/usr/bin/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 --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded/pals_floodmax.3_overflow.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 18:34:52,538 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 18:34:52,541 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 18:34:52,581 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 18:34:52,581 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 18:34:52,589 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 18:34:52,593 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 18:34:52,596 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 18:34:52,599 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 18:34:52,602 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 18:34:52,603 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 18:34:52,604 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 18:34:52,604 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 18:34:52,607 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 18:34:52,610 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 18:34:52,611 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 18:34:52,612 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 18:34:52,613 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 18:34:52,615 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 18:34:52,625 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 18:34:52,627 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 18:34:52,628 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 18:34:52,629 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 18:34:52,630 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 18:34:52,642 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 18:34:52,642 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 18:34:52,643 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 18:34:52,648 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 18:34:52,649 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 18:34:52,650 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 18:34:52,650 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 18:34:52,653 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 18:34:52,654 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 18:34:52,654 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 18:34:52,659 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 18:34:52,660 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 18:34:52,660 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 18:34:52,661 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 18:34:52,661 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 18:34:52,662 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 18:34:52,663 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 18:34:52,664 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-12 18:34:52,704 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 18:34:52,704 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 18:34:52,706 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 18:34:52,706 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 18:34:52,706 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 18:34:52,707 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 18:34:52,707 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 18:34:52,707 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 18:34:52,707 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 18:34:52,708 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 18:34:52,709 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 18:34:52,709 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 18:34:52,709 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 18:34:52,710 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 18:34:52,710 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 18:34:52,710 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 18:34:52,710 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 18:34:52,710 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 18:34:52,711 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 18:34:52,711 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 18:34:52,711 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 18:34:52,711 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 18:34:52,712 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 18:34:52,712 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 18:34:52,712 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 18:34:52,712 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 18:34:52,712 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 18:34:52,712 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 18:34:52,713 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 18:34:52,713 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 18:34:53,007 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 18:34:53,020 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 18:34:53,023 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 18:34:53,025 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 18:34:53,025 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 18:34:53,026 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_floodmax.3_overflow.ufo.UNBOUNDED.pals.c [2020-10-12 18:34:53,105 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4ecb0d479/d689cb34178c461ab0f31988ad24fe89/FLAG61e5318ac [2020-10-12 18:34:53,638 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 18:34:53,639 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded/pals_floodmax.3_overflow.ufo.UNBOUNDED.pals.c [2020-10-12 18:34:53,650 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4ecb0d479/d689cb34178c461ab0f31988ad24fe89/FLAG61e5318ac [2020-10-12 18:34:53,870 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4ecb0d479/d689cb34178c461ab0f31988ad24fe89 [2020-10-12 18:34:53,880 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 18:34:53,882 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 18:34:53,883 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 18:34:53,884 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 18:34:53,887 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 18:34:53,888 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 06:34:53" (1/1) ... [2020-10-12 18:34:53,892 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50db4eed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:34:53, skipping insertion in model container [2020-10-12 18:34:53,892 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 06:34:53" (1/1) ... [2020-10-12 18:34:53,900 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 18:34:53,945 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 18:34:54,183 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 18:34:54,201 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 18:34:54,377 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 18:34:54,395 INFO L208 MainTranslator]: Completed translation [2020-10-12 18:34:54,396 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:34:54 WrapperNode [2020-10-12 18:34:54,396 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 18:34:54,397 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 18:34:54,397 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 18:34:54,397 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 18:34:54,413 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:34:54" (1/1) ... [2020-10-12 18:34:54,415 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:34:54" (1/1) ... [2020-10-12 18:34:54,433 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:34:54" (1/1) ... [2020-10-12 18:34:54,433 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:34:54" (1/1) ... [2020-10-12 18:34:54,452 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:34:54" (1/1) ... [2020-10-12 18:34:54,474 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:34:54" (1/1) ... [2020-10-12 18:34:54,480 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:34:54" (1/1) ... [2020-10-12 18:34:54,484 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 18:34:54,485 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 18:34:54,485 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 18:34:54,485 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 18:34:54,486 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:34:54" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-12 18:34:54,545 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 18:34:54,545 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 18:34:54,545 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-12 18:34:54,545 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2020-10-12 18:34:54,546 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2020-10-12 18:34:54,546 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2020-10-12 18:34:54,546 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-10-12 18:34:54,547 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-10-12 18:34:54,547 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 18:34:54,547 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2020-10-12 18:34:54,547 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 18:34:54,548 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-12 18:34:54,548 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-12 18:34:54,548 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-12 18:34:54,548 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-12 18:34:54,549 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-12 18:34:54,549 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-12 18:34:54,549 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-12 18:34:54,549 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-12 18:34:54,549 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-12 18:34:54,550 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-12 18:34:54,550 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-12 18:34:54,551 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-12 18:34:54,551 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-12 18:34:54,553 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 18:34:54,553 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 18:34:54,553 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 18:34:55,339 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 18:34:55,339 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 18:34:55,346 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 06:34:55 BoogieIcfgContainer [2020-10-12 18:34:55,346 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 18:34:55,348 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 18:34:55,348 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 18:34:55,351 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 18:34:55,352 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 06:34:53" (1/3) ... [2020-10-12 18:34:55,353 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dda7234 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 06:34:55, skipping insertion in model container [2020-10-12 18:34:55,353 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:34:54" (2/3) ... [2020-10-12 18:34:55,354 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dda7234 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 06:34:55, skipping insertion in model container [2020-10-12 18:34:55,354 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 06:34:55" (3/3) ... [2020-10-12 18:34:55,356 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3_overflow.ufo.UNBOUNDED.pals.c [2020-10-12 18:34:55,367 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 18:34:55,376 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 18:34:55,390 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 18:34:55,414 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 18:34:55,414 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 18:34:55,414 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 18:34:55,414 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 18:34:55,415 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 18:34:55,415 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 18:34:55,415 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 18:34:55,415 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 18:34:55,437 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states. [2020-10-12 18:34:55,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-12 18:34:55,448 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:34:55,449 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:34:55,450 INFO L427 AbstractCegarLoop]: === Iteration 1 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:34:55,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:34:55,457 INFO L82 PathProgramCache]: Analyzing trace with hash 374272121, now seen corresponding path program 1 times [2020-10-12 18:34:55,466 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:34:55,467 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [318355439] [2020-10-12 18:34:55,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:34:55,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:34:55,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:56,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:34:56,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-12 18:34:56,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:34:56,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 429 [2020-10-12 18:34:56,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:34:56,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:34:56,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-12 18:34:56,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:34:56,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 18:34:56,435 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-12 18:34:56,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:34:56,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:34:56,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:56,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:34:56,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:34:56,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:34:56,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-12 18:34:56,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:34:56,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:34:56,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:34:56,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:34:56,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:34:56,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 18:34:56,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:34:56,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:56,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:34:56,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 18:34:56,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:34:56,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-12 18:34:56,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:34:56,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:34:56,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:34:56,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:34:56,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:34:56,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-12 18:34:56,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:34:56,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:56,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:34:56,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 18:34:56,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:34:56,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 18:34:56,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:34:56,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:34:56,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-12 18:34:56,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:34:56,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:34:56,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-12 18:34:56,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:34:56,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:56,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:34:56,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 18:34:56,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:34:56,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 18:34:56,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:34:56,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:34:56,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-12 18:34:56,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:34:56,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 18:34:56,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-12 18:34:56,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:34:56,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:56,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:34:56,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 18:34:56,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:34:56,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 18:34:56,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:34:56,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:34:56,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-12 18:34:56,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:34:56,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:34:56,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-12 18:34:56,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:34:56,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:56,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:34:56,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 18:34:56,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:34:56,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 18:34:56,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:34:56,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:34:56,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-12 18:34:56,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:34:56,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:34:56,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-12 18:34:56,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:34:56,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:56,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:34:56,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 18:34:56,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:34:56,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 18:34:56,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:34:56,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:34:56,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-12 18:34:56,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:34:56,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:34:56,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 18:34:56,743 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [318355439] [2020-10-12 18:34:56,746 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 18:34:56,746 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 18:34:56,747 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552930152] [2020-10-12 18:34:56,753 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 18:34:56,754 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:34:56,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 18:34:56,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-12 18:34:56,768 INFO L87 Difference]: Start difference. First operand 158 states. Second operand 6 states. [2020-10-12 18:34:57,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:34:57,728 INFO L93 Difference]: Finished difference Result 257 states and 411 transitions. [2020-10-12 18:34:57,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 18:34:57,730 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 62 [2020-10-12 18:34:57,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:34:57,744 INFO L225 Difference]: With dead ends: 257 [2020-10-12 18:34:57,745 INFO L226 Difference]: Without dead ends: 165 [2020-10-12 18:34:57,749 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-12 18:34:57,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-10-12 18:34:57,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 153. [2020-10-12 18:34:57,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-10-12 18:34:57,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 246 transitions. [2020-10-12 18:34:57,811 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 246 transitions. Word has length 62 [2020-10-12 18:34:57,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:34:57,812 INFO L479 AbstractCegarLoop]: Abstraction has 153 states and 246 transitions. [2020-10-12 18:34:57,812 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 18:34:57,812 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 246 transitions. [2020-10-12 18:34:57,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-12 18:34:57,816 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:34:57,816 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:34:57,816 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 18:34:57,817 INFO L427 AbstractCegarLoop]: === Iteration 2 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:34:57,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:34:57,817 INFO L82 PathProgramCache]: Analyzing trace with hash -469733381, now seen corresponding path program 1 times [2020-10-12 18:34:57,818 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:34:57,818 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2110676014] [2020-10-12 18:34:57,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:34:57,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:34:57,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:58,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:34:58,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-12 18:34:58,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:34:58,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 682 [2020-10-12 18:34:58,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:34:58,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 18:34:58,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-12 18:34:58,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 18:34:58,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:34:58,734 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-12 18:34:58,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:34:58,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:34:58,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:58,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:34:58,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:34:58,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:34:58,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-12 18:34:58,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:34:58,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:34:58,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:34:58,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:34:58,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:34:58,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 18:34:58,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:34:58,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:58,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:34:58,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 18:34:58,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:34:58,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-12 18:34:58,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:34:58,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:34:58,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:34:58,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 18:34:58,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:34:58,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-12 18:34:58,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:34:58,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:58,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:34:58,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 18:34:58,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:34:58,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 18:34:58,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:34:58,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:34:58,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:34:58,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 18:34:58,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:34:58,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-12 18:34:58,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:34:58,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:58,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:34:58,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 18:34:58,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:34:58,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 18:34:58,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:34:58,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:34:58,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-12 18:34:58,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:34:58,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:34:58,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-12 18:34:58,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:34:59,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:59,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:34:59,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 18:34:59,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:34:59,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 18:34:59,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:34:59,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:34:59,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-12 18:34:59,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:34:59,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:34:59,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-12 18:34:59,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:34:59,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:59,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:34:59,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 18:34:59,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:34:59,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 18:34:59,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:34:59,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:34:59,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-12 18:34:59,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:34:59,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:34:59,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-12 18:34:59,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:34:59,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:59,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:34:59,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 18:34:59,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:34:59,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 18:34:59,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:34:59,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:34:59,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-12 18:34:59,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:34:59,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:34:59,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 18:34:59,071 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2110676014] [2020-10-12 18:34:59,071 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 18:34:59,071 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-12 18:34:59,071 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357827045] [2020-10-12 18:34:59,074 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 18:34:59,074 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:34:59,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 18:34:59,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-10-12 18:34:59,075 INFO L87 Difference]: Start difference. First operand 153 states and 246 transitions. Second operand 12 states. [2020-10-12 18:34:59,566 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-12 18:34:59,758 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2020-10-12 18:35:00,041 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-10-12 18:35:00,273 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-12 18:35:01,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:35:01,792 INFO L93 Difference]: Finished difference Result 255 states and 403 transitions. [2020-10-12 18:35:01,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 18:35:01,793 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 62 [2020-10-12 18:35:01,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:35:01,797 INFO L225 Difference]: With dead ends: 255 [2020-10-12 18:35:01,797 INFO L226 Difference]: Without dead ends: 165 [2020-10-12 18:35:01,799 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2020-10-12 18:35:01,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-10-12 18:35:01,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 153. [2020-10-12 18:35:01,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-10-12 18:35:01,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 219 transitions. [2020-10-12 18:35:01,821 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 219 transitions. Word has length 62 [2020-10-12 18:35:01,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:35:01,822 INFO L479 AbstractCegarLoop]: Abstraction has 153 states and 219 transitions. [2020-10-12 18:35:01,822 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 18:35:01,822 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 219 transitions. [2020-10-12 18:35:01,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-12 18:35:01,825 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:35:01,825 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:35:01,826 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 18:35:01,826 INFO L427 AbstractCegarLoop]: === Iteration 3 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:35:01,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:35:01,826 INFO L82 PathProgramCache]: Analyzing trace with hash -1874426094, now seen corresponding path program 1 times [2020-10-12 18:35:01,827 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:35:01,827 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1785301067] [2020-10-12 18:35:01,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:35:01,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:35:01,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:35:01,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:35:02,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:35:02,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:35:06,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:35:06,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-12 18:35:06,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:35:06,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-12 18:35:06,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:35:06,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 18:35:06,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-12 18:35:06,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-12 18:35:06,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:35:07,083 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-12 18:35:07,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:35:07,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:35:07,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:35:07,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:35:07,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:35:07,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:35:07,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 18:35:07,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:35:07,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:35:07,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:35:07,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:35:07,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:35:07,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 18:35:07,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:35:07,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:35:07,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:35:07,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-12 18:35:07,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:35:07,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-12 18:35:07,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:35:07,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:35:07,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:35:07,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-12 18:35:07,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:35:07,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-12 18:35:07,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:35:07,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:35:07,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:35:07,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 18:35:07,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:35:07,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 18:35:07,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:35:07,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 18:35:07,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:35:07,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 18:35:07,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:35:07,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-12 18:35:07,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:35:07,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:35:07,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:35:07,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 18:35:07,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:35:07,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-12 18:35:07,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:35:07,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:35:07,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 18:35:07,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 18:35:07,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:35:07,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-12 18:35:07,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:35:07,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:35:07,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:35:07,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 18:35:07,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:35:07,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-12 18:35:07,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:35:07,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:35:07,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 18:35:07,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 18:35:07,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:35:07,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-12 18:35:07,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:35:07,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:35:07,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:35:07,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 18:35:07,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:35:07,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-12 18:35:07,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:35:07,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:35:07,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 18:35:07,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 18:35:07,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:35:07,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-12 18:35:07,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:35:07,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:35:07,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:35:07,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 18:35:07,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:35:07,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-12 18:35:07,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:35:07,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 18:35:07,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-12 18:35:07,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 18:35:07,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:35:07,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 18:35:07,545 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1785301067] [2020-10-12 18:35:07,546 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 18:35:07,546 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-12 18:35:07,546 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301944157] [2020-10-12 18:35:07,547 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 18:35:07,547 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:35:07,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 18:35:07,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-10-12 18:35:07,548 INFO L87 Difference]: Start difference. First operand 153 states and 219 transitions. Second operand 13 states. [2020-10-12 18:35:07,734 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-12 18:35:08,222 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2020-10-12 18:35:08,381 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-12 18:35:10,217 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-12 18:35:10,370 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-10-12 18:35:10,521 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-12 18:35:12,987 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 70 [2020-10-12 18:35:14,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:35:14,299 INFO L93 Difference]: Finished difference Result 848 states and 1315 transitions. [2020-10-12 18:35:14,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-10-12 18:35:14,300 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 88 [2020-10-12 18:35:14,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:35:14,309 INFO L225 Difference]: With dead ends: 848 [2020-10-12 18:35:14,310 INFO L226 Difference]: Without dead ends: 764 [2020-10-12 18:35:14,313 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 802 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=637, Invalid=2119, Unknown=0, NotChecked=0, Total=2756 [2020-10-12 18:35:14,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 764 states. [2020-10-12 18:35:14,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 764 to 636. [2020-10-12 18:35:14,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 636 states. [2020-10-12 18:35:14,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 636 states to 636 states and 974 transitions. [2020-10-12 18:35:14,433 INFO L78 Accepts]: Start accepts. Automaton has 636 states and 974 transitions. Word has length 88 [2020-10-12 18:35:14,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:35:14,434 INFO L479 AbstractCegarLoop]: Abstraction has 636 states and 974 transitions. [2020-10-12 18:35:14,434 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 18:35:14,434 INFO L276 IsEmpty]: Start isEmpty. Operand 636 states and 974 transitions. [2020-10-12 18:35:14,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-12 18:35:14,439 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:35:14,440 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:35:14,440 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 18:35:14,440 INFO L427 AbstractCegarLoop]: === Iteration 4 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:35:14,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:35:14,441 INFO L82 PathProgramCache]: Analyzing trace with hash -419700429, now seen corresponding path program 1 times [2020-10-12 18:35:14,441 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:35:14,441 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1874531666] [2020-10-12 18:35:14,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:35:14,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:35:14,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:35:14,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:35:14,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:35:14,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:35:16,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:35:19,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:35:19,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-12 18:35:19,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 18:35:19,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-12 18:35:19,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:35:19,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 18:35:19,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-12 18:35:19,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-12 18:35:19,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:35:19,666 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-12 18:35:19,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:35:19,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:35:19,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:35:19,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:35:19,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:35:19,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:35:19,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 18:35:19,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:35:19,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:35:19,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:35:19,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:35:19,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:35:19,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 18:35:19,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:35:19,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:35:19,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:35:19,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-12 18:35:19,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:35:19,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-12 18:35:19,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:35:19,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:35:19,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:35:19,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-12 18:35:19,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:35:19,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-12 18:35:19,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:35:19,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:35:19,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:35:19,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 18:35:19,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:35:19,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 18:35:19,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:35:19,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 18:35:19,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:35:19,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 18:35:19,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:35:19,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-12 18:35:19,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:35:19,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:35:19,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:35:19,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 18:35:19,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:35:19,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 18:35:19,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:35:19,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:35:19,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 18:35:19,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 18:35:19,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:35:19,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-12 18:35:19,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:35:19,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:35:19,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:35:19,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 18:35:19,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:35:19,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-12 18:35:19,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:35:19,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:35:19,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 18:35:19,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 18:35:19,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:35:20,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-12 18:35:20,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:35:20,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:35:20,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:35:20,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 18:35:20,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:35:20,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-12 18:35:20,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:35:20,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:35:20,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 18:35:20,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 18:35:20,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:35:20,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-12 18:35:20,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:35:20,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:35:20,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:35:20,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 18:35:20,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:35:20,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 18:35:20,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:35:20,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 18:35:20,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-12 18:35:20,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 18:35:20,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:35:20,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 18:35:20,112 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1874531666] [2020-10-12 18:35:20,112 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 18:35:20,112 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-12 18:35:20,113 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59228680] [2020-10-12 18:35:20,115 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-12 18:35:20,115 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:35:20,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-12 18:35:20,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2020-10-12 18:35:20,116 INFO L87 Difference]: Start difference. First operand 636 states and 974 transitions. Second operand 14 states. [2020-10-12 18:35:20,300 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2020-10-12 18:35:20,728 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2020-10-12 18:35:20,867 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-12 18:35:21,027 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-12 18:35:22,614 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-10-12 18:35:22,780 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-12 18:35:22,951 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2020-10-12 18:35:23,131 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2020-10-12 18:35:24,198 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 73 [2020-10-12 18:35:26,171 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-10-12 18:35:26,394 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-12 18:35:29,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:35:29,932 INFO L93 Difference]: Finished difference Result 3458 states and 5507 transitions. [2020-10-12 18:35:29,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-10-12 18:35:29,934 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 89 [2020-10-12 18:35:29,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:35:29,956 INFO L225 Difference]: With dead ends: 3458 [2020-10-12 18:35:29,956 INFO L226 Difference]: Without dead ends: 2891 [2020-10-12 18:35:29,964 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1792 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=1076, Invalid=4180, Unknown=0, NotChecked=0, Total=5256 [2020-10-12 18:35:29,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2891 states. [2020-10-12 18:35:30,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2891 to 1594. [2020-10-12 18:35:30,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1594 states. [2020-10-12 18:35:30,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1594 states to 1594 states and 2484 transitions. [2020-10-12 18:35:30,142 INFO L78 Accepts]: Start accepts. Automaton has 1594 states and 2484 transitions. Word has length 89 [2020-10-12 18:35:30,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:35:30,143 INFO L479 AbstractCegarLoop]: Abstraction has 1594 states and 2484 transitions. [2020-10-12 18:35:30,143 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-12 18:35:30,143 INFO L276 IsEmpty]: Start isEmpty. Operand 1594 states and 2484 transitions. [2020-10-12 18:35:30,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-12 18:35:30,146 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:35:30,147 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:35:30,147 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 18:35:30,147 INFO L427 AbstractCegarLoop]: === Iteration 5 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:35:30,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:35:30,148 INFO L82 PathProgramCache]: Analyzing trace with hash 1675437289, now seen corresponding path program 1 times [2020-10-12 18:35:30,148 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:35:30,148 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [883804329] [2020-10-12 18:35:30,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:35:30,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:35:30,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:35:30,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:35:30,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:35:30,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:35:32,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:35:35,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:35:35,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-12 18:35:35,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 18:35:35,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-12 18:35:35,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:35:35,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 18:35:35,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-12 18:35:35,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-12 18:35:35,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:35:35,427 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-12 18:35:35,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:35:35,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:35:35,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:35:35,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:35:35,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:35:35,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:35:35,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 18:35:35,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:35:35,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:35:35,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:35:35,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:35:35,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:35:35,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 18:35:35,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:35:35,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:35:35,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:35:35,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-12 18:35:35,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:35:35,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-12 18:35:35,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:35:35,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:35:35,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:35:35,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-12 18:35:35,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:35:35,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-12 18:35:35,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:35:35,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:35:35,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:35:35,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 18:35:35,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:35:35,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 18:35:35,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:35:35,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 18:35:35,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:35:35,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 18:35:35,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:35:35,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-12 18:35:35,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:35:35,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:35:35,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:35:35,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 18:35:35,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:35:35,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 18:35:35,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:35:35,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:35:35,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 18:35:35,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 18:35:35,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:35:35,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-12 18:35:35,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:35:35,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:35:35,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:35:35,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 18:35:35,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:35:35,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 18:35:35,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:35:35,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:35:35,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 18:35:35,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 18:35:35,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:35:35,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-12 18:35:35,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:35:35,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:35:35,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:35:35,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 18:35:35,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:35:35,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 18:35:35,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:35:35,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:35:35,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 18:35:35,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 18:35:35,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:35:35,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-12 18:35:35,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:35:35,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:35:35,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:35:35,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 18:35:35,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:35:35,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 18:35:35,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:35:35,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 18:35:35,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-12 18:35:35,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 18:35:35,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:35:35,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 18:35:35,790 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [883804329] [2020-10-12 18:35:35,790 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 18:35:35,790 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-12 18:35:35,790 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065203285] [2020-10-12 18:35:35,791 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-12 18:35:35,791 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:35:35,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-12 18:35:35,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2020-10-12 18:35:35,792 INFO L87 Difference]: Start difference. First operand 1594 states and 2484 transitions. Second operand 15 states. [2020-10-12 18:35:35,988 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2020-10-12 18:35:36,489 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2020-10-12 18:35:36,648 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-12 18:35:36,807 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-12 18:35:38,098 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-12 18:35:39,183 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-10-12 18:35:39,360 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2020-10-12 18:35:39,511 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-12 18:35:39,733 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2020-10-12 18:35:39,906 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-10-12 18:35:42,671 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 73 [2020-10-12 18:35:44,828 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-10-12 18:35:45,058 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-12 18:35:47,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:35:47,864 INFO L93 Difference]: Finished difference Result 4933 states and 7853 transitions. [2020-10-12 18:35:47,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2020-10-12 18:35:47,865 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 90 [2020-10-12 18:35:47,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:35:47,885 INFO L225 Difference]: With dead ends: 4933 [2020-10-12 18:35:47,886 INFO L226 Difference]: Without dead ends: 3431 [2020-10-12 18:35:47,893 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2452 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=1305, Invalid=5667, Unknown=0, NotChecked=0, Total=6972 [2020-10-12 18:35:47,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3431 states. [2020-10-12 18:35:48,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3431 to 2354. [2020-10-12 18:35:48,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2354 states. [2020-10-12 18:35:48,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2354 states to 2354 states and 3690 transitions. [2020-10-12 18:35:48,081 INFO L78 Accepts]: Start accepts. Automaton has 2354 states and 3690 transitions. Word has length 90 [2020-10-12 18:35:48,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:35:48,082 INFO L479 AbstractCegarLoop]: Abstraction has 2354 states and 3690 transitions. [2020-10-12 18:35:48,082 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-12 18:35:48,082 INFO L276 IsEmpty]: Start isEmpty. Operand 2354 states and 3690 transitions. [2020-10-12 18:35:48,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-12 18:35:48,085 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:35:48,085 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:35:48,085 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 18:35:48,085 INFO L427 AbstractCegarLoop]: === Iteration 6 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:35:48,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:35:48,086 INFO L82 PathProgramCache]: Analyzing trace with hash -2146455126, now seen corresponding path program 1 times [2020-10-12 18:35:48,086 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:35:48,087 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1203111923] [2020-10-12 18:35:48,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:35:48,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:35:48,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:35:48,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:35:48,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:35:48,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:35:48,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:35:53,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:35:53,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-12 18:35:53,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 18:35:53,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-12 18:35:53,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:35:53,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 18:35:53,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-12 18:35:53,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-12 18:35:53,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:35:53,327 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-12 18:35:53,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:35:53,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:35:53,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:35:53,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:35:53,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:35:53,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:35:53,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 18:35:53,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:35:53,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:35:53,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:35:53,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:35:53,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:35:53,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 18:35:53,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:35:53,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:35:53,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:35:53,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-12 18:35:53,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:35:53,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-12 18:35:53,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:35:53,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:35:53,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:35:53,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-12 18:35:53,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:35:53,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-12 18:35:53,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:35:53,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:35:53,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:35:53,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 18:35:53,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:35:53,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:35:53,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:35:53,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 18:35:53,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:35:53,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 18:35:53,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:35:53,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-12 18:35:53,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:35:53,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:35:53,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:35:53,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 18:35:53,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:35:53,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 18:35:53,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:35:53,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:35:53,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 18:35:53,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 18:35:53,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:35:53,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-12 18:35:53,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:35:53,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:35:53,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:35:53,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 18:35:53,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:35:53,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 18:35:53,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:35:53,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:35:53,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 18:35:53,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 18:35:53,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:35:53,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-12 18:35:53,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:35:53,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:35:53,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:35:53,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 18:35:53,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:35:53,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 18:35:53,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:35:53,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:35:53,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 18:35:53,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 18:35:53,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:35:53,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-12 18:35:53,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:35:53,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:35:53,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:35:53,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-12 18:35:53,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:35:53,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 18:35:53,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:35:53,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 18:35:53,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-12 18:35:53,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 18:35:53,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:35:53,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 18:35:53,661 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1203111923] [2020-10-12 18:35:53,666 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 18:35:53,666 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-12 18:35:53,666 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389781474] [2020-10-12 18:35:53,667 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-12 18:35:53,667 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:35:53,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-12 18:35:53,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2020-10-12 18:35:53,668 INFO L87 Difference]: Start difference. First operand 2354 states and 3690 transitions. Second operand 14 states. [2020-10-12 18:35:53,868 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2020-10-12 18:35:54,364 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2020-10-12 18:35:54,518 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-12 18:35:54,685 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-10-12 18:35:56,374 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2020-10-12 18:35:56,528 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-10-12 18:35:56,781 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-12 18:35:56,963 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2020-10-12 18:36:00,977 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2020-10-12 18:36:01,141 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-10-12 18:36:02,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:36:02,317 INFO L93 Difference]: Finished difference Result 9305 states and 14622 transitions. [2020-10-12 18:36:02,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2020-10-12 18:36:02,318 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 91 [2020-10-12 18:36:02,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:36:02,356 INFO L225 Difference]: With dead ends: 9305 [2020-10-12 18:36:02,356 INFO L226 Difference]: Without dead ends: 7087 [2020-10-12 18:36:02,365 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1446 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=957, Invalid=3735, Unknown=0, NotChecked=0, Total=4692 [2020-10-12 18:36:02,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7087 states. [2020-10-12 18:36:02,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7087 to 5564. [2020-10-12 18:36:02,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5564 states. [2020-10-12 18:36:02,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5564 states to 5564 states and 8834 transitions. [2020-10-12 18:36:02,845 INFO L78 Accepts]: Start accepts. Automaton has 5564 states and 8834 transitions. Word has length 91 [2020-10-12 18:36:02,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:36:02,846 INFO L479 AbstractCegarLoop]: Abstraction has 5564 states and 8834 transitions. [2020-10-12 18:36:02,846 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-12 18:36:02,847 INFO L276 IsEmpty]: Start isEmpty. Operand 5564 states and 8834 transitions. [2020-10-12 18:36:02,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-12 18:36:02,850 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:36:02,850 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:36:02,850 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 18:36:02,850 INFO L427 AbstractCegarLoop]: === Iteration 7 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:36:02,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:36:02,851 INFO L82 PathProgramCache]: Analyzing trace with hash -1163806664, now seen corresponding path program 1 times [2020-10-12 18:36:02,851 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:36:02,851 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [911090981] [2020-10-12 18:36:02,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:36:02,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:36:02,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:36:02,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:36:03,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:36:03,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:36:03,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:36:03,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:36:07,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:36:07,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-12 18:36:07,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 18:36:07,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-12 18:36:07,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:36:07,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 18:36:07,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-12 18:36:07,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-12 18:36:07,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:36:08,095 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-12 18:36:08,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:36:08,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:36:08,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:36:08,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:36:08,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:36:08,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:36:08,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 18:36:08,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:36:08,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:36:08,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:36:08,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:36:08,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:36:08,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 18:36:08,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:36:08,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:36:08,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:36:08,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-12 18:36:08,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:36:08,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-12 18:36:08,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:36:08,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 18:36:08,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:36:08,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-12 18:36:08,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:36:08,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-12 18:36:08,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:36:08,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:36:08,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:36:08,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 18:36:08,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:36:08,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 18:36:08,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:36:08,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 18:36:08,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:36:08,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 18:36:08,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:36:08,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-12 18:36:08,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:36:08,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:36:08,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:36:08,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 18:36:08,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:36:08,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 18:36:08,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:36:08,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:36:08,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 18:36:08,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 18:36:08,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:36:08,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-12 18:36:08,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:36:08,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:36:08,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:36:08,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 18:36:08,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:36:08,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 18:36:08,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:36:08,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:36:08,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 18:36:08,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 18:36:08,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:36:08,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-12 18:36:08,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:36:08,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:36:08,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:36:08,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-12 18:36:08,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:36:08,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 18:36:08,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:36:08,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 18:36:08,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:36:08,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 18:36:08,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:36:08,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-12 18:36:08,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:36:08,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:36:08,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:36:08,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 18:36:08,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:36:08,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 18:36:08,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:36:08,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 18:36:08,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-12 18:36:08,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 18:36:08,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:36:08,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 18:36:08,508 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [911090981] [2020-10-12 18:36:08,508 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 18:36:08,508 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-12 18:36:08,509 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019648036] [2020-10-12 18:36:08,509 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 18:36:08,509 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:36:08,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 18:36:08,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2020-10-12 18:36:08,510 INFO L87 Difference]: Start difference. First operand 5564 states and 8834 transitions. Second operand 13 states. [2020-10-12 18:36:08,827 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 150 [2020-10-12 18:36:09,343 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2020-10-12 18:36:09,506 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-12 18:36:09,711 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 69 [2020-10-12 18:36:10,013 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 69 [2020-10-12 18:36:10,221 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2020-10-12 18:36:10,959 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-12 18:36:11,581 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-12 18:36:11,751 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-10-12 18:36:12,045 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2020-10-12 18:36:15,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:36:15,244 INFO L93 Difference]: Finished difference Result 8105 states and 12788 transitions. [2020-10-12 18:36:15,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-12 18:36:15,245 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 91 [2020-10-12 18:36:15,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:36:15,289 INFO L225 Difference]: With dead ends: 8105 [2020-10-12 18:36:15,290 INFO L226 Difference]: Without dead ends: 6256 [2020-10-12 18:36:15,304 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 507 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=459, Invalid=1611, Unknown=0, NotChecked=0, Total=2070 [2020-10-12 18:36:15,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6256 states. [2020-10-12 18:36:15,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6256 to 5408. [2020-10-12 18:36:15,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5408 states. [2020-10-12 18:36:15,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5408 states to 5408 states and 8588 transitions. [2020-10-12 18:36:15,937 INFO L78 Accepts]: Start accepts. Automaton has 5408 states and 8588 transitions. Word has length 91 [2020-10-12 18:36:15,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:36:15,938 INFO L479 AbstractCegarLoop]: Abstraction has 5408 states and 8588 transitions. [2020-10-12 18:36:15,938 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 18:36:15,938 INFO L276 IsEmpty]: Start isEmpty. Operand 5408 states and 8588 transitions. [2020-10-12 18:36:15,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-12 18:36:15,943 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:36:15,943 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:36:15,943 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 18:36:15,944 INFO L427 AbstractCegarLoop]: === Iteration 8 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:36:15,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:36:15,946 INFO L82 PathProgramCache]: Analyzing trace with hash 1434056652, now seen corresponding path program 1 times [2020-10-12 18:36:15,946 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:36:15,946 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [404230368] [2020-10-12 18:36:15,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:36:15,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:36:16,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:36:16,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:36:16,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:36:16,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:36:16,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:36:18,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:36:18,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:36:20,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:36:20,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-12 18:36:20,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 18:36:20,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-12 18:36:20,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:36:20,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 18:36:20,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-12 18:36:20,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-12 18:36:20,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:36:21,162 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-12 18:36:21,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:36:21,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:36:21,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:36:21,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:36:21,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:36:21,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:36:21,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 18:36:21,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:36:21,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:36:21,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:36:21,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:36:21,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:36:21,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 18:36:21,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:36:21,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:36:21,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:36:21,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-12 18:36:21,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:36:21,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-12 18:36:21,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:36:21,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 18:36:21,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:36:21,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-12 18:36:21,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:36:21,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-12 18:36:21,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:36:21,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:36:21,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:36:21,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 18:36:21,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:36:21,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 18:36:21,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:36:21,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 18:36:21,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:36:21,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 18:36:21,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:36:21,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-12 18:36:21,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:36:21,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:36:21,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:36:21,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-12 18:36:21,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:36:21,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 18:36:21,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:36:21,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 18:36:21,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:36:21,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 18:36:21,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:36:21,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-12 18:36:21,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:36:21,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:36:21,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:36:21,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 18:36:21,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:36:21,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 18:36:21,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:36:21,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:36:21,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 18:36:21,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 18:36:21,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:36:21,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-12 18:36:21,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:36:21,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:36:21,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:36:21,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 18:36:21,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:36:21,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 18:36:21,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:36:21,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:36:21,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 18:36:21,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 18:36:21,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:36:21,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-12 18:36:21,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:36:21,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:36:21,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:36:21,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 18:36:21,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:36:21,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 18:36:21,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:36:21,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 18:36:21,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-12 18:36:21,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 18:36:21,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:36:21,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 18:36:21,565 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [404230368] [2020-10-12 18:36:21,565 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 18:36:21,565 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-12 18:36:21,566 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232038283] [2020-10-12 18:36:21,566 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 18:36:21,566 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:36:21,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 18:36:21,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2020-10-12 18:36:21,567 INFO L87 Difference]: Start difference. First operand 5408 states and 8588 transitions. Second operand 13 states. [2020-10-12 18:36:21,924 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 151 [2020-10-12 18:36:22,399 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2020-10-12 18:36:22,553 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-12 18:36:22,776 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 68 [2020-10-12 18:36:23,942 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-12 18:36:24,097 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-12 18:36:24,333 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-12 18:36:24,492 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-12 18:36:28,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:36:28,058 INFO L93 Difference]: Finished difference Result 11214 states and 17764 transitions. [2020-10-12 18:36:28,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-10-12 18:36:28,059 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 91 [2020-10-12 18:36:28,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:36:28,104 INFO L225 Difference]: With dead ends: 11214 [2020-10-12 18:36:28,105 INFO L226 Difference]: Without dead ends: 8026 [2020-10-12 18:36:28,128 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 695 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=549, Invalid=2001, Unknown=0, NotChecked=0, Total=2550 [2020-10-12 18:36:28,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8026 states. [2020-10-12 18:36:28,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8026 to 6908. [2020-10-12 18:36:28,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6908 states. [2020-10-12 18:36:28,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6908 states to 6908 states and 10997 transitions. [2020-10-12 18:36:28,698 INFO L78 Accepts]: Start accepts. Automaton has 6908 states and 10997 transitions. Word has length 91 [2020-10-12 18:36:28,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:36:28,699 INFO L479 AbstractCegarLoop]: Abstraction has 6908 states and 10997 transitions. [2020-10-12 18:36:28,699 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 18:36:28,699 INFO L276 IsEmpty]: Start isEmpty. Operand 6908 states and 10997 transitions. [2020-10-12 18:36:28,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-12 18:36:28,703 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:36:28,703 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:36:28,703 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 18:36:28,703 INFO L427 AbstractCegarLoop]: === Iteration 9 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:36:28,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:36:28,704 INFO L82 PathProgramCache]: Analyzing trace with hash 134665421, now seen corresponding path program 1 times [2020-10-12 18:36:28,704 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:36:28,705 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1858683609] [2020-10-12 18:36:28,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:36:28,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:36:28,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:36:28,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:36:28,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:36:28,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:36:29,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:36:29,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:36:32,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:36:32,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:36:33,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:36:33,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-12 18:36:33,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-12 18:36:33,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-12 18:36:33,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:36:33,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 18:36:33,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-12 18:36:33,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-12 18:36:33,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:36:33,910 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-12 18:36:33,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:36:33,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:36:33,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:36:33,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:36:33,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:36:33,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:36:33,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 18:36:33,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:36:33,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:36:33,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:36:33,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:36:33,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:36:33,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 18:36:33,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:36:33,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:36:33,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:36:33,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-12 18:36:33,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:36:33,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-12 18:36:33,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:36:33,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 18:36:33,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:36:33,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-12 18:36:33,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:36:33,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-12 18:36:33,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:36:33,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:36:33,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:36:33,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 18:36:33,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:36:33,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:36:33,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:36:33,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 18:36:33,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:36:33,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 18:36:33,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:36:33,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-12 18:36:33,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:36:33,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:36:34,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:36:34,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 18:36:34,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:36:34,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 18:36:34,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:36:34,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:36:34,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 18:36:34,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 18:36:34,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:36:34,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-12 18:36:34,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:36:34,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:36:34,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:36:34,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 18:36:34,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:36:34,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 18:36:34,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:36:34,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:36:34,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 18:36:34,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 18:36:34,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:36:34,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-12 18:36:34,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:36:34,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:36:34,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:36:34,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-12 18:36:34,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:36:34,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 18:36:34,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:36:34,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 18:36:34,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:36:34,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 18:36:34,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:36:34,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-12 18:36:34,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:36:34,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:36:34,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:36:34,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 18:36:34,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:36:34,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 18:36:34,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:36:34,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 18:36:34,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-12 18:36:34,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 18:36:34,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:36:34,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 18:36:34,191 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1858683609] [2020-10-12 18:36:34,192 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 18:36:34,192 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-12 18:36:34,192 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139967969] [2020-10-12 18:36:34,193 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-12 18:36:34,193 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:36:34,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-12 18:36:34,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2020-10-12 18:36:34,193 INFO L87 Difference]: Start difference. First operand 6908 states and 10997 transitions. Second operand 14 states. [2020-10-12 18:36:34,430 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-12 18:36:34,980 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2020-10-12 18:36:35,146 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-12 18:36:37,046 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 150 [2020-10-12 18:36:37,438 WARN L193 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 152 [2020-10-12 18:36:37,607 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-10-12 18:36:37,801 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2020-10-12 18:36:37,968 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-12 18:36:38,251 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-12 18:36:38,512 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2020-10-12 18:36:39,473 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 70 [2020-10-12 18:36:39,991 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 73 [2020-10-12 18:36:41,230 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2020-10-12 18:36:41,450 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 70 [2020-10-12 18:36:41,813 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-10-12 18:36:43,049 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-12 18:36:46,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:36:46,313 INFO L93 Difference]: Finished difference Result 17400 states and 27622 transitions. [2020-10-12 18:36:46,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2020-10-12 18:36:46,314 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 92 [2020-10-12 18:36:46,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:36:46,371 INFO L225 Difference]: With dead ends: 17400 [2020-10-12 18:36:46,371 INFO L226 Difference]: Without dead ends: 15063 [2020-10-12 18:36:46,388 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2114 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=1116, Invalid=5204, Unknown=0, NotChecked=0, Total=6320 [2020-10-12 18:36:46,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15063 states. [2020-10-12 18:36:47,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15063 to 11806. [2020-10-12 18:36:47,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11806 states. [2020-10-12 18:36:47,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11806 states to 11806 states and 18826 transitions. [2020-10-12 18:36:47,285 INFO L78 Accepts]: Start accepts. Automaton has 11806 states and 18826 transitions. Word has length 92 [2020-10-12 18:36:47,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:36:47,285 INFO L479 AbstractCegarLoop]: Abstraction has 11806 states and 18826 transitions. [2020-10-12 18:36:47,286 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-12 18:36:47,286 INFO L276 IsEmpty]: Start isEmpty. Operand 11806 states and 18826 transitions. [2020-10-12 18:36:47,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-12 18:36:47,290 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:36:47,290 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:36:47,290 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 18:36:47,290 INFO L427 AbstractCegarLoop]: === Iteration 10 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:36:47,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:36:47,291 INFO L82 PathProgramCache]: Analyzing trace with hash 450252987, now seen corresponding path program 1 times [2020-10-12 18:36:47,291 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:36:47,291 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1934670618] [2020-10-12 18:36:47,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:36:47,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:36:47,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:36:47,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:36:47,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:36:47,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:36:47,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:36:47,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:36:49,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:36:49,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:36:52,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:36:52,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-12 18:36:52,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-12 18:36:52,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-12 18:36:52,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:36:52,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 18:36:52,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-12 18:36:52,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-12 18:36:52,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:36:52,531 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-12 18:36:52,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:36:52,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:36:52,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:36:52,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:36:52,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:36:52,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:36:52,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 18:36:52,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:36:52,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:36:52,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:36:52,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:36:52,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:36:52,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 18:36:52,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:36:52,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:36:52,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:36:52,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-12 18:36:52,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:36:52,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-12 18:36:52,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:36:52,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 18:36:52,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:36:52,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-12 18:36:52,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:36:52,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-12 18:36:52,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:36:52,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:36:52,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:36:52,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 18:36:52,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:36:52,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 18:36:52,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:36:52,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 18:36:52,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:36:52,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 18:36:52,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:36:52,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-12 18:36:52,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:36:52,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:36:52,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:36:52,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-12 18:36:52,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:36:52,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-12 18:36:52,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:36:52,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 18:36:52,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 18:36:52,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-12 18:36:52,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:36:52,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-12 18:36:52,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:36:52,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:36:52,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:36:52,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 18:36:52,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:36:52,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 18:36:52,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:36:52,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:36:52,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-12 18:36:52,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:36:52,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:36:52,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-12 18:36:52,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:36:52,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:36:52,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:36:52,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 18:36:52,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:36:52,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 18:36:52,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:36:52,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:36:52,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-12 18:36:52,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:36:52,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:36:52,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-12 18:36:52,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:36:52,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:36:52,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:36:52,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 18:36:52,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:36:52,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:36:52,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:36:52,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:36:52,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-12 18:36:52,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:36:52,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:36:52,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 18:36:52,822 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1934670618] [2020-10-12 18:36:52,822 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 18:36:52,822 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-12 18:36:52,822 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303068748] [2020-10-12 18:36:52,823 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 18:36:52,823 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:36:52,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 18:36:52,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-12 18:36:52,823 INFO L87 Difference]: Start difference. First operand 11806 states and 18826 transitions. Second operand 9 states. [2020-10-12 18:36:53,007 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-12 18:36:55,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:36:55,570 INFO L93 Difference]: Finished difference Result 26619 states and 42142 transitions. [2020-10-12 18:36:55,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 18:36:55,570 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 92 [2020-10-12 18:36:55,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:36:55,625 INFO L225 Difference]: With dead ends: 26619 [2020-10-12 18:36:55,625 INFO L226 Difference]: Without dead ends: 14898 [2020-10-12 18:36:55,659 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=78, Invalid=228, Unknown=0, NotChecked=0, Total=306 [2020-10-12 18:36:55,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14898 states. [2020-10-12 18:36:56,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14898 to 12804. [2020-10-12 18:36:56,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12804 states. [2020-10-12 18:36:56,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12804 states to 12804 states and 20295 transitions. [2020-10-12 18:36:56,882 INFO L78 Accepts]: Start accepts. Automaton has 12804 states and 20295 transitions. Word has length 92 [2020-10-12 18:36:56,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:36:56,883 INFO L479 AbstractCegarLoop]: Abstraction has 12804 states and 20295 transitions. [2020-10-12 18:36:56,883 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 18:36:56,883 INFO L276 IsEmpty]: Start isEmpty. Operand 12804 states and 20295 transitions. [2020-10-12 18:36:56,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-12 18:36:56,887 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:36:56,887 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:36:56,888 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 18:36:56,888 INFO L427 AbstractCegarLoop]: === Iteration 11 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:36:56,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:36:56,888 INFO L82 PathProgramCache]: Analyzing trace with hash -2084944461, now seen corresponding path program 1 times [2020-10-12 18:36:56,888 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:36:56,889 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1067869623] [2020-10-12 18:36:56,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:36:56,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:36:56,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:36:56,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:36:57,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:36:57,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:36:59,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:37:01,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:37:01,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-12 18:37:01,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 18:37:01,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-12 18:37:01,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:37:01,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 18:37:01,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-12 18:37:01,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-12 18:37:01,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:37:02,100 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-12 18:37:02,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:37:02,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:37:02,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:37:02,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:37:02,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:37:02,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:37:02,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 18:37:02,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:37:02,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:37:02,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:37:02,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:37:02,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:37:02,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 18:37:02,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:37:02,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:37:02,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:37:02,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-12 18:37:02,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:37:02,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-12 18:37:02,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:37:02,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:37:02,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:37:02,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-12 18:37:02,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:37:02,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-12 18:37:02,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:37:02,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:37:02,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:37:02,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 18:37:02,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:37:02,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 18:37:02,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:37:02,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 18:37:02,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:37:02,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 18:37:02,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:37:02,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-12 18:37:02,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:37:02,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:37:02,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:37:02,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 18:37:02,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:37:02,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 18:37:02,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:37:02,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:37:02,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 18:37:02,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 18:37:02,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:37:02,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-12 18:37:02,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:37:02,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:37:02,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:37:02,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 18:37:02,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:37:02,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 18:37:02,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:37:02,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:37:02,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 18:37:02,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 18:37:02,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:37:02,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-12 18:37:02,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:37:02,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:37:02,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:37:02,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 18:37:02,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:37:02,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 18:37:02,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:37:02,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:37:02,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 18:37:02,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 18:37:02,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:37:02,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-12 18:37:02,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:37:02,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:37:02,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:37:02,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-12 18:37:02,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:37:02,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 18:37:02,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:37:02,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 18:37:02,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-12 18:37:02,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 18:37:02,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:37:02,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 18:37:02,433 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1067869623] [2020-10-12 18:37:02,433 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 18:37:02,433 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-12 18:37:02,433 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975674774] [2020-10-12 18:37:02,434 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 18:37:02,434 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:37:02,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 18:37:02,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2020-10-12 18:37:02,434 INFO L87 Difference]: Start difference. First operand 12804 states and 20295 transitions. Second operand 13 states. [2020-10-12 18:37:02,653 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2020-10-12 18:37:03,158 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2020-10-12 18:37:03,335 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-12 18:37:04,251 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2020-10-12 18:37:05,019 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2020-10-12 18:37:05,532 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-10-12 18:37:06,791 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2020-10-12 18:37:10,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:37:10,547 INFO L93 Difference]: Finished difference Result 38459 states and 61173 transitions. [2020-10-12 18:37:10,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-10-12 18:37:10,547 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 95 [2020-10-12 18:37:10,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:37:10,625 INFO L225 Difference]: With dead ends: 38459 [2020-10-12 18:37:10,625 INFO L226 Difference]: Without dead ends: 25877 [2020-10-12 18:37:10,671 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 816 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=598, Invalid=2054, Unknown=0, NotChecked=0, Total=2652 [2020-10-12 18:37:10,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25877 states. [2020-10-12 18:37:12,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25877 to 22451. [2020-10-12 18:37:12,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22451 states. [2020-10-12 18:37:12,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22451 states to 22451 states and 35841 transitions. [2020-10-12 18:37:12,325 INFO L78 Accepts]: Start accepts. Automaton has 22451 states and 35841 transitions. Word has length 95 [2020-10-12 18:37:12,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:37:12,325 INFO L479 AbstractCegarLoop]: Abstraction has 22451 states and 35841 transitions. [2020-10-12 18:37:12,325 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 18:37:12,325 INFO L276 IsEmpty]: Start isEmpty. Operand 22451 states and 35841 transitions. [2020-10-12 18:37:12,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-12 18:37:12,327 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:37:12,328 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:37:12,328 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 18:37:12,328 INFO L427 AbstractCegarLoop]: === Iteration 12 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:37:12,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:37:12,328 INFO L82 PathProgramCache]: Analyzing trace with hash -465367840, now seen corresponding path program 1 times [2020-10-12 18:37:12,328 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:37:12,329 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1268036803] [2020-10-12 18:37:12,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:37:12,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:37:12,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:37:12,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:37:12,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:37:12,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:37:12,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:37:12,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:37:12,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:37:12,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:37:17,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:37:17,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-12 18:37:17,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-12 18:37:17,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-12 18:37:17,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:37:17,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 18:37:17,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-12 18:37:17,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-12 18:37:17,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:37:17,529 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-12 18:37:17,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:37:17,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:37:17,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:37:17,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:37:17,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:37:17,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:37:17,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 18:37:17,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:37:17,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:37:17,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:37:17,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:37:17,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:37:17,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 18:37:17,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:37:17,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:37:17,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:37:17,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-12 18:37:17,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:37:17,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 18:37:17,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:37:17,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 18:37:17,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:37:17,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-12 18:37:17,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:37:17,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-12 18:37:17,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:37:17,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:37:17,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:37:17,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 18:37:17,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:37:17,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:37:17,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:37:17,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 18:37:17,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:37:17,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 18:37:17,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:37:17,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-12 18:37:17,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:37:17,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:37:17,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:37:17,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 18:37:17,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:37:17,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 18:37:17,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:37:17,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 18:37:17,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:37:17,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-12 18:37:17,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:37:17,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-12 18:37:17,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:37:17,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:37:17,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:37:17,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 18:37:17,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:37:17,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 18:37:17,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:37:17,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 18:37:17,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:37:17,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 18:37:17,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:37:17,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-12 18:37:17,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:37:17,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:37:17,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:37:17,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-12 18:37:17,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:37:17,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 18:37:17,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:37:17,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 18:37:17,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 18:37:17,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-12 18:37:17,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:37:17,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-12 18:37:17,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:37:17,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:37:17,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:37:17,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 18:37:17,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:37:17,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 18:37:17,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:37:17,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:37:17,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-12 18:37:17,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:37:17,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:37:17,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 18:37:17,728 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1268036803] [2020-10-12 18:37:17,729 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 18:37:17,729 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-12 18:37:17,729 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481758704] [2020-10-12 18:37:17,729 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 18:37:17,729 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:37:17,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 18:37:17,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-12 18:37:17,730 INFO L87 Difference]: Start difference. First operand 22451 states and 35841 transitions. Second operand 9 states. [2020-10-12 18:37:17,923 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-12 18:37:21,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:37:21,464 INFO L93 Difference]: Finished difference Result 60639 states and 96102 transitions. [2020-10-12 18:37:21,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 18:37:21,465 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 95 [2020-10-12 18:37:21,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:37:21,566 INFO L225 Difference]: With dead ends: 60639 [2020-10-12 18:37:21,566 INFO L226 Difference]: Without dead ends: 38382 [2020-10-12 18:37:21,627 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=78, Invalid=228, Unknown=0, NotChecked=0, Total=306 [2020-10-12 18:37:21,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38382 states. [2020-10-12 18:37:24,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38382 to 32923. [2020-10-12 18:37:24,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32923 states. [2020-10-12 18:37:24,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32923 states to 32923 states and 52016 transitions. [2020-10-12 18:37:24,844 INFO L78 Accepts]: Start accepts. Automaton has 32923 states and 52016 transitions. Word has length 95 [2020-10-12 18:37:24,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:37:24,844 INFO L479 AbstractCegarLoop]: Abstraction has 32923 states and 52016 transitions. [2020-10-12 18:37:24,844 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 18:37:24,845 INFO L276 IsEmpty]: Start isEmpty. Operand 32923 states and 52016 transitions. [2020-10-12 18:37:24,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-12 18:37:24,847 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:37:24,847 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:37:24,848 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 18:37:24,848 INFO L427 AbstractCegarLoop]: === Iteration 13 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:37:24,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:37:24,848 INFO L82 PathProgramCache]: Analyzing trace with hash -328767624, now seen corresponding path program 1 times [2020-10-12 18:37:24,848 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:37:24,848 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1076913681] [2020-10-12 18:37:24,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:37:24,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:37:24,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:37:24,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:37:24,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:37:24,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:37:25,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:37:25,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:37:25,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:37:25,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:37:25,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:37:29,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:37:29,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-12 18:37:29,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-12 18:37:29,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-12 18:37:29,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:37:29,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 18:37:29,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-12 18:37:29,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-12 18:37:29,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:37:30,050 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-12 18:37:30,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:37:30,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:37:30,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:37:30,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:37:30,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:37:30,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:37:30,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 18:37:30,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:37:30,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:37:30,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:37:30,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:37:30,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:37:30,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 18:37:30,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:37:30,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:37:30,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:37:30,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-12 18:37:30,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:37:30,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-12 18:37:30,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:37:30,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 18:37:30,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:37:30,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 18:37:30,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:37:30,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-12 18:37:30,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:37:30,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:37:30,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:37:30,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 18:37:30,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:37:30,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:37:30,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:37:30,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 18:37:30,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:37:30,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 18:37:30,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:37:30,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-12 18:37:30,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:37:30,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:37:30,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:37:30,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 18:37:30,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:37:30,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 18:37:30,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:37:30,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 18:37:30,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:37:30,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-12 18:37:30,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:37:30,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-12 18:37:30,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:37:30,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:37:30,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:37:30,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-12 18:37:30,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:37:30,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 18:37:30,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:37:30,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 18:37:30,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 18:37:30,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-12 18:37:30,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:37:30,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-12 18:37:30,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:37:30,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:37:30,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:37:30,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 18:37:30,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:37:30,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 18:37:30,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:37:30,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:37:30,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-12 18:37:30,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:37:30,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:37:30,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-12 18:37:30,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:37:30,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:37:30,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:37:30,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 18:37:30,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:37:30,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:37:30,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:37:30,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:37:30,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-12 18:37:30,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:37:30,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:37:30,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 18:37:30,267 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1076913681] [2020-10-12 18:37:30,268 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 18:37:30,268 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-12 18:37:30,268 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715423420] [2020-10-12 18:37:30,268 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 18:37:30,269 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:37:30,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 18:37:30,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-12 18:37:30,269 INFO L87 Difference]: Start difference. First operand 32923 states and 52016 transitions. Second operand 9 states. [2020-10-12 18:37:30,459 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-12 18:37:34,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:37:34,363 INFO L93 Difference]: Finished difference Result 79130 states and 124074 transitions. [2020-10-12 18:37:34,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 18:37:34,364 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 97 [2020-10-12 18:37:34,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:37:34,504 INFO L225 Difference]: With dead ends: 79130 [2020-10-12 18:37:34,504 INFO L226 Difference]: Without dead ends: 46327 [2020-10-12 18:37:34,566 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=78, Invalid=228, Unknown=0, NotChecked=0, Total=306 [2020-10-12 18:37:34,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46327 states. [2020-10-12 18:37:37,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46327 to 39498. [2020-10-12 18:37:37,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39498 states. [2020-10-12 18:37:37,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39498 states to 39498 states and 62045 transitions. [2020-10-12 18:37:37,191 INFO L78 Accepts]: Start accepts. Automaton has 39498 states and 62045 transitions. Word has length 97 [2020-10-12 18:37:37,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:37:37,192 INFO L479 AbstractCegarLoop]: Abstraction has 39498 states and 62045 transitions. [2020-10-12 18:37:37,192 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 18:37:37,192 INFO L276 IsEmpty]: Start isEmpty. Operand 39498 states and 62045 transitions. [2020-10-12 18:37:37,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-12 18:37:37,194 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:37:37,194 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:37:37,194 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 18:37:37,194 INFO L427 AbstractCegarLoop]: === Iteration 14 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:37:37,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:37:37,195 INFO L82 PathProgramCache]: Analyzing trace with hash 1519963989, now seen corresponding path program 1 times [2020-10-12 18:37:37,195 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:37:37,195 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [392167076] [2020-10-12 18:37:37,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:37:37,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:37:37,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:37:37,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:37:37,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:37:37,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:37:37,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:37:37,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:37:37,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:37:37,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:37:42,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:37:42,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-12 18:37:42,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-12 18:37:42,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-12 18:37:42,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:37:42,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 18:37:42,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-12 18:37:42,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-12 18:37:42,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:37:42,407 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-12 18:37:42,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:37:42,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:37:42,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:37:42,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:37:42,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:37:42,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:37:42,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 18:37:42,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:37:42,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:37:42,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:37:42,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:37:42,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:37:42,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 18:37:42,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:37:42,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:37:42,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:37:42,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-12 18:37:42,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:37:42,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-12 18:37:42,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:37:42,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 18:37:42,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:37:42,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-12 18:37:42,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:37:42,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-12 18:37:42,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:37:42,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:37:42,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:37:42,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 18:37:42,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:37:42,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:37:42,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:37:42,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 18:37:42,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:37:42,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 18:37:42,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:37:42,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-12 18:37:42,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:37:42,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:37:42,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:37:42,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 18:37:42,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:37:42,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 18:37:42,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:37:42,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 18:37:42,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 18:37:42,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 18:37:42,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:37:42,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-12 18:37:42,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:37:42,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:37:42,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:37:42,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 18:37:42,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:37:42,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 18:37:42,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:37:42,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 18:37:42,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:37:42,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-12 18:37:42,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:37:42,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-12 18:37:42,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:37:42,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:37:42,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:37:42,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 18:37:42,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:37:42,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 18:37:42,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:37:42,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 18:37:42,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:37:42,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-12 18:37:42,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:37:42,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-12 18:37:42,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:37:42,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:37:42,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:37:42,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:37:42,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-12 18:37:42,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:37:42,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 18:37:42,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:37:42,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 18:37:42,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-12 18:37:42,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 18:37:42,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:37:42,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 18:37:42,638 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [392167076] [2020-10-12 18:37:42,638 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 18:37:42,638 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-12 18:37:42,638 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17814589] [2020-10-12 18:37:42,639 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 18:37:42,639 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:37:42,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 18:37:42,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-12 18:37:42,640 INFO L87 Difference]: Start difference. First operand 39498 states and 62045 transitions. Second operand 10 states. [2020-10-12 18:37:42,829 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-12 18:37:43,704 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-12 18:37:45,451 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-12 18:37:50,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:37:50,838 INFO L93 Difference]: Finished difference Result 138413 states and 220042 transitions. [2020-10-12 18:37:50,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-12 18:37:50,839 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 100 [2020-10-12 18:37:50,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:37:51,260 INFO L225 Difference]: With dead ends: 138413 [2020-10-12 18:37:51,261 INFO L226 Difference]: Without dead ends: 102087 [2020-10-12 18:37:51,384 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=150, Invalid=552, Unknown=0, NotChecked=0, Total=702 [2020-10-12 18:37:51,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102087 states. [2020-10-12 18:37:58,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102087 to 89433. [2020-10-12 18:37:58,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89433 states. [2020-10-12 18:37:58,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89433 states to 89433 states and 138193 transitions. [2020-10-12 18:37:58,305 INFO L78 Accepts]: Start accepts. Automaton has 89433 states and 138193 transitions. Word has length 100 [2020-10-12 18:37:58,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:37:58,306 INFO L479 AbstractCegarLoop]: Abstraction has 89433 states and 138193 transitions. [2020-10-12 18:37:58,306 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 18:37:58,306 INFO L276 IsEmpty]: Start isEmpty. Operand 89433 states and 138193 transitions. [2020-10-12 18:37:58,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-12 18:37:58,308 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:37:58,308 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:37:58,308 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-12 18:37:58,308 INFO L427 AbstractCegarLoop]: === Iteration 15 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:37:58,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:37:58,309 INFO L82 PathProgramCache]: Analyzing trace with hash 1935589849, now seen corresponding path program 1 times [2020-10-12 18:37:58,309 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:37:58,309 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1856296346] [2020-10-12 18:37:58,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:37:58,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:37:58,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:37:58,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:37:58,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:37:58,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:37:58,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:37:58,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:38:02,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:38:03,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:38:03,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-12 18:38:03,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 18:38:03,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5214 [2020-10-12 18:38:03,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:38:03,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 18:38:03,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-12 18:38:03,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-12 18:38:03,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:38:03,720 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-12 18:38:03,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:38:03,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:38:03,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:38:03,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:38:03,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:38:03,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:38:03,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 18:38:03,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:38:03,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:38:03,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:38:03,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:38:03,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:38:03,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 18:38:03,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:38:03,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:38:03,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:38:03,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-12 18:38:03,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:38:03,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-12 18:38:03,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:38:03,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:38:03,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:38:03,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-12 18:38:03,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:38:03,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-12 18:38:03,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:38:03,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:38:03,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:38:03,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 18:38:03,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:38:03,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:38:03,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:38:03,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 18:38:03,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:38:03,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 18:38:03,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:38:03,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-12 18:38:03,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:38:03,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:38:03,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:38:03,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 18:38:03,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:38:03,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-12 18:38:03,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:38:03,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:38:03,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 18:38:03,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 18:38:03,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:38:03,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-12 18:38:03,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:38:03,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:38:03,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:38:03,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 18:38:03,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:38:03,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 18:38:03,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:38:03,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:38:03,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 18:38:03,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 18:38:03,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:38:03,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-12 18:38:03,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:38:03,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:38:03,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:38:03,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 18:38:03,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:38:03,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 18:38:03,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:38:03,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:38:03,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 18:38:03,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 18:38:03,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:38:03,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-12 18:38:03,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:38:03,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:38:03,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:38:03,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-12 18:38:03,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:38:03,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 18:38:03,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:38:03,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 18:38:03,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 18:38:03,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 18:38:03,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:38:04,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 18:38:04,027 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1856296346] [2020-10-12 18:38:04,027 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 18:38:04,027 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-12 18:38:04,028 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653704540] [2020-10-12 18:38:04,028 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 18:38:04,028 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:38:04,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 18:38:04,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2020-10-12 18:38:04,029 INFO L87 Difference]: Start difference. First operand 89433 states and 138193 transitions. Second operand 13 states. [2020-10-12 18:38:04,263 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-12 18:38:04,782 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-12 18:38:04,960 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-12 18:38:06,170 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-12 18:38:06,921 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-12 18:38:07,993 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-12 18:38:08,888 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-12 18:38:14,899 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 149