/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/eca-rers2012/Problem12_label56.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 08:27:14,609 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 08:27:14,611 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 08:27:14,637 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 08:27:14,637 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 08:27:14,638 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 08:27:14,640 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 08:27:14,641 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 08:27:14,643 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 08:27:14,644 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 08:27:14,645 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 08:27:14,646 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 08:27:14,647 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 08:27:14,647 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 08:27:14,652 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 08:27:14,653 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 08:27:14,654 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 08:27:14,655 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 08:27:14,660 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 08:27:14,663 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 08:27:14,667 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 08:27:14,668 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 08:27:14,672 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 08:27:14,673 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 08:27:14,677 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 08:27:14,677 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 08:27:14,677 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 08:27:14,678 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 08:27:14,679 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 08:27:14,682 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 08:27:14,682 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 08:27:14,683 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 08:27:14,684 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 08:27:14,686 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 08:27:14,695 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 08:27:14,696 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 08:27:14,697 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 08:27:14,697 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 08:27:14,697 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 08:27:14,698 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 08:27:14,701 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 08:27:14,702 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 08:27:14,751 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 08:27:14,751 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 08:27:14,754 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 08:27:14,755 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 08:27:14,756 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 08:27:14,756 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 08:27:14,756 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 08:27:14,756 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 08:27:14,757 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 08:27:14,757 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 08:27:14,757 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 08:27:14,757 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 08:27:14,757 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 08:27:14,757 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 08:27:14,758 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 08:27:14,758 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 08:27:14,759 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 08:27:14,759 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 08:27:14,760 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 08:27:14,760 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 08:27:14,760 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 08:27:14,760 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 08:27:14,760 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 08:27:14,761 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 08:27:14,761 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 08:27:14,761 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 08:27:14,761 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 08:27:14,762 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 08:27:14,762 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 08:27:14,762 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 08:27:15,135 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 08:27:15,160 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 08:27:15,165 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 08:27:15,167 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 08:27:15,168 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 08:27:15,168 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label56.c [2020-10-13 08:27:15,247 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/69bae7200/b1eefe38c6754be899fb42cfd32f210c/FLAGe292451e6 [2020-10-13 08:27:16,165 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 08:27:16,165 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label56.c [2020-10-13 08:27:16,198 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/69bae7200/b1eefe38c6754be899fb42cfd32f210c/FLAGe292451e6 [2020-10-13 08:27:16,651 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/69bae7200/b1eefe38c6754be899fb42cfd32f210c [2020-10-13 08:27:16,660 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 08:27:16,661 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 08:27:16,662 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 08:27:16,663 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 08:27:16,667 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 08:27:16,668 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:27:16" (1/1) ... [2020-10-13 08:27:16,671 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12d8d2ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:27:16, skipping insertion in model container [2020-10-13 08:27:16,671 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:27:16" (1/1) ... [2020-10-13 08:27:16,680 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 08:27:16,829 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 08:27:18,556 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 08:27:18,568 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 08:27:19,179 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 08:27:19,211 INFO L208 MainTranslator]: Completed translation [2020-10-13 08:27:19,212 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:27:19 WrapperNode [2020-10-13 08:27:19,212 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 08:27:19,213 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 08:27:19,213 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 08:27:19,213 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 08:27:19,230 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:27:19" (1/1) ... [2020-10-13 08:27:19,232 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:27:19" (1/1) ... [2020-10-13 08:27:19,309 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:27:19" (1/1) ... [2020-10-13 08:27:19,310 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:27:19" (1/1) ... [2020-10-13 08:27:19,417 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:27:19" (1/1) ... [2020-10-13 08:27:19,457 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:27:19" (1/1) ... [2020-10-13 08:27:19,489 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:27:19" (1/1) ... [2020-10-13 08:27:19,532 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 08:27:19,533 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 08:27:19,533 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 08:27:19,533 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 08:27:19,535 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:27:19" (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 08:27:19,615 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 08:27:19,615 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 08:27:19,615 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 08:27:19,615 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 08:27:19,616 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-13 08:27:19,616 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-13 08:27:19,616 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 08:27:19,617 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 08:27:19,618 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 08:27:19,618 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-13 08:27:19,619 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-13 08:27:19,619 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 08:27:19,619 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 08:27:19,619 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 08:27:19,619 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 08:27:19,620 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 08:27:19,620 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 08:27:24,485 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 08:27:24,485 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 08:27:24,496 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:27:24 BoogieIcfgContainer [2020-10-13 08:27:24,496 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 08:27:24,497 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 08:27:24,497 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 08:27:24,501 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 08:27:24,501 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 08:27:16" (1/3) ... [2020-10-13 08:27:24,502 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@118fee69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:27:24, skipping insertion in model container [2020-10-13 08:27:24,502 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:27:19" (2/3) ... [2020-10-13 08:27:24,502 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@118fee69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:27:24, skipping insertion in model container [2020-10-13 08:27:24,502 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:27:24" (3/3) ... [2020-10-13 08:27:24,504 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem12_label56.c [2020-10-13 08:27:24,517 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 08:27:24,527 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 08:27:24,542 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 08:27:24,574 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 08:27:24,574 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 08:27:24,574 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 08:27:24,574 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 08:27:24,574 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 08:27:24,574 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 08:27:24,575 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 08:27:24,575 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 08:27:24,611 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states. [2020-10-13 08:27:24,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-13 08:27:24,620 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:27:24,622 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:27:24,622 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:27:24,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:27:24,628 INFO L82 PathProgramCache]: Analyzing trace with hash 655830005, now seen corresponding path program 1 times [2020-10-13 08:27:24,637 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:27:24,638 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1485456554] [2020-10-13 08:27:24,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:27:24,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:27:24,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:27:25,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:27:25,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 08:27:25,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:27:25,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 435 [2020-10-13 08:27:25,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:27:25,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 08:27:25,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 08:27:25,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-13 08:27:25,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 08:27:25,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:27:25,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:27:25,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:27:25,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:27:25,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:27:25,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:27:25,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 08:27:25,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:27:25,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:27:25,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:27:25,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:27:25,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:27:25,409 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 08:27:25,410 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1485456554] [2020-10-13 08:27:25,412 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 08:27:25,412 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 08:27:25,413 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406902326] [2020-10-13 08:27:25,418 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 08:27:25,418 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:27:25,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 08:27:25,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 08:27:25,436 INFO L87 Difference]: Start difference. First operand 839 states. Second operand 4 states. [2020-10-13 08:27:34,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:27:34,221 INFO L93 Difference]: Finished difference Result 2487 states and 4744 transitions. [2020-10-13 08:27:34,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:27:34,224 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 62 [2020-10-13 08:27:34,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:27:34,259 INFO L225 Difference]: With dead ends: 2487 [2020-10-13 08:27:34,259 INFO L226 Difference]: Without dead ends: 1568 [2020-10-13 08:27:34,270 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:27:34,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1568 states. [2020-10-13 08:27:34,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1568 to 1553. [2020-10-13 08:27:34,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1553 states. [2020-10-13 08:27:34,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1553 states to 1553 states and 2469 transitions. [2020-10-13 08:27:34,458 INFO L78 Accepts]: Start accepts. Automaton has 1553 states and 2469 transitions. Word has length 62 [2020-10-13 08:27:34,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:27:34,460 INFO L479 AbstractCegarLoop]: Abstraction has 1553 states and 2469 transitions. [2020-10-13 08:27:34,460 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 08:27:34,460 INFO L276 IsEmpty]: Start isEmpty. Operand 1553 states and 2469 transitions. [2020-10-13 08:27:34,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-13 08:27:34,477 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:27:34,480 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:27:34,481 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 08:27:34,482 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:27:34,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:27:34,483 INFO L82 PathProgramCache]: Analyzing trace with hash 271239624, now seen corresponding path program 1 times [2020-10-13 08:27:34,483 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:27:34,483 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1609455634] [2020-10-13 08:27:34,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:27:34,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:27:34,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:27:34,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:27:35,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:27:35,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:27:36,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:27:36,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-13 08:27:36,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 08:27:36,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1808 [2020-10-13 08:27:36,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:27:36,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:27:36,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-10-13 08:27:36,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 08:27:36,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 08:27:36,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:27:36,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:27:36,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:27:36,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:27:36,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:27:36,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:27:36,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 08:27:36,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:27:36,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:27:36,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:27:36,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:27:36,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:27:36,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:27:36,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:27:36,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:27:36,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:27:36,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 08:27:36,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:27:36,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-13 08:27:36,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:27:36,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:27:36,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:27:36,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-13 08:27:36,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:27:36,714 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 54 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:27:36,714 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1609455634] [2020-10-13 08:27:36,715 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:27:36,715 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:27:36,715 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373056395] [2020-10-13 08:27:36,717 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:27:36,717 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:27:36,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:27:36,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:27:36,718 INFO L87 Difference]: Start difference. First operand 1553 states and 2469 transitions. Second operand 5 states. [2020-10-13 08:27:43,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:27:43,004 INFO L93 Difference]: Finished difference Result 2360 states and 3967 transitions. [2020-10-13 08:27:43,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:27:43,012 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 134 [2020-10-13 08:27:43,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:27:43,023 INFO L225 Difference]: With dead ends: 2360 [2020-10-13 08:27:43,024 INFO L226 Difference]: Without dead ends: 1568 [2020-10-13 08:27:43,033 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:27:43,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1568 states. [2020-10-13 08:27:43,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1568 to 1553. [2020-10-13 08:27:43,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1553 states. [2020-10-13 08:27:43,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1553 states to 1553 states and 2467 transitions. [2020-10-13 08:27:43,089 INFO L78 Accepts]: Start accepts. Automaton has 1553 states and 2467 transitions. Word has length 134 [2020-10-13 08:27:43,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:27:43,093 INFO L479 AbstractCegarLoop]: Abstraction has 1553 states and 2467 transitions. [2020-10-13 08:27:43,093 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:27:43,093 INFO L276 IsEmpty]: Start isEmpty. Operand 1553 states and 2467 transitions. [2020-10-13 08:27:43,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-10-13 08:27:43,098 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:27:43,099 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:27:43,099 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 08:27:43,100 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:27:43,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:27:43,101 INFO L82 PathProgramCache]: Analyzing trace with hash -1040567595, now seen corresponding path program 1 times [2020-10-13 08:27:43,101 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:27:43,101 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1991094413] [2020-10-13 08:27:43,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:27:43,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:27:43,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:27:43,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:27:44,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:27:44,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-13 08:27:44,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:27:44,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 879 [2020-10-13 08:27:44,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:27:44,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:27:44,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-13 08:27:44,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-13 08:27:44,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:27:44,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:27:44,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:27:44,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:27:44,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:27:44,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:27:44,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:27:44,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:27:44,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:27:44,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:27:44,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:27:44,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:27:44,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:27:44,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:27:44,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:27:44,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:27:44,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:27:44,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-13 08:27:44,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:27:44,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-13 08:27:44,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:27:44,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:27:44,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:27:44,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-13 08:27:44,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:27:44,331 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 54 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:27:44,332 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1991094413] [2020-10-13 08:27:44,332 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:27:44,332 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:27:44,333 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524773899] [2020-10-13 08:27:44,333 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:27:44,334 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:27:44,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:27:44,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:27:44,334 INFO L87 Difference]: Start difference. First operand 1553 states and 2467 transitions. Second operand 5 states. [2020-10-13 08:27:53,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:27:53,804 INFO L93 Difference]: Finished difference Result 4675 states and 7473 transitions. [2020-10-13 08:27:53,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:27:53,805 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 141 [2020-10-13 08:27:53,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:27:53,855 INFO L225 Difference]: With dead ends: 4675 [2020-10-13 08:27:53,856 INFO L226 Difference]: Without dead ends: 3128 [2020-10-13 08:27:53,860 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:27:53,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3128 states. [2020-10-13 08:27:53,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3128 to 3117. [2020-10-13 08:27:53,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3117 states. [2020-10-13 08:27:53,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3117 states to 3117 states and 4426 transitions. [2020-10-13 08:27:53,962 INFO L78 Accepts]: Start accepts. Automaton has 3117 states and 4426 transitions. Word has length 141 [2020-10-13 08:27:53,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:27:53,964 INFO L479 AbstractCegarLoop]: Abstraction has 3117 states and 4426 transitions. [2020-10-13 08:27:53,964 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:27:53,964 INFO L276 IsEmpty]: Start isEmpty. Operand 3117 states and 4426 transitions. [2020-10-13 08:27:53,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-13 08:27:53,966 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:27:53,966 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:27:53,967 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 08:27:53,967 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:27:53,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:27:53,972 INFO L82 PathProgramCache]: Analyzing trace with hash -25351112, now seen corresponding path program 1 times [2020-10-13 08:27:53,972 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:27:53,973 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [600185997] [2020-10-13 08:27:53,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:27:54,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:27:54,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:27:54,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:27:54,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:27:54,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-13 08:27:54,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:27:54,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 607 [2020-10-13 08:27:54,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:27:54,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:27:54,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-13 08:27:54,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-13 08:27:54,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:27:54,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:27:54,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:27:54,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:27:54,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:27:54,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:27:54,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:27:54,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 08:27:54,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:27:54,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:27:54,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:27:54,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:27:54,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:27:54,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:27:54,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:27:54,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:27:54,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:27:54,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-13 08:27:54,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:27:54,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-13 08:27:54,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:27:54,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:27:54,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:27:54,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-13 08:27:54,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:27:54,858 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 54 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:27:54,858 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [600185997] [2020-10-13 08:27:54,859 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:27:54,859 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:27:54,859 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441983858] [2020-10-13 08:27:54,860 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:27:54,860 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:27:54,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:27:54,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:27:54,861 INFO L87 Difference]: Start difference. First operand 3117 states and 4426 transitions. Second operand 5 states. [2020-10-13 08:28:05,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:28:05,524 INFO L93 Difference]: Finished difference Result 9348 states and 13438 transitions. [2020-10-13 08:28:05,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:28:05,532 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 142 [2020-10-13 08:28:05,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:28:05,567 INFO L225 Difference]: With dead ends: 9348 [2020-10-13 08:28:05,568 INFO L226 Difference]: Without dead ends: 6237 [2020-10-13 08:28:05,576 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:28:05,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6237 states. [2020-10-13 08:28:05,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6237 to 6226. [2020-10-13 08:28:05,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6226 states. [2020-10-13 08:28:05,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6226 states to 6226 states and 8289 transitions. [2020-10-13 08:28:05,722 INFO L78 Accepts]: Start accepts. Automaton has 6226 states and 8289 transitions. Word has length 142 [2020-10-13 08:28:05,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:28:05,723 INFO L479 AbstractCegarLoop]: Abstraction has 6226 states and 8289 transitions. [2020-10-13 08:28:05,723 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:28:05,723 INFO L276 IsEmpty]: Start isEmpty. Operand 6226 states and 8289 transitions. [2020-10-13 08:28:05,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-13 08:28:05,726 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:28:05,726 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:28:05,726 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 08:28:05,726 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:28:05,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:28:05,727 INFO L82 PathProgramCache]: Analyzing trace with hash -335173051, now seen corresponding path program 1 times [2020-10-13 08:28:05,727 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:28:05,727 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2088166061] [2020-10-13 08:28:05,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:28:05,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:28:05,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:28:05,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:28:06,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:28:06,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:28:06,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-10-13 08:28:06,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:28:06,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1112 [2020-10-13 08:28:06,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:28:06,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:28:06,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-13 08:28:06,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-13 08:28:06,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:28:06,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:28:06,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:28:06,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:28:06,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:28:06,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:28:06,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:28:06,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 08:28:06,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:28:06,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:28:06,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:28:06,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:28:06,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:28:06,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:28:06,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:28:07,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:28:07,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:28:07,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-13 08:28:07,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:28:07,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-13 08:28:07,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:28:07,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:28:07,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:28:07,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-13 08:28:07,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:28:07,148 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 54 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:28:07,148 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2088166061] [2020-10-13 08:28:07,148 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:28:07,149 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:28:07,149 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600659445] [2020-10-13 08:28:07,149 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:28:07,149 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:28:07,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:28:07,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:28:07,150 INFO L87 Difference]: Start difference. First operand 6226 states and 8289 transitions. Second operand 5 states. [2020-10-13 08:28:18,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:28:18,172 INFO L93 Difference]: Finished difference Result 14785 states and 20291 transitions. [2020-10-13 08:28:18,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:28:18,174 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 149 [2020-10-13 08:28:18,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:28:18,210 INFO L225 Difference]: With dead ends: 14785 [2020-10-13 08:28:18,211 INFO L226 Difference]: Without dead ends: 8565 [2020-10-13 08:28:18,225 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:28:18,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8565 states. [2020-10-13 08:28:18,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8565 to 8554. [2020-10-13 08:28:18,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8554 states. [2020-10-13 08:28:18,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8554 states to 8554 states and 10894 transitions. [2020-10-13 08:28:18,425 INFO L78 Accepts]: Start accepts. Automaton has 8554 states and 10894 transitions. Word has length 149 [2020-10-13 08:28:18,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:28:18,425 INFO L479 AbstractCegarLoop]: Abstraction has 8554 states and 10894 transitions. [2020-10-13 08:28:18,425 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:28:18,426 INFO L276 IsEmpty]: Start isEmpty. Operand 8554 states and 10894 transitions. [2020-10-13 08:28:18,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-10-13 08:28:18,428 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:28:18,429 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:28:18,431 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 08:28:18,431 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:28:18,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:28:18,431 INFO L82 PathProgramCache]: Analyzing trace with hash -698741080, now seen corresponding path program 1 times [2020-10-13 08:28:18,432 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:28:18,432 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1961906293] [2020-10-13 08:28:18,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:28:18,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:28:18,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:28:18,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:28:19,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:28:19,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-13 08:28:19,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:28:19,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 660 [2020-10-13 08:28:19,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:28:19,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:28:19,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-10-13 08:28:19,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-13 08:28:19,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:28:19,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:28:19,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:28:19,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:28:19,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:28:19,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:28:19,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:28:19,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:28:19,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:28:19,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:28:19,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:28:19,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:28:19,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:28:19,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:28:19,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:28:19,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:28:19,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:28:19,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-13 08:28:19,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:28:19,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-13 08:28:19,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:28:19,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:28:19,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:28:19,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-13 08:28:19,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:28:19,419 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 54 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:28:19,419 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1961906293] [2020-10-13 08:28:19,421 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:28:19,421 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 08:28:19,422 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965487954] [2020-10-13 08:28:19,422 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 08:28:19,422 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:28:19,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 08:28:19,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:28:19,424 INFO L87 Difference]: Start difference. First operand 8554 states and 10894 transitions. Second operand 6 states. [2020-10-13 08:28:34,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:28:34,878 INFO L93 Difference]: Finished difference Result 21750 states and 28387 transitions. [2020-10-13 08:28:34,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 08:28:34,879 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 150 [2020-10-13 08:28:34,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:28:34,933 INFO L225 Difference]: With dead ends: 21750 [2020-10-13 08:28:34,933 INFO L226 Difference]: Without dead ends: 13202 [2020-10-13 08:28:34,954 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 08:28:34,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13202 states. [2020-10-13 08:28:35,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13202 to 13195. [2020-10-13 08:28:35,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13195 states. [2020-10-13 08:28:35,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13195 states to 13195 states and 16382 transitions. [2020-10-13 08:28:35,220 INFO L78 Accepts]: Start accepts. Automaton has 13195 states and 16382 transitions. Word has length 150 [2020-10-13 08:28:35,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:28:35,221 INFO L479 AbstractCegarLoop]: Abstraction has 13195 states and 16382 transitions. [2020-10-13 08:28:35,221 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 08:28:35,221 INFO L276 IsEmpty]: Start isEmpty. Operand 13195 states and 16382 transitions. [2020-10-13 08:28:35,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2020-10-13 08:28:35,227 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:28:35,227 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:28:35,228 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 08:28:35,228 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:28:35,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:28:35,229 INFO L82 PathProgramCache]: Analyzing trace with hash -85296916, now seen corresponding path program 1 times [2020-10-13 08:28:35,229 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:28:35,230 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2143928239] [2020-10-13 08:28:35,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:28:35,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:28:35,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:28:35,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:28:35,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:28:36,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:28:37,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:28:39,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:28:39,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 239 [2020-10-13 08:28:39,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 08:28:39,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4135 [2020-10-13 08:28:39,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:28:39,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:28:39,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 177 [2020-10-13 08:28:39,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-13 08:28:39,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:28:39,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:28:39,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:28:39,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:28:39,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:28:39,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:28:39,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:28:39,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:28:39,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:28:39,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:28:39,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:28:39,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:28:39,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:28:39,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:28:39,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:28:39,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:28:39,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:28:39,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-13 08:28:39,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:28:39,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 08:28:39,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:28:39,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:28:39,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:28:39,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:28:39,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:28:39,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-13 08:28:39,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:28:39,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:28:39,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:28:39,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-13 08:28:39,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:28:39,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-13 08:28:39,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:28:39,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:28:39,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:28:39,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-13 08:28:39,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:28:39,745 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 111 proven. 2 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2020-10-13 08:28:39,745 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2143928239] [2020-10-13 08:28:39,746 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:28:39,746 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:28:39,747 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059917233] [2020-10-13 08:28:39,748 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:28:39,748 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:28:39,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:28:39,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:28:39,748 INFO L87 Difference]: Start difference. First operand 13195 states and 16382 transitions. Second operand 5 states. [2020-10-13 08:28:52,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:28:52,228 INFO L93 Difference]: Finished difference Result 33354 states and 42533 transitions. [2020-10-13 08:28:52,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:28:52,230 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 227 [2020-10-13 08:28:52,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:28:52,304 INFO L225 Difference]: With dead ends: 33354 [2020-10-13 08:28:52,305 INFO L226 Difference]: Without dead ends: 20165 [2020-10-13 08:28:52,339 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:28:52,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20165 states. [2020-10-13 08:28:52,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20165 to 20165. [2020-10-13 08:28:52,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20165 states. [2020-10-13 08:28:52,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20165 states to 20165 states and 24201 transitions. [2020-10-13 08:28:52,833 INFO L78 Accepts]: Start accepts. Automaton has 20165 states and 24201 transitions. Word has length 227 [2020-10-13 08:28:52,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:28:52,834 INFO L479 AbstractCegarLoop]: Abstraction has 20165 states and 24201 transitions. [2020-10-13 08:28:52,834 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:28:52,834 INFO L276 IsEmpty]: Start isEmpty. Operand 20165 states and 24201 transitions. [2020-10-13 08:28:52,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2020-10-13 08:28:52,842 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:28:52,842 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:28:52,842 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 08:28:52,842 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:28:52,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:28:52,843 INFO L82 PathProgramCache]: Analyzing trace with hash -1193629496, now seen corresponding path program 1 times [2020-10-13 08:28:52,843 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:28:52,843 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [889559691] [2020-10-13 08:28:52,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:28:52,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:28:52,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:28:53,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:28:53,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:28:53,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:28:53,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 273 [2020-10-13 08:28:53,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:28:53,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 948 [2020-10-13 08:28:53,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:28:53,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:28:53,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-13 08:28:53,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-13 08:28:53,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:28:53,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:28:53,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:28:53,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:28:53,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:28:53,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:28:53,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:28:53,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:28:53,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:28:53,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:28:53,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:28:53,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:28:53,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:28:54,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:28:54,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:28:54,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:28:54,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:28:54,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 08:28:54,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:28:54,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-13 08:28:54,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:28:54,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:28:54,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:28:54,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-13 08:28:54,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:28:54,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-13 08:28:54,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:28:54,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:28:54,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:28:54,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:28:54,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-13 08:28:54,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:28:54,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 286 [2020-10-13 08:28:54,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:28:54,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:28:54,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:28:54,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-13 08:28:54,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:28:54,893 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 182 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 08:28:54,894 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [889559691] [2020-10-13 08:28:54,894 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:28:54,894 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 08:28:54,894 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188572872] [2020-10-13 08:28:54,895 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 08:28:54,895 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:28:54,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 08:28:54,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:28:54,895 INFO L87 Difference]: Start difference. First operand 20165 states and 24201 transitions. Second operand 6 states. [2020-10-13 08:29:06,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:29:06,051 INFO L93 Difference]: Finished difference Result 38908 states and 46798 transitions. [2020-10-13 08:29:06,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 08:29:06,053 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 261 [2020-10-13 08:29:06,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:29:06,113 INFO L225 Difference]: With dead ends: 38908 [2020-10-13 08:29:06,114 INFO L226 Difference]: Without dead ends: 19422 [2020-10-13 08:29:06,160 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-13 08:29:06,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19422 states. [2020-10-13 08:29:06,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19422 to 19387. [2020-10-13 08:29:06,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19387 states. [2020-10-13 08:29:06,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19387 states to 19387 states and 22631 transitions. [2020-10-13 08:29:06,499 INFO L78 Accepts]: Start accepts. Automaton has 19387 states and 22631 transitions. Word has length 261 [2020-10-13 08:29:06,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:29:06,499 INFO L479 AbstractCegarLoop]: Abstraction has 19387 states and 22631 transitions. [2020-10-13 08:29:06,499 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 08:29:06,499 INFO L276 IsEmpty]: Start isEmpty. Operand 19387 states and 22631 transitions. [2020-10-13 08:29:06,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2020-10-13 08:29:06,511 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:29:06,511 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:29:06,511 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 08:29:06,512 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:29:06,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:29:06,512 INFO L82 PathProgramCache]: Analyzing trace with hash -1725615077, now seen corresponding path program 1 times [2020-10-13 08:29:06,513 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:29:06,513 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1986884077] [2020-10-13 08:29:06,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:29:06,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:29:06,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:29:06,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:29:08,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:29:11,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:29:11,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 346 [2020-10-13 08:29:11,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:29:11,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4947 [2020-10-13 08:29:11,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:29:11,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:29:11,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-13 08:29:11,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-13 08:29:11,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:29:11,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:29:11,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:29:11,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:29:11,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:29:11,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:29:11,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:29:11,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:29:11,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:29:11,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:29:11,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:29:11,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:29:11,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:29:11,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:29:11,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:29:11,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:29:11,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:29:11,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-13 08:29:11,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:29:11,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-13 08:29:11,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:29:11,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:29:11,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:29:11,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:29:11,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:29:11,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-10-13 08:29:11,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:29:11,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:29:11,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:29:11,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-13 08:29:11,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:29:11,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-13 08:29:11,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:29:11,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:29:11,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:29:11,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-13 08:29:11,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:29:12,027 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 111 proven. 2 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2020-10-13 08:29:12,027 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1986884077] [2020-10-13 08:29:12,027 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:29:12,028 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 08:29:12,028 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833922517] [2020-10-13 08:29:12,028 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 08:29:12,029 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:29:12,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 08:29:12,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:29:12,029 INFO L87 Difference]: Start difference. First operand 19387 states and 22631 transitions. Second operand 6 states. [2020-10-13 08:29:29,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:29:29,306 INFO L93 Difference]: Finished difference Result 64361 states and 79147 transitions. [2020-10-13 08:29:29,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 08:29:29,311 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 334 [2020-10-13 08:29:29,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:29:29,493 INFO L225 Difference]: With dead ends: 64361 [2020-10-13 08:29:29,493 INFO L226 Difference]: Without dead ends: 45747 [2020-10-13 08:29:29,533 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 08:29:29,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45747 states. [2020-10-13 08:29:30,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45747 to 43441. [2020-10-13 08:29:30,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43441 states. [2020-10-13 08:29:30,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43441 states to 43441 states and 53374 transitions. [2020-10-13 08:29:30,463 INFO L78 Accepts]: Start accepts. Automaton has 43441 states and 53374 transitions. Word has length 334 [2020-10-13 08:29:30,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:29:30,464 INFO L479 AbstractCegarLoop]: Abstraction has 43441 states and 53374 transitions. [2020-10-13 08:29:30,464 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 08:29:30,464 INFO L276 IsEmpty]: Start isEmpty. Operand 43441 states and 53374 transitions. [2020-10-13 08:29:30,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 402 [2020-10-13 08:29:30,494 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:29:30,495 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:29:30,495 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 08:29:30,496 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:29:30,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:29:30,496 INFO L82 PathProgramCache]: Analyzing trace with hash -1029038416, now seen corresponding path program 1 times [2020-10-13 08:29:30,496 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:29:30,497 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1581220836] [2020-10-13 08:29:30,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:29:30,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:29:30,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:29:30,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:29:32,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:29:33,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:29:35,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:29:35,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 413 [2020-10-13 08:29:35,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 08:29:35,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4871 [2020-10-13 08:29:35,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:29:35,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:29:35,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 351 [2020-10-13 08:29:35,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 08:29:35,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 08:29:35,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:29:35,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:29:35,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:29:35,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:29:35,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:29:35,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:29:35,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:29:35,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:29:35,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:29:35,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:29:35,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:29:35,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:29:35,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:29:35,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:29:35,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:29:35,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:29:35,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-13 08:29:35,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:29:35,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-13 08:29:35,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:29:35,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:29:35,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:29:35,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:29:35,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:29:35,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-13 08:29:35,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:29:35,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:29:35,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:29:35,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 191 [2020-10-13 08:29:35,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:29:35,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-13 08:29:35,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:29:35,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:29:35,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:29:35,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 185 [2020-10-13 08:29:35,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:29:36,144 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 111 proven. 2 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2020-10-13 08:29:36,144 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1581220836] [2020-10-13 08:29:36,145 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:29:36,145 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:29:36,145 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389173541] [2020-10-13 08:29:36,145 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:29:36,145 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:29:36,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:29:36,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:29:36,146 INFO L87 Difference]: Start difference. First operand 43441 states and 53374 transitions. Second operand 5 states. [2020-10-13 08:29:45,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:29:45,743 INFO L93 Difference]: Finished difference Result 76076 states and 94656 transitions. [2020-10-13 08:29:45,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:29:45,745 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 401 [2020-10-13 08:29:45,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:29:45,860 INFO L225 Difference]: With dead ends: 76076 [2020-10-13 08:29:45,860 INFO L226 Difference]: Without dead ends: 43446 [2020-10-13 08:29:45,899 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:29:45,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43446 states. [2020-10-13 08:29:46,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43446 to 43441. [2020-10-13 08:29:46,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43441 states. [2020-10-13 08:29:46,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43441 states to 43441 states and 53368 transitions. [2020-10-13 08:29:46,780 INFO L78 Accepts]: Start accepts. Automaton has 43441 states and 53368 transitions. Word has length 401 [2020-10-13 08:29:46,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:29:46,781 INFO L479 AbstractCegarLoop]: Abstraction has 43441 states and 53368 transitions. [2020-10-13 08:29:46,781 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:29:46,781 INFO L276 IsEmpty]: Start isEmpty. Operand 43441 states and 53368 transitions. [2020-10-13 08:29:46,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 685 [2020-10-13 08:29:46,866 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:29:46,867 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:29:46,867 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 08:29:46,867 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:29:46,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:29:46,868 INFO L82 PathProgramCache]: Analyzing trace with hash -110679001, now seen corresponding path program 1 times [2020-10-13 08:29:46,868 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:29:46,868 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [827384080] [2020-10-13 08:29:46,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:29:46,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:29:47,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:29:47,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:29:49,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:29:49,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:29:50,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:29:52,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:29:52,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 700 [2020-10-13 08:29:52,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 08:29:52,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5041 [2020-10-13 08:29:52,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:29:52,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:29:52,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 635 [2020-10-13 08:29:52,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-13 08:29:52,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:29:52,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:29:52,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:29:52,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:29:52,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:29:52,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:29:52,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:29:52,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:29:52,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:29:52,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:29:52,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:29:52,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:29:52,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:29:52,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:29:52,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:29:52,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:29:52,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:29:52,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-13 08:29:52,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:29:52,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-13 08:29:52,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:29:52,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:29:52,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:29:52,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:29:52,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:29:52,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-10-13 08:29:52,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:29:52,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:29:52,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:29:52,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-13 08:29:52,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:29:52,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 08:29:52,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:29:52,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:29:52,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:29:52,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:29:52,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:29:52,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2020-10-13 08:29:52,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:29:52,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:29:52,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:29:52,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 353 [2020-10-13 08:29:52,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:29:52,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 240 [2020-10-13 08:29:52,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:29:52,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:29:52,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:29:52,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 344 [2020-10-13 08:29:52,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:29:52,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 08:29:52,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:29:52,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:29:52,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:29:52,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-13 08:29:52,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:29:52,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-13 08:29:52,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:29:52,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:29:52,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:29:52,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-13 08:29:52,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:29:53,212 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 168 proven. 3 refuted. 0 times theorem prover too weak. 390 trivial. 0 not checked. [2020-10-13 08:29:53,212 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [827384080] [2020-10-13 08:29:53,213 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:29:53,213 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:29:53,213 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054645125] [2020-10-13 08:29:53,214 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:29:53,215 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:29:53,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:29:53,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:29:53,216 INFO L87 Difference]: Start difference. First operand 43441 states and 53368 transitions. Second operand 5 states. [2020-10-13 08:30:11,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:30:11,964 INFO L93 Difference]: Finished difference Result 96163 states and 121185 transitions. [2020-10-13 08:30:11,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:30:11,967 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 684 [2020-10-13 08:30:11,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:30:12,138 INFO L225 Difference]: With dead ends: 96163 [2020-10-13 08:30:12,138 INFO L226 Difference]: Without dead ends: 53495 [2020-10-13 08:30:12,186 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:30:12,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53495 states. [2020-10-13 08:30:13,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53495 to 52728. [2020-10-13 08:30:13,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52728 states. [2020-10-13 08:30:13,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52728 states to 52728 states and 64705 transitions. [2020-10-13 08:30:13,245 INFO L78 Accepts]: Start accepts. Automaton has 52728 states and 64705 transitions. Word has length 684 [2020-10-13 08:30:13,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:30:13,247 INFO L479 AbstractCegarLoop]: Abstraction has 52728 states and 64705 transitions. [2020-10-13 08:30:13,247 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:30:13,247 INFO L276 IsEmpty]: Start isEmpty. Operand 52728 states and 64705 transitions. [2020-10-13 08:30:13,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 907 [2020-10-13 08:30:13,371 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:30:13,372 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:30:13,373 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 08:30:13,374 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:30:13,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:30:13,376 INFO L82 PathProgramCache]: Analyzing trace with hash 2010901357, now seen corresponding path program 1 times [2020-10-13 08:30:13,376 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:30:13,377 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2095691256] [2020-10-13 08:30:13,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:30:13,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:30:13,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:30:13,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:30:18,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:30:18,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 922 [2020-10-13 08:30:18,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:30:18,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-13 08:30:18,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:30:18,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 08:30:18,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 08:30:18,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 159 [2020-10-13 08:30:18,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:30:18,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:30:18,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:30:18,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:30:18,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:30:18,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:30:18,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:30:18,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:30:18,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:30:18,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:30:18,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:30:18,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:30:18,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:30:18,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:30:18,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:30:18,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:30:18,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:30:18,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-13 08:30:18,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:30:18,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 192 [2020-10-13 08:30:18,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:30:18,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:30:18,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:30:18,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-13 08:30:18,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:30:19,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2020-10-13 08:30:19,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:30:19,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:30:19,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:30:19,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 696 [2020-10-13 08:30:19,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:30:19,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 462 [2020-10-13 08:30:19,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:30:19,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:30:19,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 693 [2020-10-13 08:30:19,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:30:19,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:30:19,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 08:30:19,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:30:19,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:30:20,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:30:20,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 408 [2020-10-13 08:30:20,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:30:20,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-13 08:30:20,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:30:20,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:30:20,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:30:20,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:30:20,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:30:20,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-13 08:30:20,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:30:20,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:30:20,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:30:20,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-10-13 08:30:20,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:30:20,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-13 08:30:20,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:30:20,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:30:20,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:30:20,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:30:20,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:30:20,803 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 110 proven. 148 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-13 08:30:20,803 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2095691256] [2020-10-13 08:30:20,804 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:30:20,804 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:30:20,804 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785869209] [2020-10-13 08:30:20,805 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:30:20,805 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:30:20,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:30:20,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:30:20,805 INFO L87 Difference]: Start difference. First operand 52728 states and 64705 transitions. Second operand 7 states. [2020-10-13 08:30:38,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:30:38,583 INFO L93 Difference]: Finished difference Result 120518 states and 150301 transitions. [2020-10-13 08:30:38,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 08:30:38,586 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 906 [2020-10-13 08:30:38,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:30:38,740 INFO L225 Difference]: With dead ends: 120518 [2020-10-13 08:30:38,741 INFO L226 Difference]: Without dead ends: 77064 [2020-10-13 08:30:38,799 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-13 08:30:38,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77064 states. [2020-10-13 08:30:39,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77064 to 77057. [2020-10-13 08:30:39,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77057 states. [2020-10-13 08:30:39,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77057 states to 77057 states and 93877 transitions. [2020-10-13 08:30:39,998 INFO L78 Accepts]: Start accepts. Automaton has 77057 states and 93877 transitions. Word has length 906 [2020-10-13 08:30:39,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:30:39,998 INFO L479 AbstractCegarLoop]: Abstraction has 77057 states and 93877 transitions. [2020-10-13 08:30:39,999 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:30:39,999 INFO L276 IsEmpty]: Start isEmpty. Operand 77057 states and 93877 transitions. [2020-10-13 08:30:40,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 975 [2020-10-13 08:30:40,093 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:30:40,094 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:30:40,094 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 08:30:40,094 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:30:40,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:30:40,095 INFO L82 PathProgramCache]: Analyzing trace with hash 852687944, now seen corresponding path program 1 times [2020-10-13 08:30:40,095 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:30:40,095 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [221468941] [2020-10-13 08:30:40,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:30:40,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:30:40,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:30:40,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:30:41,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:30:45,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:30:45,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 992 [2020-10-13 08:30:45,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:30:45,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 08:30:45,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:30:45,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 08:30:45,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 08:30:45,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-13 08:30:45,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:30:45,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:30:45,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:30:45,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:30:45,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:30:45,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:30:45,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:30:45,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:30:45,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:30:45,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:30:45,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:30:45,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:30:45,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:30:45,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:30:45,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:30:45,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:30:45,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:30:45,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-13 08:30:45,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:30:45,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-13 08:30:45,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:30:45,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:30:45,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:30:45,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-13 08:30:45,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:30:45,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-10-13 08:30:45,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:30:45,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:30:45,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:30:45,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-13 08:30:45,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:30:45,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 08:30:45,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:30:45,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:30:45,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-13 08:30:45,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:30:45,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:30:45,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-10-13 08:30:46,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:30:46,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:30:46,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:30:46,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 696 [2020-10-13 08:30:46,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:30:46,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 237 [2020-10-13 08:30:46,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:30:46,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:30:46,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 693 [2020-10-13 08:30:46,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:30:46,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:30:46,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 08:30:46,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:30:46,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:30:46,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:30:46,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 408 [2020-10-13 08:30:46,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:30:46,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-13 08:30:46,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:30:46,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:30:46,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:30:46,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:30:46,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:30:46,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-13 08:30:46,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:30:46,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:30:46,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:30:46,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-10-13 08:30:46,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:30:46,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-13 08:30:46,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:30:46,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:30:46,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:30:46,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:30:46,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:30:47,779 INFO L134 CoverageAnalysis]: Checked inductivity of 459 backedges. 165 proven. 211 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2020-10-13 08:30:47,780 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [221468941] [2020-10-13 08:30:47,780 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:30:47,780 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:30:47,780 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655821027] [2020-10-13 08:30:47,781 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:30:47,781 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:30:47,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:30:47,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:30:47,782 INFO L87 Difference]: Start difference. First operand 77057 states and 93877 transitions. Second operand 7 states.