/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/pals_opt-floodmax.3.3.ufo.BOUNDED-6.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 13:36:33,485 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 13:36:33,488 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 13:36:33,533 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 13:36:33,534 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 13:36:33,542 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 13:36:33,544 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 13:36:33,548 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 13:36:33,551 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 13:36:33,555 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 13:36:33,555 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 13:36:33,556 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 13:36:33,557 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 13:36:33,560 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 13:36:33,564 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 13:36:33,566 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 13:36:33,569 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 13:36:33,570 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 13:36:33,572 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 13:36:33,573 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 13:36:33,574 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 13:36:33,575 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 13:36:33,576 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 13:36:33,577 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 13:36:33,579 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 13:36:33,579 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 13:36:33,580 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 13:36:33,580 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 13:36:33,581 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 13:36:33,582 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 13:36:33,582 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 13:36:33,583 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 13:36:33,583 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 13:36:33,584 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 13:36:33,585 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 13:36:33,585 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 13:36:33,586 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 13:36:33,586 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 13:36:33,586 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 13:36:33,587 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 13:36:33,588 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 13:36:33,589 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 13:36:33,613 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 13:36:33,614 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 13:36:33,615 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 13:36:33,615 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 13:36:33,615 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 13:36:33,616 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 13:36:33,616 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 13:36:33,616 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 13:36:33,616 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 13:36:33,617 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 13:36:33,617 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 13:36:33,617 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 13:36:33,617 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 13:36:33,617 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 13:36:33,618 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 13:36:33,618 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 13:36:33,618 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 13:36:33,618 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 13:36:33,618 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 13:36:33,619 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 13:36:33,619 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 13:36:33,619 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 13:36:33,619 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 13:36:33,619 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 13:36:33,620 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 13:36:33,620 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 13:36:33,620 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 13:36:33,620 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 13:36:33,620 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 13:36:33,621 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 13:36:33,914 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 13:36:33,928 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 13:36:33,931 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 13:36:33,933 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 13:36:33,933 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 13:36:33,934 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.3.3.ufo.BOUNDED-6.pals.c [2020-10-13 13:36:34,003 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1cebe98e3/a8fdbc36c0024b4799c8255ca276da60/FLAG9ddff95cc [2020-10-13 13:36:34,544 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 13:36:34,545 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.3.3.ufo.BOUNDED-6.pals.c [2020-10-13 13:36:34,560 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1cebe98e3/a8fdbc36c0024b4799c8255ca276da60/FLAG9ddff95cc [2020-10-13 13:36:34,855 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1cebe98e3/a8fdbc36c0024b4799c8255ca276da60 [2020-10-13 13:36:34,864 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 13:36:34,865 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 13:36:34,867 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 13:36:34,867 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 13:36:34,871 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 13:36:34,872 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:36:34" (1/1) ... [2020-10-13 13:36:34,875 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11967da3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:36:34, skipping insertion in model container [2020-10-13 13:36:34,876 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:36:34" (1/1) ... [2020-10-13 13:36:34,884 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 13:36:34,942 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 13:36:35,237 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 13:36:35,248 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 13:36:35,419 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 13:36:35,440 INFO L208 MainTranslator]: Completed translation [2020-10-13 13:36:35,440 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:36:35 WrapperNode [2020-10-13 13:36:35,440 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 13:36:35,441 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 13:36:35,442 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 13:36:35,442 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 13:36:35,459 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:36:35" (1/1) ... [2020-10-13 13:36:35,460 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:36:35" (1/1) ... [2020-10-13 13:36:35,471 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:36:35" (1/1) ... [2020-10-13 13:36:35,471 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:36:35" (1/1) ... [2020-10-13 13:36:35,490 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:36:35" (1/1) ... [2020-10-13 13:36:35,506 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:36:35" (1/1) ... [2020-10-13 13:36:35,510 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:36:35" (1/1) ... [2020-10-13 13:36:35,517 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 13:36:35,518 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 13:36:35,518 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 13:36:35,518 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 13:36:35,520 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:36:35" (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 13:36:35,599 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 13:36:35,600 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 13:36:35,600 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-13 13:36:35,600 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2020-10-13 13:36:35,600 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2020-10-13 13:36:35,600 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2020-10-13 13:36:35,601 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-10-13 13:36:35,601 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-10-13 13:36:35,601 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 13:36:35,601 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2020-10-13 13:36:35,601 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 13:36:35,601 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-13 13:36:35,602 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-13 13:36:35,602 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-13 13:36:35,602 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-13 13:36:35,602 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-13 13:36:35,602 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-13 13:36:35,602 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-13 13:36:35,603 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-13 13:36:35,603 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-13 13:36:35,603 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-13 13:36:35,603 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-13 13:36:35,603 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-13 13:36:35,604 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 13:36:35,604 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 13:36:35,604 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 13:36:36,449 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 13:36:36,449 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 13:36:36,456 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:36:36 BoogieIcfgContainer [2020-10-13 13:36:36,456 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 13:36:36,458 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 13:36:36,458 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 13:36:36,461 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 13:36:36,462 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 01:36:34" (1/3) ... [2020-10-13 13:36:36,463 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@147b7149 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 01:36:36, skipping insertion in model container [2020-10-13 13:36:36,463 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:36:35" (2/3) ... [2020-10-13 13:36:36,463 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@147b7149 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 01:36:36, skipping insertion in model container [2020-10-13 13:36:36,464 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:36:36" (3/3) ... [2020-10-13 13:36:36,466 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.3.ufo.BOUNDED-6.pals.c [2020-10-13 13:36:36,478 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 13:36:36,488 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 13:36:36,503 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 13:36:36,530 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 13:36:36,530 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 13:36:36,530 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 13:36:36,530 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 13:36:36,531 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 13:36:36,531 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 13:36:36,531 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 13:36:36,531 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 13:36:36,559 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states. [2020-10-13 13:36:36,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-13 13:36:36,584 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:36:36,585 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] [2020-10-13 13:36:36,586 INFO L427 AbstractCegarLoop]: === Iteration 1 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:36:36,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:36:36,593 INFO L82 PathProgramCache]: Analyzing trace with hash 1825328611, now seen corresponding path program 1 times [2020-10-13 13:36:36,603 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:36:36,604 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [817845220] [2020-10-13 13:36:36,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:36:36,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:36:37,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:37,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:36:37,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-13 13:36:37,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:36:37,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 409 [2020-10-13 13:36:37,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:36:37,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:36:37,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-13 13:36:37,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:36:37,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 13:36:37,677 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-13 13:36:37,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:36:37,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:36:37,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:37,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:36:37,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:36:37,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:36:37,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 13:36:37,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:36:37,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:36:37,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:36:37,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:36:37,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:36:37,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:36:37,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:36:37,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:37,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:36:37,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 13:36:37,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:36:37,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 13:36:37,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:36:37,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:36:37,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:36:37,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:36:37,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:36:37,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-13 13:36:37,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:36:37,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:37,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:36:37,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:36:37,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:36:37,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:36:37,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:36:37,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:36:37,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-13 13:36:37,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:36:37,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:36:37,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-13 13:36:37,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:36:37,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:37,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:36:37,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:36:37,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:36:37,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 13:36:37,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:36:37,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:36:37,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:36:37,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:36:37,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:36:37,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-13 13:36:37,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:36:37,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:37,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:36:37,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:36:37,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:36:37,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 13:36:37,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:36:37,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:36:37,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:36:37,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:36:37,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:36:37,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-13 13:36:37,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:36:37,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:37,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:36:37,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:36:37,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:36:37,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 13:36:37,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:36:37,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:36:37,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:36:37,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:36:37,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:36:37,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 13:36:37,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:36:37,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:37,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:36:37,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:36:37,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:36:37,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 13:36:37,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:36:37,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:36:37,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:36:37,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:36:37,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:36:37,997 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 13:36:37,997 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [817845220] [2020-10-13 13:36:38,001 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:36:38,002 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 13:36:38,003 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724294307] [2020-10-13 13:36:38,013 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 13:36:38,014 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:36:38,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 13:36:38,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-13 13:36:38,035 INFO L87 Difference]: Start difference. First operand 174 states. Second operand 6 states. [2020-10-13 13:36:39,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:36:39,444 INFO L93 Difference]: Finished difference Result 294 states and 465 transitions. [2020-10-13 13:36:39,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 13:36:39,447 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 65 [2020-10-13 13:36:39,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:36:39,460 INFO L225 Difference]: With dead ends: 294 [2020-10-13 13:36:39,460 INFO L226 Difference]: Without dead ends: 184 [2020-10-13 13:36:39,465 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-13 13:36:39,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2020-10-13 13:36:39,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 169. [2020-10-13 13:36:39,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2020-10-13 13:36:39,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 271 transitions. [2020-10-13 13:36:39,528 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 271 transitions. Word has length 65 [2020-10-13 13:36:39,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:36:39,529 INFO L479 AbstractCegarLoop]: Abstraction has 169 states and 271 transitions. [2020-10-13 13:36:39,529 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 13:36:39,529 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 271 transitions. [2020-10-13 13:36:39,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-13 13:36:39,533 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:36:39,533 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] [2020-10-13 13:36:39,534 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 13:36:39,534 INFO L427 AbstractCegarLoop]: === Iteration 2 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:36:39,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:36:39,535 INFO L82 PathProgramCache]: Analyzing trace with hash 795969313, now seen corresponding path program 1 times [2020-10-13 13:36:39,535 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:36:39,535 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1656193578] [2020-10-13 13:36:39,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:36:39,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:36:39,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:40,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:36:40,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-13 13:36:40,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:36:40,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 691 [2020-10-13 13:36:40,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:36:40,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 13:36:40,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-13 13:36:40,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 13:36:40,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:36:40,522 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-13 13:36:40,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:36:40,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:36:40,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:40,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:36:40,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:36:40,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:36:40,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 13:36:40,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:36:40,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:36:40,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:36:40,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:36:40,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:36:40,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:36:40,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:36:40,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:40,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:36:40,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 13:36:40,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:36:40,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-13 13:36:40,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:36:40,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:36:40,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:36:40,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 13:36:40,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:36:40,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-13 13:36:40,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:36:40,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:40,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:36:40,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:36:40,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:36:40,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 13:36:40,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:36:40,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:36:40,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 13:36:40,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:36:40,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 13:36:40,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-13 13:36:40,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:36:40,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:40,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:36:40,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:36:40,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:36:40,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 13:36:40,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:36:40,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:36:40,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:36:40,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:36:40,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 13:36:40,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-13 13:36:40,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:36:40,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:40,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:36:40,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:36:40,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:36:40,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 13:36:40,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:36:40,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:36:40,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:36:40,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:36:40,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:36:41,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-13 13:36:41,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:36:41,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:41,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:36:41,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:36:41,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:36:41,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 13:36:41,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:36:41,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:36:41,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:36:41,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:36:41,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:36:41,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 13:36:41,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:36:41,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:41,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:36:41,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:36:41,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:36:41,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:36:41,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:36:41,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:36:41,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:36:41,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:36:41,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:36:41,057 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 13:36:41,058 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1656193578] [2020-10-13 13:36:41,059 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:36:41,059 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-13 13:36:41,059 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932053150] [2020-10-13 13:36:41,062 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 13:36:41,062 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:36:41,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 13:36:41,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-10-13 13:36:41,063 INFO L87 Difference]: Start difference. First operand 169 states and 271 transitions. Second operand 12 states. [2020-10-13 13:36:41,589 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-13 13:36:41,789 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-13 13:36:42,087 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-13 13:36:42,285 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-13 13:36:43,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:36:43,868 INFO L93 Difference]: Finished difference Result 296 states and 467 transitions. [2020-10-13 13:36:43,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 13:36:43,870 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 65 [2020-10-13 13:36:43,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:36:43,874 INFO L225 Difference]: With dead ends: 296 [2020-10-13 13:36:43,875 INFO L226 Difference]: Without dead ends: 193 [2020-10-13 13:36:43,876 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2020-10-13 13:36:43,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2020-10-13 13:36:43,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 169. [2020-10-13 13:36:43,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2020-10-13 13:36:43,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 241 transitions. [2020-10-13 13:36:43,903 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 241 transitions. Word has length 65 [2020-10-13 13:36:43,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:36:43,903 INFO L479 AbstractCegarLoop]: Abstraction has 169 states and 241 transitions. [2020-10-13 13:36:43,904 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 13:36:43,904 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 241 transitions. [2020-10-13 13:36:43,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-13 13:36:43,909 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:36:43,910 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] [2020-10-13 13:36:43,910 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 13:36:43,910 INFO L427 AbstractCegarLoop]: === Iteration 3 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:36:43,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:36:43,911 INFO L82 PathProgramCache]: Analyzing trace with hash 483350775, now seen corresponding path program 1 times [2020-10-13 13:36:43,911 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:36:43,911 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1173174735] [2020-10-13 13:36:43,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:36:43,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:36:44,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:44,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:44,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:47,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:48,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:36:48,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-13 13:36:48,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 13:36:48,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-13 13:36:48,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:36:48,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:36:48,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 13:36:48,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-13 13:36:48,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 13:36:49,246 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-13 13:36:49,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:36:49,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:36:49,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:49,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:36:49,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:36:49,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:36:49,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 13:36:49,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:36:49,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:36:49,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:36:49,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:36:49,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:36:49,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:36:49,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:36:49,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:49,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:36:49,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-13 13:36:49,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:36:49,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-13 13:36:49,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:36:49,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:36:49,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:36:49,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 13:36:49,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:36:49,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 13:36:49,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:36:49,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:49,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:36:49,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:36:49,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:36:49,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:36:49,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:36:49,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:36:49,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:36:49,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:36:49,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:36:49,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-13 13:36:49,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:36:49,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:49,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:36:49,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:36:49,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:36:49,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 13:36:49,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:36:49,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:36:49,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:36:49,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 13:36:49,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:36:49,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-13 13:36:49,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:36:49,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:49,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:36:49,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:36:49,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:36:49,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 13:36:49,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:36:49,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:36:49,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:36:49,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:36:49,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:36:49,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-13 13:36:49,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:36:49,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:49,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:36:49,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:36:49,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:36:49,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 13:36:49,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:36:49,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:36:49,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:36:49,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:36:49,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:36:49,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-13 13:36:49,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:36:49,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:49,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:36:49,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:36:49,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:36:49,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:36:49,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:36:49,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:36:49,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:36:49,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:36:49,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:36:49,669 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 13:36:49,670 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1173174735] [2020-10-13 13:36:49,670 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:36:49,670 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-13 13:36:49,671 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255991423] [2020-10-13 13:36:49,671 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 13:36:49,672 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:36:49,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 13:36:49,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-13 13:36:49,673 INFO L87 Difference]: Start difference. First operand 169 states and 241 transitions. Second operand 9 states. [2020-10-13 13:36:49,932 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-10-13 13:36:51,811 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-10-13 13:36:52,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:36:52,262 INFO L93 Difference]: Finished difference Result 394 states and 591 transitions. [2020-10-13 13:36:52,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 13:36:52,263 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 94 [2020-10-13 13:36:52,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:36:52,277 INFO L225 Difference]: With dead ends: 394 [2020-10-13 13:36:52,277 INFO L226 Difference]: Without dead ends: 297 [2020-10-13 13:36:52,284 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2020-10-13 13:36:52,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2020-10-13 13:36:52,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 259. [2020-10-13 13:36:52,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2020-10-13 13:36:52,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 374 transitions. [2020-10-13 13:36:52,392 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 374 transitions. Word has length 94 [2020-10-13 13:36:52,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:36:52,395 INFO L479 AbstractCegarLoop]: Abstraction has 259 states and 374 transitions. [2020-10-13 13:36:52,395 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 13:36:52,395 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 374 transitions. [2020-10-13 13:36:52,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-13 13:36:52,407 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:36:52,408 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] [2020-10-13 13:36:52,408 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 13:36:52,409 INFO L427 AbstractCegarLoop]: === Iteration 4 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:36:52,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:36:52,410 INFO L82 PathProgramCache]: Analyzing trace with hash -1717142036, now seen corresponding path program 1 times [2020-10-13 13:36:52,410 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:36:52,411 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1056416091] [2020-10-13 13:36:52,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:36:52,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:36:52,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:52,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:52,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:52,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:57,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:36:57,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-13 13:36:57,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 13:36:57,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-13 13:36:57,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:36:57,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:36:57,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-13 13:36:57,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-13 13:36:57,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:36:57,734 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-13 13:36:57,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:36:57,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:36:57,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:57,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:36:57,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:36:57,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:36:57,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 13:36:57,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:36:57,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:36:57,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:36:57,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:36:57,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:36:57,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:36:57,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:36:57,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:57,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:36:57,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-13 13:36:57,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:36:57,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-13 13:36:57,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:36:57,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:36:57,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:36:57,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 13:36:57,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:36:57,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 13:36:57,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:36:57,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:57,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:36:57,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:36:57,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:36:57,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:36:57,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:36:57,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:36:57,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:36:57,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:36:57,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:36:57,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-13 13:36:57,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:36:57,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:57,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:36:57,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:36:57,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:36:57,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 13:36:57,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:36:57,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:36:57,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:36:57,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 13:36:57,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 13:36:57,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-13 13:36:57,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:36:57,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:58,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:36:58,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:36:58,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:36:58,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 13:36:58,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:36:58,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:36:58,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:36:58,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 13:36:58,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:36:58,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-13 13:36:58,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:36:58,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:58,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:36:58,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:36:58,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:36:58,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:36:58,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:36:58,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:36:58,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:36:58,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:36:58,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:36:58,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-13 13:36:58,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:36:58,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:58,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:36:58,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:36:58,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:36:58,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:36:58,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:36:58,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:36:58,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:36:58,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:36:58,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:36:58,117 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 13:36:58,117 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1056416091] [2020-10-13 13:36:58,118 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:36:58,118 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-13 13:36:58,118 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263714250] [2020-10-13 13:36:58,120 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 13:36:58,120 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:36:58,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 13:36:58,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-13 13:36:58,122 INFO L87 Difference]: Start difference. First operand 259 states and 374 transitions. Second operand 9 states. [2020-10-13 13:36:58,307 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-10-13 13:37:00,246 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-10-13 13:37:00,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:37:00,421 INFO L93 Difference]: Finished difference Result 687 states and 1024 transitions. [2020-10-13 13:37:00,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 13:37:00,423 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 96 [2020-10-13 13:37:00,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:37:00,428 INFO L225 Difference]: With dead ends: 687 [2020-10-13 13:37:00,428 INFO L226 Difference]: Without dead ends: 500 [2020-10-13 13:37:00,432 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2020-10-13 13:37:00,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2020-10-13 13:37:00,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 432. [2020-10-13 13:37:00,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 432 states. [2020-10-13 13:37:00,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432 states to 432 states and 633 transitions. [2020-10-13 13:37:00,509 INFO L78 Accepts]: Start accepts. Automaton has 432 states and 633 transitions. Word has length 96 [2020-10-13 13:37:00,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:37:00,511 INFO L479 AbstractCegarLoop]: Abstraction has 432 states and 633 transitions. [2020-10-13 13:37:00,511 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 13:37:00,512 INFO L276 IsEmpty]: Start isEmpty. Operand 432 states and 633 transitions. [2020-10-13 13:37:00,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-13 13:37:00,514 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:37:00,514 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] [2020-10-13 13:37:00,514 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 13:37:00,514 INFO L427 AbstractCegarLoop]: === Iteration 5 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:37:00,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:37:00,515 INFO L82 PathProgramCache]: Analyzing trace with hash -2041666057, now seen corresponding path program 1 times [2020-10-13 13:37:00,515 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:37:00,515 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [48990969] [2020-10-13 13:37:00,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:37:00,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:00,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:00,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:00,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:00,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:00,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:05,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:05,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-13 13:37:05,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 13:37:05,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 13:37:05,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:05,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:37:05,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-13 13:37:05,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-13 13:37:05,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:05,761 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-13 13:37:05,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:37:05,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:05,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:05,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:05,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:37:05,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:05,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 13:37:05,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:05,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:37:05,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:37:05,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:37:05,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:05,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:37:05,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:05,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:05,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:05,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-13 13:37:05,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:05,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-13 13:37:05,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:05,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:37:05,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:37:05,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 13:37:05,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:05,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 13:37:05,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:05,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:05,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:05,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:37:05,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:05,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:37:05,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:05,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:37:05,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:37:05,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:37:05,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:05,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-13 13:37:05,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:05,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:05,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:05,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:37:05,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:05,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 13:37:05,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:05,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:37:05,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:37:05,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 13:37:05,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:05,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-13 13:37:05,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:05,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:05,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:05,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:37:05,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:05,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 13:37:05,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:05,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:37:05,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:37:05,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 13:37:05,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:05,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-13 13:37:05,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:05,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:05,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:05,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:37:05,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:05,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 13:37:05,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:05,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:37:05,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:37:05,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 13:37:05,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:06,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-13 13:37:06,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:06,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:06,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:06,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:37:06,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:06,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:37:06,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:06,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:37:06,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:37:06,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:37:06,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:06,025 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 13:37:06,025 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [48990969] [2020-10-13 13:37:06,025 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:37:06,025 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-13 13:37:06,026 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398791009] [2020-10-13 13:37:06,027 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 13:37:06,027 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:37:06,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 13:37:06,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-13 13:37:06,028 INFO L87 Difference]: Start difference. First operand 432 states and 633 transitions. Second operand 9 states. [2020-10-13 13:37:06,207 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-10-13 13:37:08,256 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-10-13 13:37:08,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:37:08,453 INFO L93 Difference]: Finished difference Result 1260 states and 1883 transitions. [2020-10-13 13:37:08,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 13:37:08,458 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 98 [2020-10-13 13:37:08,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:37:08,464 INFO L225 Difference]: With dead ends: 1260 [2020-10-13 13:37:08,465 INFO L226 Difference]: Without dead ends: 900 [2020-10-13 13:37:08,467 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2020-10-13 13:37:08,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 900 states. [2020-10-13 13:37:08,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 900 to 766. [2020-10-13 13:37:08,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 766 states. [2020-10-13 13:37:08,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 766 states to 766 states and 1127 transitions. [2020-10-13 13:37:08,541 INFO L78 Accepts]: Start accepts. Automaton has 766 states and 1127 transitions. Word has length 98 [2020-10-13 13:37:08,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:37:08,541 INFO L479 AbstractCegarLoop]: Abstraction has 766 states and 1127 transitions. [2020-10-13 13:37:08,541 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 13:37:08,542 INFO L276 IsEmpty]: Start isEmpty. Operand 766 states and 1127 transitions. [2020-10-13 13:37:08,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-13 13:37:08,544 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:37:08,544 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:37:08,544 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 13:37:08,544 INFO L427 AbstractCegarLoop]: === Iteration 6 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:37:08,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:37:08,545 INFO L82 PathProgramCache]: Analyzing trace with hash 554883052, now seen corresponding path program 1 times [2020-10-13 13:37:08,545 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:37:08,545 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1772598645] [2020-10-13 13:37:08,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:37:08,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:08,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:08,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:08,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:08,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:08,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:09,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:09,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:13,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:13,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-13 13:37:13,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 13:37:13,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-13 13:37:13,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:13,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:37:13,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 13:37:13,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-13 13:37:13,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:13,806 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-13 13:37:13,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:37:13,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:13,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:13,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:13,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:37:13,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:13,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 13:37:13,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:13,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:37:13,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:37:13,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:37:13,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:13,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:37:13,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:13,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:13,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:13,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-13 13:37:13,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:13,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-13 13:37:13,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:13,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:37:13,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:37:13,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 13:37:13,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:13,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 13:37:13,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:13,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:13,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:13,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:37:13,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:13,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:37:13,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:13,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:37:13,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:37:13,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:37:13,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:13,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-13 13:37:13,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:13,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:13,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:13,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:37:13,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:13,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 13:37:13,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:13,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:37:13,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 13:37:13,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:37:13,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:14,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-13 13:37:14,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:14,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:14,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:14,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:37:14,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:14,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:37:14,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:14,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:37:14,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 13:37:14,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:37:14,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:14,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-13 13:37:14,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:14,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:14,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:14,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:37:14,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:14,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:37:14,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:14,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:37:14,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 13:37:14,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:37:14,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:14,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-13 13:37:14,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:14,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:14,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:14,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:37:14,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:14,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:37:14,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:14,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:37:14,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:37:14,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:37:14,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:14,091 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 13:37:14,092 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1772598645] [2020-10-13 13:37:14,092 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:37:14,092 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-13 13:37:14,092 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909938152] [2020-10-13 13:37:14,093 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 13:37:14,093 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:37:14,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 13:37:14,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-13 13:37:14,094 INFO L87 Difference]: Start difference. First operand 766 states and 1127 transitions. Second operand 9 states. [2020-10-13 13:37:14,280 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-13 13:37:14,462 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-10-13 13:37:14,637 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-13 13:37:14,815 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-13 13:37:15,560 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-13 13:37:17,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:37:17,534 INFO L93 Difference]: Finished difference Result 2452 states and 3658 transitions. [2020-10-13 13:37:17,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-13 13:37:17,535 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 100 [2020-10-13 13:37:17,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:37:17,551 INFO L225 Difference]: With dead ends: 2452 [2020-10-13 13:37:17,551 INFO L226 Difference]: Without dead ends: 1700 [2020-10-13 13:37:17,555 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2020-10-13 13:37:17,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1700 states. [2020-10-13 13:37:17,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1700 to 1490. [2020-10-13 13:37:17,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1490 states. [2020-10-13 13:37:17,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1490 states to 1490 states and 2161 transitions. [2020-10-13 13:37:17,718 INFO L78 Accepts]: Start accepts. Automaton has 1490 states and 2161 transitions. Word has length 100 [2020-10-13 13:37:17,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:37:17,720 INFO L479 AbstractCegarLoop]: Abstraction has 1490 states and 2161 transitions. [2020-10-13 13:37:17,721 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 13:37:17,721 INFO L276 IsEmpty]: Start isEmpty. Operand 1490 states and 2161 transitions. [2020-10-13 13:37:17,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-13 13:37:17,724 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:37:17,724 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] [2020-10-13 13:37:17,725 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 13:37:17,725 INFO L427 AbstractCegarLoop]: === Iteration 7 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:37:17,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:37:17,725 INFO L82 PathProgramCache]: Analyzing trace with hash 831321083, now seen corresponding path program 1 times [2020-10-13 13:37:17,726 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:37:17,726 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1829689064] [2020-10-13 13:37:17,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:37:17,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:17,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:17,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:17,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:17,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:17,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:18,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:19,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:20,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:22,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:22,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-13 13:37:22,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 13:37:22,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 13:37:22,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:22,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:37:22,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-10-13 13:37:22,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 13:37:22,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:22,947 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-13 13:37:22,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:37:22,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:22,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:22,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:22,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:37:22,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:22,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 13:37:22,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:22,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:37:22,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:37:22,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:37:22,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:22,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:37:22,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:22,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:23,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:23,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-13 13:37:23,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:23,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-13 13:37:23,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:23,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:37:23,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:37:23,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-13 13:37:23,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:37:23,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 13:37:23,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:23,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:23,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:23,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:37:23,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:23,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:37:23,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:23,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:37:23,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:37:23,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:37:23,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:23,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-13 13:37:23,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:23,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:23,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:23,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 13:37:23,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:23,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-13 13:37:23,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:23,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:37:23,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:37:23,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 13:37:23,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:23,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-13 13:37:23,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:23,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:23,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:23,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:37:23,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:23,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:37:23,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:23,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:37:23,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 13:37:23,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:37:23,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:37:23,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-13 13:37:23,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:23,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:23,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:23,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:37:23,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:23,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 13:37:23,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:23,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:37:23,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 13:37:23,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:37:23,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:37:23,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-13 13:37:23,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:23,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:23,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:23,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:37:23,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:23,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:37:23,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:23,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:37:23,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:37:23,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:37:23,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:37:23,293 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 13:37:23,294 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1829689064] [2020-10-13 13:37:23,295 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:37:23,295 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-13 13:37:23,296 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493358235] [2020-10-13 13:37:23,297 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 13:37:23,297 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:37:23,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 13:37:23,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-13 13:37:23,305 INFO L87 Difference]: Start difference. First operand 1490 states and 2161 transitions. Second operand 9 states. [2020-10-13 13:37:23,486 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-13 13:37:25,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:37:25,653 INFO L93 Difference]: Finished difference Result 3102 states and 4613 transitions. [2020-10-13 13:37:25,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 13:37:25,654 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 101 [2020-10-13 13:37:25,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:37:25,668 INFO L225 Difference]: With dead ends: 3102 [2020-10-13 13:37:25,668 INFO L226 Difference]: Without dead ends: 2362 [2020-10-13 13:37:25,673 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-10-13 13:37:25,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2362 states. [2020-10-13 13:37:25,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2362 to 2072. [2020-10-13 13:37:25,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2072 states. [2020-10-13 13:37:25,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2072 states to 2072 states and 3027 transitions. [2020-10-13 13:37:25,839 INFO L78 Accepts]: Start accepts. Automaton has 2072 states and 3027 transitions. Word has length 101 [2020-10-13 13:37:25,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:37:25,840 INFO L479 AbstractCegarLoop]: Abstraction has 2072 states and 3027 transitions. [2020-10-13 13:37:25,840 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 13:37:25,840 INFO L276 IsEmpty]: Start isEmpty. Operand 2072 states and 3027 transitions. [2020-10-13 13:37:25,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-13 13:37:25,843 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:37:25,843 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] [2020-10-13 13:37:25,843 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 13:37:25,844 INFO L427 AbstractCegarLoop]: === Iteration 8 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:37:25,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:37:25,844 INFO L82 PathProgramCache]: Analyzing trace with hash 723508960, now seen corresponding path program 1 times [2020-10-13 13:37:25,844 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:37:25,845 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1914091186] [2020-10-13 13:37:25,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:37:25,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:25,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:25,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:25,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:26,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:26,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:26,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:26,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:30,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:30,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-13 13:37:30,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 13:37:30,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 13:37:30,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:30,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:37:30,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 13:37:30,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 13:37:30,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:31,100 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-13 13:37:31,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:37:31,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:31,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:31,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:31,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:37:31,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:31,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 13:37:31,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:31,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:37:31,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:37:31,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:37:31,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:31,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:37:31,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:31,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:31,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:31,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-13 13:37:31,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:31,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-13 13:37:31,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:31,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:37:31,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:37:31,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-13 13:37:31,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:37:31,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 13:37:31,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:31,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:31,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:31,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:37:31,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:31,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:37:31,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:31,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:37:31,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:37:31,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:37:31,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:31,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-13 13:37:31,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:31,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:31,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:31,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 13:37:31,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:31,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 13:37:31,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:31,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:37:31,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:37:31,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 13:37:31,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:31,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-13 13:37:31,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:31,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:31,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:31,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:37:31,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:31,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 13:37:31,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:31,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:37:31,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 13:37:31,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:37:31,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:31,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-13 13:37:31,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:31,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:31,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:31,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:37:31,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:31,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 13:37:31,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:31,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:37:31,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 13:37:31,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:37:31,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:31,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-13 13:37:31,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:31,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:31,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:31,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:37:31,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:31,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:37:31,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:31,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:37:31,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:37:31,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:37:31,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:31,418 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 13:37:31,419 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1914091186] [2020-10-13 13:37:31,419 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:37:31,419 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-13 13:37:31,420 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876400878] [2020-10-13 13:37:31,421 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 13:37:31,421 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:37:31,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 13:37:31,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-13 13:37:31,422 INFO L87 Difference]: Start difference. First operand 2072 states and 3027 transitions. Second operand 9 states. [2020-10-13 13:37:31,966 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-13 13:37:33,972 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-13 13:37:34,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:37:34,311 INFO L93 Difference]: Finished difference Result 5036 states and 7507 transitions. [2020-10-13 13:37:34,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 13:37:34,312 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 101 [2020-10-13 13:37:34,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:37:34,333 INFO L225 Difference]: With dead ends: 5036 [2020-10-13 13:37:34,333 INFO L226 Difference]: Without dead ends: 3104 [2020-10-13 13:37:34,341 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2020-10-13 13:37:34,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3104 states. [2020-10-13 13:37:34,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3104 to 2706. [2020-10-13 13:37:34,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2706 states. [2020-10-13 13:37:34,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2706 states to 2706 states and 3967 transitions. [2020-10-13 13:37:34,623 INFO L78 Accepts]: Start accepts. Automaton has 2706 states and 3967 transitions. Word has length 101 [2020-10-13 13:37:34,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:37:34,623 INFO L479 AbstractCegarLoop]: Abstraction has 2706 states and 3967 transitions. [2020-10-13 13:37:34,623 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 13:37:34,623 INFO L276 IsEmpty]: Start isEmpty. Operand 2706 states and 3967 transitions. [2020-10-13 13:37:34,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-13 13:37:34,626 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:37:34,626 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] [2020-10-13 13:37:34,626 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 13:37:34,626 INFO L427 AbstractCegarLoop]: === Iteration 9 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:37:34,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:37:34,627 INFO L82 PathProgramCache]: Analyzing trace with hash -370831216, now seen corresponding path program 1 times [2020-10-13 13:37:34,627 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:37:34,627 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1614079805] [2020-10-13 13:37:34,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:37:34,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:34,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:34,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:34,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:34,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:35,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:35,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:35,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:38,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:39,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:39,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-13 13:37:39,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 13:37:39,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-13 13:37:39,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:39,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:37:39,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-13 13:37:39,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 13:37:39,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:39,840 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-13 13:37:39,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:37:39,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:39,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:39,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:39,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:37:39,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:39,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 13:37:39,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:39,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:37:39,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:37:39,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:37:39,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:39,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:37:39,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:39,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:39,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:39,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:39,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-13 13:37:39,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:37:39,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-13 13:37:39,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:39,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:37:39,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-13 13:37:39,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 13:37:39,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:39,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-13 13:37:39,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:39,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:39,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:39,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:37:39,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:39,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:37:39,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:39,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:37:39,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 13:37:39,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:37:39,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:40,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-13 13:37:40,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:40,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:40,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:40,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:37:40,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:40,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:37:40,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:40,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:37:40,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 13:37:40,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:37:40,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:40,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-13 13:37:40,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:40,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:40,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:40,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:37:40,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:40,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:37:40,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:40,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:37:40,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 13:37:40,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:37:40,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:40,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-13 13:37:40,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:40,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:40,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:40,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:37:40,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:40,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:37:40,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:40,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:37:40,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 13:37:40,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:37:40,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:40,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-13 13:37:40,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:40,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:40,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:40,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:37:40,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:40,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:37:40,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:40,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:37:40,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:37:40,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:37:40,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:40,125 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 13:37:40,126 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1614079805] [2020-10-13 13:37:40,126 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:37:40,127 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 13:37:40,127 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818874914] [2020-10-13 13:37:40,127 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 13:37:40,128 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:37:40,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 13:37:40,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 13:37:40,128 INFO L87 Difference]: Start difference. First operand 2706 states and 3967 transitions. Second operand 7 states. [2020-10-13 13:37:40,338 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-13 13:37:41,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:37:41,833 INFO L93 Difference]: Finished difference Result 4467 states and 6562 transitions. [2020-10-13 13:37:41,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 13:37:41,833 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 101 [2020-10-13 13:37:41,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:37:41,849 INFO L225 Difference]: With dead ends: 4467 [2020-10-13 13:37:41,849 INFO L226 Difference]: Without dead ends: 3140 [2020-10-13 13:37:41,853 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-10-13 13:37:41,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3140 states. [2020-10-13 13:37:42,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3140 to 2708. [2020-10-13 13:37:42,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2708 states. [2020-10-13 13:37:42,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2708 states to 2708 states and 3969 transitions. [2020-10-13 13:37:42,080 INFO L78 Accepts]: Start accepts. Automaton has 2708 states and 3969 transitions. Word has length 101 [2020-10-13 13:37:42,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:37:42,080 INFO L479 AbstractCegarLoop]: Abstraction has 2708 states and 3969 transitions. [2020-10-13 13:37:42,081 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 13:37:42,081 INFO L276 IsEmpty]: Start isEmpty. Operand 2708 states and 3969 transitions. [2020-10-13 13:37:42,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-13 13:37:42,083 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:37:42,083 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:37:42,083 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 13:37:42,083 INFO L427 AbstractCegarLoop]: === Iteration 10 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:37:42,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:37:42,084 INFO L82 PathProgramCache]: Analyzing trace with hash 611327616, now seen corresponding path program 1 times [2020-10-13 13:37:42,084 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:37:42,084 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1201117504] [2020-10-13 13:37:42,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:37:42,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:42,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:42,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:42,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:42,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:42,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:43,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:43,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:47,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:47,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-13 13:37:47,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 13:37:47,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-13 13:37:47,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:47,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:37:47,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-13 13:37:47,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 13:37:47,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:47,291 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-13 13:37:47,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:37:47,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:47,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:47,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:47,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:37:47,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:47,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 13:37:47,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:47,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:37:47,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:37:47,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:37:47,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:47,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:37:47,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:47,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:47,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:47,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:47,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-13 13:37:47,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:37:47,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-13 13:37:47,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:47,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:37:47,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:37:47,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 13:37:47,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:47,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-13 13:37:47,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:47,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:47,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:47,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:37:47,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:47,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:37:47,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:47,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:37:47,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 13:37:47,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:37:47,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:47,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-13 13:37:47,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:47,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:47,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:47,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:37:47,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:47,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:37:47,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:47,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:37:47,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 13:37:47,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:37:47,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:47,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-13 13:37:47,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:47,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:47,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:47,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:37:47,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:47,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:37:47,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:47,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:37:47,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 13:37:47,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:37:47,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:47,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-13 13:37:47,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:47,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:47,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:47,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:37:47,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:47,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 13:37:47,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:47,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:37:47,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 13:37:47,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:37:47,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:47,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-13 13:37:47,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:47,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:47,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:47,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:37:47,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:47,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:37:47,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:47,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:37:47,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:37:47,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:37:47,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 13:37:47,676 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 13:37:47,677 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1201117504] [2020-10-13 13:37:47,677 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:37:47,677 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-13 13:37:47,677 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402171994] [2020-10-13 13:37:47,678 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 13:37:47,678 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:37:47,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 13:37:47,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-13 13:37:47,679 INFO L87 Difference]: Start difference. First operand 2708 states and 3969 transitions. Second operand 8 states. [2020-10-13 13:37:47,925 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-13 13:37:48,119 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-13 13:37:49,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:37:49,572 INFO L93 Difference]: Finished difference Result 5728 states and 8436 transitions. [2020-10-13 13:37:49,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 13:37:49,573 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 102 [2020-10-13 13:37:49,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:37:49,590 INFO L225 Difference]: With dead ends: 5728 [2020-10-13 13:37:49,590 INFO L226 Difference]: Without dead ends: 3037 [2020-10-13 13:37:49,599 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2020-10-13 13:37:49,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3037 states. [2020-10-13 13:37:49,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3037 to 2705. [2020-10-13 13:37:49,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2705 states. [2020-10-13 13:37:49,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2705 states to 2705 states and 3963 transitions. [2020-10-13 13:37:49,813 INFO L78 Accepts]: Start accepts. Automaton has 2705 states and 3963 transitions. Word has length 102 [2020-10-13 13:37:49,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:37:49,813 INFO L479 AbstractCegarLoop]: Abstraction has 2705 states and 3963 transitions. [2020-10-13 13:37:49,813 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 13:37:49,814 INFO L276 IsEmpty]: Start isEmpty. Operand 2705 states and 3963 transitions. [2020-10-13 13:37:49,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-13 13:37:49,816 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:37:49,816 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:37:49,816 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 13:37:49,817 INFO L427 AbstractCegarLoop]: === Iteration 11 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:37:49,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:37:49,819 INFO L82 PathProgramCache]: Analyzing trace with hash 1190625927, now seen corresponding path program 1 times [2020-10-13 13:37:49,819 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:37:49,819 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [480824293] [2020-10-13 13:37:49,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:37:49,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:49,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:49,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:49,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:50,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:50,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:50,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:50,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:52,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:54,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:54,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-13 13:37:54,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 13:37:54,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-13 13:37:54,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:54,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 13:37:54,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-13 13:37:54,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-13 13:37:54,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:55,060 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-13 13:37:55,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:37:55,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:55,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:55,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:55,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:37:55,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:55,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 13:37:55,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:55,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:37:55,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:37:55,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:37:55,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:55,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:37:55,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:55,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:55,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:55,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-13 13:37:55,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:55,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-13 13:37:55,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:55,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:37:55,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:37:55,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-13 13:37:55,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:55,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-13 13:37:55,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:55,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:55,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:55,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:37:55,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:55,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:37:55,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:55,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:37:55,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:37:55,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:37:55,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:55,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-13 13:37:55,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:55,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:55,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:55,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:37:55,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:55,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 13:37:55,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:55,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:37:55,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:37:55,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 13:37:55,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:55,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-13 13:37:55,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:55,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:55,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:55,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:37:55,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:55,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 13:37:55,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:55,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:37:55,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:37:55,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 13:37:55,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:55,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-13 13:37:55,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:55,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:55,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:55,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:37:55,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:55,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 13:37:55,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:55,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:37:55,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:37:55,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 13:37:55,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:55,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-13 13:37:55,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:55,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:55,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:55,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:37:55,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:55,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:37:55,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:55,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:37:55,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-13 13:37:55,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 13:37:55,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:55,419 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 13:37:55,419 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [480824293] [2020-10-13 13:37:55,419 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:37:55,419 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-13 13:37:55,420 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030570947] [2020-10-13 13:37:55,420 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 13:37:55,421 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:37:55,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 13:37:55,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2020-10-13 13:37:55,422 INFO L87 Difference]: Start difference. First operand 2705 states and 3963 transitions. Second operand 13 states. [2020-10-13 13:37:55,645 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-13 13:37:56,161 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-10-13 13:37:56,340 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-13 13:37:57,918 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-13 13:37:58,095 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-13 13:37:59,915 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-13 13:38:01,534 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 77 [2020-10-13 13:38:03,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:38:03,984 INFO L93 Difference]: Finished difference Result 15933 states and 24222 transitions. [2020-10-13 13:38:03,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-10-13 13:38:03,985 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 102 [2020-10-13 13:38:03,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:38:04,077 INFO L225 Difference]: With dead ends: 15933 [2020-10-13 13:38:04,078 INFO L226 Difference]: Without dead ends: 13367 [2020-10-13 13:38:04,096 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 854 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=639, Invalid=2223, Unknown=0, NotChecked=0, Total=2862 [2020-10-13 13:38:04,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13367 states. [2020-10-13 13:38:05,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13367 to 11407. [2020-10-13 13:38:05,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11407 states. [2020-10-13 13:38:05,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11407 states to 11407 states and 16927 transitions. [2020-10-13 13:38:05,106 INFO L78 Accepts]: Start accepts. Automaton has 11407 states and 16927 transitions. Word has length 102 [2020-10-13 13:38:05,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:38:05,107 INFO L479 AbstractCegarLoop]: Abstraction has 11407 states and 16927 transitions. [2020-10-13 13:38:05,107 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 13:38:05,107 INFO L276 IsEmpty]: Start isEmpty. Operand 11407 states and 16927 transitions. [2020-10-13 13:38:05,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-13 13:38:05,114 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:38:05,114 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] [2020-10-13 13:38:05,115 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 13:38:05,115 INFO L427 AbstractCegarLoop]: === Iteration 12 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:38:05,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:38:05,115 INFO L82 PathProgramCache]: Analyzing trace with hash -1616442373, now seen corresponding path program 1 times [2020-10-13 13:38:05,116 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:38:05,117 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1984282509] [2020-10-13 13:38:05,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:38:05,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:05,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:05,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:05,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:05,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:05,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:05,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:05,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:07,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:07,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:10,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:10,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-13 13:38:10,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 13:38:10,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 13:38:10,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:10,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 13:38:10,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-13 13:38:10,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-13 13:38:10,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:10,342 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-13 13:38:10,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:38:10,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:10,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:10,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:10,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:38:10,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:10,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 13:38:10,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:10,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:38:10,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:38:10,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:38:10,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:10,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:38:10,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:10,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:10,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:10,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-13 13:38:10,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:10,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-13 13:38:10,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:10,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:38:10,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:38:10,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-13 13:38:10,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:10,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-13 13:38:10,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:10,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:10,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:10,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:38:10,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:10,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:38:10,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:10,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:38:10,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:38:10,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:38:10,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:10,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-13 13:38:10,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:10,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:10,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:10,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:38:10,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:10,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 13:38:10,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:10,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:38:10,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:38:10,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 13:38:10,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:10,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-13 13:38:10,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:10,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:10,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:10,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:38:10,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:10,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 13:38:10,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:10,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:38:10,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:38:10,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 13:38:10,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:10,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-13 13:38:10,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:10,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:10,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:10,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:38:10,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:10,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 13:38:10,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:10,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:38:10,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:38:10,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 13:38:10,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:10,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-13 13:38:10,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:10,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:10,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:10,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:38:10,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:10,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:38:10,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:10,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:38:10,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-13 13:38:10,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:38:10,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:10,681 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 13:38:10,682 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1984282509] [2020-10-13 13:38:10,682 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:38:10,682 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-13 13:38:10,682 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168480210] [2020-10-13 13:38:10,683 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 13:38:10,683 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:38:10,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 13:38:10,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2020-10-13 13:38:10,683 INFO L87 Difference]: Start difference. First operand 11407 states and 16927 transitions. Second operand 14 states. [2020-10-13 13:38:10,925 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-13 13:38:11,483 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-10-13 13:38:11,667 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-13 13:38:11,858 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-13 13:38:13,485 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-13 13:38:13,676 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-13 13:38:13,884 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-13 13:38:14,077 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-13 13:38:17,056 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-13 13:38:17,344 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-13 13:38:23,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:38:23,805 INFO L93 Difference]: Finished difference Result 49282 states and 74722 transitions. [2020-10-13 13:38:23,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2020-10-13 13:38:23,806 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 103 [2020-10-13 13:38:23,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:38:23,971 INFO L225 Difference]: With dead ends: 49282 [2020-10-13 13:38:23,972 INFO L226 Difference]: Without dead ends: 38014 [2020-10-13 13:38:24,023 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1485 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=957, Invalid=3735, Unknown=0, NotChecked=0, Total=4692 [2020-10-13 13:38:24,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38014 states. [2020-10-13 13:38:26,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38014 to 33182. [2020-10-13 13:38:26,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33182 states. [2020-10-13 13:38:26,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33182 states to 33182 states and 49996 transitions. [2020-10-13 13:38:26,971 INFO L78 Accepts]: Start accepts. Automaton has 33182 states and 49996 transitions. Word has length 103 [2020-10-13 13:38:26,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:38:26,972 INFO L479 AbstractCegarLoop]: Abstraction has 33182 states and 49996 transitions. [2020-10-13 13:38:26,972 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 13:38:26,972 INFO L276 IsEmpty]: Start isEmpty. Operand 33182 states and 49996 transitions. [2020-10-13 13:38:26,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-13 13:38:26,975 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:38:26,975 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] [2020-10-13 13:38:26,975 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 13:38:26,976 INFO L427 AbstractCegarLoop]: === Iteration 13 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:38:26,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:38:26,976 INFO L82 PathProgramCache]: Analyzing trace with hash 1507068606, now seen corresponding path program 1 times [2020-10-13 13:38:26,976 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:38:26,976 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [569313665] [2020-10-13 13:38:26,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:38:27,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:27,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:27,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:27,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:27,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:27,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:27,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:27,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:29,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:29,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:32,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:32,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-13 13:38:32,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 13:38:32,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-13 13:38:32,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:32,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 13:38:32,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-13 13:38:32,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-13 13:38:32,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:32,190 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-13 13:38:32,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:38:32,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:32,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:32,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:32,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:38:32,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:32,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 13:38:32,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:32,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:38:32,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:38:32,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:38:32,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:32,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:38:32,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:32,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:32,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:32,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-13 13:38:32,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:32,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-13 13:38:32,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:32,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:38:32,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:38:32,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-13 13:38:32,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:32,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-13 13:38:32,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:32,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:32,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:32,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:38:32,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:32,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:38:32,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:32,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:38:32,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:38:32,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:38:32,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:32,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-13 13:38:32,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:32,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:32,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:32,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:38:32,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:32,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:38:32,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:32,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:38:32,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:38:32,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 13:38:32,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:32,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-13 13:38:32,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:32,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:32,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:32,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:38:32,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:32,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 13:38:32,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:32,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:38:32,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:38:32,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 13:38:32,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:32,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-13 13:38:32,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:32,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:32,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:32,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:38:32,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:32,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:38:32,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:32,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:38:32,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:38:32,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 13:38:32,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:32,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-13 13:38:32,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:32,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:32,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:32,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:38:32,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:32,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:38:32,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:32,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:38:32,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 13:38:32,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 13:38:32,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:32,437 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 13:38:32,437 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [569313665] [2020-10-13 13:38:32,437 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:38:32,438 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-13 13:38:32,438 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176393541] [2020-10-13 13:38:32,438 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 13:38:32,438 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:38:32,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 13:38:32,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-13 13:38:32,439 INFO L87 Difference]: Start difference. First operand 33182 states and 49996 transitions. Second operand 10 states. [2020-10-13 13:38:32,649 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-13 13:38:33,114 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-10-13 13:38:34,624 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-13 13:38:34,804 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-13 13:38:40,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:38:40,462 INFO L93 Difference]: Finished difference Result 113523 states and 172234 transitions. [2020-10-13 13:38:40,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-13 13:38:40,463 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 104 [2020-10-13 13:38:40,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:38:40,751 INFO L225 Difference]: With dead ends: 113523 [2020-10-13 13:38:40,752 INFO L226 Difference]: Without dead ends: 80650 [2020-10-13 13:38:40,848 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 252 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=254, Invalid=802, Unknown=0, NotChecked=0, Total=1056 [2020-10-13 13:38:40,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80650 states. [2020-10-13 13:38:45,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80650 to 69911. [2020-10-13 13:38:45,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69911 states. [2020-10-13 13:38:45,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69911 states to 69911 states and 105187 transitions. [2020-10-13 13:38:45,938 INFO L78 Accepts]: Start accepts. Automaton has 69911 states and 105187 transitions. Word has length 104 [2020-10-13 13:38:45,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:38:45,938 INFO L479 AbstractCegarLoop]: Abstraction has 69911 states and 105187 transitions. [2020-10-13 13:38:45,938 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 13:38:45,938 INFO L276 IsEmpty]: Start isEmpty. Operand 69911 states and 105187 transitions. [2020-10-13 13:38:45,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-13 13:38:45,941 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:38:45,942 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] [2020-10-13 13:38:45,942 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 13:38:45,942 INFO L427 AbstractCegarLoop]: === Iteration 14 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:38:45,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:38:45,942 INFO L82 PathProgramCache]: Analyzing trace with hash 1357205054, now seen corresponding path program 1 times [2020-10-13 13:38:45,942 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:38:45,943 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1760368985] [2020-10-13 13:38:45,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:38:45,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:45,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:46,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:46,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:46,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:46,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:46,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:46,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:48,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:48,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:48,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:50,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:50,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-13 13:38:50,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-13 13:38:50,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 13:38:50,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:50,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:38:50,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-10-13 13:38:50,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-13 13:38:50,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:51,150 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-13 13:38:51,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:38:51,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:51,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:51,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:51,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:38:51,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:51,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 13:38:51,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:51,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:38:51,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:38:51,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:38:51,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:51,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:38:51,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:51,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:51,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:51,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-13 13:38:51,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:51,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 13:38:51,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:51,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:38:51,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:38:51,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-13 13:38:51,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:51,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-13 13:38:51,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:51,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:51,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:51,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:38:51,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:51,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:38:51,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:51,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:38:51,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:38:51,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:38:51,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:51,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-13 13:38:51,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:51,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:51,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:51,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:38:51,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:51,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:38:51,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:51,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:38:51,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:38:51,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 13:38:51,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:51,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-13 13:38:51,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:51,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:51,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:51,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:38:51,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:51,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:38:51,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:51,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:38:51,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:38:51,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 13:38:51,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:51,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-13 13:38:51,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:51,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:51,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:51,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-13 13:38:51,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:51,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 13:38:51,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:51,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:38:51,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:38:51,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 13:38:51,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:51,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-13 13:38:51,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:51,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:51,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:51,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:38:51,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:51,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:38:51,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:51,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:38:51,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:38:51,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:38:51,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:51,372 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 13:38:51,372 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1760368985] [2020-10-13 13:38:51,372 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:38:51,372 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-13 13:38:51,373 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912587723] [2020-10-13 13:38:51,373 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 13:38:51,373 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:38:51,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 13:38:51,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-13 13:38:51,374 INFO L87 Difference]: Start difference. First operand 69911 states and 105187 transitions. Second operand 9 states. [2020-10-13 13:38:51,581 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-13 13:38:58,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:38:58,118 INFO L93 Difference]: Finished difference Result 159544 states and 241178 transitions. [2020-10-13 13:38:58,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 13:38:58,118 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 104 [2020-10-13 13:38:58,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:38:58,477 INFO L225 Difference]: With dead ends: 159544 [2020-10-13 13:38:58,478 INFO L226 Difference]: Without dead ends: 114695 [2020-10-13 13:38:58,578 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-10-13 13:38:58,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114695 states. [2020-10-13 13:39:05,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114695 to 102142. [2020-10-13 13:39:05,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102142 states. [2020-10-13 13:39:06,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102142 states to 102142 states and 151929 transitions. [2020-10-13 13:39:06,048 INFO L78 Accepts]: Start accepts. Automaton has 102142 states and 151929 transitions. Word has length 104 [2020-10-13 13:39:06,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:39:06,049 INFO L479 AbstractCegarLoop]: Abstraction has 102142 states and 151929 transitions. [2020-10-13 13:39:06,049 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 13:39:06,049 INFO L276 IsEmpty]: Start isEmpty. Operand 102142 states and 151929 transitions. [2020-10-13 13:39:06,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-13 13:39:06,051 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:39:06,051 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] [2020-10-13 13:39:06,052 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 13:39:06,052 INFO L427 AbstractCegarLoop]: === Iteration 15 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:39:06,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:39:06,052 INFO L82 PathProgramCache]: Analyzing trace with hash -1088663856, now seen corresponding path program 1 times [2020-10-13 13:39:06,052 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:39:06,052 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1053586827] [2020-10-13 13:39:06,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:39:06,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:39:06,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:06,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:06,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:06,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:06,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:06,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:06,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:07,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:07,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:10,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:11,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:39:11,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-13 13:39:11,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-13 13:39:11,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-13 13:39:11,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:39:11,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:39:11,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 13:39:11,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-13 13:39:11,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:39:11,270 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-13 13:39:11,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:39:11,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:39:11,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:11,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:39:11,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:39:11,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:39:11,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:39:11,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:39:11,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:39:11,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:39:11,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:39:11,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:39:11,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:39:11,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:39:11,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:11,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:39:11,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-13 13:39:11,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:39:11,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 13:39:11,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:39:11,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:39:11,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:39:11,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-13 13:39:11,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:39:11,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-13 13:39:11,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:39:11,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:11,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:39:11,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:39:11,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:39:11,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:39:11,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:39:11,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:39:11,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:39:11,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:39:11,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:39:11,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-13 13:39:11,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:39:11,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:11,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:39:11,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:39:11,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:39:11,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:39:11,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:39:11,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:39:11,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:39:11,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 13:39:11,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:39:11,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-13 13:39:11,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:39:11,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:11,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:39:11,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-13 13:39:11,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:39:11,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 13:39:11,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:39:11,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:39:11,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:39:11,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 13:39:11,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:39:11,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-13 13:39:11,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:39:11,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:11,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:39:11,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:39:11,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:39:11,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:39:11,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:39:11,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:39:11,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 13:39:11,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:39:11,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:39:11,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-13 13:39:11,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:39:11,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:11,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:39:11,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:39:11,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:39:11,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:39:11,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:39:11,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:39:11,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:39:11,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:39:11,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:39:11,488 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 13:39:11,489 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1053586827] [2020-10-13 13:39:11,489 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:39:11,489 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-13 13:39:11,489 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664186210] [2020-10-13 13:39:11,490 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 13:39:11,490 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:39:11,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 13:39:11,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-13 13:39:11,491 INFO L87 Difference]: Start difference. First operand 102142 states and 151929 transitions. Second operand 9 states. [2020-10-13 13:39:11,682 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-13 13:39:24,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:39:24,505 INFO L93 Difference]: Finished difference Result 267595 states and 399909 transitions. [2020-10-13 13:39:24,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 13:39:24,506 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 104 [2020-10-13 13:39:24,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:39:25,148 INFO L225 Difference]: With dead ends: 267595 [2020-10-13 13:39:25,148 INFO L226 Difference]: Without dead ends: 180684 [2020-10-13 13:39:25,287 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-10-13 13:39:25,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180684 states. [2020-10-13 13:39:33,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180684 to 163976. [2020-10-13 13:39:33,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163976 states. [2020-10-13 13:39:34,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163976 states to 163976 states and 239620 transitions. [2020-10-13 13:39:34,072 INFO L78 Accepts]: Start accepts. Automaton has 163976 states and 239620 transitions. Word has length 104 [2020-10-13 13:39:34,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:39:34,073 INFO L479 AbstractCegarLoop]: Abstraction has 163976 states and 239620 transitions. [2020-10-13 13:39:34,073 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 13:39:34,073 INFO L276 IsEmpty]: Start isEmpty. Operand 163976 states and 239620 transitions. [2020-10-13 13:39:34,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-13 13:39:34,074 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:39:34,074 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] [2020-10-13 13:39:34,074 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 13:39:34,074 INFO L427 AbstractCegarLoop]: === Iteration 16 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:39:34,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:39:34,075 INFO L82 PathProgramCache]: Analyzing trace with hash -500023790, now seen corresponding path program 1 times [2020-10-13 13:39:34,075 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:39:34,075 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1652498636] [2020-10-13 13:39:34,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:39:34,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:39:34,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:34,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:34,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:34,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:37,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:37,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:37,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:39,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:39,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:39:39,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-13 13:39:39,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 13:39:39,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-13 13:39:39,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:39:39,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 13:39:39,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-10-13 13:39:39,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-13 13:39:39,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:39:39,295 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-13 13:39:39,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:39:39,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:39:39,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:39,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:39:39,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:39:39,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:39:39,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 13:39:39,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:39:39,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:39:39,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:39:39,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:39:39,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:39:39,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:39:39,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:39:39,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:39,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:39:39,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-13 13:39:39,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:39:39,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 13:39:39,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:39:39,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:39:39,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:39:39,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-13 13:39:39,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:39:39,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-13 13:39:39,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:39:39,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:39,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:39:39,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:39:39,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:39:39,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:39:39,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:39:39,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:39:39,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:39:39,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:39:39,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:39:39,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-13 13:39:39,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:39:39,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:39,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:39:39,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:39:39,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:39:39,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:39:39,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:39:39,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:39:39,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:39:39,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 13:39:39,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:39:39,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-13 13:39:39,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:39:39,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:39,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:39:39,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:39:39,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:39:39,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 13:39:39,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:39:39,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:39:39,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:39:39,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 13:39:39,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:39:39,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-13 13:39:39,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:39:39,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:39,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:39:39,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:39:39,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:39:39,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 13:39:39,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:39:39,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:39:39,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:39:39,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 13:39:39,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:39:39,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-13 13:39:39,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:39:39,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:39,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:39:39,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:39:39,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:39:39,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:39:39,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:39:39,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:39:39,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 13:39:39,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 13:39:39,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:39:39,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:39:39,545 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1652498636] [2020-10-13 13:39:39,545 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:39:39,545 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-13 13:39:39,545 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778130291] [2020-10-13 13:39:39,546 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 13:39:39,546 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:39:39,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 13:39:39,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-13 13:39:39,546 INFO L87 Difference]: Start difference. First operand 163976 states and 239620 transitions. Second operand 10 states. [2020-10-13 13:39:39,748 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-13 13:39:40,194 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-10-13 13:39:41,536 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-13 13:39:41,725 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 159