/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=NARROWEST --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-reduced/pals_opt-floodmax.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 15:00:06,423 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 15:00:06,427 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 15:00:06,465 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 15:00:06,465 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 15:00:06,473 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 15:00:06,475 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 15:00:06,478 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 15:00:06,481 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 15:00:06,483 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 15:00:06,484 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 15:00:06,485 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 15:00:06,485 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 15:00:06,488 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 15:00:06,491 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 15:00:06,492 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 15:00:06,493 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 15:00:06,494 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 15:00:06,496 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 15:00:06,503 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 15:00:06,505 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 15:00:06,506 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 15:00:06,507 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 15:00:06,508 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 15:00:06,520 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 15:00:06,523 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 15:00:06,523 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 15:00:06,525 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 15:00:06,528 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 15:00:06,529 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 15:00:06,529 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 15:00:06,530 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 15:00:06,531 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 15:00:06,532 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 15:00:06,532 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 15:00:06,533 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 15:00:06,537 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 15:00:06,537 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 15:00:06,538 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 15:00:06,538 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 15:00:06,541 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 15:00:06,542 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 [2020-10-13 15:00:06,576 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 15:00:06,576 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 15:00:06,577 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 15:00:06,577 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 15:00:06,578 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 15:00:06,578 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 15:00:06,578 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 15:00:06,578 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 15:00:06,579 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 15:00:06,579 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 15:00:06,579 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 15:00:06,579 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 15:00:06,579 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 15:00:06,579 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 15:00:06,580 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 15:00:06,580 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 15:00:06,580 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 15:00:06,580 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 15:00:06,580 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 15:00:06,581 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 15:00:06,581 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 15:00:06,581 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 15:00:06,581 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 15:00:06,581 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 15:00:06,582 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 15:00:06,582 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 15:00:06,582 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 15:00:06,582 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 15:00:06,582 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 15:00:06,583 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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 15:00:06,892 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 15:00:06,907 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 15:00:06,910 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 15:00:06,912 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 15:00:06,912 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 15:00:06,913 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2020-10-13 15:00:06,975 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/61b35259f/68671703281a4bf68e230148a1326e4d/FLAGaa0e32fe1 [2020-10-13 15:00:07,501 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 15:00:07,502 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2020-10-13 15:00:07,526 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/61b35259f/68671703281a4bf68e230148a1326e4d/FLAGaa0e32fe1 [2020-10-13 15:00:07,761 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/61b35259f/68671703281a4bf68e230148a1326e4d [2020-10-13 15:00:07,771 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 15:00:07,774 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 15:00:07,776 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 15:00:07,777 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 15:00:07,780 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 15:00:07,781 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 03:00:07" (1/1) ... [2020-10-13 15:00:07,785 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79b03bc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:00:07, skipping insertion in model container [2020-10-13 15:00:07,785 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 03:00:07" (1/1) ... [2020-10-13 15:00:07,794 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 15:00:07,876 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 15:00:08,427 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 15:00:08,438 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 15:00:08,597 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 15:00:08,616 INFO L208 MainTranslator]: Completed translation [2020-10-13 15:00:08,617 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:00:08 WrapperNode [2020-10-13 15:00:08,617 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 15:00:08,618 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 15:00:08,618 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 15:00:08,618 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 15:00:08,637 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:00:08" (1/1) ... [2020-10-13 15:00:08,638 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:00:08" (1/1) ... [2020-10-13 15:00:08,655 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:00:08" (1/1) ... [2020-10-13 15:00:08,656 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:00:08" (1/1) ... [2020-10-13 15:00:08,683 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:00:08" (1/1) ... [2020-10-13 15:00:08,706 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:00:08" (1/1) ... [2020-10-13 15:00:08,713 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:00:08" (1/1) ... [2020-10-13 15:00:08,721 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 15:00:08,721 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 15:00:08,721 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 15:00:08,722 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 15:00:08,723 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:00:08" (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 [2020-10-13 15:00:08,797 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 15:00:08,798 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 15:00:08,798 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-13 15:00:08,798 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 15:00:08,798 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 15:00:08,799 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-13 15:00:08,799 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-13 15:00:08,799 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-13 15:00:08,799 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-13 15:00:08,799 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-13 15:00:08,799 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-13 15:00:08,800 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-13 15:00:08,800 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-13 15:00:08,800 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-13 15:00:08,800 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-13 15:00:08,800 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-13 15:00:08,800 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-13 15:00:08,801 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 15:00:08,801 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 15:00:08,801 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 15:00:10,117 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 15:00:10,117 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-13 15:00:10,125 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 03:00:10 BoogieIcfgContainer [2020-10-13 15:00:10,125 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 15:00:10,126 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 15:00:10,127 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 15:00:10,130 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 15:00:10,130 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 03:00:07" (1/3) ... [2020-10-13 15:00:10,131 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@618ce227 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 03:00:10, skipping insertion in model container [2020-10-13 15:00:10,131 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:00:08" (2/3) ... [2020-10-13 15:00:10,132 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@618ce227 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 03:00:10, skipping insertion in model container [2020-10-13 15:00:10,132 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 03:00:10" (3/3) ... [2020-10-13 15:00:10,134 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2020-10-13 15:00:10,145 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 15:00:10,153 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 15:00:10,169 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 15:00:10,196 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 15:00:10,197 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 15:00:10,197 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 15:00:10,197 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 15:00:10,197 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 15:00:10,198 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 15:00:10,198 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 15:00:10,198 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 15:00:10,223 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states. [2020-10-13 15:00:10,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-10-13 15:00:10,240 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:00:10,242 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:00:10,242 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:00:10,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:00:10,249 INFO L82 PathProgramCache]: Analyzing trace with hash 996963792, now seen corresponding path program 1 times [2020-10-13 15:00:10,257 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:00:10,258 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [250298563] [2020-10-13 15:00:10,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:00:10,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:00:10,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:11,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:11,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:11,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:11,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:11,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:11,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:11,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:12,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:12,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:13,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:13,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:14,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:15,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:00:15,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-13 15:00:15,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-13 15:00:15,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-13 15:00:15,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:00:15,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:00:15,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 15:00:15,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-13 15:00:15,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 15:00:16,154 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-13 15:00:16,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:00:16,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:00:16,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:16,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:00:16,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:00:16,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:00:16,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 15:00:16,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:00:16,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:00:16,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:00:16,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:00:16,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:00:16,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:00:16,270 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [250298563] [2020-10-13 15:00:16,272 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:00:16,273 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:00:16,273 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256545421] [2020-10-13 15:00:16,279 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:00:16,279 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:00:16,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:00:16,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:00:16,296 INFO L87 Difference]: Start difference. First operand 342 states. Second operand 5 states. [2020-10-13 15:00:19,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:00:19,589 INFO L93 Difference]: Finished difference Result 985 states and 1734 transitions. [2020-10-13 15:00:19,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 15:00:19,591 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 157 [2020-10-13 15:00:19,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:00:19,630 INFO L225 Difference]: With dead ends: 985 [2020-10-13 15:00:19,630 INFO L226 Difference]: Without dead ends: 648 [2020-10-13 15:00:19,639 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:00:19,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 648 states. [2020-10-13 15:00:19,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 648 to 646. [2020-10-13 15:00:19,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 646 states. [2020-10-13 15:00:19,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 646 states to 646 states and 941 transitions. [2020-10-13 15:00:19,733 INFO L78 Accepts]: Start accepts. Automaton has 646 states and 941 transitions. Word has length 157 [2020-10-13 15:00:19,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:00:19,734 INFO L479 AbstractCegarLoop]: Abstraction has 646 states and 941 transitions. [2020-10-13 15:00:19,734 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:00:19,734 INFO L276 IsEmpty]: Start isEmpty. Operand 646 states and 941 transitions. [2020-10-13 15:00:19,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-13 15:00:19,740 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:00:19,740 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:00:19,740 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 15:00:19,741 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:00:19,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:00:19,741 INFO L82 PathProgramCache]: Analyzing trace with hash 1484768724, now seen corresponding path program 1 times [2020-10-13 15:00:19,741 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:00:19,742 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [337077399] [2020-10-13 15:00:19,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:00:19,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:00:19,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:19,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:19,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:20,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:20,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:20,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:20,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:20,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:20,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:21,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:21,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:24,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:00:24,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-13 15:00:24,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-13 15:00:24,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 15:00:24,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:00:24,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:00:24,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 15:00:24,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 15:00:24,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 15:00:25,082 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-13 15:00:25,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:00:25,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:00:25,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:25,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:00:25,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:00:25,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:00:25,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 15:00:25,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:00:25,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:00:25,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:00:25,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:00:25,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:00:25,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:00:25,153 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [337077399] [2020-10-13 15:00:25,154 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:00:25,154 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 15:00:25,155 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448811277] [2020-10-13 15:00:25,158 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 15:00:25,158 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:00:25,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 15:00:25,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:00:25,159 INFO L87 Difference]: Start difference. First operand 646 states and 941 transitions. Second operand 4 states. [2020-10-13 15:00:27,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:00:27,824 INFO L93 Difference]: Finished difference Result 1892 states and 2753 transitions. [2020-10-13 15:00:27,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 15:00:27,824 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 158 [2020-10-13 15:00:27,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:00:27,832 INFO L225 Difference]: With dead ends: 1892 [2020-10-13 15:00:27,833 INFO L226 Difference]: Without dead ends: 1278 [2020-10-13 15:00:27,837 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:00:27,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1278 states. [2020-10-13 15:00:27,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1278 to 648. [2020-10-13 15:00:27,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 648 states. [2020-10-13 15:00:27,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 648 states to 648 states and 943 transitions. [2020-10-13 15:00:27,894 INFO L78 Accepts]: Start accepts. Automaton has 648 states and 943 transitions. Word has length 158 [2020-10-13 15:00:27,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:00:27,896 INFO L479 AbstractCegarLoop]: Abstraction has 648 states and 943 transitions. [2020-10-13 15:00:27,896 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 15:00:27,896 INFO L276 IsEmpty]: Start isEmpty. Operand 648 states and 943 transitions. [2020-10-13 15:00:27,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-10-13 15:00:27,900 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:00:27,900 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:00:27,901 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 15:00:27,901 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:00:27,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:00:27,901 INFO L82 PathProgramCache]: Analyzing trace with hash 1395680826, now seen corresponding path program 1 times [2020-10-13 15:00:27,901 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:00:27,902 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1744013199] [2020-10-13 15:00:27,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:00:27,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:00:27,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:28,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:28,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:28,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:28,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:28,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:28,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:28,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:28,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:29,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:29,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:29,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:31,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:31,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:32,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:32,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:32,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:32,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:00:32,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-10-13 15:00:32,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-13 15:00:32,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 15:00:32,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:00:32,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:00:32,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 15:00:32,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-13 15:00:32,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:00:33,295 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-13 15:00:33,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:00:33,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:00:33,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:33,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:00:33,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:00:33,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:00:33,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 15:00:33,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:00:33,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:00:33,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:00:33,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:00:33,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:00:33,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:00:33,393 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1744013199] [2020-10-13 15:00:33,393 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:00:33,393 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:00:33,394 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454921455] [2020-10-13 15:00:33,394 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:00:33,395 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:00:33,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:00:33,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:00:33,395 INFO L87 Difference]: Start difference. First operand 648 states and 943 transitions. Second operand 5 states. [2020-10-13 15:00:36,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:00:36,455 INFO L93 Difference]: Finished difference Result 1874 states and 2723 transitions. [2020-10-13 15:00:36,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:00:36,456 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 159 [2020-10-13 15:00:36,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:00:36,464 INFO L225 Difference]: With dead ends: 1874 [2020-10-13 15:00:36,464 INFO L226 Difference]: Without dead ends: 1242 [2020-10-13 15:00:36,467 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:00:36,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1242 states. [2020-10-13 15:00:36,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1242 to 1240. [2020-10-13 15:00:36,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1240 states. [2020-10-13 15:00:36,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 1785 transitions. [2020-10-13 15:00:36,534 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 1785 transitions. Word has length 159 [2020-10-13 15:00:36,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:00:36,534 INFO L479 AbstractCegarLoop]: Abstraction has 1240 states and 1785 transitions. [2020-10-13 15:00:36,535 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:00:36,535 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 1785 transitions. [2020-10-13 15:00:36,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-10-13 15:00:36,538 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:00:36,539 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:00:36,539 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 15:00:36,539 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:00:36,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:00:36,539 INFO L82 PathProgramCache]: Analyzing trace with hash -1316932305, now seen corresponding path program 1 times [2020-10-13 15:00:36,540 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:00:36,543 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [939294336] [2020-10-13 15:00:36,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:00:36,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:00:36,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:36,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:36,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:36,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:36,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:36,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:37,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:37,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:37,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:38,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:41,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:41,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:41,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:41,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:00:41,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-10-13 15:00:41,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-13 15:00:41,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 15:00:41,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:00:41,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:00:41,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-13 15:00:41,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 15:00:41,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:00:41,869 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-13 15:00:41,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:00:41,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:00:41,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:41,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:00:41,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:00:41,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:00:41,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 15:00:41,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:00:41,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:00:41,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:00:41,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:00:41,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:00:41,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:00:41,928 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [939294336] [2020-10-13 15:00:41,928 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:00:41,930 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:00:41,930 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105229064] [2020-10-13 15:00:41,931 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:00:41,931 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:00:41,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:00:41,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:00:41,932 INFO L87 Difference]: Start difference. First operand 1240 states and 1785 transitions. Second operand 5 states. [2020-10-13 15:00:43,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:00:43,452 INFO L93 Difference]: Finished difference Result 2159 states and 3103 transitions. [2020-10-13 15:00:43,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:00:43,452 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 159 [2020-10-13 15:00:43,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:00:43,462 INFO L225 Difference]: With dead ends: 2159 [2020-10-13 15:00:43,462 INFO L226 Difference]: Without dead ends: 953 [2020-10-13 15:00:43,466 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:00:43,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 953 states. [2020-10-13 15:00:43,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 953 to 952. [2020-10-13 15:00:43,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 952 states. [2020-10-13 15:00:43,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 952 states to 952 states and 1365 transitions. [2020-10-13 15:00:43,525 INFO L78 Accepts]: Start accepts. Automaton has 952 states and 1365 transitions. Word has length 159 [2020-10-13 15:00:43,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:00:43,526 INFO L479 AbstractCegarLoop]: Abstraction has 952 states and 1365 transitions. [2020-10-13 15:00:43,526 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:00:43,526 INFO L276 IsEmpty]: Start isEmpty. Operand 952 states and 1365 transitions. [2020-10-13 15:00:43,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-10-13 15:00:43,529 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:00:43,529 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:00:43,530 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 15:00:43,530 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:00:43,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:00:43,530 INFO L82 PathProgramCache]: Analyzing trace with hash -221673502, now seen corresponding path program 1 times [2020-10-13 15:00:43,531 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:00:43,531 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [203997722] [2020-10-13 15:00:43,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:00:43,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:00:43,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:43,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:43,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:43,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:43,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:43,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:44,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:44,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:44,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:45,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:45,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:46,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:48,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:48,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:48,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:48,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:00:48,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-13 15:00:48,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-13 15:00:48,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-13 15:00:48,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:00:48,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:00:48,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-13 15:00:48,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 15:00:48,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:00:48,847 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-13 15:00:48,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:00:48,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:00:48,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:48,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:00:48,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:00:48,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:00:48,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 15:00:48,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:00:48,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:00:48,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:00:48,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:00:48,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:00:48,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:00:48,902 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [203997722] [2020-10-13 15:00:48,902 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:00:48,902 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 15:00:48,902 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889771490] [2020-10-13 15:00:48,903 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 15:00:48,903 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:00:48,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 15:00:48,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:00:48,904 INFO L87 Difference]: Start difference. First operand 952 states and 1365 transitions. Second operand 4 states. [2020-10-13 15:00:50,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:00:50,881 INFO L93 Difference]: Finished difference Result 2094 states and 3088 transitions. [2020-10-13 15:00:50,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 15:00:50,882 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 163 [2020-10-13 15:00:50,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:00:50,891 INFO L225 Difference]: With dead ends: 2094 [2020-10-13 15:00:50,891 INFO L226 Difference]: Without dead ends: 1331 [2020-10-13 15:00:50,893 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:00:50,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1331 states. [2020-10-13 15:00:50,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1331 to 1167. [2020-10-13 15:00:50,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1167 states. [2020-10-13 15:00:50,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1167 states to 1167 states and 1714 transitions. [2020-10-13 15:00:50,952 INFO L78 Accepts]: Start accepts. Automaton has 1167 states and 1714 transitions. Word has length 163 [2020-10-13 15:00:50,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:00:50,953 INFO L479 AbstractCegarLoop]: Abstraction has 1167 states and 1714 transitions. [2020-10-13 15:00:50,953 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 15:00:50,953 INFO L276 IsEmpty]: Start isEmpty. Operand 1167 states and 1714 transitions. [2020-10-13 15:00:50,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-10-13 15:00:50,956 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:00:50,956 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:00:50,957 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 15:00:50,957 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:00:50,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:00:50,957 INFO L82 PathProgramCache]: Analyzing trace with hash 298142810, now seen corresponding path program 1 times [2020-10-13 15:00:50,957 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:00:50,958 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [106815622] [2020-10-13 15:00:50,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:00:50,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:00:51,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:51,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:51,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:51,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:51,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:51,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:51,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:51,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:51,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:52,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:53,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:53,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:55,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:55,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:55,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:00:55,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-13 15:00:55,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-13 15:00:55,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 15:00:55,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:00:55,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:00:55,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 15:00:55,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-13 15:00:55,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:00:56,289 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-13 15:00:56,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:00:56,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:00:56,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:56,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:00:56,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:00:56,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:00:56,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 15:00:56,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:00:56,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:00:56,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:00:56,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:00:56,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:00:56,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:00:56,370 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [106815622] [2020-10-13 15:00:56,370 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:00:56,370 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:00:56,370 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436016207] [2020-10-13 15:00:56,371 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:00:56,371 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:00:56,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:00:56,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:00:56,372 INFO L87 Difference]: Start difference. First operand 1167 states and 1714 transitions. Second operand 5 states. [2020-10-13 15:00:59,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:00:59,065 INFO L93 Difference]: Finished difference Result 3347 states and 4900 transitions. [2020-10-13 15:00:59,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:00:59,066 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 166 [2020-10-13 15:00:59,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:00:59,076 INFO L225 Difference]: With dead ends: 3347 [2020-10-13 15:00:59,076 INFO L226 Difference]: Without dead ends: 2233 [2020-10-13 15:00:59,080 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:00:59,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2233 states. [2020-10-13 15:00:59,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2233 to 2231. [2020-10-13 15:00:59,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2231 states. [2020-10-13 15:00:59,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2231 states to 2231 states and 3243 transitions. [2020-10-13 15:00:59,220 INFO L78 Accepts]: Start accepts. Automaton has 2231 states and 3243 transitions. Word has length 166 [2020-10-13 15:00:59,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:00:59,221 INFO L479 AbstractCegarLoop]: Abstraction has 2231 states and 3243 transitions. [2020-10-13 15:00:59,221 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:00:59,221 INFO L276 IsEmpty]: Start isEmpty. Operand 2231 states and 3243 transitions. [2020-10-13 15:00:59,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-10-13 15:00:59,227 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:00:59,228 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:00:59,228 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 15:00:59,228 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:00:59,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:00:59,229 INFO L82 PathProgramCache]: Analyzing trace with hash 429903532, now seen corresponding path program 1 times [2020-10-13 15:00:59,229 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:00:59,230 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1745460810] [2020-10-13 15:00:59,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:00:59,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:00:59,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:59,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:59,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:59,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:59,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:59,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:59,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:59,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:00,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:01,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:03,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:03,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:03,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:03,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:04,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:01:04,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-10-13 15:01:04,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-13 15:01:04,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 15:01:04,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:01:04,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:01:04,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 15:01:04,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 15:01:04,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:01:04,501 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-13 15:01:04,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:01:04,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:01:04,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:04,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:01:04,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:01:04,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:01:04,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 15:01:04,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:01:04,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:01:04,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:01:04,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:01:04,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:01:04,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:01:04,546 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1745460810] [2020-10-13 15:01:04,547 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:01:04,547 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 15:01:04,547 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305400343] [2020-10-13 15:01:04,548 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 15:01:04,548 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:01:04,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 15:01:04,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:01:04,548 INFO L87 Difference]: Start difference. First operand 2231 states and 3243 transitions. Second operand 4 states. [2020-10-13 15:01:06,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:01:06,596 INFO L93 Difference]: Finished difference Result 6587 states and 9568 transitions. [2020-10-13 15:01:06,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 15:01:06,596 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 167 [2020-10-13 15:01:06,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:01:06,614 INFO L225 Difference]: With dead ends: 6587 [2020-10-13 15:01:06,614 INFO L226 Difference]: Without dead ends: 4418 [2020-10-13 15:01:06,619 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:01:06,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4418 states. [2020-10-13 15:01:06,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4418 to 2237. [2020-10-13 15:01:06,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2237 states. [2020-10-13 15:01:06,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2237 states to 2237 states and 3249 transitions. [2020-10-13 15:01:06,805 INFO L78 Accepts]: Start accepts. Automaton has 2237 states and 3249 transitions. Word has length 167 [2020-10-13 15:01:06,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:01:06,805 INFO L479 AbstractCegarLoop]: Abstraction has 2237 states and 3249 transitions. [2020-10-13 15:01:06,806 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 15:01:06,806 INFO L276 IsEmpty]: Start isEmpty. Operand 2237 states and 3249 transitions. [2020-10-13 15:01:06,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-10-13 15:01:06,812 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:01:06,813 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:01:06,813 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 15:01:06,813 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:01:06,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:01:06,814 INFO L82 PathProgramCache]: Analyzing trace with hash -253585573, now seen corresponding path program 1 times [2020-10-13 15:01:06,814 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:01:06,814 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [994751028] [2020-10-13 15:01:06,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:01:06,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:01:06,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:06,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:07,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:07,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:07,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:07,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:07,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:08,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:09,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:10,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:10,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:10,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:11,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:01:11,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-13 15:01:11,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-13 15:01:11,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 15:01:11,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:01:11,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:01:11,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-13 15:01:11,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 15:01:11,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:01:12,126 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-13 15:01:12,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:01:12,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:01:12,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:12,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:01:12,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:01:12,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:01:12,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 15:01:12,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:01:12,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:01:12,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:01:12,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:01:12,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:01:12,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:01:12,201 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [994751028] [2020-10-13 15:01:12,201 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:01:12,201 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:01:12,201 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478015639] [2020-10-13 15:01:12,202 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:01:12,202 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:01:12,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:01:12,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:01:12,203 INFO L87 Difference]: Start difference. First operand 2237 states and 3249 transitions. Second operand 5 states. [2020-10-13 15:01:13,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:01:13,615 INFO L93 Difference]: Finished difference Result 4418 states and 6416 transitions. [2020-10-13 15:01:13,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:01:13,615 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 168 [2020-10-13 15:01:13,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:01:13,622 INFO L225 Difference]: With dead ends: 4418 [2020-10-13 15:01:13,623 INFO L226 Difference]: Without dead ends: 2237 [2020-10-13 15:01:13,627 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:01:13,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2237 states. [2020-10-13 15:01:13,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2237 to 2230. [2020-10-13 15:01:13,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2230 states. [2020-10-13 15:01:13,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2230 states to 2230 states and 3235 transitions. [2020-10-13 15:01:13,756 INFO L78 Accepts]: Start accepts. Automaton has 2230 states and 3235 transitions. Word has length 168 [2020-10-13 15:01:13,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:01:13,757 INFO L479 AbstractCegarLoop]: Abstraction has 2230 states and 3235 transitions. [2020-10-13 15:01:13,757 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:01:13,758 INFO L276 IsEmpty]: Start isEmpty. Operand 2230 states and 3235 transitions. [2020-10-13 15:01:13,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-10-13 15:01:13,762 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:01:13,762 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:01:13,762 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 15:01:13,763 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:01:13,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:01:13,763 INFO L82 PathProgramCache]: Analyzing trace with hash -1189811471, now seen corresponding path program 1 times [2020-10-13 15:01:13,763 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:01:13,766 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [747418994] [2020-10-13 15:01:13,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:01:13,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:01:13,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:13,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:13,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:13,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:14,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:14,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:14,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:14,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:14,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:14,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:14,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:15,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:16,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:16,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:16,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:16,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:16,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:16,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:18,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:01:18,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-13 15:01:18,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-13 15:01:18,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 15:01:18,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:01:18,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:01:18,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 15:01:18,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 15:01:18,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:01:19,066 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-13 15:01:19,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:01:19,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:01:19,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:19,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:01:19,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:01:19,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:01:19,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 15:01:19,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:01:19,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:01:19,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:01:19,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:01:19,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:01:19,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:01:19,133 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [747418994] [2020-10-13 15:01:19,133 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:01:19,133 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:01:19,134 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062095949] [2020-10-13 15:01:19,134 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:01:19,134 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:01:19,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:01:19,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:01:19,135 INFO L87 Difference]: Start difference. First operand 2230 states and 3235 transitions. Second operand 5 states. [2020-10-13 15:01:20,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:01:20,956 INFO L93 Difference]: Finished difference Result 6417 states and 9278 transitions. [2020-10-13 15:01:20,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:01:20,957 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 168 [2020-10-13 15:01:20,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:01:20,971 INFO L225 Difference]: With dead ends: 6417 [2020-10-13 15:01:20,971 INFO L226 Difference]: Without dead ends: 4263 [2020-10-13 15:01:20,976 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:01:20,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4263 states. [2020-10-13 15:01:21,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4263 to 4261. [2020-10-13 15:01:21,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4261 states. [2020-10-13 15:01:21,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4261 states to 4261 states and 6101 transitions. [2020-10-13 15:01:21,188 INFO L78 Accepts]: Start accepts. Automaton has 4261 states and 6101 transitions. Word has length 168 [2020-10-13 15:01:21,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:01:21,188 INFO L479 AbstractCegarLoop]: Abstraction has 4261 states and 6101 transitions. [2020-10-13 15:01:21,188 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:01:21,188 INFO L276 IsEmpty]: Start isEmpty. Operand 4261 states and 6101 transitions. [2020-10-13 15:01:21,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-10-13 15:01:21,195 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:01:21,196 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:01:21,196 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 15:01:21,196 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:01:21,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:01:21,196 INFO L82 PathProgramCache]: Analyzing trace with hash -272907884, now seen corresponding path program 1 times [2020-10-13 15:01:21,197 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:01:21,197 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1779517796] [2020-10-13 15:01:21,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:01:21,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:01:21,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:21,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:21,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:21,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:21,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:21,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:21,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:21,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:21,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:21,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:22,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:23,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:25,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:25,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:25,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:25,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:25,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:25,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:26,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:26,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:01:26,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-13 15:01:26,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-10-13 15:01:26,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-13 15:01:26,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:01:26,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:01:26,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-13 15:01:26,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-13 15:01:26,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:01:26,490 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-13 15:01:26,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:01:26,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:01:26,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:26,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:01:26,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:01:26,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:01:26,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 15:01:26,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:01:26,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:01:26,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:01:26,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:01:26,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:01:26,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:01:26,532 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1779517796] [2020-10-13 15:01:26,533 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:01:26,533 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 15:01:26,533 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000380195] [2020-10-13 15:01:26,533 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 15:01:26,534 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:01:26,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 15:01:26,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:01:26,534 INFO L87 Difference]: Start difference. First operand 4261 states and 6101 transitions. Second operand 4 states. [2020-10-13 15:01:29,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:01:29,295 INFO L93 Difference]: Finished difference Result 6444 states and 9160 transitions. [2020-10-13 15:01:29,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 15:01:29,296 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 168 [2020-10-13 15:01:29,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:01:29,313 INFO L225 Difference]: With dead ends: 6444 [2020-10-13 15:01:29,313 INFO L226 Difference]: Without dead ends: 4421 [2020-10-13 15:01:29,317 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:01:29,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4421 states. [2020-10-13 15:01:29,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4421 to 4419. [2020-10-13 15:01:29,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4419 states. [2020-10-13 15:01:29,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4419 states to 4419 states and 6245 transitions. [2020-10-13 15:01:29,529 INFO L78 Accepts]: Start accepts. Automaton has 4419 states and 6245 transitions. Word has length 168 [2020-10-13 15:01:29,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:01:29,529 INFO L479 AbstractCegarLoop]: Abstraction has 4419 states and 6245 transitions. [2020-10-13 15:01:29,529 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 15:01:29,530 INFO L276 IsEmpty]: Start isEmpty. Operand 4419 states and 6245 transitions. [2020-10-13 15:01:29,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-10-13 15:01:29,536 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:01:29,536 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:01:29,536 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 15:01:29,537 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:01:29,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:01:29,537 INFO L82 PathProgramCache]: Analyzing trace with hash -1432956745, now seen corresponding path program 1 times [2020-10-13 15:01:29,537 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:01:29,537 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1532885355] [2020-10-13 15:01:29,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:01:29,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:01:29,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:29,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:29,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:29,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:29,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:29,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:29,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:29,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:30,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:33,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:33,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:34,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:34,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:34,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:34,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:01:34,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-10-13 15:01:34,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-13 15:01:34,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-13 15:01:34,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:01:34,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:01:34,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-13 15:01:34,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 15:01:34,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:01:34,801 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-13 15:01:34,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:01:34,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:01:34,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:34,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:01:34,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:01:34,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:01:34,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 15:01:34,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:01:34,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:01:34,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:01:34,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:01:34,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:01:34,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:01:34,843 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1532885355] [2020-10-13 15:01:34,843 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:01:34,843 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 15:01:34,843 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75504568] [2020-10-13 15:01:34,844 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 15:01:34,844 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:01:34,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 15:01:34,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:01:34,844 INFO L87 Difference]: Start difference. First operand 4419 states and 6245 transitions. Second operand 4 states. [2020-10-13 15:01:37,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:01:37,691 INFO L93 Difference]: Finished difference Result 10694 states and 15123 transitions. [2020-10-13 15:01:37,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 15:01:37,691 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 169 [2020-10-13 15:01:37,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:01:37,718 INFO L225 Difference]: With dead ends: 10694 [2020-10-13 15:01:37,719 INFO L226 Difference]: Without dead ends: 8699 [2020-10-13 15:01:37,723 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:01:37,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8699 states. [2020-10-13 15:01:37,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8699 to 4431. [2020-10-13 15:01:37,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4431 states. [2020-10-13 15:01:37,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4431 states to 4431 states and 6257 transitions. [2020-10-13 15:01:37,967 INFO L78 Accepts]: Start accepts. Automaton has 4431 states and 6257 transitions. Word has length 169 [2020-10-13 15:01:37,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:01:37,968 INFO L479 AbstractCegarLoop]: Abstraction has 4431 states and 6257 transitions. [2020-10-13 15:01:37,968 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 15:01:37,968 INFO L276 IsEmpty]: Start isEmpty. Operand 4431 states and 6257 transitions. [2020-10-13 15:01:37,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-13 15:01:37,973 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:01:37,974 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:01:37,974 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 15:01:37,974 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:01:37,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:01:37,975 INFO L82 PathProgramCache]: Analyzing trace with hash 1319768616, now seen corresponding path program 1 times [2020-10-13 15:01:37,975 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:01:37,975 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [112274569] [2020-10-13 15:01:37,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:01:37,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:01:38,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:38,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:38,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:38,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:38,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:38,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:38,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:38,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:38,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:40,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:40,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:41,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:41,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:41,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:43,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:01:43,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-13 15:01:43,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-13 15:01:43,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-13 15:01:43,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:01:43,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:01:43,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-10-13 15:01:43,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 15:01:43,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:01:43,237 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-13 15:01:43,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:01:43,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:01:43,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:43,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:01:43,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:01:43,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:01:43,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 15:01:43,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:01:43,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:01:43,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:01:43,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:01:43,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:01:43,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:01:43,272 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [112274569] [2020-10-13 15:01:43,273 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:01:43,273 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 15:01:43,273 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170645345] [2020-10-13 15:01:43,273 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 15:01:43,273 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:01:43,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 15:01:43,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:01:43,274 INFO L87 Difference]: Start difference. First operand 4431 states and 6257 transitions. Second operand 4 states. [2020-10-13 15:01:45,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:01:45,457 INFO L93 Difference]: Finished difference Result 9941 states and 14536 transitions. [2020-10-13 15:01:45,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 15:01:45,458 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 170 [2020-10-13 15:01:45,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:01:45,471 INFO L225 Difference]: With dead ends: 9941 [2020-10-13 15:01:45,471 INFO L226 Difference]: Without dead ends: 6423 [2020-10-13 15:01:45,477 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:01:45,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6423 states. [2020-10-13 15:01:45,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6423 to 5839. [2020-10-13 15:01:45,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5839 states. [2020-10-13 15:01:45,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5839 states to 5839 states and 8497 transitions. [2020-10-13 15:01:45,817 INFO L78 Accepts]: Start accepts. Automaton has 5839 states and 8497 transitions. Word has length 170 [2020-10-13 15:01:45,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:01:45,817 INFO L479 AbstractCegarLoop]: Abstraction has 5839 states and 8497 transitions. [2020-10-13 15:01:45,817 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 15:01:45,818 INFO L276 IsEmpty]: Start isEmpty. Operand 5839 states and 8497 transitions. [2020-10-13 15:01:45,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-13 15:01:45,822 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:01:45,822 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:01:45,823 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 15:01:45,823 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:01:45,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:01:45,823 INFO L82 PathProgramCache]: Analyzing trace with hash 1675757740, now seen corresponding path program 1 times [2020-10-13 15:01:45,823 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:01:45,824 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [867362337] [2020-10-13 15:01:45,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:01:45,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:01:45,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:45,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:45,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:45,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:46,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:46,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:46,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:46,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:46,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:46,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:46,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:46,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:49,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:49,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:49,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:49,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:49,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:50,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:50,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:01:50,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-13 15:01:50,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-13 15:01:50,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-13 15:01:50,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:01:50,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:01:50,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-13 15:01:50,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 15:01:50,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:01:51,126 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-13 15:01:51,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:01:51,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:01:51,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:51,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:01:51,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:01:51,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:01:51,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 15:01:51,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:01:51,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:01:51,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:01:51,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:01:51,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:01:51,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:01:51,161 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [867362337] [2020-10-13 15:01:51,161 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:01:51,161 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:01:51,161 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843526550] [2020-10-13 15:01:51,162 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:01:51,162 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:01:51,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:01:51,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:01:51,163 INFO L87 Difference]: Start difference. First operand 5839 states and 8497 transitions. Second operand 5 states. [2020-10-13 15:01:52,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:01:52,674 INFO L93 Difference]: Finished difference Result 7218 states and 10496 transitions. [2020-10-13 15:01:52,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:01:52,674 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 170 [2020-10-13 15:01:52,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:01:52,684 INFO L225 Difference]: With dead ends: 7218 [2020-10-13 15:01:52,684 INFO L226 Difference]: Without dead ends: 4528 [2020-10-13 15:01:52,690 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:01:52,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4528 states. [2020-10-13 15:01:53,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4528 to 4518. [2020-10-13 15:01:53,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4518 states. [2020-10-13 15:01:53,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4518 states to 4518 states and 6561 transitions. [2020-10-13 15:01:53,034 INFO L78 Accepts]: Start accepts. Automaton has 4518 states and 6561 transitions. Word has length 170 [2020-10-13 15:01:53,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:01:53,034 INFO L479 AbstractCegarLoop]: Abstraction has 4518 states and 6561 transitions. [2020-10-13 15:01:53,034 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:01:53,034 INFO L276 IsEmpty]: Start isEmpty. Operand 4518 states and 6561 transitions. [2020-10-13 15:01:53,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-10-13 15:01:53,038 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:01:53,039 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:01:53,039 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 15:01:53,039 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:01:53,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:01:53,039 INFO L82 PathProgramCache]: Analyzing trace with hash -549378815, now seen corresponding path program 1 times [2020-10-13 15:01:53,040 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:01:53,040 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [542772926] [2020-10-13 15:01:53,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:01:53,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:01:53,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:53,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:53,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:53,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:53,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:53,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:53,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:53,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:53,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:54,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:54,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:54,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:55,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:55,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:56,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:56,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:57,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:57,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:58,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:01:58,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-13 15:01:58,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-13 15:01:58,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 15:01:58,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:01:58,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:01:58,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-13 15:01:58,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 15:01:58,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:01:58,283 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-13 15:01:58,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:01:58,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:01:58,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:58,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:01:58,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:01:58,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:01:58,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 15:01:58,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:01:58,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:01:58,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:01:58,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:01:58,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:01:58,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:01:58,323 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [542772926] [2020-10-13 15:01:58,323 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:01:58,323 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 15:01:58,323 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894727294] [2020-10-13 15:01:58,324 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 15:01:58,324 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:01:58,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 15:01:58,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:01:58,324 INFO L87 Difference]: Start difference. First operand 4518 states and 6561 transitions. Second operand 4 states. [2020-10-13 15:02:00,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:02:00,373 INFO L93 Difference]: Finished difference Result 10546 states and 15839 transitions. [2020-10-13 15:02:00,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 15:02:00,374 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 172 [2020-10-13 15:02:00,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:02:00,389 INFO L225 Difference]: With dead ends: 10546 [2020-10-13 15:02:00,389 INFO L226 Difference]: Without dead ends: 6899 [2020-10-13 15:02:00,397 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:02:00,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6899 states. [2020-10-13 15:02:00,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6899 to 6408. [2020-10-13 15:02:00,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6408 states. [2020-10-13 15:02:00,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6408 states to 6408 states and 9552 transitions. [2020-10-13 15:02:00,977 INFO L78 Accepts]: Start accepts. Automaton has 6408 states and 9552 transitions. Word has length 172 [2020-10-13 15:02:00,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:02:00,978 INFO L479 AbstractCegarLoop]: Abstraction has 6408 states and 9552 transitions. [2020-10-13 15:02:00,978 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 15:02:00,978 INFO L276 IsEmpty]: Start isEmpty. Operand 6408 states and 9552 transitions. [2020-10-13 15:02:00,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-10-13 15:02:00,983 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:02:00,984 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:02:00,984 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 15:02:00,984 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:02:00,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:02:00,984 INFO L82 PathProgramCache]: Analyzing trace with hash -1988650749, now seen corresponding path program 1 times [2020-10-13 15:02:00,985 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:02:00,985 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [881986197] [2020-10-13 15:02:00,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:02:01,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:02:01,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:01,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:01,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:01,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:01,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:01,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:01,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:01,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:01,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:01,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:06,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:02:06,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-10-13 15:02:06,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-13 15:02:06,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 15:02:06,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:02:06,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 15:02:06,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-13 15:02:06,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-13 15:02:06,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:02:06,280 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-13 15:02:06,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:02:06,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:02:06,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:06,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:02:06,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:02:06,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:02:06,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 15:02:06,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:02:06,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:02:06,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:02:06,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:02:06,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:02:06,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:02:06,316 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [881986197] [2020-10-13 15:02:06,316 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:02:06,317 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 15:02:06,317 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367621395] [2020-10-13 15:02:06,317 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 15:02:06,318 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:02:06,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 15:02:06,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-13 15:02:06,318 INFO L87 Difference]: Start difference. First operand 6408 states and 9552 transitions. Second operand 7 states. [2020-10-13 15:02:06,561 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-13 15:02:10,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:02:10,678 INFO L93 Difference]: Finished difference Result 43679 states and 67209 transitions. [2020-10-13 15:02:10,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 15:02:10,678 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 173 [2020-10-13 15:02:10,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:02:10,727 INFO L225 Difference]: With dead ends: 43679 [2020-10-13 15:02:10,727 INFO L226 Difference]: Without dead ends: 37968 [2020-10-13 15:02:10,743 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2020-10-13 15:02:10,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37968 states. [2020-10-13 15:02:13,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37968 to 33033. [2020-10-13 15:02:13,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33033 states. [2020-10-13 15:02:13,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33033 states to 33033 states and 50471 transitions. [2020-10-13 15:02:13,687 INFO L78 Accepts]: Start accepts. Automaton has 33033 states and 50471 transitions. Word has length 173 [2020-10-13 15:02:13,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:02:13,688 INFO L479 AbstractCegarLoop]: Abstraction has 33033 states and 50471 transitions. [2020-10-13 15:02:13,688 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 15:02:13,688 INFO L276 IsEmpty]: Start isEmpty. Operand 33033 states and 50471 transitions. [2020-10-13 15:02:13,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-10-13 15:02:13,697 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:02:13,697 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:02:13,697 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 15:02:13,697 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:02:13,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:02:13,697 INFO L82 PathProgramCache]: Analyzing trace with hash -790855768, now seen corresponding path program 1 times [2020-10-13 15:02:13,698 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:02:13,698 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1448088489] [2020-10-13 15:02:13,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:02:13,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:02:13,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:13,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:13,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:13,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:13,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:13,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:13,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:14,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:15,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:17,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:17,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:17,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:17,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:17,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:18,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:02:18,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-10-13 15:02:18,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-13 15:02:18,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-13 15:02:18,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:02:18,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:02:18,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 15:02:18,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-13 15:02:18,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:02:18,962 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-13 15:02:18,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:02:18,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:02:18,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:18,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:02:18,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:02:18,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:02:18,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 15:02:18,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:02:18,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:02:18,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:02:18,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 15:02:18,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:02:19,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:02:19,017 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1448088489] [2020-10-13 15:02:19,017 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:02:19,018 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:02:19,018 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139760791] [2020-10-13 15:02:19,018 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 15:02:19,018 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:02:19,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 15:02:19,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:02:19,019 INFO L87 Difference]: Start difference. First operand 33033 states and 50471 transitions. Second operand 6 states. [2020-10-13 15:02:19,260 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-13 15:02:24,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:02:24,514 INFO L93 Difference]: Finished difference Result 90795 states and 140705 transitions. [2020-10-13 15:02:24,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 15:02:24,515 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 173 [2020-10-13 15:02:24,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:02:24,605 INFO L225 Difference]: With dead ends: 90795 [2020-10-13 15:02:24,606 INFO L226 Difference]: Without dead ends: 59722 [2020-10-13 15:02:24,661 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-13 15:02:24,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59722 states. [2020-10-13 15:02:27,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59722 to 39837. [2020-10-13 15:02:27,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39837 states. [2020-10-13 15:02:27,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39837 states to 39837 states and 61506 transitions. [2020-10-13 15:02:27,511 INFO L78 Accepts]: Start accepts. Automaton has 39837 states and 61506 transitions. Word has length 173 [2020-10-13 15:02:27,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:02:27,511 INFO L479 AbstractCegarLoop]: Abstraction has 39837 states and 61506 transitions. [2020-10-13 15:02:27,511 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 15:02:27,511 INFO L276 IsEmpty]: Start isEmpty. Operand 39837 states and 61506 transitions. [2020-10-13 15:02:27,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-10-13 15:02:27,519 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:02:27,519 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:02:27,519 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 15:02:27,519 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:02:27,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:02:27,519 INFO L82 PathProgramCache]: Analyzing trace with hash -415918488, now seen corresponding path program 1 times [2020-10-13 15:02:27,520 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:02:27,520 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1232516647] [2020-10-13 15:02:27,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:02:27,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:02:27,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:27,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:27,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:27,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:27,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:27,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:27,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:28,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:29,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:29,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:30,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:30,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:31,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:32,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:32,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:32,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:32,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:32,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:02:32,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-10-13 15:02:32,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-13 15:02:32,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 15:02:32,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:02:32,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:02:32,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 15:02:32,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-13 15:02:32,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:02:32,834 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-13 15:02:32,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:02:32,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:02:32,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:32,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:02:32,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:02:32,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:02:32,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 15:02:32,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:02:32,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:02:32,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:02:32,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:02:32,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:02:32,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:02:32,880 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1232516647] [2020-10-13 15:02:32,881 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:02:32,881 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:02:32,881 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276417933] [2020-10-13 15:02:32,883 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:02:32,883 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:02:32,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:02:32,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:02:32,884 INFO L87 Difference]: Start difference. First operand 39837 states and 61506 transitions. Second operand 5 states. [2020-10-13 15:02:39,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:02:39,375 INFO L93 Difference]: Finished difference Result 95534 states and 147739 transitions. [2020-10-13 15:02:39,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:02:39,376 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 173 [2020-10-13 15:02:39,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:02:39,442 INFO L225 Difference]: With dead ends: 95534 [2020-10-13 15:02:39,442 INFO L226 Difference]: Without dead ends: 56717 [2020-10-13 15:02:39,489 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:02:39,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56717 states. [2020-10-13 15:02:43,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56717 to 56715. [2020-10-13 15:02:43,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56715 states. [2020-10-13 15:02:43,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56715 states to 56715 states and 86389 transitions. [2020-10-13 15:02:43,630 INFO L78 Accepts]: Start accepts. Automaton has 56715 states and 86389 transitions. Word has length 173 [2020-10-13 15:02:43,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:02:43,630 INFO L479 AbstractCegarLoop]: Abstraction has 56715 states and 86389 transitions. [2020-10-13 15:02:43,631 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:02:43,631 INFO L276 IsEmpty]: Start isEmpty. Operand 56715 states and 86389 transitions. [2020-10-13 15:02:43,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-10-13 15:02:43,641 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:02:43,641 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:02:43,641 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 15:02:43,641 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:02:43,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:02:43,641 INFO L82 PathProgramCache]: Analyzing trace with hash -1317075204, now seen corresponding path program 1 times [2020-10-13 15:02:43,642 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:02:43,642 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1131848558] [2020-10-13 15:02:43,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:02:43,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:02:43,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:43,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:43,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:43,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:43,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:43,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:44,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:44,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:44,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:44,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:45,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:45,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:48,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:48,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:48,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:48,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:48,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:02:48,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-10-13 15:02:48,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-13 15:02:48,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-13 15:02:48,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:02:48,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:02:48,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-13 15:02:48,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-13 15:02:48,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:02:48,936 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-13 15:02:48,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:02:48,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:02:48,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:48,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:02:48,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:02:48,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:02:48,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 15:02:48,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:02:48,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:02:48,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:02:48,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:02:48,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:02:48,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:02:48,983 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1131848558] [2020-10-13 15:02:48,983 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:02:48,983 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 15:02:48,983 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978179008] [2020-10-13 15:02:48,984 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 15:02:48,984 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:02:48,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 15:02:48,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:02:48,984 INFO L87 Difference]: Start difference. First operand 56715 states and 86389 transitions. Second operand 4 states. [2020-10-13 15:03:00,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:03:00,320 INFO L93 Difference]: Finished difference Result 153421 states and 233643 transitions. [2020-10-13 15:03:00,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 15:03:00,321 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 175 [2020-10-13 15:03:00,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:03:00,469 INFO L225 Difference]: With dead ends: 153421 [2020-10-13 15:03:00,469 INFO L226 Difference]: Without dead ends: 98364 [2020-10-13 15:03:00,525 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:03:00,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98364 states. [2020-10-13 15:03:09,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98364 to 98362. [2020-10-13 15:03:09,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98362 states. [2020-10-13 15:03:09,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98362 states to 98362 states and 147731 transitions. [2020-10-13 15:03:09,629 INFO L78 Accepts]: Start accepts. Automaton has 98362 states and 147731 transitions. Word has length 175 [2020-10-13 15:03:09,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:03:09,630 INFO L479 AbstractCegarLoop]: Abstraction has 98362 states and 147731 transitions. [2020-10-13 15:03:09,630 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 15:03:09,630 INFO L276 IsEmpty]: Start isEmpty. Operand 98362 states and 147731 transitions. [2020-10-13 15:03:09,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-10-13 15:03:09,649 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:03:09,650 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:03:09,650 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-13 15:03:09,650 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:03:09,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:03:09,651 INFO L82 PathProgramCache]: Analyzing trace with hash 866303167, now seen corresponding path program 1 times [2020-10-13 15:03:09,651 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:03:09,651 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1471981888] [2020-10-13 15:03:09,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:03:09,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:03:09,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:09,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:09,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:09,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:09,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:09,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:09,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:10,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:10,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:11,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:12,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:14,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:03:14,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-10-13 15:03:14,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-13 15:03:14,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-13 15:03:14,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:03:14,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:03:14,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 15:03:14,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 15:03:14,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:03:14,927 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-13 15:03:14,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:03:14,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:03:14,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:14,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:03:14,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:03:14,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:03:14,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 15:03:14,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:03:14,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:03:14,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:03:14,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:03:14,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:03:14,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:03:14,961 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1471981888] [2020-10-13 15:03:14,961 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:03:14,961 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:03:14,961 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936707977] [2020-10-13 15:03:14,962 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:03:14,962 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:03:14,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:03:14,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:03:14,963 INFO L87 Difference]: Start difference. First operand 98362 states and 147731 transitions. Second operand 5 states. [2020-10-13 15:03:24,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:03:24,180 INFO L93 Difference]: Finished difference Result 186260 states and 279512 transitions. [2020-10-13 15:03:24,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:03:24,180 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 175 [2020-10-13 15:03:24,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:03:24,319 INFO L225 Difference]: With dead ends: 186260 [2020-10-13 15:03:24,320 INFO L226 Difference]: Without dead ends: 98926 [2020-10-13 15:03:24,376 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:03:24,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98926 states. [2020-10-13 15:03:34,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98926 to 98884. [2020-10-13 15:03:34,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98884 states. [2020-10-13 15:03:34,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98884 states to 98884 states and 147169 transitions. [2020-10-13 15:03:34,952 INFO L78 Accepts]: Start accepts. Automaton has 98884 states and 147169 transitions. Word has length 175 [2020-10-13 15:03:34,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:03:34,952 INFO L479 AbstractCegarLoop]: Abstraction has 98884 states and 147169 transitions. [2020-10-13 15:03:34,952 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:03:34,952 INFO L276 IsEmpty]: Start isEmpty. Operand 98884 states and 147169 transitions. [2020-10-13 15:03:34,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-10-13 15:03:34,967 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:03:34,968 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:03:34,968 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-13 15:03:34,968 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:03:34,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:03:34,968 INFO L82 PathProgramCache]: Analyzing trace with hash 1801521148, now seen corresponding path program 1 times [2020-10-13 15:03:34,968 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:03:34,968 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [680709842] [2020-10-13 15:03:34,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:03:34,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:03:34,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:35,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:35,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:35,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:35,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:37,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:38,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:38,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:38,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:39,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:03:39,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-10-13 15:03:39,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 15:03:39,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-13 15:03:39,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:03:39,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:03:39,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-13 15:03:39,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 15:03:39,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:03:40,219 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-13 15:03:40,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:03:40,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:03:40,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:40,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:03:40,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:03:40,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:03:40,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 15:03:40,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:03:40,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:03:40,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:03:40,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:03:40,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:03:40,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:03:40,253 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [680709842] [2020-10-13 15:03:40,253 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:03:40,253 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 15:03:40,253 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978857326] [2020-10-13 15:03:40,254 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 15:03:40,254 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:03:40,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 15:03:40,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:03:40,254 INFO L87 Difference]: Start difference. First operand 98884 states and 147169 transitions. Second operand 4 states. [2020-10-13 15:03:51,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:03:51,340 INFO L93 Difference]: Finished difference Result 137659 states and 204422 transitions. [2020-10-13 15:03:51,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 15:03:51,341 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 176 [2020-10-13 15:03:51,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:03:51,508 INFO L225 Difference]: With dead ends: 137659 [2020-10-13 15:03:51,508 INFO L226 Difference]: Without dead ends: 126533 [2020-10-13 15:03:51,543 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:03:51,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126533 states.