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/Problem19_label40.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-07 23:19:47,513 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-07 23:19:47,515 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-07 23:19:47,526 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-07 23:19:47,535 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-07 23:19:47,536 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-07 23:19:47,537 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-07 23:19:47,538 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-07 23:19:47,539 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-07 23:19:47,540 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-07 23:19:47,542 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-07 23:19:47,543 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-07 23:19:47,545 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-07 23:19:47,546 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-07 23:19:47,547 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-07 23:19:47,548 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-07 23:19:47,550 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-07 23:19:47,557 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-07 23:19:47,558 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-07 23:19:47,559 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-07 23:19:47,559 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 23:19:47,576 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-07 23:19:47,576 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-07 23:19:47,578 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-07 23:19:47,578 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-07 23:19:47,578 INFO L138 SettingsManager]: * Use SBE=true [2019-09-07 23:19:47,578 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-07 23:19:47,578 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-07 23:19:47,579 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-07 23:19:47,579 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-07 23:19:47,579 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-07 23:19:47,579 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-07 23:19:47,579 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-07 23:19:47,580 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-07 23:19:47,580 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-07 23:19:47,580 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-07 23:19:47,580 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-07 23:19:47,580 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-07 23:19:47,581 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-07 23:19:47,581 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-07 23:19:47,581 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-07 23:19:47,581 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-07 23:19:47,581 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-07 23:19:47,582 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-07 23:19:47,582 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-07 23:19:47,582 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-07 23:19:47,582 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-07 23:19:47,582 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-07 23:19:47,583 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-07 23:19:47,583 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-07 23:19:47,615 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-07 23:19:47,626 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-07 23:19:47,630 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-07 23:19:47,631 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-07 23:19:47,632 INFO L275 PluginConnector]: CDTParser initialized [2019-09-07 23:19:47,633 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label40.c [2019-09-07 23:19:47,703 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8192db6f4/0c05d5e207204e9d97d0051850d5a11d/FLAGce494d468 [2019-09-07 23:19:48,612 INFO L306 CDTParser]: Found 1 translation units. [2019-09-07 23:19:48,614 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label40.c [2019-09-07 23:19:48,660 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8192db6f4/0c05d5e207204e9d97d0051850d5a11d/FLAGce494d468 [2019-09-07 23:19:49,029 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8192db6f4/0c05d5e207204e9d97d0051850d5a11d [2019-09-07 23:19:49,039 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-07 23:19:49,040 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-07 23:19:49,042 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-07 23:19:49,042 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-07 23:19:49,046 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-07 23:19:49,047 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 11:19:49" (1/1) ... [2019-09-07 23:19:49,049 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f1699d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:19:49, skipping insertion in model container [2019-09-07 23:19:49,050 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 11:19:49" (1/1) ... [2019-09-07 23:19:49,058 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-07 23:19:49,337 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-07 23:19:51,610 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-07 23:19:51,616 INFO L188 MainTranslator]: Completed pre-run [2019-09-07 23:19:52,752 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-07 23:19:52,792 INFO L192 MainTranslator]: Completed translation [2019-09-07 23:19:52,793 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:19:52 WrapperNode [2019-09-07 23:19:52,793 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-07 23:19:52,794 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-07 23:19:52,794 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-07 23:19:52,794 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-07 23:19:52,804 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:19:52" (1/1) ... [2019-09-07 23:19:52,804 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:19:52" (1/1) ... [2019-09-07 23:19:52,878 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:19:52" (1/1) ... [2019-09-07 23:19:52,878 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:19:52" (1/1) ... [2019-09-07 23:19:53,083 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:19:52" (1/1) ... [2019-09-07 23:19:53,155 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:19:52" (1/1) ... [2019-09-07 23:19:53,216 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:19:52" (1/1) ... [2019-09-07 23:19:53,262 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-07 23:19:53,263 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-07 23:19:53,263 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-07 23:19:53,264 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-07 23:19:53,265 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:19:52" (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 23:19:53,346 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-07 23:19:53,346 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-07 23:19:53,346 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-09-07 23:19:53,346 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-09-07 23:19:53,347 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-09-07 23:19:53,347 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2019-09-07 23:19:53,347 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2019-09-07 23:19:53,347 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2019-09-07 23:19:53,347 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-07 23:19:53,348 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-09-07 23:19:53,348 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-09-07 23:19:53,348 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-09-07 23:19:53,348 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2019-09-07 23:19:53,348 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2019-09-07 23:19:53,349 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2019-09-07 23:19:53,349 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-07 23:19:53,349 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-07 23:19:53,349 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-07 23:19:53,349 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-07 23:19:53,350 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-07 23:19:53,350 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-07 23:20:03,700 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-07 23:20:03,700 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-07 23:20:03,702 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 11:20:03 BoogieIcfgContainer [2019-09-07 23:20:03,703 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-07 23:20:03,704 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-07 23:20:03,704 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-07 23:20:03,710 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-07 23:20:03,710 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.09 11:19:49" (1/3) ... [2019-09-07 23:20:03,711 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@932936e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 11:20:03, skipping insertion in model container [2019-09-07 23:20:03,712 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:19:52" (2/3) ... [2019-09-07 23:20:03,712 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@932936e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 11:20:03, skipping insertion in model container [2019-09-07 23:20:03,712 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 11:20:03" (3/3) ... [2019-09-07 23:20:03,716 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem19_label40.c [2019-09-07 23:20:03,730 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-07 23:20:03,743 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-07 23:20:03,760 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-07 23:20:03,817 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-07 23:20:03,817 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-07 23:20:03,818 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-07 23:20:03,818 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-07 23:20:03,818 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-07 23:20:03,818 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-07 23:20:03,818 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-07 23:20:03,818 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-07 23:20:03,819 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-07 23:20:03,868 INFO L276 IsEmpty]: Start isEmpty. Operand 1777 states. [2019-09-07 23:20:03,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-09-07 23:20:03,879 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:20:03,880 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] [2019-09-07 23:20:03,882 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:20:03,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:20:03,888 INFO L82 PathProgramCache]: Analyzing trace with hash -16851462, now seen corresponding path program 1 times [2019-09-07 23:20:03,890 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:20:03,890 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:20:03,944 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:20:03,944 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:20:03,944 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:20:04,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:20:04,240 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 23:20:04,243 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 23:20:04,243 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-07 23:20:04,247 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-07 23:20:04,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-07 23:20:04,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 23:20:04,264 INFO L87 Difference]: Start difference. First operand 1777 states. Second operand 3 states. [2019-09-07 23:20:14,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:20:14,981 INFO L93 Difference]: Finished difference Result 4995 states and 9414 transitions. [2019-09-07 23:20:14,982 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-07 23:20:14,983 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2019-09-07 23:20:14,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:20:15,019 INFO L225 Difference]: With dead ends: 4995 [2019-09-07 23:20:15,019 INFO L226 Difference]: Without dead ends: 3156 [2019-09-07 23:20:15,030 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 23:20:15,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3156 states. [2019-09-07 23:20:15,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3156 to 3153. [2019-09-07 23:20:15,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3153 states. [2019-09-07 23:20:15,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3153 states to 3153 states and 5691 transitions. [2019-09-07 23:20:15,283 INFO L78 Accepts]: Start accepts. Automaton has 3153 states and 5691 transitions. Word has length 52 [2019-09-07 23:20:15,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 23:20:15,284 INFO L475 AbstractCegarLoop]: Abstraction has 3153 states and 5691 transitions. [2019-09-07 23:20:15,284 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-07 23:20:15,285 INFO L276 IsEmpty]: Start isEmpty. Operand 3153 states and 5691 transitions. [2019-09-07 23:20:15,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2019-09-07 23:20:15,291 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:20:15,292 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:20:15,292 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:20:15,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:20:15,292 INFO L82 PathProgramCache]: Analyzing trace with hash -297980441, now seen corresponding path program 1 times [2019-09-07 23:20:15,293 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:20:15,293 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:20:15,294 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:20:15,294 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:20:15,294 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:20:15,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:20:15,518 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 23:20:15,519 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 23:20:15,519 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-07 23:20:15,521 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-07 23:20:15,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-07 23:20:15,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-09-07 23:20:15,522 INFO L87 Difference]: Start difference. First operand 3153 states and 5691 transitions. Second operand 6 states. [2019-09-07 23:20:28,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:20:28,875 INFO L93 Difference]: Finished difference Result 7845 states and 14066 transitions. [2019-09-07 23:20:28,876 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-07 23:20:28,876 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 123 [2019-09-07 23:20:28,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:20:28,906 INFO L225 Difference]: With dead ends: 7845 [2019-09-07 23:20:28,906 INFO L226 Difference]: Without dead ends: 4698 [2019-09-07 23:20:28,916 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 23:20:28,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4698 states. [2019-09-07 23:20:29,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4698 to 4645. [2019-09-07 23:20:29,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4645 states. [2019-09-07 23:20:29,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4645 states to 4645 states and 7795 transitions. [2019-09-07 23:20:29,090 INFO L78 Accepts]: Start accepts. Automaton has 4645 states and 7795 transitions. Word has length 123 [2019-09-07 23:20:29,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 23:20:29,092 INFO L475 AbstractCegarLoop]: Abstraction has 4645 states and 7795 transitions. [2019-09-07 23:20:29,092 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-07 23:20:29,092 INFO L276 IsEmpty]: Start isEmpty. Operand 4645 states and 7795 transitions. [2019-09-07 23:20:29,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2019-09-07 23:20:29,103 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:20:29,103 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:20:29,104 INFO L418 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:20:29,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:20:29,105 INFO L82 PathProgramCache]: Analyzing trace with hash 1089068732, now seen corresponding path program 1 times [2019-09-07 23:20:29,105 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:20:29,105 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:20:29,106 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:20:29,106 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:20:29,107 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:20:29,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:20:29,246 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 23:20:29,247 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 23:20:29,248 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-07 23:20:29,249 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-07 23:20:29,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-07 23:20:29,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-09-07 23:20:29,250 INFO L87 Difference]: Start difference. First operand 4645 states and 7795 transitions. Second operand 6 states. [2019-09-07 23:20:42,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:20:42,466 INFO L93 Difference]: Finished difference Result 13954 states and 23756 transitions. [2019-09-07 23:20:42,468 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-07 23:20:42,469 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 125 [2019-09-07 23:20:42,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:20:42,519 INFO L225 Difference]: With dead ends: 13954 [2019-09-07 23:20:42,520 INFO L226 Difference]: Without dead ends: 9315 [2019-09-07 23:20:42,538 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-09-07 23:20:42,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9315 states. [2019-09-07 23:20:42,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9315 to 9121. [2019-09-07 23:20:42,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9121 states. [2019-09-07 23:20:42,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9121 states to 9121 states and 15295 transitions. [2019-09-07 23:20:42,784 INFO L78 Accepts]: Start accepts. Automaton has 9121 states and 15295 transitions. Word has length 125 [2019-09-07 23:20:42,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 23:20:42,786 INFO L475 AbstractCegarLoop]: Abstraction has 9121 states and 15295 transitions. [2019-09-07 23:20:42,786 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-07 23:20:42,787 INFO L276 IsEmpty]: Start isEmpty. Operand 9121 states and 15295 transitions. [2019-09-07 23:20:42,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2019-09-07 23:20:42,794 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:20:42,794 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:20:42,794 INFO L418 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:20:42,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:20:42,795 INFO L82 PathProgramCache]: Analyzing trace with hash -1921984805, now seen corresponding path program 1 times [2019-09-07 23:20:42,795 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:20:42,795 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:20:42,796 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:20:42,796 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:20:42,796 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:20:42,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:20:43,002 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 23:20:43,002 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 23:20:43,002 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-07 23:20:43,003 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-07 23:20:43,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-07 23:20:43,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-09-07 23:20:43,003 INFO L87 Difference]: Start difference. First operand 9121 states and 15295 transitions. Second operand 6 states. [2019-09-07 23:21:07,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:21:07,632 INFO L93 Difference]: Finished difference Result 35959 states and 63877 transitions. [2019-09-07 23:21:07,633 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-07 23:21:07,633 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 147 [2019-09-07 23:21:07,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:21:07,730 INFO L225 Difference]: With dead ends: 35959 [2019-09-07 23:21:07,731 INFO L226 Difference]: Without dead ends: 26844 [2019-09-07 23:21:07,761 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-09-07 23:21:07,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26844 states. [2019-09-07 23:21:08,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26844 to 26785. [2019-09-07 23:21:08,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26785 states. [2019-09-07 23:21:08,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26785 states to 26785 states and 42356 transitions. [2019-09-07 23:21:08,443 INFO L78 Accepts]: Start accepts. Automaton has 26785 states and 42356 transitions. Word has length 147 [2019-09-07 23:21:08,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 23:21:08,446 INFO L475 AbstractCegarLoop]: Abstraction has 26785 states and 42356 transitions. [2019-09-07 23:21:08,446 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-07 23:21:08,446 INFO L276 IsEmpty]: Start isEmpty. Operand 26785 states and 42356 transitions. [2019-09-07 23:21:08,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2019-09-07 23:21:08,450 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:21:08,451 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:21:08,451 INFO L418 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:21:08,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:21:08,451 INFO L82 PathProgramCache]: Analyzing trace with hash 1260297143, now seen corresponding path program 1 times [2019-09-07 23:21:08,452 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:21:08,452 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:21:08,455 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:21:08,455 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:21:08,455 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:21:08,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:21:08,605 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 23:21:08,605 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 23:21:08,606 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-07 23:21:08,606 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-07 23:21:08,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-07 23:21:08,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-07 23:21:08,607 INFO L87 Difference]: Start difference. First operand 26785 states and 42356 transitions. Second operand 5 states. [2019-09-07 23:21:24,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:21:24,771 INFO L93 Difference]: Finished difference Result 81280 states and 138344 transitions. [2019-09-07 23:21:24,771 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-07 23:21:24,772 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 156 [2019-09-07 23:21:24,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:21:25,062 INFO L225 Difference]: With dead ends: 81280 [2019-09-07 23:21:25,062 INFO L226 Difference]: Without dead ends: 54501 [2019-09-07 23:21:25,197 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 23:21:25,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54501 states. [2019-09-07 23:21:26,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54501 to 53944. [2019-09-07 23:21:26,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53944 states. [2019-09-07 23:21:26,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53944 states to 53944 states and 80603 transitions. [2019-09-07 23:21:26,780 INFO L78 Accepts]: Start accepts. Automaton has 53944 states and 80603 transitions. Word has length 156 [2019-09-07 23:21:26,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 23:21:26,781 INFO L475 AbstractCegarLoop]: Abstraction has 53944 states and 80603 transitions. [2019-09-07 23:21:26,781 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-07 23:21:26,781 INFO L276 IsEmpty]: Start isEmpty. Operand 53944 states and 80603 transitions. [2019-09-07 23:21:26,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2019-09-07 23:21:26,785 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:21:26,786 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:21:26,786 INFO L418 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:21:26,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:21:26,786 INFO L82 PathProgramCache]: Analyzing trace with hash -1542002792, now seen corresponding path program 1 times [2019-09-07 23:21:26,786 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:21:26,787 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:21:26,788 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:21:26,788 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:21:26,788 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:21:26,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:21:26,977 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 23:21:26,978 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 23:21:26,978 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-07 23:21:26,978 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-07 23:21:26,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-07 23:21:26,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-09-07 23:21:26,979 INFO L87 Difference]: Start difference. First operand 53944 states and 80603 transitions. Second operand 6 states. [2019-09-07 23:21:43,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:21:43,081 INFO L93 Difference]: Finished difference Result 124814 states and 196113 transitions. [2019-09-07 23:21:43,082 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-07 23:21:43,082 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 184 [2019-09-07 23:21:43,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:21:43,400 INFO L225 Difference]: With dead ends: 124814 [2019-09-07 23:21:43,401 INFO L226 Difference]: Without dead ends: 70876 [2019-09-07 23:21:43,533 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-09-07 23:21:43,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70876 states. [2019-09-07 23:21:45,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70876 to 70649. [2019-09-07 23:21:45,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70649 states. [2019-09-07 23:21:45,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70649 states to 70649 states and 104478 transitions. [2019-09-07 23:21:45,223 INFO L78 Accepts]: Start accepts. Automaton has 70649 states and 104478 transitions. Word has length 184 [2019-09-07 23:21:45,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 23:21:45,224 INFO L475 AbstractCegarLoop]: Abstraction has 70649 states and 104478 transitions. [2019-09-07 23:21:45,224 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-07 23:21:45,224 INFO L276 IsEmpty]: Start isEmpty. Operand 70649 states and 104478 transitions. [2019-09-07 23:21:45,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2019-09-07 23:21:45,229 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:21:45,229 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 23:21:45,230 INFO L418 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:21:45,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:21:45,230 INFO L82 PathProgramCache]: Analyzing trace with hash -1669475458, now seen corresponding path program 1 times [2019-09-07 23:21:45,230 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:21:45,230 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:21:45,231 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:21:45,231 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:21:45,232 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:21:45,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:21:45,370 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 90 proven. 65 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-09-07 23:21:45,370 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 23:21:45,371 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 23:21:45,390 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:21:45,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:21:45,474 INFO L256 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 2 conjunts are in the unsatisfiable core [2019-09-07 23:21:45,487 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 23:21:45,579 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (2)] Exception during sending of exit command (exit): Stream closed [2019-09-07 23:21:45,592 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 23:21:45,592 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2019-09-07 23:21:45,593 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-07 23:21:45,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-07 23:21:45,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-09-07 23:21:45,594 INFO L87 Difference]: Start difference. First operand 70649 states and 104478 transitions. Second operand 7 states. [2019-09-07 23:22:09,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:22:09,688 INFO L93 Difference]: Finished difference Result 192441 states and 304009 transitions. [2019-09-07 23:22:09,688 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-09-07 23:22:09,688 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 221 [2019-09-07 23:22:09,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:22:10,360 INFO L225 Difference]: With dead ends: 192441 [2019-09-07 23:22:10,360 INFO L226 Difference]: Without dead ends: 121798 [2019-09-07 23:22:10,678 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 230 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 23:22:10,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121798 states. [2019-09-07 23:22:13,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121798 to 121483. [2019-09-07 23:22:13,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121483 states. [2019-09-07 23:22:14,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121483 states to 121483 states and 166369 transitions. [2019-09-07 23:22:14,246 INFO L78 Accepts]: Start accepts. Automaton has 121483 states and 166369 transitions. Word has length 221 [2019-09-07 23:22:14,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 23:22:14,246 INFO L475 AbstractCegarLoop]: Abstraction has 121483 states and 166369 transitions. [2019-09-07 23:22:14,246 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-07 23:22:14,246 INFO L276 IsEmpty]: Start isEmpty. Operand 121483 states and 166369 transitions. [2019-09-07 23:22:14,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2019-09-07 23:22:14,251 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:22:14,252 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-07 23:22:14,252 INFO L418 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:22:14,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:22:14,253 INFO L82 PathProgramCache]: Analyzing trace with hash 1157402456, now seen corresponding path program 1 times [2019-09-07 23:22:14,253 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:22:14,253 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:22:14,254 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:22:14,254 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:22:14,254 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:22:14,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:22:14,482 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 90 proven. 77 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-09-07 23:22:14,483 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 23:22:14,483 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 23:22:14,497 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 23:22:14,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:22:14,580 INFO L256 TraceCheckSpWp]: Trace formula consists of 468 conjuncts, 2 conjunts are in the unsatisfiable core [2019-09-07 23:22:14,597 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 23:22:14,681 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2019-09-07 23:22:14,687 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 23:22:14,687 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2019-09-07 23:22:14,688 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-07 23:22:14,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-07 23:22:14,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-09-07 23:22:14,689 INFO L87 Difference]: Start difference. First operand 121483 states and 166369 transitions. Second operand 7 states. [2019-09-07 23:22:43,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:22:43,429 INFO L93 Difference]: Finished difference Result 438200 states and 640262 transitions. [2019-09-07 23:22:43,429 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-09-07 23:22:43,429 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 256 [2019-09-07 23:22:43,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:22:44,404 INFO L225 Difference]: With dead ends: 438200 [2019-09-07 23:22:44,404 INFO L226 Difference]: Without dead ends: 316723 [2019-09-07 23:22:45,262 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 269 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=96, Invalid=246, Unknown=0, NotChecked=0, Total=342 [2019-09-07 23:22:45,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316723 states. [2019-09-07 23:22:49,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316723 to 291140. [2019-09-07 23:22:49,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 291140 states. [2019-09-07 23:22:49,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291140 states to 291140 states and 393632 transitions. [2019-09-07 23:22:49,663 INFO L78 Accepts]: Start accepts. Automaton has 291140 states and 393632 transitions. Word has length 256 [2019-09-07 23:22:49,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 23:22:49,663 INFO L475 AbstractCegarLoop]: Abstraction has 291140 states and 393632 transitions. [2019-09-07 23:22:49,663 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-07 23:22:49,663 INFO L276 IsEmpty]: Start isEmpty. Operand 291140 states and 393632 transitions. [2019-09-07 23:22:49,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 973 [2019-09-07 23:22:49,699 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:22:49,700 INFO L399 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-07 23:22:49,701 INFO L418 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:22:49,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:22:49,701 INFO L82 PathProgramCache]: Analyzing trace with hash -303054941, now seen corresponding path program 1 times [2019-09-07 23:22:49,701 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:22:49,701 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:22:49,702 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:22:49,702 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:22:49,703 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:22:54,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:22:56,027 INFO L134 CoverageAnalysis]: Checked inductivity of 901 backedges. 392 proven. 399 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2019-09-07 23:22:56,028 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 23:22:56,028 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 23:22:56,037 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:22:56,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:22:56,274 INFO L256 TraceCheckSpWp]: Trace formula consists of 1299 conjuncts, 5 conjunts are in the unsatisfiable core [2019-09-07 23:22:56,285 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 23:22:56,645 INFO L134 CoverageAnalysis]: Checked inductivity of 901 backedges. 642 proven. 2 refuted. 0 times theorem prover too weak. 257 trivial. 0 not checked. [2019-09-07 23:22:56,650 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 23:22:56,651 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 12 [2019-09-07 23:22:56,653 INFO L454 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-09-07 23:22:56,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-09-07 23:22:56,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2019-09-07 23:22:56,653 INFO L87 Difference]: Start difference. First operand 291140 states and 393632 transitions. Second operand 12 states. [2019-09-07 23:24:18,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:24:18,992 INFO L93 Difference]: Finished difference Result 803835 states and 1092313 transitions. [2019-09-07 23:24:18,992 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2019-09-07 23:24:18,992 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 972 [2019-09-07 23:24:18,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:24:20,655 INFO L225 Difference]: With dead ends: 803835 [2019-09-07 23:24:20,656 INFO L226 Difference]: Without dead ends: 479920 [2019-09-07 23:24:21,007 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1148 GetRequests, 1051 SyntacticMatches, 2 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3535 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1220, Invalid=8092, Unknown=0, NotChecked=0, Total=9312 [2019-09-07 23:24:21,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479920 states. [2019-09-07 23:24:33,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479920 to 447144. [2019-09-07 23:24:33,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 447144 states. [2019-09-07 23:24:35,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447144 states to 447144 states and 524066 transitions. [2019-09-07 23:24:35,636 INFO L78 Accepts]: Start accepts. Automaton has 447144 states and 524066 transitions. Word has length 972 [2019-09-07 23:24:35,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 23:24:35,638 INFO L475 AbstractCegarLoop]: Abstraction has 447144 states and 524066 transitions. [2019-09-07 23:24:35,638 INFO L476 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-09-07 23:24:35,638 INFO L276 IsEmpty]: Start isEmpty. Operand 447144 states and 524066 transitions. [2019-09-07 23:24:35,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1117 [2019-09-07 23:24:35,663 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:24:35,664 INFO L399 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-07 23:24:35,664 INFO L418 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:24:35,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:24:35,665 INFO L82 PathProgramCache]: Analyzing trace with hash 1046716489, now seen corresponding path program 1 times [2019-09-07 23:24:35,665 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:24:35,665 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:24:35,666 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:24:35,666 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:24:35,666 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:24:35,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:24:42,185 INFO L134 CoverageAnalysis]: Checked inductivity of 1155 backedges. 749 proven. 2 refuted. 0 times theorem prover too weak. 404 trivial. 0 not checked. [2019-09-07 23:24:42,185 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 23:24:42,185 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 23:24:42,196 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:24:42,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:24:42,467 INFO L256 TraceCheckSpWp]: Trace formula consists of 1438 conjuncts, 7 conjunts are in the unsatisfiable core [2019-09-07 23:24:42,479 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 23:24:42,967 INFO L134 CoverageAnalysis]: Checked inductivity of 1155 backedges. 749 proven. 2 refuted. 0 times theorem prover too weak. 404 trivial. 0 not checked. [2019-09-07 23:24:42,971 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 23:24:42,972 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 6 [2019-09-07 23:24:42,974 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-07 23:24:42,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-07 23:24:42,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-09-07 23:24:42,975 INFO L87 Difference]: Start difference. First operand 447144 states and 524066 transitions. Second operand 6 states. [2019-09-07 23:25:01,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:25:01,600 INFO L93 Difference]: Finished difference Result 903023 states and 1058522 transitions. [2019-09-07 23:25:01,600 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-07 23:25:01,600 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 1116 [2019-09-07 23:25:01,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:25:02,714 INFO L225 Difference]: With dead ends: 903023 [2019-09-07 23:25:02,714 INFO L226 Difference]: Without dead ends: 454429 [2019-09-07 23:25:04,020 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1127 GetRequests, 1120 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2019-09-07 23:25:04,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454429 states. [2019-09-07 23:25:16,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454429 to 447037. [2019-09-07 23:25:16,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 447037 states. [2019-09-07 23:25:16,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447037 states to 447037 states and 514550 transitions. [2019-09-07 23:25:16,868 INFO L78 Accepts]: Start accepts. Automaton has 447037 states and 514550 transitions. Word has length 1116 [2019-09-07 23:25:16,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 23:25:16,871 INFO L475 AbstractCegarLoop]: Abstraction has 447037 states and 514550 transitions. [2019-09-07 23:25:16,871 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-07 23:25:16,871 INFO L276 IsEmpty]: Start isEmpty. Operand 447037 states and 514550 transitions. [2019-09-07 23:25:16,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1135 [2019-09-07 23:25:16,896 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:25:16,898 INFO L399 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:25:16,898 INFO L418 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:25:16,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:25:16,899 INFO L82 PathProgramCache]: Analyzing trace with hash -1967887977, now seen corresponding path program 1 times [2019-09-07 23:25:16,899 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:25:16,899 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:25:16,900 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:25:16,901 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:25:16,901 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:25:17,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:25:23,653 INFO L134 CoverageAnalysis]: Checked inductivity of 1491 backedges. 570 proven. 205 refuted. 0 times theorem prover too weak. 716 trivial. 0 not checked. [2019-09-07 23:25:23,654 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 23:25:23,654 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 23:25:23,664 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:25:23,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:25:23,935 INFO L256 TraceCheckSpWp]: Trace formula consists of 1507 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 23:25:23,949 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 23:25:24,420 INFO L134 CoverageAnalysis]: Checked inductivity of 1491 backedges. 1083 proven. 2 refuted. 0 times theorem prover too weak. 406 trivial. 0 not checked. [2019-09-07 23:25:24,424 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 23:25:24,424 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 23:25:24,426 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 23:25:24,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 23:25:24,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-07 23:25:24,426 INFO L87 Difference]: Start difference. First operand 447037 states and 514550 transitions. Second operand 9 states. [2019-09-07 23:26:02,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:26:02,277 INFO L93 Difference]: Finished difference Result 1087275 states and 1316932 transitions. [2019-09-07 23:26:02,277 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-09-07 23:26:02,277 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 1134 [2019-09-07 23:26:02,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:26:05,866 INFO L225 Difference]: With dead ends: 1087275 [2019-09-07 23:26:05,867 INFO L226 Difference]: Without dead ends: 634356 [2019-09-07 23:26:06,279 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1157 GetRequests, 1141 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2019-09-07 23:26:06,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634356 states. [2019-09-07 23:26:25,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634356 to 623371. [2019-09-07 23:26:25,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 623371 states. [2019-09-07 23:26:27,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 623371 states to 623371 states and 734408 transitions. [2019-09-07 23:26:27,266 INFO L78 Accepts]: Start accepts. Automaton has 623371 states and 734408 transitions. Word has length 1134 [2019-09-07 23:26:27,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 23:26:27,268 INFO L475 AbstractCegarLoop]: Abstraction has 623371 states and 734408 transitions. [2019-09-07 23:26:27,268 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 23:26:27,268 INFO L276 IsEmpty]: Start isEmpty. Operand 623371 states and 734408 transitions. [2019-09-07 23:26:27,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1153 [2019-09-07 23:26:27,289 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:26:27,290 INFO L399 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:26:27,290 INFO L418 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:26:27,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:26:27,291 INFO L82 PathProgramCache]: Analyzing trace with hash 87421401, now seen corresponding path program 1 times [2019-09-07 23:26:27,291 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:26:27,291 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:26:27,292 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:26:27,292 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:26:27,292 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:26:27,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:26:35,658 INFO L134 CoverageAnalysis]: Checked inductivity of 1511 backedges. 190 proven. 646 refuted. 0 times theorem prover too weak. 675 trivial. 0 not checked. [2019-09-07 23:26:35,658 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 23:26:35,658 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 23:26:35,671 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:26:35,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:26:35,939 INFO L256 TraceCheckSpWp]: Trace formula consists of 1525 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 23:26:35,953 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 23:26:36,880 INFO L134 CoverageAnalysis]: Checked inductivity of 1511 backedges. 237 proven. 0 refuted. 0 times theorem prover too weak. 1274 trivial. 0 not checked. [2019-09-07 23:26:36,884 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 23:26:36,884 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2019-09-07 23:26:36,886 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 23:26:36,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 23:26:36,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2019-09-07 23:26:36,887 INFO L87 Difference]: Start difference. First operand 623371 states and 734408 transitions. Second operand 9 states. [2019-09-07 23:27:14,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:27:14,195 INFO L93 Difference]: Finished difference Result 1326847 states and 1556343 transitions. [2019-09-07 23:27:14,196 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-09-07 23:27:14,196 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 1152 [2019-09-07 23:27:14,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:27:16,784 INFO L225 Difference]: With dead ends: 1326847 [2019-09-07 23:27:16,784 INFO L226 Difference]: Without dead ends: 699297 [2019-09-07 23:27:17,341 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1179 GetRequests, 1163 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=76, Invalid=196, Unknown=0, NotChecked=0, Total=272 [2019-09-07 23:27:27,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 699297 states. [2019-09-07 23:27:34,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 699297 to 678631. [2019-09-07 23:27:34,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 678631 states. [2019-09-07 23:27:36,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 678631 states to 678631 states and 779225 transitions. [2019-09-07 23:27:36,864 INFO L78 Accepts]: Start accepts. Automaton has 678631 states and 779225 transitions. Word has length 1152 [2019-09-07 23:27:36,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 23:27:36,865 INFO L475 AbstractCegarLoop]: Abstraction has 678631 states and 779225 transitions. [2019-09-07 23:27:36,866 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 23:27:36,866 INFO L276 IsEmpty]: Start isEmpty. Operand 678631 states and 779225 transitions. [2019-09-07 23:27:36,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1396 [2019-09-07 23:27:36,909 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:27:36,910 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, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:27:36,910 INFO L418 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:27:36,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:27:36,911 INFO L82 PathProgramCache]: Analyzing trace with hash 1299807948, now seen corresponding path program 1 times [2019-09-07 23:27:36,911 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:27:36,911 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:27:36,913 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:27:36,913 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:27:36,913 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:27:37,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:27:47,679 INFO L134 CoverageAnalysis]: Checked inductivity of 2343 backedges. 1123 proven. 2 refuted. 0 times theorem prover too weak. 1218 trivial. 0 not checked. [2019-09-07 23:27:47,680 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 23:27:47,680 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 23:27:47,690 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:27:47,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:27:47,997 INFO L256 TraceCheckSpWp]: Trace formula consists of 1809 conjuncts, 10 conjunts are in the unsatisfiable core [2019-09-07 23:27:48,009 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 23:27:48,955 INFO L134 CoverageAnalysis]: Checked inductivity of 2343 backedges. 1854 proven. 10 refuted. 0 times theorem prover too weak. 479 trivial. 0 not checked. [2019-09-07 23:27:48,960 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 23:27:48,960 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8] total 11 [2019-09-07 23:27:48,962 INFO L454 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-09-07 23:27:48,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-09-07 23:27:48,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2019-09-07 23:27:48,963 INFO L87 Difference]: Start difference. First operand 678631 states and 779225 transitions. Second operand 11 states. [2019-09-07 23:29:16,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:29:16,507 INFO L93 Difference]: Finished difference Result 2328051 states and 2767207 transitions. [2019-09-07 23:29:16,508 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2019-09-07 23:29:16,508 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 1395 [2019-09-07 23:29:16,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:29:35,831 INFO L225 Difference]: With dead ends: 2328051 [2019-09-07 23:29:35,832 INFO L226 Difference]: Without dead ends: 1646182 [2019-09-07 23:29:36,730 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1562 GetRequests, 1468 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3457 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1379, Invalid=7741, Unknown=0, NotChecked=0, Total=9120 [2019-09-07 23:29:37,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1646182 states. [2019-09-07 23:30:32,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1646182 to 1604416. [2019-09-07 23:30:32,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1604416 states.