java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label00.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-07 21:22:00,793 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-07 21:22:00,798 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-07 21:22:00,814 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-07 21:22:00,860 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-07 21:22:00,861 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-07 21:22:00,861 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-07 21:22:00,862 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-09-07 21:22:00,876 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-07 21:22:00,876 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-07 21:22:00,877 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-07 21:22:00,877 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-07 21:22:00,877 INFO L138 SettingsManager]: * Use SBE=true [2019-09-07 21:22:00,878 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-07 21:22:00,878 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-07 21:22:00,878 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-07 21:22:00,878 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-07 21:22:00,878 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-07 21:22:00,879 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-07 21:22:00,879 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-07 21:22:00,879 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-07 21:22:00,879 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-07 21:22:00,879 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-07 21:22:00,880 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-07 21:22:00,880 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-07 21:22:00,880 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-07 21:22:00,880 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-07 21:22:00,880 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-07 21:22:00,881 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-07 21:22:00,881 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-07 21:22:00,881 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-07 21:22:00,881 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-07 21:22:00,881 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-07 21:22:00,882 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-07 21:22:00,882 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-07 21:22:00,882 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-07 21:22:00,882 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-07 21:22:00,921 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-07 21:22:00,931 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-07 21:22:00,934 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-07 21:22:00,935 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-07 21:22:00,936 INFO L275 PluginConnector]: CDTParser initialized [2019-09-07 21:22:00,936 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label00.c [2019-09-07 21:22:00,999 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d5809e2f/ec882150fb604a139b5e3bd1d446da27/FLAGb86a21ccc [2019-09-07 21:22:01,646 INFO L306 CDTParser]: Found 1 translation units. [2019-09-07 21:22:01,648 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label00.c [2019-09-07 21:22:01,675 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d5809e2f/ec882150fb604a139b5e3bd1d446da27/FLAGb86a21ccc [2019-09-07 21:22:01,747 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d5809e2f/ec882150fb604a139b5e3bd1d446da27 [2019-09-07 21:22:01,761 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-07 21:22:01,763 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-07 21:22:01,764 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-07 21:22:01,764 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-07 21:22:01,767 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-07 21:22:01,768 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 09:22:01" (1/1) ... [2019-09-07 21:22:01,772 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65c3f56e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 09:22:01, skipping insertion in model container [2019-09-07 21:22:01,772 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 09:22:01" (1/1) ... [2019-09-07 21:22:01,780 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-07 21:22:01,893 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-07 21:22:02,918 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-07 21:22:02,924 INFO L188 MainTranslator]: Completed pre-run [2019-09-07 21:22:03,288 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-07 21:22:03,310 INFO L192 MainTranslator]: Completed translation [2019-09-07 21:22:03,311 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 09:22:03 WrapperNode [2019-09-07 21:22:03,311 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-07 21:22:03,312 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-07 21:22:03,312 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-07 21:22:03,313 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-07 21:22:03,329 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 09:22:03" (1/1) ... [2019-09-07 21:22:03,329 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 09:22:03" (1/1) ... [2019-09-07 21:22:03,378 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 09:22:03" (1/1) ... [2019-09-07 21:22:03,380 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 09:22:03" (1/1) ... [2019-09-07 21:22:03,474 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 09:22:03" (1/1) ... [2019-09-07 21:22:03,506 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 09:22:03" (1/1) ... [2019-09-07 21:22:03,538 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 09:22:03" (1/1) ... [2019-09-07 21:22:03,573 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-07 21:22:03,573 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-07 21:22:03,573 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-07 21:22:03,574 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-07 21:22:03,575 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 09:22:03" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-07 21:22:03,649 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-07 21:22:03,650 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-07 21:22:03,650 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-09-07 21:22:03,650 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-09-07 21:22:03,650 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-07 21:22:03,651 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-09-07 21:22:03,651 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-09-07 21:22:03,651 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-07 21:22:03,652 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-07 21:22:03,652 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-07 21:22:03,653 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-07 21:22:03,653 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-07 21:22:03,653 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-07 21:22:07,679 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-07 21:22:07,679 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-07 21:22:07,681 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 09:22:07 BoogieIcfgContainer [2019-09-07 21:22:07,681 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-07 21:22:07,682 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-07 21:22:07,682 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-07 21:22:07,685 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-07 21:22:07,686 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.09 09:22:01" (1/3) ... [2019-09-07 21:22:07,689 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cf88b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 09:22:07, skipping insertion in model container [2019-09-07 21:22:07,689 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 09:22:03" (2/3) ... [2019-09-07 21:22:07,690 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cf88b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 09:22:07, skipping insertion in model container [2019-09-07 21:22:07,690 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 09:22:07" (3/3) ... [2019-09-07 21:22:07,692 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem17_label00.c [2019-09-07 21:22:07,706 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-07 21:22:07,716 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-07 21:22:07,740 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-07 21:22:07,787 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-07 21:22:07,788 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-07 21:22:07,788 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-07 21:22:07,788 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-07 21:22:07,788 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-07 21:22:07,788 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-07 21:22:07,788 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-07 21:22:07,789 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-07 21:22:07,789 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-07 21:22:07,822 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states. [2019-09-07 21:22:07,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2019-09-07 21:22:07,833 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 21:22:07,835 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 21:22:07,837 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 21:22:07,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 21:22:07,843 INFO L82 PathProgramCache]: Analyzing trace with hash 1065858481, now seen corresponding path program 1 times [2019-09-07 21:22:07,845 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 21:22:07,846 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 21:22:07,900 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 21:22:07,900 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 21:22:07,900 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 21:22:08,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 21:22:08,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 21:22:08,243 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 21:22:08,244 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-07 21:22:08,248 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-07 21:22:08,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-07 21:22:08,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-07 21:22:08,265 INFO L87 Difference]: Start difference. First operand 603 states. Second operand 4 states. [2019-09-07 21:22:14,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 21:22:14,549 INFO L93 Difference]: Finished difference Result 2135 states and 3957 transitions. [2019-09-07 21:22:14,550 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-07 21:22:14,551 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 60 [2019-09-07 21:22:14,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 21:22:14,578 INFO L225 Difference]: With dead ends: 2135 [2019-09-07 21:22:14,579 INFO L226 Difference]: Without dead ends: 1453 [2019-09-07 21:22:14,589 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-07 21:22:14,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1453 states. [2019-09-07 21:22:14,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1453 to 1451. [2019-09-07 21:22:14,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1451 states. [2019-09-07 21:22:14,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1451 states to 1451 states and 2219 transitions. [2019-09-07 21:22:14,710 INFO L78 Accepts]: Start accepts. Automaton has 1451 states and 2219 transitions. Word has length 60 [2019-09-07 21:22:14,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 21:22:14,711 INFO L475 AbstractCegarLoop]: Abstraction has 1451 states and 2219 transitions. [2019-09-07 21:22:14,711 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-07 21:22:14,712 INFO L276 IsEmpty]: Start isEmpty. Operand 1451 states and 2219 transitions. [2019-09-07 21:22:14,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2019-09-07 21:22:14,717 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 21:22:14,718 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 21:22:14,718 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 21:22:14,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 21:22:14,719 INFO L82 PathProgramCache]: Analyzing trace with hash 264021352, now seen corresponding path program 1 times [2019-09-07 21:22:14,719 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 21:22:14,719 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 21:22:14,720 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 21:22:14,720 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 21:22:14,721 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 21:22:14,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 21:22:15,025 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 3 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 21:22:15,025 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 21:22:15,025 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 21:22:15,048 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 21:22:15,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 21:22:15,114 INFO L256 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 9 conjunts are in the unsatisfiable core [2019-09-07 21:22:15,124 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 21:22:15,181 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 21:22:15,182 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 21:22:15,183 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 21:22:15,187 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 21:22:15,187 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 21:22:15,188 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 21:22:15,190 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 21:22:15,191 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 21:22:39,592 WARN L188 SmtUtils]: Spent 24.32 s on a formula simplification. DAG size of input: 56 DAG size of output: 50 [2019-09-07 21:22:41,712 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 6 terms [2019-09-07 21:22:42,094 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 3 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 21:22:42,106 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 21:22:42,107 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 10 [2019-09-07 21:22:42,110 INFO L454 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-09-07 21:22:42,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-09-07 21:22:42,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2019-09-07 21:22:42,111 INFO L87 Difference]: Start difference. First operand 1451 states and 2219 transitions. Second operand 10 states. [2019-09-07 21:23:23,753 WARN L188 SmtUtils]: Spent 41.22 s on a formula simplification. DAG size of input: 72 DAG size of output: 65 [2019-09-07 21:23:51,297 WARN L188 SmtUtils]: Spent 26.38 s on a formula simplification that was a NOOP. DAG size: 52 [2019-09-07 21:24:29,728 WARN L188 SmtUtils]: Spent 38.35 s on a formula simplification. DAG size of input: 71 DAG size of output: 64 [2019-09-07 21:25:40,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 21:25:40,980 INFO L93 Difference]: Finished difference Result 7125 states and 11657 transitions. [2019-09-07 21:25:40,981 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-09-07 21:25:40,982 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 134 [2019-09-07 21:25:40,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 21:25:41,033 INFO L225 Difference]: With dead ends: 7125 [2019-09-07 21:25:41,033 INFO L226 Difference]: Without dead ends: 5680 [2019-09-07 21:25:41,042 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 133 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 149.0s TimeCoverageRelationStatistics Valid=116, Invalid=296, Unknown=8, NotChecked=0, Total=420 [2019-09-07 21:25:41,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5680 states. [2019-09-07 21:25:41,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5680 to 5517. [2019-09-07 21:25:41,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5517 states. [2019-09-07 21:25:41,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5517 states to 5517 states and 7874 transitions. [2019-09-07 21:25:41,276 INFO L78 Accepts]: Start accepts. Automaton has 5517 states and 7874 transitions. Word has length 134 [2019-09-07 21:25:41,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 21:25:41,279 INFO L475 AbstractCegarLoop]: Abstraction has 5517 states and 7874 transitions. [2019-09-07 21:25:41,279 INFO L476 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-09-07 21:25:41,279 INFO L276 IsEmpty]: Start isEmpty. Operand 5517 states and 7874 transitions. [2019-09-07 21:25:41,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2019-09-07 21:25:41,296 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 21:25:41,296 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 21:25:41,297 INFO L418 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 21:25:41,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 21:25:41,297 INFO L82 PathProgramCache]: Analyzing trace with hash -48282947, now seen corresponding path program 1 times [2019-09-07 21:25:41,297 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 21:25:41,297 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 21:25:41,300 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 21:25:41,301 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 21:25:41,301 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 21:25:41,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 21:25:41,580 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 21:25:41,588 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 21:25:41,588 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-07 21:25:41,589 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-07 21:25:41,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-07 21:25:41,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-09-07 21:25:41,590 INFO L87 Difference]: Start difference. First operand 5517 states and 7874 transitions. Second operand 6 states. [2019-09-07 21:25:45,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 21:25:45,827 INFO L93 Difference]: Finished difference Result 16622 states and 25276 transitions. [2019-09-07 21:25:45,828 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-07 21:25:45,828 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 175 [2019-09-07 21:25:45,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 21:25:45,888 INFO L225 Difference]: With dead ends: 16622 [2019-09-07 21:25:45,889 INFO L226 Difference]: Without dead ends: 11111 [2019-09-07 21:25:45,909 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-09-07 21:25:45,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11111 states. [2019-09-07 21:25:46,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11111 to 11041. [2019-09-07 21:25:46,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11041 states. [2019-09-07 21:25:46,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11041 states to 11041 states and 15337 transitions. [2019-09-07 21:25:46,205 INFO L78 Accepts]: Start accepts. Automaton has 11041 states and 15337 transitions. Word has length 175 [2019-09-07 21:25:46,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 21:25:46,208 INFO L475 AbstractCegarLoop]: Abstraction has 11041 states and 15337 transitions. [2019-09-07 21:25:46,208 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-07 21:25:46,209 INFO L276 IsEmpty]: Start isEmpty. Operand 11041 states and 15337 transitions. [2019-09-07 21:25:46,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2019-09-07 21:25:46,218 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 21:25:46,219 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 21:25:46,219 INFO L418 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 21:25:46,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 21:25:46,220 INFO L82 PathProgramCache]: Analyzing trace with hash 1689858873, now seen corresponding path program 1 times [2019-09-07 21:25:46,220 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 21:25:46,220 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 21:25:46,221 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 21:25:46,221 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 21:25:46,221 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 21:25:46,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 21:25:46,554 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 21:25:46,554 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 21:25:46,555 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-07 21:25:46,555 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-07 21:25:46,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-07 21:25:46,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2019-09-07 21:25:46,556 INFO L87 Difference]: Start difference. First operand 11041 states and 15337 transitions. Second operand 7 states. [2019-09-07 21:25:56,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 21:25:56,904 INFO L93 Difference]: Finished difference Result 28424 states and 44417 transitions. [2019-09-07 21:25:56,905 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-07 21:25:56,905 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 193 [2019-09-07 21:25:56,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 21:25:57,006 INFO L225 Difference]: With dead ends: 28424 [2019-09-07 21:25:57,006 INFO L226 Difference]: Without dead ends: 17389 [2019-09-07 21:25:57,038 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2019-09-07 21:25:57,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17389 states. [2019-09-07 21:25:57,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17389 to 17174. [2019-09-07 21:25:57,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17174 states. [2019-09-07 21:25:57,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17174 states to 17174 states and 25466 transitions. [2019-09-07 21:25:57,674 INFO L78 Accepts]: Start accepts. Automaton has 17174 states and 25466 transitions. Word has length 193 [2019-09-07 21:25:57,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 21:25:57,675 INFO L475 AbstractCegarLoop]: Abstraction has 17174 states and 25466 transitions. [2019-09-07 21:25:57,675 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-07 21:25:57,675 INFO L276 IsEmpty]: Start isEmpty. Operand 17174 states and 25466 transitions. [2019-09-07 21:25:57,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2019-09-07 21:25:57,681 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 21:25:57,682 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 21:25:57,682 INFO L418 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 21:25:57,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 21:25:57,683 INFO L82 PathProgramCache]: Analyzing trace with hash 958148616, now seen corresponding path program 1 times [2019-09-07 21:25:57,683 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 21:25:57,683 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 21:25:57,686 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 21:25:57,686 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 21:25:57,686 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 21:25:57,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 21:25:57,904 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 107 proven. 7 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2019-09-07 21:25:57,904 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 21:25:57,905 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) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 21:25:57,930 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 21:25:58,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 21:25:58,013 INFO L256 TraceCheckSpWp]: Trace formula consists of 411 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 21:25:58,027 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 21:25:58,102 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 178 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 21:25:58,116 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 21:25:58,116 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 21:25:58,117 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 21:25:58,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 21:25:58,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-07 21:25:58,117 INFO L87 Difference]: Start difference. First operand 17174 states and 25466 transitions. Second operand 9 states. [2019-09-07 21:26:03,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 21:26:03,902 INFO L93 Difference]: Finished difference Result 38819 states and 58250 transitions. [2019-09-07 21:26:03,902 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-09-07 21:26:03,902 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 216 [2019-09-07 21:26:03,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 21:26:03,959 INFO L225 Difference]: With dead ends: 38819 [2019-09-07 21:26:03,959 INFO L226 Difference]: Without dead ends: 18475 [2019-09-07 21:26:04,005 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 219 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2019-09-07 21:26:04,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18475 states. [2019-09-07 21:26:04,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18475 to 15769. [2019-09-07 21:26:04,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15769 states. [2019-09-07 21:26:04,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15769 states to 15769 states and 20173 transitions. [2019-09-07 21:26:04,336 INFO L78 Accepts]: Start accepts. Automaton has 15769 states and 20173 transitions. Word has length 216 [2019-09-07 21:26:04,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 21:26:04,337 INFO L475 AbstractCegarLoop]: Abstraction has 15769 states and 20173 transitions. [2019-09-07 21:26:04,337 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 21:26:04,337 INFO L276 IsEmpty]: Start isEmpty. Operand 15769 states and 20173 transitions. [2019-09-07 21:26:04,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2019-09-07 21:26:04,341 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 21:26:04,342 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 21:26:04,342 INFO L418 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 21:26:04,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 21:26:04,342 INFO L82 PathProgramCache]: Analyzing trace with hash 57943764, now seen corresponding path program 1 times [2019-09-07 21:26:04,343 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 21:26:04,343 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 21:26:04,344 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 21:26:04,344 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 21:26:04,344 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 21:26:04,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 21:26:04,577 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 126 proven. 60 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-09-07 21:26:04,578 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 21:26:04,578 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-07 21:26:04,605 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 21:26:04,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 21:26:04,678 INFO L256 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 21:26:04,692 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 21:26:04,758 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 109 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2019-09-07 21:26:04,770 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 21:26:04,770 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2019-09-07 21:26:04,771 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-07 21:26:04,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-07 21:26:04,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2019-09-07 21:26:04,772 INFO L87 Difference]: Start difference. First operand 15769 states and 20173 transitions. Second operand 8 states. [2019-09-07 21:26:10,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 21:26:10,064 INFO L93 Difference]: Finished difference Result 31651 states and 41344 transitions. [2019-09-07 21:26:10,078 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-09-07 21:26:10,078 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 233 [2019-09-07 21:26:10,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 21:26:10,133 INFO L225 Difference]: With dead ends: 31651 [2019-09-07 21:26:10,133 INFO L226 Difference]: Without dead ends: 15888 [2019-09-07 21:26:10,169 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2019-09-07 21:26:10,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15888 states. [2019-09-07 21:26:11,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15888 to 15769. [2019-09-07 21:26:11,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15769 states. [2019-09-07 21:26:11,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15769 states to 15769 states and 20007 transitions. [2019-09-07 21:26:11,180 INFO L78 Accepts]: Start accepts. Automaton has 15769 states and 20007 transitions. Word has length 233 [2019-09-07 21:26:11,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 21:26:11,181 INFO L475 AbstractCegarLoop]: Abstraction has 15769 states and 20007 transitions. [2019-09-07 21:26:11,181 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-07 21:26:11,183 INFO L276 IsEmpty]: Start isEmpty. Operand 15769 states and 20007 transitions. [2019-09-07 21:26:11,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2019-09-07 21:26:11,188 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 21:26:11,188 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-07 21:26:11,189 INFO L418 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 21:26:11,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 21:26:11,189 INFO L82 PathProgramCache]: Analyzing trace with hash -587311358, now seen corresponding path program 1 times [2019-09-07 21:26:11,189 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 21:26:11,189 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 21:26:11,190 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 21:26:11,190 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 21:26:11,190 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 21:26:11,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 21:26:11,418 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 109 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2019-09-07 21:26:11,419 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 21:26:11,419 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-07 21:26:11,420 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-07 21:26:11,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-07 21:26:11,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 21:26:11,420 INFO L87 Difference]: Start difference. First operand 15769 states and 20007 transitions. Second operand 3 states. [2019-09-07 21:26:14,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 21:26:14,448 INFO L93 Difference]: Finished difference Result 42583 states and 55355 transitions. [2019-09-07 21:26:14,451 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-07 21:26:14,451 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 267 [2019-09-07 21:26:14,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 21:26:14,519 INFO L225 Difference]: With dead ends: 42583 [2019-09-07 21:26:14,520 INFO L226 Difference]: Without dead ends: 26820 [2019-09-07 21:26:14,544 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 21:26:14,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26820 states. [2019-09-07 21:26:15,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26820 to 25036. [2019-09-07 21:26:15,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25036 states. [2019-09-07 21:26:15,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25036 states to 25036 states and 32214 transitions. [2019-09-07 21:26:15,060 INFO L78 Accepts]: Start accepts. Automaton has 25036 states and 32214 transitions. Word has length 267 [2019-09-07 21:26:15,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 21:26:15,060 INFO L475 AbstractCegarLoop]: Abstraction has 25036 states and 32214 transitions. [2019-09-07 21:26:15,060 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-07 21:26:15,061 INFO L276 IsEmpty]: Start isEmpty. Operand 25036 states and 32214 transitions. [2019-09-07 21:26:15,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2019-09-07 21:26:15,068 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 21:26:15,068 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 21:26:15,069 INFO L418 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 21:26:15,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 21:26:15,069 INFO L82 PathProgramCache]: Analyzing trace with hash 1079686944, now seen corresponding path program 1 times [2019-09-07 21:26:15,069 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 21:26:15,069 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 21:26:15,070 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 21:26:15,070 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 21:26:15,070 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 21:26:15,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 21:26:15,328 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 167 proven. 142 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2019-09-07 21:26:15,329 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 21:26:15,329 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-07 21:26:15,341 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 21:26:15,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 21:26:15,432 INFO L256 TraceCheckSpWp]: Trace formula consists of 528 conjuncts, 10 conjunts are in the unsatisfiable core [2019-09-07 21:26:15,438 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 21:26:15,454 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 21:26:15,455 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 21:26:15,582 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 257 proven. 2 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2019-09-07 21:26:15,594 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 21:26:15,595 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2019-09-07 21:26:15,595 INFO L454 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-09-07 21:26:15,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-09-07 21:26:15,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2019-09-07 21:26:15,596 INFO L87 Difference]: Start difference. First operand 25036 states and 32214 transitions. Second operand 10 states. [2019-09-07 21:26:26,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 21:26:26,648 INFO L93 Difference]: Finished difference Result 75468 states and 106468 transitions. [2019-09-07 21:26:26,649 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-09-07 21:26:26,649 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 296 [2019-09-07 21:26:26,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 21:26:26,820 INFO L225 Difference]: With dead ends: 75468 [2019-09-07 21:26:26,821 INFO L226 Difference]: Without dead ends: 49518 [2019-09-07 21:26:26,884 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 301 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2019-09-07 21:26:26,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49518 states. [2019-09-07 21:26:27,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49518 to 48838. [2019-09-07 21:26:28,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48838 states. [2019-09-07 21:26:28,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48838 states to 48838 states and 65386 transitions. [2019-09-07 21:26:28,100 INFO L78 Accepts]: Start accepts. Automaton has 48838 states and 65386 transitions. Word has length 296 [2019-09-07 21:26:28,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 21:26:28,101 INFO L475 AbstractCegarLoop]: Abstraction has 48838 states and 65386 transitions. [2019-09-07 21:26:28,101 INFO L476 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-09-07 21:26:28,101 INFO L276 IsEmpty]: Start isEmpty. Operand 48838 states and 65386 transitions. [2019-09-07 21:26:28,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2019-09-07 21:26:28,109 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 21:26:28,109 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 21:26:28,109 INFO L418 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 21:26:28,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 21:26:28,110 INFO L82 PathProgramCache]: Analyzing trace with hash -307569999, now seen corresponding path program 1 times [2019-09-07 21:26:28,110 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 21:26:28,110 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 21:26:28,111 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 21:26:28,111 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 21:26:28,111 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 21:26:28,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 21:26:28,357 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 262 proven. 52 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2019-09-07 21:26:28,358 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 21:26:28,358 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 21:26:28,372 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 21:26:28,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 21:26:28,464 INFO L256 TraceCheckSpWp]: Trace formula consists of 565 conjuncts, 13 conjunts are in the unsatisfiable core [2019-09-07 21:26:28,468 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 21:26:28,488 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 21:26:28,489 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 21:26:28,568 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-09-07 21:26:28,712 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 342 proven. 2 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2019-09-07 21:26:28,715 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 21:26:28,716 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 13 [2019-09-07 21:26:28,716 INFO L454 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-09-07 21:26:28,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-09-07 21:26:28,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2019-09-07 21:26:28,717 INFO L87 Difference]: Start difference. First operand 48838 states and 65386 transitions. Second operand 13 states. [2019-09-07 21:27:00,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 21:27:00,503 INFO L93 Difference]: Finished difference Result 153788 states and 216256 transitions. [2019-09-07 21:27:00,503 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2019-09-07 21:27:00,503 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 332 [2019-09-07 21:27:00,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 21:27:00,897 INFO L225 Difference]: With dead ends: 153788 [2019-09-07 21:27:00,898 INFO L226 Difference]: Without dead ends: 99152 [2019-09-07 21:27:00,998 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 530 GetRequests, 416 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5408 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=2008, Invalid=11332, Unknown=0, NotChecked=0, Total=13340 [2019-09-07 21:27:01,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99152 states. [2019-09-07 21:27:02,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99152 to 92928. [2019-09-07 21:27:02,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92928 states. [2019-09-07 21:27:05,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92928 states to 92928 states and 123594 transitions. [2019-09-07 21:27:05,484 INFO L78 Accepts]: Start accepts. Automaton has 92928 states and 123594 transitions. Word has length 332 [2019-09-07 21:27:05,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 21:27:05,484 INFO L475 AbstractCegarLoop]: Abstraction has 92928 states and 123594 transitions. [2019-09-07 21:27:05,484 INFO L476 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-09-07 21:27:05,485 INFO L276 IsEmpty]: Start isEmpty. Operand 92928 states and 123594 transitions. [2019-09-07 21:27:05,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 434 [2019-09-07 21:27:05,502 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 21:27:05,503 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 21:27:05,503 INFO L418 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 21:27:05,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 21:27:05,503 INFO L82 PathProgramCache]: Analyzing trace with hash -281867603, now seen corresponding path program 1 times [2019-09-07 21:27:05,503 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 21:27:05,504 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 21:27:05,504 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 21:27:05,505 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 21:27:05,505 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 21:27:05,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 21:27:05,886 INFO L134 CoverageAnalysis]: Checked inductivity of 436 backedges. 300 proven. 52 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2019-09-07 21:27:05,886 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 21:27:05,887 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 21:27:05,903 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 21:27:06,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 21:27:06,060 INFO L256 TraceCheckSpWp]: Trace formula consists of 661 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 21:27:06,066 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 21:27:06,095 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 21:27:06,234 INFO L134 CoverageAnalysis]: Checked inductivity of 436 backedges. 350 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2019-09-07 21:27:06,246 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 21:27:06,247 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 10 [2019-09-07 21:27:06,248 INFO L454 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-09-07 21:27:06,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-09-07 21:27:06,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2019-09-07 21:27:06,249 INFO L87 Difference]: Start difference. First operand 92928 states and 123594 transitions. Second operand 10 states. [2019-09-07 21:27:25,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 21:27:25,401 INFO L93 Difference]: Finished difference Result 235396 states and 314758 transitions. [2019-09-07 21:27:25,402 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2019-09-07 21:27:25,402 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 433 [2019-09-07 21:27:25,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 21:27:25,805 INFO L225 Difference]: With dead ends: 235396 [2019-09-07 21:27:25,805 INFO L226 Difference]: Without dead ends: 132681 [2019-09-07 21:27:25,971 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 534 GetRequests, 479 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1081 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=588, Invalid=2604, Unknown=0, NotChecked=0, Total=3192 [2019-09-07 21:27:26,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132681 states. [2019-09-07 21:27:27,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132681 to 123389. [2019-09-07 21:27:27,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123389 states. [2019-09-07 21:27:28,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123389 states to 123389 states and 156168 transitions. [2019-09-07 21:27:28,107 INFO L78 Accepts]: Start accepts. Automaton has 123389 states and 156168 transitions. Word has length 433 [2019-09-07 21:27:28,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 21:27:28,107 INFO L475 AbstractCegarLoop]: Abstraction has 123389 states and 156168 transitions. [2019-09-07 21:27:28,107 INFO L476 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-09-07 21:27:28,107 INFO L276 IsEmpty]: Start isEmpty. Operand 123389 states and 156168 transitions. [2019-09-07 21:27:28,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 535 [2019-09-07 21:27:28,126 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 21:27:28,126 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 21:27:28,127 INFO L418 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 21:27:28,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 21:27:28,127 INFO L82 PathProgramCache]: Analyzing trace with hash 926694846, now seen corresponding path program 1 times [2019-09-07 21:27:28,127 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 21:27:28,127 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 21:27:28,128 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 21:27:28,128 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 21:27:28,128 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 21:27:28,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 21:27:28,610 INFO L134 CoverageAnalysis]: Checked inductivity of 418 backedges. 279 proven. 56 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2019-09-07 21:27:28,612 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 21:27:28,612 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 21:27:28,634 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 21:27:28,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 21:27:28,772 INFO L256 TraceCheckSpWp]: Trace formula consists of 788 conjuncts, 23 conjunts are in the unsatisfiable core [2019-09-07 21:27:28,787 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 21:27:28,831 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 4 terms [2019-09-07 21:27:28,831 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 21:27:28,833 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 21:27:28,836 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 21:27:28,836 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 21:27:28,838 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 21:27:28,839 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 21:27:28,844 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 21:27:28,844 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 21:27:30,963 WARN L188 SmtUtils]: Spent 2.08 s on a formula simplification. DAG size of input: 56 DAG size of output: 21 [2019-09-07 21:27:30,995 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 21:27:30,996 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 21:27:33,380 WARN L188 SmtUtils]: Spent 2.34 s on a formula simplification. DAG size of input: 24 DAG size of output: 21 [2019-09-07 21:27:33,747 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 21:27:35,817 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 21:27:35,818 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 21:27:37,873 WARN L188 SmtUtils]: Spent 2.02 s on a formula simplification that was a NOOP. DAG size: 27 [2019-09-07 21:27:37,907 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-09-07 21:27:38,114 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-09-07 21:27:40,787 INFO L134 CoverageAnalysis]: Checked inductivity of 418 backedges. 6 proven. 384 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-09-07 21:27:40,791 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 21:27:40,791 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 12] total 17 [2019-09-07 21:27:40,792 INFO L454 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-09-07 21:27:40,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-09-07 21:27:40,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=222, Unknown=1, NotChecked=0, Total=272 [2019-09-07 21:27:40,793 INFO L87 Difference]: Start difference. First operand 123389 states and 156168 transitions. Second operand 17 states. [2019-09-07 21:27:43,619 WARN L188 SmtUtils]: Spent 2.33 s on a formula simplification. DAG size of input: 64 DAG size of output: 49 [2019-09-07 21:27:45,739 WARN L188 SmtUtils]: Spent 1.18 s on a formula simplification that was a NOOP. DAG size: 23 [2019-09-07 21:28:44,030 WARN L188 SmtUtils]: Spent 2.13 s on a formula simplification. DAG size of input: 72 DAG size of output: 59 [2019-09-07 21:29:18,355 WARN L188 SmtUtils]: Spent 1.59 s on a formula simplification. DAG size of input: 60 DAG size of output: 47 [2019-09-07 21:30:54,054 WARN L188 SmtUtils]: Spent 4.05 s on a formula simplification. DAG size of input: 31 DAG size of output: 28 [2019-09-07 21:33:14,126 WARN L188 SmtUtils]: Spent 1.31 s on a formula simplification. DAG size of input: 43 DAG size of output: 31 [2019-09-07 21:35:26,277 WARN L188 SmtUtils]: Spent 4.04 s on a formula simplification. DAG size of input: 29 DAG size of output: 26