java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label33.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-07 19:39:13,676 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-07 19:39:13,678 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-07 19:39:13,690 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-07 19:39:13,690 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-07 19:39:13,691 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-07 19:39:13,693 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-07 19:39:13,694 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-07 19:39:13,696 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-07 19:39:13,697 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-07 19:39:13,698 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-07 19:39:13,699 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-07 19:39:13,700 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-07 19:39:13,701 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-07 19:39:13,701 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-07 19:39:13,703 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-07 19:39:13,703 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-07 19:39:13,704 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-07 19:39:13,706 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-07 19:39:13,708 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-07 19:39:13,710 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-07 19:39:13,711 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-07 19:39:13,712 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-07 19:39:13,713 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-07 19:39:13,715 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-07 19:39:13,722 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-07 19:39:13,723 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-07 19:39:13,724 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-07 19:39:13,725 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-09-07 19:39:13,739 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-07 19:39:13,739 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-07 19:39:13,740 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-07 19:39:13,740 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-07 19:39:13,740 INFO L138 SettingsManager]: * Use SBE=true [2019-09-07 19:39:13,741 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-07 19:39:13,741 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-07 19:39:13,741 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-07 19:39:13,741 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-07 19:39:13,741 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-07 19:39:13,742 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-07 19:39:13,742 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-07 19:39:13,742 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-07 19:39:13,742 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-07 19:39:13,742 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-07 19:39:13,743 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-07 19:39:13,743 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-07 19:39:13,743 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-07 19:39:13,743 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-07 19:39:13,743 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-07 19:39:13,744 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-07 19:39:13,744 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-07 19:39:13,744 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-07 19:39:13,744 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-07 19:39:13,744 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-07 19:39:13,745 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-07 19:39:13,745 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-07 19:39:13,745 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-07 19:39:13,745 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-07 19:39:13,781 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-07 19:39:13,791 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-07 19:39:13,796 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-07 19:39:13,797 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-07 19:39:13,798 INFO L275 PluginConnector]: CDTParser initialized [2019-09-07 19:39:13,800 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label33.c [2019-09-07 19:39:13,875 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/efd49e309/06238754b5b34641b5a3ad389c7d24b1/FLAGe828be631 [2019-09-07 19:39:14,648 INFO L306 CDTParser]: Found 1 translation units. [2019-09-07 19:39:14,651 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label33.c [2019-09-07 19:39:14,689 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/efd49e309/06238754b5b34641b5a3ad389c7d24b1/FLAGe828be631 [2019-09-07 19:39:14,729 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/efd49e309/06238754b5b34641b5a3ad389c7d24b1 [2019-09-07 19:39:14,742 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-07 19:39:14,744 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-07 19:39:14,748 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-07 19:39:14,748 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-07 19:39:14,752 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-07 19:39:14,753 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 07:39:14" (1/1) ... [2019-09-07 19:39:14,756 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4cc9efcb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 07:39:14, skipping insertion in model container [2019-09-07 19:39:14,757 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 07:39:14" (1/1) ... [2019-09-07 19:39:14,765 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-07 19:39:14,945 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-07 19:39:16,473 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-07 19:39:16,481 INFO L188 MainTranslator]: Completed pre-run [2019-09-07 19:39:17,285 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-07 19:39:17,319 INFO L192 MainTranslator]: Completed translation [2019-09-07 19:39:17,320 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 07:39:17 WrapperNode [2019-09-07 19:39:17,321 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-07 19:39:17,321 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-07 19:39:17,322 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-07 19:39:17,322 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-07 19:39:17,339 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 07:39:17" (1/1) ... [2019-09-07 19:39:17,339 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 07:39:17" (1/1) ... [2019-09-07 19:39:17,412 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 07:39:17" (1/1) ... [2019-09-07 19:39:17,412 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 07:39:17" (1/1) ... [2019-09-07 19:39:17,534 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 07:39:17" (1/1) ... [2019-09-07 19:39:17,563 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 07:39:17" (1/1) ... [2019-09-07 19:39:17,621 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 07:39:17" (1/1) ... [2019-09-07 19:39:17,685 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-07 19:39:17,686 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-07 19:39:17,686 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-07 19:39:17,686 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-07 19:39:17,687 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 07:39:17" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-07 19:39:17,778 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-07 19:39:17,779 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-07 19:39:17,779 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-09-07 19:39:17,779 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-09-07 19:39:17,779 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-09-07 19:39:17,779 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2019-09-07 19:39:17,780 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-07 19:39:17,780 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-09-07 19:39:17,780 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-09-07 19:39:17,780 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-09-07 19:39:17,780 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2019-09-07 19:39:17,781 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-07 19:39:17,781 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-07 19:39:17,782 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-07 19:39:17,783 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-07 19:39:17,783 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-07 19:39:17,784 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-07 19:39:24,554 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-07 19:39:24,554 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-07 19:39:24,557 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 07:39:24 BoogieIcfgContainer [2019-09-07 19:39:24,557 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-07 19:39:24,558 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-07 19:39:24,558 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-07 19:39:24,562 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-07 19:39:24,563 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.09 07:39:14" (1/3) ... [2019-09-07 19:39:24,564 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39bd3a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 07:39:24, skipping insertion in model container [2019-09-07 19:39:24,564 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 07:39:17" (2/3) ... [2019-09-07 19:39:24,565 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39bd3a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 07:39:24, skipping insertion in model container [2019-09-07 19:39:24,565 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 07:39:24" (3/3) ... [2019-09-07 19:39:24,567 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem13_label33.c [2019-09-07 19:39:24,579 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-07 19:39:24,594 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-07 19:39:24,620 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-07 19:39:24,675 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-07 19:39:24,676 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-07 19:39:24,676 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-07 19:39:24,676 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-07 19:39:24,677 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-07 19:39:24,677 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-07 19:39:24,677 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-07 19:39:24,677 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-07 19:39:24,677 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-07 19:39:24,726 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states. [2019-09-07 19:39:24,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2019-09-07 19:39:24,734 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:39:24,735 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 19:39:24,737 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:39:24,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:39:24,743 INFO L82 PathProgramCache]: Analyzing trace with hash 966889472, now seen corresponding path program 1 times [2019-09-07 19:39:24,745 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:39:24,746 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:39:24,804 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:39:24,804 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:39:24,805 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:39:24,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:39:25,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 19:39:25,162 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 19:39:25,162 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-07 19:39:25,167 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-07 19:39:25,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-07 19:39:25,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-07 19:39:25,186 INFO L87 Difference]: Start difference. First operand 1119 states. Second operand 4 states. [2019-09-07 19:39:34,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:39:34,396 INFO L93 Difference]: Finished difference Result 3964 states and 7388 transitions. [2019-09-07 19:39:34,397 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-07 19:39:34,399 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 41 [2019-09-07 19:39:34,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:39:34,470 INFO L225 Difference]: With dead ends: 3964 [2019-09-07 19:39:34,470 INFO L226 Difference]: Without dead ends: 2758 [2019-09-07 19:39:34,493 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-07 19:39:34,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2758 states. [2019-09-07 19:39:34,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2758 to 1919. [2019-09-07 19:39:34,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1919 states. [2019-09-07 19:39:34,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1919 states to 1919 states and 3313 transitions. [2019-09-07 19:39:34,738 INFO L78 Accepts]: Start accepts. Automaton has 1919 states and 3313 transitions. Word has length 41 [2019-09-07 19:39:34,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:39:34,739 INFO L475 AbstractCegarLoop]: Abstraction has 1919 states and 3313 transitions. [2019-09-07 19:39:34,739 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-07 19:39:34,740 INFO L276 IsEmpty]: Start isEmpty. Operand 1919 states and 3313 transitions. [2019-09-07 19:39:34,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2019-09-07 19:39:34,747 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:39:34,748 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 19:39:34,748 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:39:34,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:39:34,749 INFO L82 PathProgramCache]: Analyzing trace with hash -1658513383, now seen corresponding path program 1 times [2019-09-07 19:39:34,749 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:39:34,750 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:39:34,751 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:39:34,751 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:39:34,751 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:39:34,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:39:34,982 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 19:39:34,982 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 19:39:34,983 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-07 19:39:34,987 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-07 19:39:34,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-07 19:39:34,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-07 19:39:34,988 INFO L87 Difference]: Start difference. First operand 1919 states and 3313 transitions. Second operand 5 states. [2019-09-07 19:39:42,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:39:42,938 INFO L93 Difference]: Finished difference Result 5545 states and 9710 transitions. [2019-09-07 19:39:42,938 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-07 19:39:42,938 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 110 [2019-09-07 19:39:42,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:39:42,964 INFO L225 Difference]: With dead ends: 5545 [2019-09-07 19:39:42,965 INFO L226 Difference]: Without dead ends: 3632 [2019-09-07 19:39:42,971 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-09-07 19:39:42,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3632 states. [2019-09-07 19:39:43,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3632 to 3623. [2019-09-07 19:39:43,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3623 states. [2019-09-07 19:39:43,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3623 states to 3623 states and 5644 transitions. [2019-09-07 19:39:43,062 INFO L78 Accepts]: Start accepts. Automaton has 3623 states and 5644 transitions. Word has length 110 [2019-09-07 19:39:43,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:39:43,063 INFO L475 AbstractCegarLoop]: Abstraction has 3623 states and 5644 transitions. [2019-09-07 19:39:43,063 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-07 19:39:43,063 INFO L276 IsEmpty]: Start isEmpty. Operand 3623 states and 5644 transitions. [2019-09-07 19:39:43,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2019-09-07 19:39:43,066 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:39:43,066 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 19:39:43,066 INFO L418 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:39:43,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:39:43,067 INFO L82 PathProgramCache]: Analyzing trace with hash -1434785027, now seen corresponding path program 1 times [2019-09-07 19:39:43,067 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:39:43,067 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:39:43,068 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:39:43,068 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:39:43,068 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:39:43,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:39:43,152 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 19:39:43,153 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 19:39:43,153 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-07 19:39:43,153 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-07 19:39:43,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-07 19:39:43,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-07 19:39:43,154 INFO L87 Difference]: Start difference. First operand 3623 states and 5644 transitions. Second operand 5 states. [2019-09-07 19:39:51,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:39:51,303 INFO L93 Difference]: Finished difference Result 10808 states and 17216 transitions. [2019-09-07 19:39:51,304 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-07 19:39:51,304 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 112 [2019-09-07 19:39:51,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:39:51,349 INFO L225 Difference]: With dead ends: 10808 [2019-09-07 19:39:51,352 INFO L226 Difference]: Without dead ends: 7191 [2019-09-07 19:39:51,364 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-09-07 19:39:51,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7191 states. [2019-09-07 19:39:51,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7191 to 7086. [2019-09-07 19:39:51,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7086 states. [2019-09-07 19:39:51,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7086 states to 7086 states and 10105 transitions. [2019-09-07 19:39:51,618 INFO L78 Accepts]: Start accepts. Automaton has 7086 states and 10105 transitions. Word has length 112 [2019-09-07 19:39:51,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:39:51,620 INFO L475 AbstractCegarLoop]: Abstraction has 7086 states and 10105 transitions. [2019-09-07 19:39:51,620 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-07 19:39:51,621 INFO L276 IsEmpty]: Start isEmpty. Operand 7086 states and 10105 transitions. [2019-09-07 19:39:51,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2019-09-07 19:39:51,633 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:39:51,633 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 19:39:51,633 INFO L418 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:39:51,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:39:51,634 INFO L82 PathProgramCache]: Analyzing trace with hash -877925259, now seen corresponding path program 1 times [2019-09-07 19:39:51,635 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:39:51,635 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:39:51,636 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:39:51,636 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:39:51,636 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:39:51,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:39:51,802 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 19:39:51,802 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 19:39:51,803 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-07 19:39:51,803 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-07 19:39:51,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-07 19:39:51,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-07 19:39:51,804 INFO L87 Difference]: Start difference. First operand 7086 states and 10105 transitions. Second operand 4 states. [2019-09-07 19:40:00,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:40:00,359 INFO L93 Difference]: Finished difference Result 27483 states and 41559 transitions. [2019-09-07 19:40:00,359 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-07 19:40:00,359 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 156 [2019-09-07 19:40:00,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:40:00,460 INFO L225 Difference]: With dead ends: 27483 [2019-09-07 19:40:00,460 INFO L226 Difference]: Without dead ends: 20403 [2019-09-07 19:40:00,487 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-07 19:40:00,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20403 states. [2019-09-07 19:40:01,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20403 to 20366. [2019-09-07 19:40:01,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20366 states. [2019-09-07 19:40:01,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20366 states to 20366 states and 28309 transitions. [2019-09-07 19:40:01,232 INFO L78 Accepts]: Start accepts. Automaton has 20366 states and 28309 transitions. Word has length 156 [2019-09-07 19:40:01,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:40:01,234 INFO L475 AbstractCegarLoop]: Abstraction has 20366 states and 28309 transitions. [2019-09-07 19:40:01,234 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-07 19:40:01,235 INFO L276 IsEmpty]: Start isEmpty. Operand 20366 states and 28309 transitions. [2019-09-07 19:40:01,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2019-09-07 19:40:01,246 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:40:01,246 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-07 19:40:01,246 INFO L418 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:40:01,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:40:01,247 INFO L82 PathProgramCache]: Analyzing trace with hash 1187206618, now seen corresponding path program 1 times [2019-09-07 19:40:01,247 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:40:01,248 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:40:01,249 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:40:01,249 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:40:01,249 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:40:01,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:40:01,512 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 175 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 19:40:01,513 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 19:40:01,513 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-07 19:40:01,529 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 19:40:01,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:40:01,650 INFO L256 TraceCheckSpWp]: Trace formula consists of 486 conjuncts, 3 conjunts are in the unsatisfiable core [2019-09-07 19:40:01,675 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 19:40:01,775 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 140 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (2)] Exception during sending of exit command (exit): Broken pipe [2019-09-07 19:40:01,781 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 19:40:01,781 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2019-09-07 19:40:01,782 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-07 19:40:01,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-07 19:40:01,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-09-07 19:40:01,783 INFO L87 Difference]: Start difference. First operand 20366 states and 28309 transitions. Second operand 7 states. [2019-09-07 19:40:16,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:40:16,629 INFO L93 Difference]: Finished difference Result 73226 states and 112114 transitions. [2019-09-07 19:40:16,630 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-09-07 19:40:16,630 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 270 [2019-09-07 19:40:16,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:40:16,932 INFO L225 Difference]: With dead ends: 73226 [2019-09-07 19:40:16,932 INFO L226 Difference]: Without dead ends: 52866 [2019-09-07 19:40:17,042 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 274 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2019-09-07 19:40:17,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52866 states. [2019-09-07 19:40:18,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52866 to 51944. [2019-09-07 19:40:18,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51944 states. [2019-09-07 19:40:18,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51944 states to 51944 states and 71018 transitions. [2019-09-07 19:40:18,440 INFO L78 Accepts]: Start accepts. Automaton has 51944 states and 71018 transitions. Word has length 270 [2019-09-07 19:40:18,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:40:18,440 INFO L475 AbstractCegarLoop]: Abstraction has 51944 states and 71018 transitions. [2019-09-07 19:40:18,440 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-07 19:40:18,441 INFO L276 IsEmpty]: Start isEmpty. Operand 51944 states and 71018 transitions. [2019-09-07 19:40:18,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2019-09-07 19:40:18,448 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:40:18,448 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-07 19:40:18,449 INFO L418 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:40:18,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:40:18,449 INFO L82 PathProgramCache]: Analyzing trace with hash -355476369, now seen corresponding path program 1 times [2019-09-07 19:40:18,449 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:40:18,449 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:40:18,451 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:40:18,451 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:40:18,451 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:40:18,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:40:19,973 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 147 proven. 33 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-09-07 19:40:19,973 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 19:40:19,973 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-07 19:40:19,988 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 19:40:20,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:40:20,074 INFO L256 TraceCheckSpWp]: Trace formula consists of 489 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 19:40:20,088 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 19:40:20,161 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2019-09-07 19:40:20,173 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 19:40:20,173 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2019-09-07 19:40:20,174 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-07 19:40:20,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-07 19:40:20,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-09-07 19:40:20,176 INFO L87 Difference]: Start difference. First operand 51944 states and 71018 transitions. Second operand 6 states. [2019-09-07 19:40:30,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:40:30,060 INFO L93 Difference]: Finished difference Result 110589 states and 154770 transitions. [2019-09-07 19:40:30,061 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-07 19:40:30,062 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 279 [2019-09-07 19:40:30,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:40:30,278 INFO L225 Difference]: With dead ends: 110589 [2019-09-07 19:40:30,278 INFO L226 Difference]: Without dead ends: 58651 [2019-09-07 19:40:30,403 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 283 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2019-09-07 19:40:30,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58651 states. [2019-09-07 19:40:31,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58651 to 56825. [2019-09-07 19:40:31,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56825 states. [2019-09-07 19:40:31,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56825 states to 56825 states and 70452 transitions. [2019-09-07 19:40:31,857 INFO L78 Accepts]: Start accepts. Automaton has 56825 states and 70452 transitions. Word has length 279 [2019-09-07 19:40:31,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:40:31,859 INFO L475 AbstractCegarLoop]: Abstraction has 56825 states and 70452 transitions. [2019-09-07 19:40:31,859 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-07 19:40:31,862 INFO L276 IsEmpty]: Start isEmpty. Operand 56825 states and 70452 transitions. [2019-09-07 19:40:31,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 403 [2019-09-07 19:40:31,887 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:40:31,887 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 19:40:31,887 INFO L418 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:40:31,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:40:31,888 INFO L82 PathProgramCache]: Analyzing trace with hash -726010504, now seen corresponding path program 1 times [2019-09-07 19:40:31,888 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:40:31,888 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:40:31,889 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:40:31,889 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:40:31,889 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:40:31,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:40:32,263 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 310 proven. 2 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2019-09-07 19:40:32,264 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 19:40:32,264 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 19:40:32,276 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:40:32,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:40:32,394 INFO L256 TraceCheckSpWp]: Trace formula consists of 668 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 19:40:32,401 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 19:40:32,757 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 310 proven. 2 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2019-09-07 19:40:32,761 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 19:40:32,761 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 19:40:32,762 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 19:40:32,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 19:40:32,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-07 19:40:32,763 INFO L87 Difference]: Start difference. First operand 56825 states and 70452 transitions. Second operand 9 states. [2019-09-07 19:40:55,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:40:55,131 INFO L93 Difference]: Finished difference Result 158180 states and 226456 transitions. [2019-09-07 19:40:55,132 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2019-09-07 19:40:55,132 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 402 [2019-09-07 19:40:55,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:40:57,626 INFO L225 Difference]: With dead ends: 158180 [2019-09-07 19:40:57,626 INFO L226 Difference]: Without dead ends: 101359 [2019-09-07 19:40:57,756 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 437 GetRequests, 415 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=167, Invalid=385, Unknown=0, NotChecked=0, Total=552 [2019-09-07 19:40:57,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101359 states. [2019-09-07 19:40:59,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101359 to 98076. [2019-09-07 19:40:59,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98076 states. [2019-09-07 19:40:59,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98076 states to 98076 states and 122295 transitions. [2019-09-07 19:40:59,916 INFO L78 Accepts]: Start accepts. Automaton has 98076 states and 122295 transitions. Word has length 402 [2019-09-07 19:40:59,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:40:59,917 INFO L475 AbstractCegarLoop]: Abstraction has 98076 states and 122295 transitions. [2019-09-07 19:40:59,917 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 19:40:59,917 INFO L276 IsEmpty]: Start isEmpty. Operand 98076 states and 122295 transitions. [2019-09-07 19:40:59,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 404 [2019-09-07 19:40:59,952 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:40:59,952 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-07 19:40:59,953 INFO L418 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:40:59,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:40:59,953 INFO L82 PathProgramCache]: Analyzing trace with hash 392645702, now seen corresponding path program 1 times [2019-09-07 19:40:59,953 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:40:59,953 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:40:59,954 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:40:59,954 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:40:59,955 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:40:59,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:41:00,542 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 182 proven. 78 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2019-09-07 19:41:00,542 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 19:41:00,543 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 19:41:00,553 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:41:00,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:41:00,680 INFO L256 TraceCheckSpWp]: Trace formula consists of 666 conjuncts, 3 conjunts are in the unsatisfiable core [2019-09-07 19:41:00,685 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 19:41:00,796 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 268 trivial. 0 not checked. [2019-09-07 19:41:00,800 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 19:41:00,801 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2019-09-07 19:41:00,802 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-07 19:41:00,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-07 19:41:00,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-09-07 19:41:00,802 INFO L87 Difference]: Start difference. First operand 98076 states and 122295 transitions. Second operand 7 states. [2019-09-07 19:41:14,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:41:14,084 INFO L93 Difference]: Finished difference Result 221116 states and 310068 transitions. [2019-09-07 19:41:14,084 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-09-07 19:41:14,084 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 403 [2019-09-07 19:41:14,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:41:14,705 INFO L225 Difference]: With dead ends: 221116 [2019-09-07 19:41:14,705 INFO L226 Difference]: Without dead ends: 128741 [2019-09-07 19:41:14,917 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 422 GetRequests, 410 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2019-09-07 19:41:15,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128741 states. [2019-09-07 19:41:19,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128741 to 127034. [2019-09-07 19:41:19,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127034 states. [2019-09-07 19:41:20,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127034 states to 127034 states and 179622 transitions. [2019-09-07 19:41:20,221 INFO L78 Accepts]: Start accepts. Automaton has 127034 states and 179622 transitions. Word has length 403 [2019-09-07 19:41:20,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:41:20,222 INFO L475 AbstractCegarLoop]: Abstraction has 127034 states and 179622 transitions. [2019-09-07 19:41:20,222 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-07 19:41:20,222 INFO L276 IsEmpty]: Start isEmpty. Operand 127034 states and 179622 transitions. [2019-09-07 19:41:20,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 451 [2019-09-07 19:41:20,276 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:41:20,276 INFO L399 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2019-09-07 19:41:20,276 INFO L418 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:41:20,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:41:20,277 INFO L82 PathProgramCache]: Analyzing trace with hash 1445941960, now seen corresponding path program 1 times [2019-09-07 19:41:20,277 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:41:20,277 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:41:20,278 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:41:20,278 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:41:20,278 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:41:20,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:41:21,233 INFO L134 CoverageAnalysis]: Checked inductivity of 596 backedges. 381 proven. 2 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked. [2019-09-07 19:41:21,234 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 19:41:21,234 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 19:41:21,252 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:41:21,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:41:21,399 INFO L256 TraceCheckSpWp]: Trace formula consists of 759 conjuncts, 2 conjunts are in the unsatisfiable core [2019-09-07 19:41:21,404 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 19:41:21,525 INFO L134 CoverageAnalysis]: Checked inductivity of 596 backedges. 145 proven. 0 refuted. 0 times theorem prover too weak. 451 trivial. 0 not checked. [2019-09-07 19:41:21,537 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 19:41:21,538 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2019-09-07 19:41:21,539 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-07 19:41:21,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-07 19:41:21,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2019-09-07 19:41:21,542 INFO L87 Difference]: Start difference. First operand 127034 states and 179622 transitions. Second operand 7 states. [2019-09-07 19:41:38,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:41:38,123 INFO L93 Difference]: Finished difference Result 224431 states and 310924 transitions. [2019-09-07 19:41:38,124 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-09-07 19:41:38,124 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 450 [2019-09-07 19:41:38,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:41:38,528 INFO L225 Difference]: With dead ends: 224431 [2019-09-07 19:41:38,528 INFO L226 Difference]: Without dead ends: 103923 [2019-09-07 19:41:38,897 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 465 GetRequests, 455 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2019-09-07 19:41:39,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103923 states. [2019-09-07 19:41:40,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103923 to 98923. [2019-09-07 19:41:40,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98923 states. [2019-09-07 19:41:40,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98923 states to 98923 states and 113583 transitions. [2019-09-07 19:41:40,706 INFO L78 Accepts]: Start accepts. Automaton has 98923 states and 113583 transitions. Word has length 450 [2019-09-07 19:41:40,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:41:40,707 INFO L475 AbstractCegarLoop]: Abstraction has 98923 states and 113583 transitions. [2019-09-07 19:41:40,707 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-07 19:41:40,707 INFO L276 IsEmpty]: Start isEmpty. Operand 98923 states and 113583 transitions. [2019-09-07 19:41:40,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 506 [2019-09-07 19:41:40,759 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:41:40,759 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 19:41:40,760 INFO L418 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:41:40,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:41:40,760 INFO L82 PathProgramCache]: Analyzing trace with hash 195914211, now seen corresponding path program 1 times [2019-09-07 19:41:40,760 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:41:40,760 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:41:40,761 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:41:40,761 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:41:40,762 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:41:40,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:41:41,106 INFO L134 CoverageAnalysis]: Checked inductivity of 538 backedges. 362 proven. 33 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2019-09-07 19:41:41,107 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 19:41:41,107 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 19:41:41,116 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:41:41,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:41:41,258 INFO L256 TraceCheckSpWp]: Trace formula consists of 773 conjuncts, 7 conjunts are in the unsatisfiable core [2019-09-07 19:41:41,272 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 19:41:41,371 INFO L134 CoverageAnalysis]: Checked inductivity of 538 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 430 trivial. 0 not checked. [2019-09-07 19:41:41,375 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 19:41:41,375 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 4 [2019-09-07 19:41:41,376 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-07 19:41:41,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-07 19:41:41,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-07 19:41:41,376 INFO L87 Difference]: Start difference. First operand 98923 states and 113583 transitions. Second operand 4 states. [2019-09-07 19:41:48,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:41:48,967 INFO L93 Difference]: Finished difference Result 200689 states and 232362 transitions. [2019-09-07 19:41:48,968 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-07 19:41:48,968 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 505 [2019-09-07 19:41:48,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:41:49,217 INFO L225 Difference]: With dead ends: 200689 [2019-09-07 19:41:49,217 INFO L226 Difference]: Without dead ends: 100146 [2019-09-07 19:41:49,342 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 513 GetRequests, 510 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-09-07 19:41:49,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100146 states. [2019-09-07 19:41:50,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100146 to 97331. [2019-09-07 19:41:50,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97331 states. [2019-09-07 19:41:50,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97331 states to 97331 states and 106650 transitions. [2019-09-07 19:41:50,534 INFO L78 Accepts]: Start accepts. Automaton has 97331 states and 106650 transitions. Word has length 505 [2019-09-07 19:41:50,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:41:50,535 INFO L475 AbstractCegarLoop]: Abstraction has 97331 states and 106650 transitions. [2019-09-07 19:41:50,535 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-07 19:41:50,535 INFO L276 IsEmpty]: Start isEmpty. Operand 97331 states and 106650 transitions. [2019-09-07 19:41:50,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 910 [2019-09-07 19:41:50,639 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:41:50,640 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 19:41:50,641 INFO L418 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:41:50,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:41:50,641 INFO L82 PathProgramCache]: Analyzing trace with hash 1641406681, now seen corresponding path program 1 times [2019-09-07 19:41:50,642 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:41:50,642 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:41:50,642 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:41:50,643 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:41:50,643 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:41:50,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:41:53,992 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2019-09-07 19:41:53,993 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 19:41:53,993 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-07 19:41:53,994 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-07 19:41:53,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-07 19:41:53,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-07 19:41:53,995 INFO L87 Difference]: Start difference. First operand 97331 states and 106650 transitions. Second operand 4 states. [2019-09-07 19:42:05,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:42:05,031 INFO L93 Difference]: Finished difference Result 281840 states and 312872 transitions. [2019-09-07 19:42:05,031 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-07 19:42:05,031 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 909 [2019-09-07 19:42:05,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:42:05,444 INFO L225 Difference]: With dead ends: 281840 [2019-09-07 19:42:05,444 INFO L226 Difference]: Without dead ends: 185329 [2019-09-07 19:42:05,557 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-07 19:42:05,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185329 states. [2019-09-07 19:42:07,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185329 to 159338. [2019-09-07 19:42:07,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159338 states. [2019-09-07 19:42:08,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159338 states to 159338 states and 175896 transitions. [2019-09-07 19:42:08,093 INFO L78 Accepts]: Start accepts. Automaton has 159338 states and 175896 transitions. Word has length 909 [2019-09-07 19:42:08,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:42:08,094 INFO L475 AbstractCegarLoop]: Abstraction has 159338 states and 175896 transitions. [2019-09-07 19:42:08,094 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-07 19:42:08,094 INFO L276 IsEmpty]: Start isEmpty. Operand 159338 states and 175896 transitions. [2019-09-07 19:42:08,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1038 [2019-09-07 19:42:08,231 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:42:08,232 INFO L399 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 19:42:08,232 INFO L418 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:42:08,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:42:08,232 INFO L82 PathProgramCache]: Analyzing trace with hash 108504896, now seen corresponding path program 1 times [2019-09-07 19:42:08,233 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:42:08,233 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:42:08,233 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:42:08,234 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:42:08,234 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:42:08,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:42:12,832 INFO L134 CoverageAnalysis]: Checked inductivity of 686 backedges. 443 proven. 2 refuted. 0 times theorem prover too weak. 241 trivial. 0 not checked. [2019-09-07 19:42:12,832 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 19:42:12,833 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-07 19:42:12,856 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 19:42:13,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:42:13,112 INFO L256 TraceCheckSpWp]: Trace formula consists of 1402 conjuncts, 16 conjunts are in the unsatisfiable core [2019-09-07 19:42:13,126 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 19:42:13,165 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-09-07 19:42:14,084 INFO L134 CoverageAnalysis]: Checked inductivity of 686 backedges. 294 proven. 0 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2019-09-07 19:42:14,099 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 19:42:14,100 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2019-09-07 19:42:14,103 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 19:42:14,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 19:42:14,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-09-07 19:42:14,104 INFO L87 Difference]: Start difference. First operand 159338 states and 175896 transitions. Second operand 9 states. [2019-09-07 19:42:31,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:42:31,555 INFO L93 Difference]: Finished difference Result 349204 states and 382588 transitions. [2019-09-07 19:42:31,555 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2019-09-07 19:42:31,555 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 1037 [2019-09-07 19:42:31,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:42:31,900 INFO L225 Difference]: With dead ends: 349204 [2019-09-07 19:42:31,901 INFO L226 Difference]: Without dead ends: 190691 [2019-09-07 19:42:32,005 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1083 GetRequests, 1056 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=161, Invalid=651, Unknown=0, NotChecked=0, Total=812 [2019-09-07 19:42:32,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190691 states. [2019-09-07 19:42:33,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190691 to 185752. [2019-09-07 19:42:33,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185752 states. [2019-09-07 19:42:33,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185752 states to 185752 states and 199952 transitions. [2019-09-07 19:42:33,851 INFO L78 Accepts]: Start accepts. Automaton has 185752 states and 199952 transitions. Word has length 1037 [2019-09-07 19:42:33,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:42:33,852 INFO L475 AbstractCegarLoop]: Abstraction has 185752 states and 199952 transitions. [2019-09-07 19:42:33,852 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 19:42:33,852 INFO L276 IsEmpty]: Start isEmpty. Operand 185752 states and 199952 transitions. [2019-09-07 19:42:33,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1172 [2019-09-07 19:42:33,960 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:42:33,961 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 19:42:33,961 INFO L418 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:42:33,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:42:33,962 INFO L82 PathProgramCache]: Analyzing trace with hash 737595635, now seen corresponding path program 1 times [2019-09-07 19:42:33,962 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:42:33,962 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:42:33,963 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:42:33,963 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:42:33,963 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:42:34,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:42:38,933 INFO L134 CoverageAnalysis]: Checked inductivity of 668 backedges. 107 proven. 431 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2019-09-07 19:42:38,933 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 19:42:38,934 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 19:42:38,953 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:42:39,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:42:39,250 INFO L256 TraceCheckSpWp]: Trace formula consists of 1517 conjuncts, 6 conjunts are in the unsatisfiable core [2019-09-07 19:42:39,260 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 19:42:39,805 INFO L134 CoverageAnalysis]: Checked inductivity of 668 backedges. 631 proven. 2 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2019-09-07 19:42:39,809 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 19:42:39,810 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 19:42:39,811 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 19:42:39,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 19:42:39,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-07 19:42:39,812 INFO L87 Difference]: Start difference. First operand 185752 states and 199952 transitions. Second operand 9 states. [2019-09-07 19:42:50,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:42:50,033 INFO L93 Difference]: Finished difference Result 364010 states and 393163 transitions. [2019-09-07 19:42:50,033 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-09-07 19:42:50,033 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 1171 [2019-09-07 19:42:50,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:42:50,772 INFO L225 Difference]: With dead ends: 364010 [2019-09-07 19:42:50,772 INFO L226 Difference]: Without dead ends: 170003 [2019-09-07 19:42:50,897 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1193 GetRequests, 1178 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2019-09-07 19:42:51,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170003 states. [2019-09-07 19:42:52,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170003 to 150465. [2019-09-07 19:42:52,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150465 states. [2019-09-07 19:42:52,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150465 states to 150465 states and 160814 transitions. [2019-09-07 19:42:52,461 INFO L78 Accepts]: Start accepts. Automaton has 150465 states and 160814 transitions. Word has length 1171 [2019-09-07 19:42:52,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:42:52,462 INFO L475 AbstractCegarLoop]: Abstraction has 150465 states and 160814 transitions. [2019-09-07 19:42:52,463 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 19:42:52,463 INFO L276 IsEmpty]: Start isEmpty. Operand 150465 states and 160814 transitions. [2019-09-07 19:42:52,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1567 [2019-09-07 19:42:52,596 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:42:52,596 INFO L399 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-07 19:42:52,597 INFO L418 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:42:52,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:42:52,597 INFO L82 PathProgramCache]: Analyzing trace with hash 745488899, now seen corresponding path program 1 times [2019-09-07 19:42:52,597 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:42:52,597 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:42:52,598 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:42:52,598 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:42:52,598 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:42:52,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:42:55,777 INFO L134 CoverageAnalysis]: Checked inductivity of 1571 backedges. 225 proven. 493 refuted. 0 times theorem prover too weak. 853 trivial. 0 not checked. [2019-09-07 19:42:55,777 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 19:42:55,777 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 19:42:55,787 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:42:56,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:42:56,189 INFO L256 TraceCheckSpWp]: Trace formula consists of 2036 conjuncts, 9 conjunts are in the unsatisfiable core [2019-09-07 19:42:56,201 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 19:42:57,078 INFO L134 CoverageAnalysis]: Checked inductivity of 1571 backedges. 655 proven. 2 refuted. 0 times theorem prover too weak. 914 trivial. 0 not checked. [2019-09-07 19:42:57,084 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 19:42:57,085 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 12 [2019-09-07 19:42:57,086 INFO L454 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-09-07 19:42:57,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-09-07 19:42:57,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2019-09-07 19:42:57,087 INFO L87 Difference]: Start difference. First operand 150465 states and 160814 transitions. Second operand 12 states. [2019-09-07 19:43:34,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:43:34,854 INFO L93 Difference]: Finished difference Result 396372 states and 424988 transitions. [2019-09-07 19:43:34,854 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2019-09-07 19:43:34,854 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 1566 [2019-09-07 19:43:34,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:43:35,353 INFO L225 Difference]: With dead ends: 396372 [2019-09-07 19:43:35,353 INFO L226 Difference]: Without dead ends: 246739 [2019-09-07 19:43:35,441 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1616 GetRequests, 1583 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=310, Invalid=880, Unknown=0, NotChecked=0, Total=1190 [2019-09-07 19:43:35,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246739 states. [2019-09-07 19:43:42,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246739 to 238091. [2019-09-07 19:43:42,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238091 states. [2019-09-07 19:43:43,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238091 states to 238091 states and 254324 transitions. [2019-09-07 19:43:43,050 INFO L78 Accepts]: Start accepts. Automaton has 238091 states and 254324 transitions. Word has length 1566 [2019-09-07 19:43:43,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:43:43,050 INFO L475 AbstractCegarLoop]: Abstraction has 238091 states and 254324 transitions. [2019-09-07 19:43:43,050 INFO L476 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-09-07 19:43:43,051 INFO L276 IsEmpty]: Start isEmpty. Operand 238091 states and 254324 transitions. [2019-09-07 19:43:43,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1841 [2019-09-07 19:43:43,294 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:43:43,295 INFO L399 BasicCegarLoop]: trace histogram [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, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 19:43:43,296 INFO L418 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:43:43,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:43:43,296 INFO L82 PathProgramCache]: Analyzing trace with hash -522349743, now seen corresponding path program 1 times [2019-09-07 19:43:43,297 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:43:43,297 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:43:43,297 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:43:43,298 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:43:43,298 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:43:43,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:43:46,398 INFO L134 CoverageAnalysis]: Checked inductivity of 2685 backedges. 287 proven. 1123 refuted. 0 times theorem prover too weak. 1275 trivial. 0 not checked. [2019-09-07 19:43:46,399 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 19:43:46,399 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 19:43:46,409 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:43:46,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:43:46,923 INFO L256 TraceCheckSpWp]: Trace formula consists of 2332 conjuncts, 12 conjunts are in the unsatisfiable core [2019-09-07 19:43:46,945 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 19:43:47,039 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 19:43:48,464 INFO L134 CoverageAnalysis]: Checked inductivity of 2685 backedges. 1284 proven. 2 refuted. 0 times theorem prover too weak. 1399 trivial. 0 not checked. [2019-09-07 19:43:48,470 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 19:43:48,471 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 16 [2019-09-07 19:43:48,472 INFO L454 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-09-07 19:43:48,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-09-07 19:43:48,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2019-09-07 19:43:48,473 INFO L87 Difference]: Start difference. First operand 238091 states and 254324 transitions. Second operand 16 states. [2019-09-07 19:44:30,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:44:30,648 INFO L93 Difference]: Finished difference Result 553973 states and 592863 transitions. [2019-09-07 19:44:30,649 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2019-09-07 19:44:30,649 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 1840 [2019-09-07 19:44:30,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:44:31,229 INFO L225 Difference]: With dead ends: 553973 [2019-09-07 19:44:31,229 INFO L226 Difference]: Without dead ends: 306642 [2019-09-07 19:44:31,368 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 2029 GetRequests, 1919 SyntacticMatches, 1 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4703 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=1752, Invalid=10458, Unknown=0, NotChecked=0, Total=12210 [2019-09-07 19:44:31,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306642 states. [2019-09-07 19:44:34,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306642 to 295067. [2019-09-07 19:44:34,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 295067 states. [2019-09-07 19:44:34,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295067 states to 295067 states and 313430 transitions. [2019-09-07 19:44:34,973 INFO L78 Accepts]: Start accepts. Automaton has 295067 states and 313430 transitions. Word has length 1840 [2019-09-07 19:44:34,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:44:34,973 INFO L475 AbstractCegarLoop]: Abstraction has 295067 states and 313430 transitions. [2019-09-07 19:44:34,973 INFO L476 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-09-07 19:44:34,973 INFO L276 IsEmpty]: Start isEmpty. Operand 295067 states and 313430 transitions. [2019-09-07 19:44:35,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2000 [2019-09-07 19:44:35,284 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:44:35,285 INFO L399 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 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, 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, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-07 19:44:35,285 INFO L418 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:44:35,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:44:35,286 INFO L82 PathProgramCache]: Analyzing trace with hash -67272417, now seen corresponding path program 1 times [2019-09-07 19:44:35,286 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:44:35,286 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:44:35,287 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:44:35,287 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:44:35,287 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:44:35,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:44:43,617 INFO L134 CoverageAnalysis]: Checked inductivity of 3433 backedges. 1071 proven. 259 refuted. 0 times theorem prover too weak. 2103 trivial. 0 not checked. [2019-09-07 19:44:43,617 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 19:44:43,617 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 19:44:43,628 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:44:44,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:44:44,151 INFO L256 TraceCheckSpWp]: Trace formula consists of 2536 conjuncts, 12 conjunts are in the unsatisfiable core [2019-09-07 19:44:44,174 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 19:44:44,252 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-09-07 19:44:45,741 INFO L134 CoverageAnalysis]: Checked inductivity of 3433 backedges. 1117 proven. 2 refuted. 0 times theorem prover too weak. 2314 trivial. 0 not checked. [2019-09-07 19:44:45,747 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 19:44:45,748 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8] total 12 [2019-09-07 19:44:45,750 INFO L454 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-09-07 19:44:45,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-09-07 19:44:45,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2019-09-07 19:44:45,750 INFO L87 Difference]: Start difference. First operand 295067 states and 313430 transitions. Second operand 12 states. [2019-09-07 19:45:30,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:45:30,405 INFO L93 Difference]: Finished difference Result 661921 states and 701791 transitions. [2019-09-07 19:45:30,405 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2019-09-07 19:45:30,406 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 1999 [2019-09-07 19:45:30,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:45:31,215 INFO L225 Difference]: With dead ends: 661921 [2019-09-07 19:45:31,215 INFO L226 Difference]: Without dead ends: 372489 [2019-09-07 19:45:32,062 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 2089 GetRequests, 2036 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 950 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=500, Invalid=2470, Unknown=0, NotChecked=0, Total=2970 [2019-09-07 19:45:32,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372489 states. [2019-09-07 19:45:39,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372489 to 361877. [2019-09-07 19:45:39,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 361877 states. [2019-09-07 19:45:40,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361877 states to 361877 states and 382033 transitions. [2019-09-07 19:45:40,433 INFO L78 Accepts]: Start accepts. Automaton has 361877 states and 382033 transitions. Word has length 1999 [2019-09-07 19:45:40,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:45:40,433 INFO L475 AbstractCegarLoop]: Abstraction has 361877 states and 382033 transitions. [2019-09-07 19:45:40,433 INFO L476 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-09-07 19:45:40,433 INFO L276 IsEmpty]: Start isEmpty. Operand 361877 states and 382033 transitions. [2019-09-07 19:45:40,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2455 [2019-09-07 19:45:40,830 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:45:40,831 INFO L399 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 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, 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 19:45:40,832 INFO L418 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:45:40,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:45:40,832 INFO L82 PathProgramCache]: Analyzing trace with hash 584950006, now seen corresponding path program 1 times [2019-09-07 19:45:40,833 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:45:40,833 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:45:40,833 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:45:40,834 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:45:40,834 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:45:41,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:45:49,966 INFO L134 CoverageAnalysis]: Checked inductivity of 5179 backedges. 538 proven. 2664 refuted. 0 times theorem prover too weak. 1977 trivial. 0 not checked. [2019-09-07 19:45:49,966 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 19:45:49,967 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 19:45:49,978 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:45:50,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:45:50,591 INFO L256 TraceCheckSpWp]: Trace formula consists of 3091 conjuncts, 7 conjunts are in the unsatisfiable core [2019-09-07 19:45:50,608 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 19:45:50,674 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 19:45:53,036 INFO L134 CoverageAnalysis]: Checked inductivity of 5179 backedges. 3183 proven. 2 refuted. 0 times theorem prover too weak. 1994 trivial. 0 not checked. [2019-09-07 19:45:53,041 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 19:45:53,042 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 5] total 17 [2019-09-07 19:45:53,044 INFO L454 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-09-07 19:45:53,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-09-07 19:45:53,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2019-09-07 19:45:53,045 INFO L87 Difference]: Start difference. First operand 361877 states and 382033 transitions. Second operand 17 states. [2019-09-07 19:46:43,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:46:43,369 INFO L93 Difference]: Finished difference Result 748126 states and 794595 transitions. [2019-09-07 19:46:43,370 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2019-09-07 19:46:43,370 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 2454 [2019-09-07 19:46:43,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:46:44,319 INFO L225 Difference]: With dead ends: 748126 [2019-09-07 19:46:44,319 INFO L226 Difference]: Without dead ends: 416121 [2019-09-07 19:46:44,547 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 2708 GetRequests, 2570 SyntacticMatches, 1 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7720 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=2257, Invalid=16925, Unknown=0, NotChecked=0, Total=19182 [2019-09-07 19:46:44,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416121 states. [2019-09-07 19:46:50,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416121 to 394676. [2019-09-07 19:46:50,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 394676 states. [2019-09-07 19:46:50,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394676 states to 394676 states and 417136 transitions. [2019-09-07 19:46:50,720 INFO L78 Accepts]: Start accepts. Automaton has 394676 states and 417136 transitions. Word has length 2454 [2019-09-07 19:46:50,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:46:50,721 INFO L475 AbstractCegarLoop]: Abstraction has 394676 states and 417136 transitions. [2019-09-07 19:46:50,721 INFO L476 AbstractCegarLoop]: Interpolant automaton has 17 states. [2019-09-07 19:46:50,722 INFO L276 IsEmpty]: Start isEmpty. Operand 394676 states and 417136 transitions. [2019-09-07 19:46:51,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2533 [2019-09-07 19:46:51,199 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:46:51,200 INFO L399 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 19:46:51,201 INFO L418 AbstractCegarLoop]: === Iteration 18 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:46:51,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:46:51,201 INFO L82 PathProgramCache]: Analyzing trace with hash -448261012, now seen corresponding path program 1 times [2019-09-07 19:46:51,201 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:46:51,201 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:46:51,202 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:46:51,202 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:46:51,202 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:46:51,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:46:57,929 WARN L188 SmtUtils]: Spent 5.64 s on a formula simplification that was a NOOP. DAG size: 7 [2019-09-07 19:47:01,463 INFO L134 CoverageAnalysis]: Checked inductivity of 5828 backedges. 661 proven. 2288 refuted. 0 times theorem prover too weak. 2879 trivial. 0 not checked. [2019-09-07 19:47:01,463 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 19:47:01,463 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 19:47:01,474 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:47:02,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:47:02,109 INFO L256 TraceCheckSpWp]: Trace formula consists of 3216 conjuncts, 15 conjunts are in the unsatisfiable core [2019-09-07 19:47:02,124 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 19:47:02,228 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 19:47:05,862 INFO L134 CoverageAnalysis]: Checked inductivity of 5828 backedges. 3842 proven. 6 refuted. 0 times theorem prover too weak. 1980 trivial. 0 not checked. [2019-09-07 19:47:05,868 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 19:47:05,869 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8] total 18 [2019-09-07 19:47:05,871 INFO L454 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-09-07 19:47:05,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-09-07 19:47:05,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2019-09-07 19:47:05,872 INFO L87 Difference]: Start difference. First operand 394676 states and 417136 transitions. Second operand 18 states. [2019-09-07 19:47:47,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:47:47,285 INFO L93 Difference]: Finished difference Result 755355 states and 810380 transitions. [2019-09-07 19:47:47,285 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2019-09-07 19:47:47,285 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 2532 [2019-09-07 19:47:47,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:47:48,316 INFO L225 Difference]: With dead ends: 755355 [2019-09-07 19:47:48,317 INFO L226 Difference]: Without dead ends: 412702 [2019-09-07 19:47:48,547 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 2753 GetRequests, 2621 SyntacticMatches, 1 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6785 ImplicationChecksByTransitivity, 9.4s TimeCoverageRelationStatistics Valid=2266, Invalid=15290, Unknown=0, NotChecked=0, Total=17556 [2019-09-07 19:47:48,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412702 states. [2019-09-07 19:47:55,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412702 to 406863. [2019-09-07 19:47:55,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 406863 states. [2019-09-07 19:47:56,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 406863 states to 406863 states and 428855 transitions. [2019-09-07 19:47:56,552 INFO L78 Accepts]: Start accepts. Automaton has 406863 states and 428855 transitions. Word has length 2532 [2019-09-07 19:47:56,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:47:56,552 INFO L475 AbstractCegarLoop]: Abstraction has 406863 states and 428855 transitions. [2019-09-07 19:47:56,553 INFO L476 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-09-07 19:47:56,553 INFO L276 IsEmpty]: Start isEmpty. Operand 406863 states and 428855 transitions. [2019-09-07 19:47:57,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2541 [2019-09-07 19:47:57,045 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:47:57,046 INFO L399 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 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, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 19:47:57,047 INFO L418 AbstractCegarLoop]: === Iteration 19 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:47:57,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:47:57,048 INFO L82 PathProgramCache]: Analyzing trace with hash 1882013469, now seen corresponding path program 1 times [2019-09-07 19:47:57,048 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:47:57,048 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:47:57,049 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:47:57,049 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:47:57,049 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:47:57,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:48:07,785 INFO L134 CoverageAnalysis]: Checked inductivity of 5799 backedges. 951 proven. 1763 refuted. 0 times theorem prover too weak. 3085 trivial. 0 not checked. [2019-09-07 19:48:07,785 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 19:48:07,785 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 19:48:07,796 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:48:08,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:48:08,435 INFO L256 TraceCheckSpWp]: Trace formula consists of 3178 conjuncts, 8 conjunts are in the unsatisfiable core [2019-09-07 19:48:08,449 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 19:48:08,465 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 19:48:08,466 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 19:48:08,584 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 19:48:11,031 INFO L134 CoverageAnalysis]: Checked inductivity of 5799 backedges. 3642 proven. 2 refuted. 0 times theorem prover too weak. 2155 trivial. 0 not checked. [2019-09-07 19:48:11,037 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 19:48:11,037 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 6] total 14 [2019-09-07 19:48:11,040 INFO L454 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-09-07 19:48:11,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-09-07 19:48:11,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2019-09-07 19:48:11,040 INFO L87 Difference]: Start difference. First operand 406863 states and 428855 transitions. Second operand 14 states. [2019-09-07 19:48:42,500 WARN L188 SmtUtils]: Spent 365.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 14 [2019-09-07 19:48:48,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:48:48,146 INFO L93 Difference]: Finished difference Result 821237 states and 867305 transitions. [2019-09-07 19:48:48,146 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2019-09-07 19:48:48,146 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 2540 [2019-09-07 19:48:48,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:48:49,071 INFO L225 Difference]: With dead ends: 821237 [2019-09-07 19:48:49,071 INFO L226 Difference]: Without dead ends: 423231 [2019-09-07 19:48:49,285 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 2673 GetRequests, 2595 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2277 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=977, Invalid=5343, Unknown=0, NotChecked=0, Total=6320 [2019-09-07 19:48:49,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423231 states. [2019-09-07 19:48:54,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423231 to 407363. [2019-09-07 19:48:54,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 407363 states. [2019-09-07 19:49:05,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407363 states to 407363 states and 428730 transitions. [2019-09-07 19:49:05,568 INFO L78 Accepts]: Start accepts. Automaton has 407363 states and 428730 transitions. Word has length 2540 [2019-09-07 19:49:05,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:49:05,569 INFO L475 AbstractCegarLoop]: Abstraction has 407363 states and 428730 transitions. [2019-09-07 19:49:05,570 INFO L476 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-09-07 19:49:05,570 INFO L276 IsEmpty]: Start isEmpty. Operand 407363 states and 428730 transitions. [2019-09-07 19:49:06,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2560 [2019-09-07 19:49:06,115 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:49:06,116 INFO L399 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 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, 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 19:49:06,117 INFO L418 AbstractCegarLoop]: === Iteration 20 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:49:06,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:49:06,118 INFO L82 PathProgramCache]: Analyzing trace with hash -1421991923, now seen corresponding path program 1 times [2019-09-07 19:49:06,118 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:49:06,118 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:49:06,119 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:49:06,119 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:49:06,119 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:49:06,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:49:10,504 INFO L134 CoverageAnalysis]: Checked inductivity of 5983 backedges. 850 proven. 674 refuted. 0 times theorem prover too weak. 4459 trivial. 0 not checked. [2019-09-07 19:49:10,504 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 19:49:10,504 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 19:49:10,523 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:49:11,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:49:11,192 INFO L256 TraceCheckSpWp]: Trace formula consists of 3238 conjuncts, 9 conjunts are in the unsatisfiable core [2019-09-07 19:49:11,230 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 19:49:11,244 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 19:49:11,244 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 19:49:11,301 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 19:49:13,709 INFO L134 CoverageAnalysis]: Checked inductivity of 5983 backedges. 3735 proven. 2 refuted. 0 times theorem prover too weak. 2246 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (16)] Exception during sending of exit command (exit): Broken pipe [2019-09-07 19:49:13,715 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 19:49:13,716 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 10 [2019-09-07 19:49:13,719 INFO L454 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-09-07 19:49:13,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-09-07 19:49:13,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2019-09-07 19:49:13,719 INFO L87 Difference]: Start difference. First operand 407363 states and 428730 transitions. Second operand 10 states. [2019-09-07 19:49:38,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:49:38,725 INFO L93 Difference]: Finished difference Result 772309 states and 810865 transitions. [2019-09-07 19:49:38,725 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2019-09-07 19:49:38,726 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 2559 [2019-09-07 19:49:38,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:49:40,472 INFO L225 Difference]: With dead ends: 772309 [2019-09-07 19:49:40,472 INFO L226 Difference]: Without dead ends: 422693 [2019-09-07 19:49:40,706 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 2626 GetRequests, 2586 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 476 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=317, Invalid=1323, Unknown=0, NotChecked=0, Total=1640 [2019-09-07 19:49:41,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422693 states. [2019-09-07 19:49:46,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422693 to 412181. [2019-09-07 19:49:46,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 412181 states. [2019-09-07 19:49:47,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412181 states to 412181 states and 433736 transitions. [2019-09-07 19:49:47,235 INFO L78 Accepts]: Start accepts. Automaton has 412181 states and 433736 transitions. Word has length 2559 [2019-09-07 19:49:47,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:49:47,236 INFO L475 AbstractCegarLoop]: Abstraction has 412181 states and 433736 transitions. [2019-09-07 19:49:47,236 INFO L476 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-09-07 19:49:47,236 INFO L276 IsEmpty]: Start isEmpty. Operand 412181 states and 433736 transitions. [2019-09-07 19:49:55,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2590 [2019-09-07 19:49:55,684 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:49:55,686 INFO L399 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 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, 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 19:49:55,686 INFO L418 AbstractCegarLoop]: === Iteration 21 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:49:55,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:49:55,687 INFO L82 PathProgramCache]: Analyzing trace with hash 1387437914, now seen corresponding path program 1 times [2019-09-07 19:49:55,687 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:49:55,687 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:49:55,688 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:49:55,688 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:49:55,688 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:49:55,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:50:00,903 INFO L134 CoverageAnalysis]: Checked inductivity of 6175 backedges. 882 proven. 674 refuted. 0 times theorem prover too weak. 4619 trivial. 0 not checked. [2019-09-07 19:50:00,903 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 19:50:00,903 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) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 19:50:00,922 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:50:01,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:50:01,612 INFO L256 TraceCheckSpWp]: Trace formula consists of 3267 conjuncts, 14 conjunts are in the unsatisfiable core [2019-09-07 19:50:01,628 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 19:50:01,657 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 19:50:01,658 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 19:50:06,062 WARN L188 SmtUtils]: Spent 4.38 s on a formula simplification. DAG size of input: 30 DAG size of output: 27 [2019-09-07 19:50:06,083 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 19:50:06,136 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 19:50:08,208 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-09-07 19:50:10,831 INFO L134 CoverageAnalysis]: Checked inductivity of 6175 backedges. 2396 proven. 2 refuted. 0 times theorem prover too weak. 3777 trivial. 0 not checked. [2019-09-07 19:50:10,837 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 19:50:10,838 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8] total 12 [2019-09-07 19:50:10,840 INFO L454 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-09-07 19:50:10,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-09-07 19:50:10,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=106, Unknown=1, NotChecked=0, Total=132 [2019-09-07 19:50:10,841 INFO L87 Difference]: Start difference. First operand 412181 states and 433736 transitions. Second operand 12 states. [2019-09-07 19:50:16,209 WARN L188 SmtUtils]: Spent 2.05 s on a formula simplification. DAG size of input: 57 DAG size of output: 38 [2019-09-07 19:50:44,643 WARN L188 SmtUtils]: Spent 1.37 s on a formula simplification. DAG size of input: 45 DAG size of output: 26 [2019-09-07 19:50:46,298 WARN L188 SmtUtils]: Spent 1.50 s on a formula simplification. DAG size of input: 50 DAG size of output: 31