:48:54,260 INFO L225 Difference]: With dead ends: 13779 [2019-09-07 22:48:54,260 INFO L226 Difference]: Without dead ends: 8015 [2019-09-07 22:48:54,276 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 22:48:54,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8015 states. [2019-09-07 22:48:54,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8015 to 7976. [2019-09-07 22:48:54,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7976 states. [2019-09-07 22:48:54,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7976 states to 7976 states and 11297 transitions. [2019-09-07 22:48:54,490 INFO L78 Accepts]: Start accepts. Automaton has 7976 states and 11297 transitions. Word has length 155 [2019-09-07 22:48:54,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 22:48:54,491 INFO L475 AbstractCegarLoop]: Abstraction has 7976 states and 11297 transitions. [2019-09-07 22:48:54,491 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-07 22:48:54,491 INFO L276 IsEmpty]: Start isEmpty. Operand 7976 states and 11297 transitions. [2019-09-07 22:48:54,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2019-09-07 22:48:54,495 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 22:48:54,495 INFO L399 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 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 22:48:54,496 INFO L418 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 22:48:54,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 22:48:54,496 INFO L82 PathProgramCache]: Analyzing trace with hash 420343859, now seen corresponding path program 1 times [2019-09-07 22:48:54,496 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 22:48:54,496 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 22:48:54,497 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:48:54,497 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:48:54,497 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:48:54,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:48:54,633 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2019-09-07 22:48:54,634 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 22:48:54,634 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-07 22:48:54,634 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-07 22:48:54,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-07 22:48:54,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-07 22:48:54,635 INFO L87 Difference]: Start difference. First operand 7976 states and 11297 transitions. Second operand 4 states. [2019-09-07 22:49:01,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 22:49:01,739 INFO L93 Difference]: Finished difference Result 24523 states and 35154 transitions. [2019-09-07 22:49:01,744 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-07 22:49:01,745 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 212 [2019-09-07 22:49:01,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 22:49:01,821 INFO L225 Difference]: With dead ends: 24523 [2019-09-07 22:49:01,821 INFO L226 Difference]: Without dead ends: 16553 [2019-09-07 22:49:01,844 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 22:49:01,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16553 states. [2019-09-07 22:49:02,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16553 to 16553. [2019-09-07 22:49:02,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16553 states. [2019-09-07 22:49:02,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16553 states to 16553 states and 22712 transitions. [2019-09-07 22:49:02,260 INFO L78 Accepts]: Start accepts. Automaton has 16553 states and 22712 transitions. Word has length 212 [2019-09-07 22:49:02,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 22:49:02,260 INFO L475 AbstractCegarLoop]: Abstraction has 16553 states and 22712 transitions. [2019-09-07 22:49:02,261 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-07 22:49:02,261 INFO L276 IsEmpty]: Start isEmpty. Operand 16553 states and 22712 transitions. [2019-09-07 22:49:02,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2019-09-07 22:49:02,268 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 22:49:02,268 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-07 22:49:02,269 INFO L418 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 22:49:02,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 22:49:02,269 INFO L82 PathProgramCache]: Analyzing trace with hash 70935579, now seen corresponding path program 1 times [2019-09-07 22:49:02,269 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 22:49:02,269 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 22:49:02,271 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:49:02,271 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:49:02,271 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:49:02,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:49:02,556 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 114 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-09-07 22:49:02,557 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 22:49:02,557 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 22:49:02,590 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:49:02,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:49:02,711 INFO L256 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 22:49:02,738 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 22:49:02,870 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2019-09-07 22:49:02,883 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 22:49:02,884 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2019-09-07 22:49:02,885 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-07 22:49:02,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-07 22:49:02,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-09-07 22:49:02,887 INFO L87 Difference]: Start difference. First operand 16553 states and 22712 transitions. Second operand 6 states. [2019-09-07 22:49:09,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 22:49:09,710 INFO L93 Difference]: Finished difference Result 33131 states and 45567 transitions. [2019-09-07 22:49:09,711 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-07 22:49:09,711 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 256 [2019-09-07 22:49:09,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 22:49:09,785 INFO L225 Difference]: With dead ends: 33131 [2019-09-07 22:49:09,786 INFO L226 Difference]: Without dead ends: 16584 [2019-09-07 22:49:09,837 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 260 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2019-09-07 22:49:09,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16584 states. [2019-09-07 22:49:10,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16584 to 15851. [2019-09-07 22:49:10,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15851 states. [2019-09-07 22:49:10,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15851 states to 15851 states and 20152 transitions. [2019-09-07 22:49:10,556 INFO L78 Accepts]: Start accepts. Automaton has 15851 states and 20152 transitions. Word has length 256 [2019-09-07 22:49:10,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 22:49:10,559 INFO L475 AbstractCegarLoop]: Abstraction has 15851 states and 20152 transitions. [2019-09-07 22:49:10,559 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-07 22:49:10,560 INFO L276 IsEmpty]: Start isEmpty. Operand 15851 states and 20152 transitions. [2019-09-07 22:49:10,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 562 [2019-09-07 22:49:10,618 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 22:49:10,619 INFO L399 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:49:10,620 INFO L418 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 22:49:10,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 22:49:10,620 INFO L82 PathProgramCache]: Analyzing trace with hash 2019024968, now seen corresponding path program 1 times [2019-09-07 22:49:10,621 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 22:49:10,622 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 22:49:10,624 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:49:10,624 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:49:10,624 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:49:10,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:49:11,372 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 126 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 22:49:11,372 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 22:49:11,373 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 22:49:11,392 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 22:49:11,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:49:11,628 INFO L256 TraceCheckSpWp]: Trace formula consists of 767 conjuncts, 6 conjunts are in the unsatisfiable core [2019-09-07 22:49:11,651 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 22:49:11,977 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 126 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 22:49:11,983 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 22:49:11,984 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 22:49:11,986 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 22:49:11,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 22:49:11,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-07 22:49:11,989 INFO L87 Difference]: Start difference. First operand 15851 states and 20152 transitions. Second operand 9 states. [2019-09-07 22:49:22,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 22:49:22,383 INFO L93 Difference]: Finished difference Result 47271 states and 64111 transitions. [2019-09-07 22:49:22,383 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-09-07 22:49:22,384 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 561 [2019-09-07 22:49:22,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 22:49:22,557 INFO L225 Difference]: With dead ends: 47271 [2019-09-07 22:49:22,558 INFO L226 Difference]: Without dead ends: 31426 [2019-09-07 22:49:22,610 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 585 GetRequests, 569 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2019-09-07 22:49:22,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31426 states. [2019-09-07 22:49:23,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31426 to 29171. [2019-09-07 22:49:23,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29171 states. [2019-09-07 22:49:24,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29171 states to 29171 states and 37879 transitions. [2019-09-07 22:49:24,656 INFO L78 Accepts]: Start accepts. Automaton has 29171 states and 37879 transitions. Word has length 561 [2019-09-07 22:49:24,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 22:49:24,658 INFO L475 AbstractCegarLoop]: Abstraction has 29171 states and 37879 transitions. [2019-09-07 22:49:24,658 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 22:49:24,658 INFO L276 IsEmpty]: Start isEmpty. Operand 29171 states and 37879 transitions. [2019-09-07 22:49:24,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 727 [2019-09-07 22:49:24,755 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 22:49:24,756 INFO L399 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:49:24,757 INFO L418 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 22:49:24,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 22:49:24,757 INFO L82 PathProgramCache]: Analyzing trace with hash -574794709, now seen corresponding path program 1 times [2019-09-07 22:49:24,758 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 22:49:24,758 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 22:49:24,760 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:49:24,760 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:49:24,760 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:49:24,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:49:25,293 INFO L134 CoverageAnalysis]: Checked inductivity of 547 backedges. 44 proven. 239 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2019-09-07 22:49:25,293 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 22:49:25,293 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 22:49:25,312 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:49:25,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:49:25,480 INFO L256 TraceCheckSpWp]: Trace formula consists of 1018 conjuncts, 6 conjunts are in the unsatisfiable core [2019-09-07 22:49:25,495 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 22:49:25,858 INFO L134 CoverageAnalysis]: Checked inductivity of 547 backedges. 259 proven. 0 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2019-09-07 22:49:25,862 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 22:49:25,862 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2019-09-07 22:49:25,864 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-07 22:49:25,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-07 22:49:25,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-09-07 22:49:25,865 INFO L87 Difference]: Start difference. First operand 29171 states and 37879 transitions. Second operand 7 states. [2019-09-07 22:49:36,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 22:49:36,222 INFO L93 Difference]: Finished difference Result 91117 states and 145782 transitions. [2019-09-07 22:49:36,223 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-09-07 22:49:36,223 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 726 [2019-09-07 22:49:36,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 22:49:36,582 INFO L225 Difference]: With dead ends: 91117 [2019-09-07 22:49:36,582 INFO L226 Difference]: Without dead ends: 61952 [2019-09-07 22:49:36,664 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 744 GetRequests, 733 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2019-09-07 22:49:36,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61952 states. [2019-09-07 22:49:38,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61952 to 59298. [2019-09-07 22:49:38,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59298 states. [2019-09-07 22:49:38,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59298 states to 59298 states and 80798 transitions. [2019-09-07 22:49:38,363 INFO L78 Accepts]: Start accepts. Automaton has 59298 states and 80798 transitions. Word has length 726 [2019-09-07 22:49:38,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 22:49:38,363 INFO L475 AbstractCegarLoop]: Abstraction has 59298 states and 80798 transitions. [2019-09-07 22:49:38,363 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-07 22:49:38,363 INFO L276 IsEmpty]: Start isEmpty. Operand 59298 states and 80798 transitions. [2019-09-07 22:49:38,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 651 [2019-09-07 22:49:38,462 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 22:49:38,462 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 22:49:38,463 INFO L418 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 22:49:38,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 22:49:38,463 INFO L82 PathProgramCache]: Analyzing trace with hash 406825562, now seen corresponding path program 1 times [2019-09-07 22:49:38,464 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 22:49:38,464 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 22:49:38,464 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:49:38,465 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:49:38,465 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:49:38,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:49:39,191 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 108 proven. 73 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2019-09-07 22:49:39,192 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 22:49:39,192 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 22:49:39,211 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:49:39,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:49:39,361 INFO L256 TraceCheckSpWp]: Trace formula consists of 900 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 22:49:39,374 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 22:49:39,623 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 287 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-09-07 22:49:39,631 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 22:49:39,633 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 22:49:39,634 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 22:49:39,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 22:49:39,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-07 22:49:39,635 INFO L87 Difference]: Start difference. First operand 59298 states and 80798 transitions. Second operand 9 states. [2019-09-07 22:49:54,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 22:49:54,520 INFO L93 Difference]: Finished difference Result 144215 states and 232154 transitions. [2019-09-07 22:49:54,520 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-09-07 22:49:54,521 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 650 [2019-09-07 22:49:54,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 22:49:55,101 INFO L225 Difference]: With dead ends: 144215 [2019-09-07 22:49:55,102 INFO L226 Difference]: Without dead ends: 85625 [2019-09-07 22:49:55,290 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 673 GetRequests, 657 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=96, Invalid=210, Unknown=0, NotChecked=0, Total=306 [2019-09-07 22:49:55,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85625 states. [2019-09-07 22:49:57,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85625 to 81282. [2019-09-07 22:49:57,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81282 states. [2019-09-07 22:49:58,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81282 states to 81282 states and 128015 transitions. [2019-09-07 22:49:58,018 INFO L78 Accepts]: Start accepts. Automaton has 81282 states and 128015 transitions. Word has length 650 [2019-09-07 22:49:58,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 22:49:58,019 INFO L475 AbstractCegarLoop]: Abstraction has 81282 states and 128015 transitions. [2019-09-07 22:49:58,019 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 22:49:58,019 INFO L276 IsEmpty]: Start isEmpty. Operand 81282 states and 128015 transitions. [2019-09-07 22:49:58,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 904 [2019-09-07 22:49:58,172 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 22:49:58,173 INFO L399 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 22:49:58,173 INFO L418 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 22:49:58,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 22:49:58,174 INFO L82 PathProgramCache]: Analyzing trace with hash -604914483, now seen corresponding path program 1 times [2019-09-07 22:49:58,174 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 22:49:58,174 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 22:49:58,175 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:49:58,175 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:49:58,175 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:49:58,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:50:01,470 INFO L134 CoverageAnalysis]: Checked inductivity of 1119 backedges. 162 proven. 314 refuted. 0 times theorem prover too weak. 643 trivial. 0 not checked. [2019-09-07 22:50:01,471 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 22:50:01,471 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 22:50:01,482 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:50:01,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:50:01,683 INFO L256 TraceCheckSpWp]: Trace formula consists of 1220 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 22:50:01,696 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 22:50:02,165 INFO L134 CoverageAnalysis]: Checked inductivity of 1119 backedges. 811 proven. 2 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2019-09-07 22:50:02,169 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 22:50:02,170 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5] total 15 [2019-09-07 22:50:02,171 INFO L454 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-09-07 22:50:02,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-09-07 22:50:02,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2019-09-07 22:50:02,172 INFO L87 Difference]: Start difference. First operand 81282 states and 128015 transitions. Second operand 15 states. [2019-09-07 22:50:16,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 22:50:16,629 INFO L93 Difference]: Finished difference Result 180249 states and 291306 transitions. [2019-09-07 22:50:16,630 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2019-09-07 22:50:16,630 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 903 [2019-09-07 22:50:16,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 22:50:17,095 INFO L225 Difference]: With dead ends: 180249 [2019-09-07 22:50:17,095 INFO L226 Difference]: Without dead ends: 99182 [2019-09-07 22:50:17,265 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 979 GetRequests, 927 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 817 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=592, Invalid=2270, Unknown=0, NotChecked=0, Total=2862 [2019-09-07 22:50:17,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99182 states. [2019-09-07 22:50:19,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99182 to 99130. [2019-09-07 22:50:19,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99130 states. [2019-09-07 22:50:23,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99130 states to 99130 states and 141039 transitions. [2019-09-07 22:50:23,148 INFO L78 Accepts]: Start accepts. Automaton has 99130 states and 141039 transitions. Word has length 903 [2019-09-07 22:50:23,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 22:50:23,149 INFO L475 AbstractCegarLoop]: Abstraction has 99130 states and 141039 transitions. [2019-09-07 22:50:23,149 INFO L476 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-09-07 22:50:23,149 INFO L276 IsEmpty]: Start isEmpty. Operand 99130 states and 141039 transitions. [2019-09-07 22:50:23,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 801 [2019-09-07 22:50:23,244 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 22:50:23,245 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 22:50:23,245 INFO L418 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 22:50:23,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 22:50:23,246 INFO L82 PathProgramCache]: Analyzing trace with hash 710520486, now seen corresponding path program 1 times [2019-09-07 22:50:23,246 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 22:50:23,246 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 22:50:23,247 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:50:23,247 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:50:23,247 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:50:23,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:50:23,927 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 379 proven. 2 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2019-09-07 22:50:23,927 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 22:50:23,927 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 22:50:23,937 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:50:24,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:50:24,119 INFO L256 TraceCheckSpWp]: Trace formula consists of 1045 conjuncts, 6 conjunts are in the unsatisfiable core [2019-09-07 22:50:24,130 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 22:50:25,213 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 379 proven. 2 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (7)] Exception during sending of exit command (exit): Broken pipe [2019-09-07 22:50:25,225 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 22:50:25,225 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 22:50:25,226 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 22:50:25,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 22:50:25,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-07 22:50:25,227 INFO L87 Difference]: Start difference. First operand 99130 states and 141039 transitions. Second operand 9 states. [2019-09-07 22:50:33,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 22:50:33,431 INFO L93 Difference]: Finished difference Result 188088 states and 256697 transitions. [2019-09-07 22:50:33,431 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-09-07 22:50:33,432 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 800 [2019-09-07 22:50:33,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 22:50:33,832 INFO L225 Difference]: With dead ends: 188088 [2019-09-07 22:50:33,832 INFO L226 Difference]: Without dead ends: 88835 [2019-09-07 22:50:34,630 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 819 GetRequests, 806 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2019-09-07 22:50:34,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88835 states. [2019-09-07 22:50:35,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88835 to 86795. [2019-09-07 22:50:35,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86795 states. [2019-09-07 22:50:36,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86795 states to 86795 states and 99568 transitions. [2019-09-07 22:50:36,143 INFO L78 Accepts]: Start accepts. Automaton has 86795 states and 99568 transitions. Word has length 800 [2019-09-07 22:50:36,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 22:50:36,144 INFO L475 AbstractCegarLoop]: Abstraction has 86795 states and 99568 transitions. [2019-09-07 22:50:36,144 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 22:50:36,144 INFO L276 IsEmpty]: Start isEmpty. Operand 86795 states and 99568 transitions. [2019-09-07 22:50:36,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 810 [2019-09-07 22:50:36,221 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 22:50:36,222 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-07 22:50:36,222 INFO L418 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 22:50:36,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 22:50:36,223 INFO L82 PathProgramCache]: Analyzing trace with hash -1203646606, now seen corresponding path program 1 times [2019-09-07 22:50:36,223 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 22:50:36,223 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 22:50:36,224 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:50:36,224 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:50:36,224 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:50:36,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:50:37,214 INFO L134 CoverageAnalysis]: Checked inductivity of 554 backedges. 157 proven. 277 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2019-09-07 22:50:37,214 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 22:50:37,214 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 22:50:37,225 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:50:37,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:50:37,410 INFO L256 TraceCheckSpWp]: Trace formula consists of 1055 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 22:50:37,419 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 22:50:37,713 INFO L134 CoverageAnalysis]: Checked inductivity of 554 backedges. 540 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-09-07 22:50:37,717 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 22:50:37,718 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 22:50:37,719 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 22:50:37,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 22:50:37,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-07 22:50:37,720 INFO L87 Difference]: Start difference. First operand 86795 states and 99568 transitions. Second operand 9 states. [2019-09-07 22:50:48,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 22:50:48,412 INFO L93 Difference]: Finished difference Result 189526 states and 228098 transitions. [2019-09-07 22:50:48,412 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-09-07 22:50:48,412 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 809 [2019-09-07 22:50:48,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 22:50:48,716 INFO L225 Difference]: With dead ends: 189526 [2019-09-07 22:50:48,716 INFO L226 Difference]: Without dead ends: 102684 [2019-09-07 22:50:48,859 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 832 GetRequests, 816 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2019-09-07 22:50:48,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102684 states. [2019-09-07 22:50:50,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102684 to 102497. [2019-09-07 22:50:50,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102497 states. [2019-09-07 22:50:51,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102497 states to 102497 states and 122284 transitions. [2019-09-07 22:50:51,025 INFO L78 Accepts]: Start accepts. Automaton has 102497 states and 122284 transitions. Word has length 809 [2019-09-07 22:50:51,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 22:50:51,026 INFO L475 AbstractCegarLoop]: Abstraction has 102497 states and 122284 transitions. [2019-09-07 22:50:51,026 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 22:50:51,026 INFO L276 IsEmpty]: Start isEmpty. Operand 102497 states and 122284 transitions. [2019-09-07 22:50:51,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 965 [2019-09-07 22:50:51,062 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 22:50:51,063 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-07 22:50:51,063 INFO L418 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 22:50:51,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 22:50:51,063 INFO L82 PathProgramCache]: Analyzing trace with hash -1391543380, now seen corresponding path program 1 times [2019-09-07 22:50:51,063 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 22:50:51,064 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 22:50:51,064 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:50:51,065 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:50:51,065 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:50:51,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:50:51,941 INFO L134 CoverageAnalysis]: Checked inductivity of 669 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 627 trivial. 0 not checked. [2019-09-07 22:50:51,941 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 22:50:51,942 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-07 22:50:51,942 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-07 22:50:51,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-07 22:50:51,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-07 22:50:51,943 INFO L87 Difference]: Start difference. First operand 102497 states and 122284 transitions. Second operand 4 states. [2019-09-07 22:50:59,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 22:50:59,674 INFO L93 Difference]: Finished difference Result 249498 states and 301401 transitions. [2019-09-07 22:50:59,674 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-07 22:50:59,675 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 964 [2019-09-07 22:50:59,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 22:51:00,108 INFO L225 Difference]: With dead ends: 249498 [2019-09-07 22:51:00,108 INFO L226 Difference]: Without dead ends: 151243 [2019-09-07 22:51:00,329 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 22:51:00,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151243 states. [2019-09-07 22:51:02,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151243 to 149026. [2019-09-07 22:51:02,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149026 states. [2019-09-07 22:51:02,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149026 states to 149026 states and 173480 transitions. [2019-09-07 22:51:02,898 INFO L78 Accepts]: Start accepts. Automaton has 149026 states and 173480 transitions. Word has length 964 [2019-09-07 22:51:02,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 22:51:02,898 INFO L475 AbstractCegarLoop]: Abstraction has 149026 states and 173480 transitions. [2019-09-07 22:51:02,899 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-07 22:51:02,899 INFO L276 IsEmpty]: Start isEmpty. Operand 149026 states and 173480 transitions. [2019-09-07 22:51:02,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1038 [2019-09-07 22:51:02,946 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 22:51:02,947 INFO L399 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-07 22:51:02,947 INFO L418 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 22:51:02,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 22:51:02,947 INFO L82 PathProgramCache]: Analyzing trace with hash -2146926910, now seen corresponding path program 1 times [2019-09-07 22:51:02,948 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 22:51:02,948 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 22:51:02,948 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:51:02,948 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:51:02,948 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:51:03,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:51:06,403 INFO L134 CoverageAnalysis]: Checked inductivity of 894 backedges. 199 proven. 76 refuted. 0 times theorem prover too weak. 619 trivial. 0 not checked. [2019-09-07 22:51:06,404 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 22:51:06,404 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 22:51:06,417 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:51:06,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:51:06,621 INFO L256 TraceCheckSpWp]: Trace formula consists of 1349 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 22:51:06,629 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 22:51:07,012 INFO L134 CoverageAnalysis]: Checked inductivity of 894 backedges. 761 proven. 2 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2019-09-07 22:51:07,016 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 22:51:07,017 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 22:51:07,018 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 22:51:07,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 22:51:07,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-07 22:51:07,019 INFO L87 Difference]: Start difference. First operand 149026 states and 173480 transitions. Second operand 9 states. [2019-09-07 22:51:14,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 22:51:14,714 INFO L93 Difference]: Finished difference Result 274291 states and 314749 transitions. [2019-09-07 22:51:14,714 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-09-07 22:51:14,714 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 1037 [2019-09-07 22:51:14,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 22:51:15,051 INFO L225 Difference]: With dead ends: 274291 [2019-09-07 22:51:15,051 INFO L226 Difference]: Without dead ends: 125211 [2019-09-07 22:51:15,295 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1064 GetRequests, 1046 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=115, Invalid=265, Unknown=0, NotChecked=0, Total=380 [2019-09-07 22:51:15,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125211 states. [2019-09-07 22:51:16,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125211 to 124385. [2019-09-07 22:51:16,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124385 states. [2019-09-07 22:51:17,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124385 states to 124385 states and 132734 transitions. [2019-09-07 22:51:17,126 INFO L78 Accepts]: Start accepts. Automaton has 124385 states and 132734 transitions. Word has length 1037 [2019-09-07 22:51:17,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 22:51:17,127 INFO L475 AbstractCegarLoop]: Abstraction has 124385 states and 132734 transitions. [2019-09-07 22:51:17,127 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 22:51:17,127 INFO L276 IsEmpty]: Start isEmpty. Operand 124385 states and 132734 transitions. [2019-09-07 22:51:17,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1134 [2019-09-07 22:51:17,158 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 22:51:17,159 INFO L399 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-07 22:51:17,159 INFO L418 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 22:51:17,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 22:51:17,160 INFO L82 PathProgramCache]: Analyzing trace with hash -2144643134, now seen corresponding path program 1 times [2019-09-07 22:51:17,160 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 22:51:17,160 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 22:51:17,161 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:51:17,161 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:51:17,161 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:51:17,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:51:19,116 INFO L134 CoverageAnalysis]: Checked inductivity of 1115 backedges. 726 proven. 2 refuted. 0 times theorem prover too weak. 387 trivial. 0 not checked. [2019-09-07 22:51:19,116 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 22:51:19,116 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) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 22:51:19,127 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:51:19,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:51:19,365 INFO L256 TraceCheckSpWp]: Trace formula consists of 1445 conjuncts, 16 conjunts are in the unsatisfiable core [2019-09-07 22:51:19,375 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 22:51:19,409 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-09-07 22:51:22,239 INFO L134 CoverageAnalysis]: Checked inductivity of 1115 backedges. 374 proven. 0 refuted. 0 times theorem prover too weak. 741 trivial. 0 not checked. [2019-09-07 22:51:22,244 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 22:51:22,245 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2019-09-07 22:51:22,246 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 22:51:22,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 22:51:22,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-09-07 22:51:22,246 INFO L87 Difference]: Start difference. First operand 124385 states and 132734 transitions. Second operand 9 states. [2019-09-07 22:51:34,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 22:51:34,737 INFO L93 Difference]: Finished difference Result 285930 states and 307535 transitions. [2019-09-07 22:51:34,737 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2019-09-07 22:51:34,737 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 1133 [2019-09-07 22:51:34,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 22:51:35,108 INFO L225 Difference]: With dead ends: 285930 [2019-09-07 22:51:35,108 INFO L226 Difference]: Without dead ends: 162265 [2019-09-07 22:51:35,259 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1179 GetRequests, 1152 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=163, Invalid=649, Unknown=0, NotChecked=0, Total=812 [2019-09-07 22:51:35,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162265 states. [2019-09-07 22:51:37,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162265 to 156589. [2019-09-07 22:51:37,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156589 states. [2019-09-07 22:51:37,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156589 states to 156589 states and 167894 transitions. [2019-09-07 22:51:37,361 INFO L78 Accepts]: Start accepts. Automaton has 156589 states and 167894 transitions. Word has length 1133 [2019-09-07 22:51:37,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 22:51:37,361 INFO L475 AbstractCegarLoop]: Abstraction has 156589 states and 167894 transitions. [2019-09-07 22:51:37,362 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 22:51:37,362 INFO L276 IsEmpty]: Start isEmpty. Operand 156589 states and 167894 transitions. [2019-09-07 22:51:37,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1524 [2019-09-07 22:51:37,408 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 22:51:37,409 INFO L399 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-07 22:51:37,409 INFO L418 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 22:51:37,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 22:51:37,410 INFO L82 PathProgramCache]: Analyzing trace with hash 1143942646, now seen corresponding path program 1 times [2019-09-07 22:51:37,410 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 22:51:37,410 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 22:51:37,411 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:51:37,411 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:51:37,411 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:51:37,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:51:42,099 INFO L134 CoverageAnalysis]: Checked inductivity of 2034 backedges. 274 proven. 233 refuted. 0 times theorem prover too weak. 1527 trivial. 0 not checked. [2019-09-07 22:51:42,099 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 22:51:42,100 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 22:51:42,111 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:51:42,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:51:42,439 INFO L256 TraceCheckSpWp]: Trace formula consists of 1959 conjuncts, 10 conjunts are in the unsatisfiable core [2019-09-07 22:51:42,454 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 22:51:42,490 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 22:51:42,491 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 22:51:44,605 WARN L188 SmtUtils]: Spent 2.09 s on a formula simplification. DAG size of input: 24 DAG size of output: 21 [2019-09-07 22:51:44,622 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 22:51:47,139 INFO L134 CoverageAnalysis]: Checked inductivity of 2034 backedges. 1266 proven. 77 refuted. 0 times theorem prover too weak. 691 trivial. 0 not checked. [2019-09-07 22:51:47,144 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 22:51:47,144 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8] total 12 [2019-09-07 22:51:47,146 INFO L454 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-09-07 22:51:47,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-09-07 22:51:47,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=103, Unknown=1, NotChecked=0, Total=132 [2019-09-07 22:51:47,146 INFO L87 Difference]: Start difference. First operand 156589 states and 167894 transitions. Second operand 12 states. [2019-09-07 22:51:55,190 WARN L188 SmtUtils]: Spent 2.21 s on a formula simplification. DAG size of input: 26 DAG size of output: 25 [2019-09-07 22:51:57,826 WARN L188 SmtUtils]: Spent 1.24 s on a formula simplification that was a NOOP. DAG size: 23 [2019-09-07 22:52:00,147 WARN L188 SmtUtils]: Spent 2.28 s on a formula simplification. DAG size of input: 24 DAG size of output: 23 [2019-09-07 22:52:55,989 WARN L188 SmtUtils]: Spent 1.18 s on a formula simplification that was a NOOP. DAG size: 24 [2019-09-07 22:54:34,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 22:54:34,150 INFO L93 Difference]: Finished difference Result 391316 states and 420938 transitions. [2019-09-07 22:54:34,152 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2019-09-07 22:54:34,152 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 1523 [2019-09-07 22:54:34,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 22:54:34,739 INFO L225 Difference]: With dead ends: 391316 [2019-09-07 22:54:34,739 INFO L226 Difference]: Without dead ends: 236145 [2019-09-07 22:54:35,441 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1575 GetRequests, 1539 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 311 ImplicationChecksByTransitivity, 23.1s TimeCoverageRelationStatistics Valid=251, Invalid=1072, Unknown=9, NotChecked=0, Total=1332 [2019-09-07 22:54:35,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236145 states. [2019-09-07 22:54:38,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236145 to 231391. [2019-09-07 22:54:38,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231391 states. [2019-09-07 22:54:39,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231391 states to 231391 states and 245527 transitions. [2019-09-07 22:54:39,074 INFO L78 Accepts]: Start accepts. Automaton has 231391 states and 245527 transitions. Word has length 1523 [2019-09-07 22:54:39,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 22:54:39,075 INFO L475 AbstractCegarLoop]: Abstraction has 231391 states and 245527 transitions. [2019-09-07 22:54:39,075 INFO L476 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-09-07 22:54:39,075 INFO L276 IsEmpty]: Start isEmpty. Operand 231391 states and 245527 transitions. [2019-09-07 22:54:39,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1765 [2019-09-07 22:54:39,158 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 22:54:39,161 INFO L399 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:54:39,162 INFO L418 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 22:54:39,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 22:54:39,163 INFO L82 PathProgramCache]: Analyzing trace with hash -1170837819, now seen corresponding path program 1 times [2019-09-07 22:54:39,163 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 22:54:39,163 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 22:54:39,165 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:54:39,165 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:54:39,165 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:54:39,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:54:45,913 INFO L134 CoverageAnalysis]: Checked inductivity of 3350 backedges. 492 proven. 1283 refuted. 0 times theorem prover too weak. 1575 trivial. 0 not checked. [2019-09-07 22:54:45,913 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 22:54:45,913 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 22:54:45,924 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:54:46,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:54:46,291 INFO L256 TraceCheckSpWp]: Trace formula consists of 2282 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 22:54:46,305 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 22:54:47,373 INFO L134 CoverageAnalysis]: Checked inductivity of 3350 backedges. 1750 proven. 2 refuted. 0 times theorem prover too weak. 1598 trivial. 0 not checked. [2019-09-07 22:54:47,381 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 22:54:47,382 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5] total 14 [2019-09-07 22:54:47,383 INFO L454 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-09-07 22:54:47,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-09-07 22:54:47,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2019-09-07 22:54:47,384 INFO L87 Difference]: Start difference. First operand 231391 states and 245527 transitions. Second operand 14 states. [2019-09-07 22:55:01,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 22:55:01,739 INFO L93 Difference]: Finished difference Result 469269 states and 498184 transitions. [2019-09-07 22:55:01,739 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2019-09-07 22:55:01,739 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 1764 [2019-09-07 22:55:01,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 22:55:02,949 INFO L225 Difference]: With dead ends: 469269 [2019-09-07 22:55:02,949 INFO L226 Difference]: Without dead ends: 243508 [2019-09-07 22:55:03,174 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1829 GetRequests, 1790 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 365 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=367, Invalid=1193, Unknown=0, NotChecked=0, Total=1560 [2019-09-07 22:55:03,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243508 states. [2019-09-07 22:55:06,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243508 to 236382. [2019-09-07 22:55:06,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 236382 states. [2019-09-07 22:55:06,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236382 states to 236382 states and 249880 transitions. [2019-09-07 22:55:06,550 INFO L78 Accepts]: Start accepts. Automaton has 236382 states and 249880 transitions. Word has length 1764 [2019-09-07 22:55:06,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 22:55:06,551 INFO L475 AbstractCegarLoop]: Abstraction has 236382 states and 249880 transitions. [2019-09-07 22:55:06,551 INFO L476 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-09-07 22:55:06,551 INFO L276 IsEmpty]: Start isEmpty. Operand 236382 states and 249880 transitions. [2019-09-07 22:55:06,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1824 [2019-09-07 22:55:06,629 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 22:55:06,630 INFO L399 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-07 22:55:06,631 INFO L418 AbstractCegarLoop]: === Iteration 18 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 22:55:06,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 22:55:06,631 INFO L82 PathProgramCache]: Analyzing trace with hash 133663819, now seen corresponding path program 1 times [2019-09-07 22:55:06,632 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 22:55:06,632 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 22:55:06,633 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:55:06,633 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:55:06,633 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:55:06,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:55:14,815 INFO L134 CoverageAnalysis]: Checked inductivity of 3272 backedges. 266 proven. 2595 refuted. 0 times theorem prover too weak. 411 trivial. 0 not checked. [2019-09-07 22:55:14,816 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 22:55:14,816 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 22:55:14,826 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:55:15,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:55:15,228 INFO L256 TraceCheckSpWp]: Trace formula consists of 2299 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 22:55:15,245 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 22:55:15,302 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-09-07 22:55:16,412 INFO L134 CoverageAnalysis]: Checked inductivity of 3272 backedges. 2273 proven. 2 refuted. 0 times theorem prover too weak. 997 trivial. 0 not checked. [2019-09-07 22:55:16,417 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 22:55:16,418 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 5] total 25 [2019-09-07 22:55:16,420 INFO L454 AbstractCegarLoop]: Interpolant automaton has 25 states [2019-09-07 22:55:16,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2019-09-07 22:55:16,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=495, Unknown=0, NotChecked=0, Total=600 [2019-09-07 22:55:16,421 INFO L87 Difference]: Start difference. First operand 236382 states and 249880 transitions. Second operand 25 states. [2019-09-07 22:55:28,136 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2019-09-07 22:55:30,393 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 40 [2019-09-07 22:55:38,916 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 39 [2019-09-07 22:55:44,321 WARN L188 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 37 [2019-09-07 22:55:49,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 22:55:49,005 INFO L93 Difference]: Finished difference Result 467093 states and 494864 transitions. [2019-09-07 22:55:49,005 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2019-09-07 22:55:49,005 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 1823 [2019-09-07 22:55:49,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 22:55:49,616 INFO L225 Difference]: With dead ends: 467093 [2019-09-07 22:55:49,616 INFO L226 Difference]: Without dead ends: 236346 [2019-09-07 22:55:49,958 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 2049 GetRequests, 1914 SyntacticMatches, 3 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6511 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=2502, Invalid=15320, Unknown=0, NotChecked=0, Total=17822 [2019-09-07 22:55:50,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236346 states. [2019-09-07 22:55:54,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236346 to 232740. [2019-09-07 22:55:54,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232740 states. [2019-09-07 22:55:54,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232740 states to 232740 states and 244090 transitions. [2019-09-07 22:55:54,851 INFO L78 Accepts]: Start accepts. Automaton has 232740 states and 244090 transitions. Word has length 1823 [2019-09-07 22:55:54,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 22:55:54,852 INFO L475 AbstractCegarLoop]: Abstraction has 232740 states and 244090 transitions. [2019-09-07 22:55:54,852 INFO L476 AbstractCegarLoop]: Interpolant automaton has 25 states. [2019-09-07 22:55:54,852 INFO L276 IsEmpty]: Start isEmpty. Operand 232740 states and 244090 transitions. [2019-09-07 22:55:54,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1956 [2019-09-07 22:55:54,956 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 22:55:54,957 INFO L399 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-07 22:55:54,958 INFO L418 AbstractCegarLoop]: === Iteration 19 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 22:55:54,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 22:55:54,958 INFO L82 PathProgramCache]: Analyzing trace with hash -1263912148, now seen corresponding path program 1 times [2019-09-07 22:55:54,958 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 22:55:54,958 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 22:55:54,959 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:55:54,959 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:55:54,959 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:55:55,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:56:02,694 INFO L134 CoverageAnalysis]: Checked inductivity of 3972 backedges. 489 proven. 247 refuted. 0 times theorem prover too weak. 3236 trivial. 0 not checked. [2019-09-07 22:56:02,695 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 22:56:02,695 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 22:56:02,705 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:56:03,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:56:03,112 INFO L256 TraceCheckSpWp]: Trace formula consists of 2468 conjuncts, 5 conjunts are in the unsatisfiable core [2019-09-07 22:56:03,124 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 22:56:04,359 INFO L134 CoverageAnalysis]: Checked inductivity of 3972 backedges. 2694 proven. 2 refuted. 0 times theorem prover too weak. 1276 trivial. 0 not checked. [2019-09-07 22:56:04,365 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 22:56:04,366 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 7 [2019-09-07 22:56:04,367 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-07 22:56:04,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-07 22:56:04,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-09-07 22:56:04,368 INFO L87 Difference]: Start difference. First operand 232740 states and 244090 transitions. Second operand 7 states. [2019-09-07 22:56:12,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 22:56:12,703 INFO L93 Difference]: Finished difference Result 472573 states and 495908 transitions. [2019-09-07 22:56:12,703 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-09-07 22:56:12,703 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1955 [2019-09-07 22:56:12,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 22:56:13,831 INFO L225 Difference]: With dead ends: 472573 [2019-09-07 22:56:13,831 INFO L226 Difference]: Without dead ends: 245476 [2019-09-07 22:56:14,043 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1970 GetRequests, 1959 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2019-09-07 22:56:14,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245476 states. [2019-09-07 22:56:19,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245476 to 242618. [2019-09-07 22:56:19,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242618 states. [2019-09-07 22:56:20,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242618 states to 242618 states and 254190 transitions. [2019-09-07 22:56:20,252 INFO L78 Accepts]: Start accepts. Automaton has 242618 states and 254190 transitions. Word has length 1955 [2019-09-07 22:56:20,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 22:56:20,253 INFO L475 AbstractCegarLoop]: Abstraction has 242618 states and 254190 transitions. [2019-09-07 22:56:20,253 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-07 22:56:20,253 INFO L276 IsEmpty]: Start isEmpty. Operand 242618 states and 254190 transitions. [2019-09-07 22:56:20,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2060 [2019-09-07 22:56:20,379 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 22:56:20,380 INFO L399 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:56:20,380 INFO L418 AbstractCegarLoop]: === Iteration 20 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 22:56:20,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 22:56:20,380 INFO L82 PathProgramCache]: Analyzing trace with hash 563536053, now seen corresponding path program 1 times [2019-09-07 22:56:20,380 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 22:56:20,381 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 22:56:20,381 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:56:20,381 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:56:20,381 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:56:21,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:56:34,498 INFO L134 CoverageAnalysis]: Checked inductivity of 4207 backedges. 882 proven. 2562 refuted. 0 times theorem prover too weak. 763 trivial. 0 not checked. [2019-09-07 22:56:34,499 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 22:56:34,499 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 22:56:34,510 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:56:34,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:56:34,951 INFO L256 TraceCheckSpWp]: Trace formula consists of 2531 conjuncts, 6 conjunts are in the unsatisfiable core [2019-09-07 22:56:34,963 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 22:56:35,044 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-09-07 22:56:36,610 INFO L134 CoverageAnalysis]: Checked inductivity of 4207 backedges. 1604 proven. 2 refuted. 0 times theorem prover too weak. 2601 trivial. 0 not checked. [2019-09-07 22:56:36,615 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 22:56:36,615 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 5] total 25 [2019-09-07 22:56:36,617 INFO L454 AbstractCegarLoop]: Interpolant automaton has 25 states [2019-09-07 22:56:36,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2019-09-07 22:56:36,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=500, Unknown=0, NotChecked=0, Total=600 [2019-09-07 22:56:36,618 INFO L87 Difference]: Start difference. First operand 242618 states and 254190 transitions. Second operand 25 states. [2019-09-07 22:56:56,203 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 45 [2019-09-07 22:57:05,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 22:57:05,075 INFO L93 Difference]: Finished difference Result 486569 states and 510615 transitions. [2019-09-07 22:57:05,075 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2019-09-07 22:57:05,075 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 2059 [2019-09-07 22:57:05,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 22:57:05,679 INFO L225 Difference]: With dead ends: 486569 [2019-09-07 22:57:05,679 INFO L226 Difference]: Without dead ends: 249594 [2019-09-07 22:57:05,983 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 2262 GetRequests, 2145 SyntacticMatches, 4 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4269 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=2258, Invalid=10852, Unknown=0, NotChecked=0, Total=13110 [2019-09-07 22:57:06,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249594 states. [2019-09-07 22:57:10,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249594 to 243405. [2019-09-07 22:57:10,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243405 states. [2019-09-07 22:57:10,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243405 states to 243405 states and 254300 transitions. [2019-09-07 22:57:10,524 INFO L78 Accepts]: Start accepts. Automaton has 243405 states and 254300 transitions. Word has length 2059 [2019-09-07 22:57:10,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 22:57:10,525 INFO L475 AbstractCegarLoop]: Abstraction has 243405 states and 254300 transitions. [2019-09-07 22:57:10,525 INFO L476 AbstractCegarLoop]: Interpolant automaton has 25 states. [2019-09-07 22:57:10,525 INFO L276 IsEmpty]: Start isEmpty. Operand 243405 states and 254300 transitions. [2019-09-07 22:57:10,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2080 [2019-09-07 22:57:10,663 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 22:57:10,664 INFO L399 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:57:10,665 INFO L418 AbstractCegarLoop]: === Iteration 21 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 22:57:10,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 22:57:10,665 INFO L82 PathProgramCache]: Analyzing trace with hash 1694599968, now seen corresponding path program 1 times [2019-09-07 22:57:10,666 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 22:57:10,666 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 22:57:10,667 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:57:10,667 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:57:10,667 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:57:10,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:57:25,674 INFO L134 CoverageAnalysis]: Checked inductivity of 4740 backedges. 544 proven. 3416 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2019-09-07 22:57:25,675 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 22:57:25,675 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 22:57:25,689 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:57:26,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:57:26,151 INFO L256 TraceCheckSpWp]: Trace formula consists of 2587 conjuncts, 7 conjunts are in the unsatisfiable core [2019-09-07 22:57:26,167 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 22:57:27,784 INFO L134 CoverageAnalysis]: Checked inductivity of 4740 backedges. 3188 proven. 2 refuted. 0 times theorem prover too weak. 1550 trivial. 0 not checked. [2019-09-07 22:57:27,792 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 22:57:27,793 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 5] total 25 [2019-09-07 22:57:27,795 INFO L454 AbstractCegarLoop]: Interpolant automaton has 25 states [2019-09-07 22:57:27,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2019-09-07 22:57:27,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=507, Unknown=0, NotChecked=0, Total=600 [2019-09-07 22:57:27,796 INFO L87 Difference]: Start difference. First operand 243405 states and 254300 transitions. Second operand 25 states. [2019-09-07 22:57:42,284 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 47 [2019-09-07 22:58:03,263 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 49 [2019-09-07 22:58:08,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 22:58:08,464 INFO L93 Difference]: Finished difference Result 468730 states and 489929 transitions. [2019-09-07 22:58:08,464 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 147 states. [2019-09-07 22:58:08,464 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 2079 [2019-09-07 22:58:08,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 22:58:09,419 INFO L225 Difference]: With dead ends: 468730 [2019-09-07 22:58:09,419 INFO L226 Difference]: Without dead ends: 230218 [2019-09-07 22:58:09,643 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 2362 GetRequests, 2195 SyntacticMatches, 1 SemanticMatches, 166 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11292 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=3457, Invalid=24599, Unknown=0, NotChecked=0, Total=28056 [2019-09-07 22:58:09,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230218 states. [2019-09-07 22:58:12,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230218 to 224876. [2019-09-07 22:58:12,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224876 states. [2019-09-07 22:58:12,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224876 states to 224876 states and 230330 transitions. [2019-09-07 22:58:12,545 INFO L78 Accepts]: Start accepts. Automaton has 224876 states and 230330 transitions. Word has length 2079 [2019-09-07 22:58:12,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 22:58:12,547 INFO L475 AbstractCegarLoop]: Abstraction has 224876 states and 230330 transitions. [2019-09-07 22:58:12,547 INFO L476 AbstractCegarLoop]: Interpolant automaton has 25 states. [2019-09-07 22:58:12,547 INFO L276 IsEmpty]: Start isEmpty. Operand 224876 states and 230330 transitions. [2019-09-07 22:58:12,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2092 [2019-09-07 22:58:12,666 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 22:58:12,667 INFO L399 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-07 22:58:12,667 INFO L418 AbstractCegarLoop]: === Iteration 22 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 22:58:12,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 22:58:12,667 INFO L82 PathProgramCache]: Analyzing trace with hash -1524432785, now seen corresponding path program 1 times [2019-09-07 22:58:12,667 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 22:58:12,668 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 22:58:12,668 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:58:12,668 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:58:12,669 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:58:12,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:58:17,102 INFO L134 CoverageAnalysis]: Checked inductivity of 4278 backedges. 1636 proven. 2 refuted. 0 times theorem prover too weak. 2640 trivial. 0 not checked. [2019-09-07 22:58:17,103 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 22:58:17,105 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-07 22:58:17,121 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 22:58:17,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:58:17,559 INFO L256 TraceCheckSpWp]: Trace formula consists of 2587 conjuncts, 7 conjunts are in the unsatisfiable core [2019-09-07 22:58:17,571 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 22:58:17,587 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 22:58:17,587 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 22:58:19,826 INFO L134 CoverageAnalysis]: Checked inductivity of 4278 backedges. 1636 proven. 2 refuted. 0 times theorem prover too weak. 2640 trivial. 0 not checked. [2019-09-07 22:58:19,831 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 22:58:19,832 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 7 [2019-09-07 22:58:19,834 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-07 22:58:19,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-07 22:58:19,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-09-07 22:58:19,835 INFO L87 Difference]: Start difference. First operand 224876 states and 230330 transitions. Second operand 7 states. [2019-09-07 22:58:28,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 22:58:28,015 INFO L93 Difference]: Finished difference Result 459897 states and 472850 transitions. [2019-09-07 22:58:28,017 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-09-07 22:58:28,017 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 2091 [2019-09-07 22:58:28,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 22:58:28,496 INFO L225 Difference]: With dead ends: 459897 [2019-09-07 22:58:28,496 INFO L226 Difference]: Without dead ends: 239954 [2019-09-07 22:58:28,702 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 2112 GetRequests, 2099 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2019-09-07 22:58:28,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239954 states. [2019-09-07 22:58:36,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239954 to 238073. [2019-09-07 22:58:36,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238073 states. [2019-09-07 22:58:36,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238073 states to 238073 states and 244468 transitions. [2019-09-07 22:58:36,733 INFO L78 Accepts]: Start accepts. Automaton has 238073 states and 244468 transitions. Word has length 2091 [2019-09-07 22:58:36,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 22:58:36,735 INFO L475 AbstractCegarLoop]: Abstraction has 238073 states and 244468 transitions. [2019-09-07 22:58:36,735 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-07 22:58:36,735 INFO L276 IsEmpty]: Start isEmpty. Operand 238073 states and 244468 transitions. [2019-09-07 22:58:36,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2187 [2019-09-07 22:58:36,919 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 22:58:36,920 INFO L399 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-07 22:58:36,920 INFO L418 AbstractCegarLoop]: === Iteration 23 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 22:58:36,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 22:58:36,920 INFO L82 PathProgramCache]: Analyzing trace with hash 60538705, now seen corresponding path program 1 times [2019-09-07 22:58:36,920 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 22:58:36,921 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 22:58:36,921 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:58:36,921 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:58:36,922 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:58:37,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:58:39,979 INFO L134 CoverageAnalysis]: Checked inductivity of 5240 backedges. 677 proven. 674 refuted. 0 times theorem prover too weak. 3889 trivial. 0 not checked. [2019-09-07 22:58:39,980 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 22:58:39,980 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 22:58:39,991 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:58:40,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:58:40,444 INFO L256 TraceCheckSpWp]: Trace formula consists of 2688 conjuncts, 8 conjunts are in the unsatisfiable core [2019-09-07 22:58:40,457 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 22:58:40,492 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-09-07 22:58:42,124 INFO L134 CoverageAnalysis]: Checked inductivity of 5240 backedges. 3450 proven. 2 refuted. 0 times theorem prover too weak. 1788 trivial. 0 not checked. [2019-09-07 22:58:42,132 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 22:58:42,133 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 22:58:42,135 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 22:58:42,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 22:58:42,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-09-07 22:58:42,135 INFO L87 Difference]: Start difference. First operand 238073 states and 244468 transitions. Second operand 9 states. [2019-09-07 22:58:58,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 22:58:58,216 INFO L93 Difference]: Finished difference Result 498097 states and 512337 transitions. [2019-09-07 22:58:58,217 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2019-09-07 22:58:58,217 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 2186 [2019-09-07 22:58:58,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 22:58:58,745 INFO L225 Difference]: With dead ends: 498097 [2019-09-07 22:58:58,745 INFO L226 Difference]: Without dead ends: 264957 [2019-09-07 22:58:58,987 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 2235 GetRequests, 2206 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=191, Invalid=739, Unknown=0, NotChecked=0, Total=930 [2019-09-07 22:58:59,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264957 states. [2019-09-07 22:59:01,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264957 to 261371. [2019-09-07 22:59:01,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261371 states. [2019-09-07 22:59:08,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261371 states to 261371 states and 268984 transitions. [2019-09-07 22:59:08,733 INFO L78 Accepts]: Start accepts. Automaton has 261371 states and 268984 transitions. Word has length 2186 [2019-09-07 22:59:08,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 22:59:08,733 INFO L475 AbstractCegarLoop]: Abstraction has 261371 states and 268984 transitions. [2019-09-07 22:59:08,734 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 22:59:08,734 INFO L276 IsEmpty]: Start isEmpty. Operand 261371 states and 268984 transitions. [2019-09-07 22:59:08,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2212 [2019-09-07 22:59:08,889 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 22:59:08,890 INFO L399 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-07 22:59:08,890 INFO L418 AbstractCegarLoop]: === Iteration 24 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 22:59:08,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 22:59:08,891 INFO L82 PathProgramCache]: Analyzing trace with hash -1365383761, now seen corresponding path program 1 times [2019-09-07 22:59:08,891 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 22:59:08,891 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 22:59:08,892 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:59:08,892 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:59:08,892 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:59:09,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:59:15,017 INFO L134 CoverageAnalysis]: Checked inductivity of 5063 backedges. 2145 proven. 2008 refuted. 0 times theorem prover too weak. 910 trivial. 0 not checked. [2019-09-07 22:59:15,017 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 22:59:15,017 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 22:59:15,027 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:59:15,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:59:15,520 INFO L256 TraceCheckSpWp]: Trace formula consists of 2742 conjuncts, 33 conjunts are in the unsatisfiable core [2019-09-07 22:59:15,543 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 22:59:15,609 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 22:59:15,611 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-09-07 22:59:15,613 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 22:59:15,614 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 22:59:15,617 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 22:59:15,618 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 22:59:15,622 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-09-07 22:59:15,625 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 22:59:15,628 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 22:59:15,836 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 41 [2019-09-07 22:59:15,842 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 22:59:15,992 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 5 terms [2019-09-07 22:59:15,993 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 6 terms [2019-09-07 22:59:15,994 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 6 terms [2019-09-07 22:59:20,601 INFO L134 CoverageAnalysis]: Checked inductivity of 5063 backedges. 2661 proven. 13 refuted. 0 times theorem prover too weak. 2389 trivial. 0 not checked. [2019-09-07 22:59:20,606 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 22:59:20,606 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 12] total 32 [2019-09-07 22:59:20,609 INFO L454 AbstractCegarLoop]: Interpolant automaton has 32 states [2019-09-07 22:59:20,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2019-09-07 22:59:20,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=871, Unknown=0, NotChecked=0, Total=992 [2019-09-07 22:59:20,610 INFO L87 Difference]: Start difference. First operand 261371 states and 268984 transitions. Second operand 32 states. [2019-09-07 22:59:34,792 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 53 [2019-09-07 22:59:35,398 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 55 [2019-09-07 22:59:44,165 WARN L188 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 62 [2019-09-07 22:59:44,409 WARN L188 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2019-09-07 22:59:45,854 WARN L188 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 45 [2019-09-07 22:59:46,856 WARN L188 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 57 [2019-09-07 22:59:48,359 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 56 [2019-09-07 22:59:53,150 WARN L188 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 54 [2019-09-07 22:59:56,987 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 52 [2019-09-07 22:59:58,086 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 41 [2019-09-07 23:00:03,227 WARN L188 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 58 [2019-09-07 23:00:03,616 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 55 [2019-09-07 23:00:04,214 WARN L188 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 42 [2019-09-07 23:00:09,441 WARN L188 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2019-09-07 23:00:12,838 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 52 [2019-09-07 23:00:13,533 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 47 [2019-09-07 23:00:14,222 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 53 [2019-09-07 23:00:14,519 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 50 [2019-09-07 23:00:14,686 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 54 [2019-09-07 23:00:14,941 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 51 [2019-09-07 23:00:17,218 WARN L188 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 63 [2019-09-07 23:00:17,602 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 57 [2019-09-07 23:00:17,817 WARN L188 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 60 [2019-09-07 23:00:18,612 WARN L188 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 71 [2019-09-07 23:00:18,853 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 51 [2019-09-07 23:00:19,278 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 58 [2019-09-07 23:00:19,864 WARN L188 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2019-09-07 23:00:20,274 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 54 [2019-09-07 23:00:20,504 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 56 [2019-09-07 23:00:20,737 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 51 [2019-09-07 23:00:21,620 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 48 [2019-09-07 23:00:22,858 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 52 [2019-09-07 23:00:25,042 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 52 [2019-09-07 23:00:25,340 WARN L188 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2019-09-07 23:00:25,942 WARN L188 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 65 [2019-09-07 23:00:26,276 WARN L188 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 62 [2019-09-07 23:00:27,152 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 54