/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/Problem13_label51.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 08:42:20,644 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 08:42:20,647 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 08:42:20,671 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 08:42:20,672 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 08:42:20,673 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 08:42:20,674 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 08:42:20,676 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 08:42:20,678 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 08:42:20,679 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 08:42:20,679 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 08:42:20,681 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 08:42:20,681 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 08:42:20,682 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 08:42:20,683 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 08:42:20,684 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 08:42:20,685 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 08:42:20,686 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 08:42:20,688 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 08:42:20,690 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 08:42:20,691 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 08:42:20,692 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 08:42:20,694 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 08:42:20,695 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 08:42:20,697 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 08:42:20,698 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 08:42:20,698 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 08:42:20,699 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 08:42:20,699 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 08:42:20,700 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 08:42:20,701 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 08:42:20,701 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 08:42:20,702 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 08:42:20,703 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 08:42:20,704 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 08:42:20,704 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 08:42:20,705 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 08:42:20,705 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 08:42:20,706 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 08:42:20,707 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 08:42:20,707 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 08:42:20,708 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 08:42:20,732 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 08:42:20,733 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 08:42:20,734 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 08:42:20,734 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 08:42:20,735 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 08:42:20,735 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 08:42:20,735 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 08:42:20,735 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 08:42:20,735 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 08:42:20,736 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 08:42:20,736 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 08:42:20,736 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 08:42:20,736 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 08:42:20,736 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 08:42:20,737 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 08:42:20,737 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 08:42:20,737 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 08:42:20,737 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 08:42:20,738 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 08:42:20,738 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 08:42:20,738 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 08:42:20,738 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 08:42:20,738 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 08:42:20,739 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 08:42:20,739 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 08:42:20,739 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 08:42:20,739 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 08:42:20,740 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 08:42:20,740 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 08:42:20,740 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 08:42:21,065 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 08:42:21,084 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 08:42:21,088 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 08:42:21,091 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 08:42:21,092 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 08:42:21,093 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label51.c [2020-10-13 08:42:21,171 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/711299c99/0bc9d1bf1d9547bbb0662b9d183d2bf7/FLAG1d26ea83f [2020-10-13 08:42:22,023 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 08:42:22,024 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem13_label51.c [2020-10-13 08:42:22,076 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/711299c99/0bc9d1bf1d9547bbb0662b9d183d2bf7/FLAG1d26ea83f [2020-10-13 08:42:22,486 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/711299c99/0bc9d1bf1d9547bbb0662b9d183d2bf7 [2020-10-13 08:42:22,497 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 08:42:22,498 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 08:42:22,500 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 08:42:22,501 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 08:42:22,505 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 08:42:22,506 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:42:22" (1/1) ... [2020-10-13 08:42:22,510 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1613be08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:42:22, skipping insertion in model container [2020-10-13 08:42:22,510 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:42:22" (1/1) ... [2020-10-13 08:42:22,520 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 08:42:22,712 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 08:42:24,589 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 08:42:24,596 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 08:42:25,348 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 08:42:25,386 INFO L208 MainTranslator]: Completed translation [2020-10-13 08:42:25,388 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:42:25 WrapperNode [2020-10-13 08:42:25,388 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 08:42:25,390 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 08:42:25,397 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 08:42:25,397 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 08:42:25,415 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:42:25" (1/1) ... [2020-10-13 08:42:25,417 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:42:25" (1/1) ... [2020-10-13 08:42:25,507 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:42:25" (1/1) ... [2020-10-13 08:42:25,508 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:42:25" (1/1) ... [2020-10-13 08:42:25,640 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:42:25" (1/1) ... [2020-10-13 08:42:25,685 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:42:25" (1/1) ... [2020-10-13 08:42:25,723 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:42:25" (1/1) ... [2020-10-13 08:42:25,763 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 08:42:25,763 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 08:42:25,764 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 08:42:25,764 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 08:42:25,765 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:42:25" (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 08:42:25,854 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 08:42:25,854 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 08:42:25,855 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 08:42:25,855 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 08:42:25,855 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-13 08:42:25,855 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-13 08:42:25,856 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 08:42:25,856 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 08:42:25,856 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 08:42:25,856 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-13 08:42:25,856 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-13 08:42:25,857 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 08:42:25,857 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 08:42:25,857 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 08:42:25,857 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 08:42:25,857 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 08:42:25,858 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 08:42:38,233 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 08:42:38,234 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 08:42:38,254 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:42:38 BoogieIcfgContainer [2020-10-13 08:42:38,255 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 08:42:38,262 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 08:42:38,263 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 08:42:38,267 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 08:42:38,267 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 08:42:22" (1/3) ... [2020-10-13 08:42:38,270 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@695363ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:42:38, skipping insertion in model container [2020-10-13 08:42:38,270 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:42:25" (2/3) ... [2020-10-13 08:42:38,271 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@695363ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:42:38, skipping insertion in model container [2020-10-13 08:42:38,272 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:42:38" (3/3) ... [2020-10-13 08:42:38,275 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem13_label51.c [2020-10-13 08:42:38,284 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 08:42:38,293 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 08:42:38,308 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 08:42:38,341 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 08:42:38,341 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 08:42:38,341 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 08:42:38,341 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 08:42:38,341 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 08:42:38,342 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 08:42:38,342 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 08:42:38,342 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 08:42:38,389 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states. [2020-10-13 08:42:38,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-13 08:42:38,398 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:42:38,400 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] [2020-10-13 08:42:38,401 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:42:38,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:42:38,408 INFO L82 PathProgramCache]: Analyzing trace with hash 90476039, now seen corresponding path program 1 times [2020-10-13 08:42:38,419 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:42:38,420 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1845798511] [2020-10-13 08:42:38,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:42:38,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:42:38,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:42:39,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:42:39,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 08:42:39,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:42:39,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 490 [2020-10-13 08:42:39,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:42:39,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 08:42:39,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 08:42:39,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-13 08:42:39,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 08:42:39,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:42:39,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:42:39,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:42:39,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:42:39,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:42:39,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:42:39,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-13 08:42:39,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:42:39,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:42:39,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:42:39,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:42:39,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 08:42:39,343 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 08:42:39,345 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1845798511] [2020-10-13 08:42:39,348 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 08:42:39,349 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 08:42:39,350 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254294508] [2020-10-13 08:42:39,361 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 08:42:39,361 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:42:39,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 08:42:39,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 08:42:39,390 INFO L87 Difference]: Start difference. First operand 1119 states. Second operand 4 states. [2020-10-13 08:42:58,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:42:58,552 INFO L93 Difference]: Finished difference Result 3230 states and 5909 transitions. [2020-10-13 08:42:58,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:42:58,560 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2020-10-13 08:42:58,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:42:58,596 INFO L225 Difference]: With dead ends: 3230 [2020-10-13 08:42:58,596 INFO L226 Difference]: Without dead ends: 2026 [2020-10-13 08:42:58,607 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:42:58,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2026 states. [2020-10-13 08:42:58,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2026 to 2009. [2020-10-13 08:42:58,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2009 states. [2020-10-13 08:42:58,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2009 states to 2009 states and 3291 transitions. [2020-10-13 08:42:58,790 INFO L78 Accepts]: Start accepts. Automaton has 2009 states and 3291 transitions. Word has length 30 [2020-10-13 08:42:58,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:42:58,791 INFO L479 AbstractCegarLoop]: Abstraction has 2009 states and 3291 transitions. [2020-10-13 08:42:58,791 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 08:42:58,792 INFO L276 IsEmpty]: Start isEmpty. Operand 2009 states and 3291 transitions. [2020-10-13 08:42:58,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-13 08:42:58,801 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:42:58,801 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:42:58,802 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 08:42:58,802 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:42:58,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:42:58,804 INFO L82 PathProgramCache]: Analyzing trace with hash 1119881379, now seen corresponding path program 1 times [2020-10-13 08:42:58,804 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:42:58,804 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [621007503] [2020-10-13 08:42:58,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:42:58,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:42:58,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:42:59,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:42:59,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:42:59,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-13 08:42:59,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:42:59,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1084 [2020-10-13 08:42:59,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:42:59,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:42:59,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-13 08:42:59,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-13 08:42:59,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:43:00,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:43:00,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:43:00,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:43:00,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:43:00,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:43:00,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:43:00,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:43:00,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:43:00,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:43:00,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:43:00,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:43:00,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:43:00,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:43:00,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:43:00,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:43:00,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:43:00,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 08:43:00,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:43:00,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-13 08:43:00,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:43:00,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:43:00,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:43:00,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-13 08:43:00,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:43:00,224 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:43:00,224 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [621007503] [2020-10-13 08:43:00,225 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:43:00,225 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:43:00,226 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327380384] [2020-10-13 08:43:00,228 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:43:00,228 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:43:00,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:43:00,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:43:00,229 INFO L87 Difference]: Start difference. First operand 2009 states and 3291 transitions. Second operand 5 states. [2020-10-13 08:43:18,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:43:18,153 INFO L93 Difference]: Finished difference Result 5850 states and 9720 transitions. [2020-10-13 08:43:18,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:43:18,155 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 105 [2020-10-13 08:43:18,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:43:18,176 INFO L225 Difference]: With dead ends: 5850 [2020-10-13 08:43:18,176 INFO L226 Difference]: Without dead ends: 3847 [2020-10-13 08:43:18,182 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 08:43:18,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3847 states. [2020-10-13 08:43:18,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3847 to 3760. [2020-10-13 08:43:18,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3760 states. [2020-10-13 08:43:18,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3760 states to 3760 states and 6154 transitions. [2020-10-13 08:43:18,287 INFO L78 Accepts]: Start accepts. Automaton has 3760 states and 6154 transitions. Word has length 105 [2020-10-13 08:43:18,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:43:18,288 INFO L479 AbstractCegarLoop]: Abstraction has 3760 states and 6154 transitions. [2020-10-13 08:43:18,288 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:43:18,289 INFO L276 IsEmpty]: Start isEmpty. Operand 3760 states and 6154 transitions. [2020-10-13 08:43:18,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-10-13 08:43:18,292 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:43:18,292 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:43:18,293 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 08:43:18,293 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:43:18,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:43:18,293 INFO L82 PathProgramCache]: Analyzing trace with hash 638284079, now seen corresponding path program 1 times [2020-10-13 08:43:18,294 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:43:18,294 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1674808089] [2020-10-13 08:43:18,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:43:18,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:43:18,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:43:18,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:43:19,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:43:19,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-13 08:43:19,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:43:19,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1221 [2020-10-13 08:43:19,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:43:19,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:43:19,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 111 [2020-10-13 08:43:19,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-13 08:43:19,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:43:19,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:43:19,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:43:19,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:43:19,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:43:19,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:43:19,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:43:19,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:43:19,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:43:19,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:43:19,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:43:19,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:43:19,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 08:43:19,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:43:19,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:43:19,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:43:19,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:43:19,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-13 08:43:19,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:43:19,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-10-13 08:43:19,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:43:19,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:43:19,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:43:19,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-13 08:43:19,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:43:19,978 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:43:19,979 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1674808089] [2020-10-13 08:43:19,979 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:43:19,979 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:43:19,980 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634867085] [2020-10-13 08:43:19,982 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:43:19,982 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:43:19,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:43:19,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:43:19,984 INFO L87 Difference]: Start difference. First operand 3760 states and 6154 transitions. Second operand 5 states. [2020-10-13 08:43:37,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:43:37,057 INFO L93 Difference]: Finished difference Result 10835 states and 18051 transitions. [2020-10-13 08:43:37,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:43:37,059 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 131 [2020-10-13 08:43:37,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:43:37,099 INFO L225 Difference]: With dead ends: 10835 [2020-10-13 08:43:37,100 INFO L226 Difference]: Without dead ends: 7081 [2020-10-13 08:43:37,111 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 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 08:43:37,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7081 states. [2020-10-13 08:43:37,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7081 to 7046. [2020-10-13 08:43:37,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7046 states. [2020-10-13 08:43:37,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7046 states to 7046 states and 10131 transitions. [2020-10-13 08:43:37,318 INFO L78 Accepts]: Start accepts. Automaton has 7046 states and 10131 transitions. Word has length 131 [2020-10-13 08:43:37,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:43:37,320 INFO L479 AbstractCegarLoop]: Abstraction has 7046 states and 10131 transitions. [2020-10-13 08:43:37,321 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:43:37,321 INFO L276 IsEmpty]: Start isEmpty. Operand 7046 states and 10131 transitions. [2020-10-13 08:43:37,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2020-10-13 08:43:37,334 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:43:37,335 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 08:43:37,335 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 08:43:37,335 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:43:37,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:43:37,336 INFO L82 PathProgramCache]: Analyzing trace with hash -1785152477, now seen corresponding path program 1 times [2020-10-13 08:43:37,336 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:43:37,340 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1713893319] [2020-10-13 08:43:37,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:43:37,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:43:37,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:43:37,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:43:38,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:43:39,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:43:39,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:43:42,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:43:42,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 234 [2020-10-13 08:43:42,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 08:43:42,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-13 08:43:42,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:43:42,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:43:42,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 204 [2020-10-13 08:43:42,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 08:43:42,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:43:42,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:43:42,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:43:42,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:43:42,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:43:42,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:43:42,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:43:42,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 08:43:42,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:43:42,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:43:42,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:43:42,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:43:42,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:43:42,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:43:42,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:43:42,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:43:42,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:43:42,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-13 08:43:42,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:43:42,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-13 08:43:42,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:43:42,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:43:42,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:43:42,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:43:42,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:43:42,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-13 08:43:42,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:43:42,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:43:42,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:43:42,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-13 08:43:42,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:43:42,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-13 08:43:42,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:43:42,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:43:42,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:43:42,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-13 08:43:42,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:43:42,817 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 47 proven. 2 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2020-10-13 08:43:42,818 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1713893319] [2020-10-13 08:43:42,818 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:43:42,818 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:43:42,819 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866716129] [2020-10-13 08:43:42,820 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:43:42,820 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:43:42,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:43:42,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:43:42,821 INFO L87 Difference]: Start difference. First operand 7046 states and 10131 transitions. Second operand 5 states. [2020-10-13 08:43:55,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:43:55,662 INFO L93 Difference]: Finished difference Result 14113 states and 20304 transitions. [2020-10-13 08:43:55,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:43:55,665 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 222 [2020-10-13 08:43:55,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:43:55,699 INFO L225 Difference]: With dead ends: 14113 [2020-10-13 08:43:55,699 INFO L226 Difference]: Without dead ends: 7050 [2020-10-13 08:43:55,717 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 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 08:43:55,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7050 states. [2020-10-13 08:43:55,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7050 to 7046. [2020-10-13 08:43:55,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7046 states. [2020-10-13 08:43:55,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7046 states to 7046 states and 10127 transitions. [2020-10-13 08:43:55,899 INFO L78 Accepts]: Start accepts. Automaton has 7046 states and 10127 transitions. Word has length 222 [2020-10-13 08:43:55,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:43:55,901 INFO L479 AbstractCegarLoop]: Abstraction has 7046 states and 10127 transitions. [2020-10-13 08:43:55,901 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:43:55,901 INFO L276 IsEmpty]: Start isEmpty. Operand 7046 states and 10127 transitions. [2020-10-13 08:43:55,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2020-10-13 08:43:55,906 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:43:55,907 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:43:55,907 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 08:43:55,908 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:43:55,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:43:55,908 INFO L82 PathProgramCache]: Analyzing trace with hash 202756692, now seen corresponding path program 1 times [2020-10-13 08:43:55,909 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:43:55,909 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [765879414] [2020-10-13 08:43:55,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:43:55,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:43:56,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:43:56,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:43:57,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:43:57,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 233 [2020-10-13 08:43:57,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:43:57,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1362 [2020-10-13 08:43:57,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:43:57,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:43:57,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 203 [2020-10-13 08:43:57,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-13 08:43:57,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:43:57,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:43:57,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:43:57,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:43:57,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:43:57,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:43:57,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:43:57,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:43:57,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:43:57,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:43:57,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:43:57,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:43:57,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:43:57,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:43:57,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:43:57,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:43:57,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:43:57,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-13 08:43:57,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:43:57,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 189 [2020-10-13 08:43:57,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:43:57,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:43:57,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:43:57,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 188 [2020-10-13 08:43:57,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-13 08:43:57,884 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:43:57,890 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [765879414] [2020-10-13 08:43:57,890 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:43:57,891 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:43:57,891 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962274257] [2020-10-13 08:43:57,892 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:43:57,892 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:43:57,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:43:57,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:43:57,893 INFO L87 Difference]: Start difference. First operand 7046 states and 10127 transitions. Second operand 5 states. [2020-10-13 08:44:18,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:44:18,886 INFO L93 Difference]: Finished difference Result 17451 states and 25397 transitions. [2020-10-13 08:44:18,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:44:18,890 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 223 [2020-10-13 08:44:18,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:44:18,942 INFO L225 Difference]: With dead ends: 17451 [2020-10-13 08:44:18,942 INFO L226 Difference]: Without dead ends: 10411 [2020-10-13 08:44:18,961 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 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 08:44:18,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10411 states. [2020-10-13 08:44:19,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10411 to 10325. [2020-10-13 08:44:19,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10325 states. [2020-10-13 08:44:19,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10325 states to 10325 states and 14950 transitions. [2020-10-13 08:44:19,245 INFO L78 Accepts]: Start accepts. Automaton has 10325 states and 14950 transitions. Word has length 223 [2020-10-13 08:44:19,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:44:19,246 INFO L479 AbstractCegarLoop]: Abstraction has 10325 states and 14950 transitions. [2020-10-13 08:44:19,246 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:44:19,246 INFO L276 IsEmpty]: Start isEmpty. Operand 10325 states and 14950 transitions. [2020-10-13 08:44:19,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2020-10-13 08:44:19,252 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:44:19,252 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 08:44:19,253 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 08:44:19,253 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:44:19,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:44:19,253 INFO L82 PathProgramCache]: Analyzing trace with hash 1301097006, now seen corresponding path program 1 times [2020-10-13 08:44:19,253 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:44:19,254 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2127883103] [2020-10-13 08:44:19,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:44:19,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:44:19,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:44:19,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:44:19,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:44:19,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:44:20,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:44:21,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:44:24,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:44:24,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 258 [2020-10-13 08:44:24,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 08:44:24,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-13 08:44:24,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:44:24,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:44:24,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 228 [2020-10-13 08:44:24,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-13 08:44:24,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 08:44:24,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:44:24,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:44:24,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:44:24,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:44:24,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:44:24,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:44:24,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:44:24,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:44:24,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:44:24,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:44:24,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:44:24,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:44:24,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:44:24,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:44:24,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:44:24,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:44:24,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-13 08:44:24,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:44:24,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-13 08:44:24,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:44:24,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:44:24,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:44:24,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:44:24,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:44:24,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-13 08:44:24,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:44:24,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:44:24,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:44:24,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-13 08:44:24,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:44:24,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-13 08:44:24,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:44:24,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:44:24,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:44:24,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-13 08:44:24,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:44:24,757 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 47 proven. 2 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2020-10-13 08:44:24,757 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2127883103] [2020-10-13 08:44:24,759 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:44:24,760 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:44:24,760 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069305632] [2020-10-13 08:44:24,761 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:44:24,761 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:44:24,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:44:24,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:44:24,762 INFO L87 Difference]: Start difference. First operand 10325 states and 14950 transitions. Second operand 5 states. [2020-10-13 08:44:47,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:44:47,114 INFO L93 Difference]: Finished difference Result 30417 states and 45339 transitions. [2020-10-13 08:44:47,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:44:47,117 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 246 [2020-10-13 08:44:47,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:44:47,198 INFO L225 Difference]: With dead ends: 30417 [2020-10-13 08:44:47,199 INFO L226 Difference]: Without dead ends: 20098 [2020-10-13 08:44:47,228 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 08:44:47,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20098 states. [2020-10-13 08:44:47,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20098 to 20091. [2020-10-13 08:44:47,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20091 states. [2020-10-13 08:44:47,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20091 states to 20091 states and 28444 transitions. [2020-10-13 08:44:47,715 INFO L78 Accepts]: Start accepts. Automaton has 20091 states and 28444 transitions. Word has length 246 [2020-10-13 08:44:47,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:44:47,716 INFO L479 AbstractCegarLoop]: Abstraction has 20091 states and 28444 transitions. [2020-10-13 08:44:47,716 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:44:47,716 INFO L276 IsEmpty]: Start isEmpty. Operand 20091 states and 28444 transitions. [2020-10-13 08:44:47,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2020-10-13 08:44:47,727 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:44:47,727 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 08:44:47,728 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 08:44:47,728 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:44:47,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:44:47,728 INFO L82 PathProgramCache]: Analyzing trace with hash -1977782678, now seen corresponding path program 1 times [2020-10-13 08:44:47,729 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:44:47,729 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1543274986] [2020-10-13 08:44:47,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:44:47,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:44:47,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:44:47,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:44:49,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:44:50,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:44:50,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:44:51,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:44:52,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:44:52,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 280 [2020-10-13 08:44:52,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 08:44:52,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-13 08:44:52,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:44:52,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:44:52,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 250 [2020-10-13 08:44:52,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 08:44:52,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:44:53,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:44:53,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:44:53,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:44:53,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:44:53,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:44:53,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:44:53,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:44:53,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:44:53,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:44:53,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:44:53,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:44:53,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:44:53,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:44:53,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:44:53,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:44:53,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:44:53,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-13 08:44:53,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:44:53,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 08:44:53,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:44:53,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:44:53,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:44:53,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:44:53,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:44:53,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-13 08:44:53,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:44:53,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:44:53,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:44:53,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-13 08:44:53,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:44:53,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-13 08:44:53,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:44:53,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:44:53,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:44:53,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-13 08:44:53,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:44:53,543 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 47 proven. 2 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2020-10-13 08:44:53,544 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1543274986] [2020-10-13 08:44:53,544 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:44:53,544 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:44:53,546 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975083655] [2020-10-13 08:44:53,546 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:44:53,547 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:44:53,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:44:53,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:44:53,548 INFO L87 Difference]: Start difference. First operand 20091 states and 28444 transitions. Second operand 5 states. [2020-10-13 08:45:15,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:45:15,903 INFO L93 Difference]: Finished difference Result 40200 states and 56956 transitions. [2020-10-13 08:45:15,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:45:15,907 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 268 [2020-10-13 08:45:15,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:45:15,997 INFO L225 Difference]: With dead ends: 40200 [2020-10-13 08:45:15,997 INFO L226 Difference]: Without dead ends: 20095 [2020-10-13 08:45:16,041 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:45:16,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20095 states. [2020-10-13 08:45:16,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20095 to 20091. [2020-10-13 08:45:16,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20091 states. [2020-10-13 08:45:16,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20091 states to 20091 states and 28438 transitions. [2020-10-13 08:45:16,567 INFO L78 Accepts]: Start accepts. Automaton has 20091 states and 28438 transitions. Word has length 268 [2020-10-13 08:45:16,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:45:16,569 INFO L479 AbstractCegarLoop]: Abstraction has 20091 states and 28438 transitions. [2020-10-13 08:45:16,569 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:45:16,569 INFO L276 IsEmpty]: Start isEmpty. Operand 20091 states and 28438 transitions. [2020-10-13 08:45:16,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2020-10-13 08:45:16,587 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:45:16,588 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 08:45:16,588 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 08:45:16,589 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:45:16,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:45:16,589 INFO L82 PathProgramCache]: Analyzing trace with hash 576329625, now seen corresponding path program 1 times [2020-10-13 08:45:16,590 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:45:16,590 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1622704528] [2020-10-13 08:45:16,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:45:16,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:45:16,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:45:16,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:45:16,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:45:17,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:45:18,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:45:19,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:45:20,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:45:21,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:45:21,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 290 [2020-10-13 08:45:21,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 08:45:21,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-13 08:45:21,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:45:21,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:45:21,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 260 [2020-10-13 08:45:21,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-13 08:45:21,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:45:21,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:45:21,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:45:21,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:45:21,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:45:21,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:45:21,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:45:21,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 08:45:21,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:45:21,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:45:21,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:45:21,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:45:21,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:45:21,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:45:21,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:45:21,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:45:21,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:45:21,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-13 08:45:21,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:45:21,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-13 08:45:21,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:45:21,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:45:21,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:45:21,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:45:21,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:45:21,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-13 08:45:21,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:45:21,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:45:22,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:45:22,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-13 08:45:22,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:45:22,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-13 08:45:22,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:45:22,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:45:22,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:45:22,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-13 08:45:22,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:45:22,171 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 47 proven. 2 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2020-10-13 08:45:22,172 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1622704528] [2020-10-13 08:45:22,172 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:45:22,172 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:45:22,173 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724549807] [2020-10-13 08:45:22,173 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:45:22,174 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:45:22,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:45:22,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:45:22,175 INFO L87 Difference]: Start difference. First operand 20091 states and 28438 transitions. Second operand 5 states. [2020-10-13 08:45:52,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:45:52,532 INFO L93 Difference]: Finished difference Result 49978 states and 74813 transitions. [2020-10-13 08:45:52,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:45:52,534 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 278 [2020-10-13 08:45:52,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:45:52,685 INFO L225 Difference]: With dead ends: 49978 [2020-10-13 08:45:52,686 INFO L226 Difference]: Without dead ends: 29893 [2020-10-13 08:45:52,731 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 08:45:52,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29893 states. [2020-10-13 08:45:53,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29893 to 29868. [2020-10-13 08:45:53,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29868 states. [2020-10-13 08:45:54,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29868 states to 29868 states and 43715 transitions. [2020-10-13 08:45:54,739 INFO L78 Accepts]: Start accepts. Automaton has 29868 states and 43715 transitions. Word has length 278 [2020-10-13 08:45:54,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:45:54,739 INFO L479 AbstractCegarLoop]: Abstraction has 29868 states and 43715 transitions. [2020-10-13 08:45:54,739 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:45:54,740 INFO L276 IsEmpty]: Start isEmpty. Operand 29868 states and 43715 transitions. [2020-10-13 08:45:54,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2020-10-13 08:45:54,783 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:45:54,784 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 08:45:54,784 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 08:45:54,784 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:45:54,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:45:54,785 INFO L82 PathProgramCache]: Analyzing trace with hash 623736006, now seen corresponding path program 1 times [2020-10-13 08:45:54,786 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:45:54,787 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1361713674] [2020-10-13 08:45:54,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:45:54,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:45:54,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:45:54,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:45:55,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:45:55,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:45:56,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:45:56,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:45:57,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:45:57,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:45:57,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 296 [2020-10-13 08:45:57,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 08:45:57,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2762 [2020-10-13 08:45:57,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:45:57,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:45:57,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 264 [2020-10-13 08:45:57,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:45:57,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:45:57,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:45:57,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:45:57,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:45:57,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:45:57,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:45:57,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:45:57,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 08:45:57,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:45:57,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:45:57,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:45:57,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:45:57,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:45:57,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:45:57,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:45:57,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:45:57,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:45:57,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-13 08:45:57,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:45:57,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 08:45:57,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:45:57,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:45:57,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:45:57,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:45:57,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:45:57,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-13 08:45:57,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:45:57,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:45:57,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:45:57,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-10-13 08:45:57,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:45:57,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-13 08:45:57,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:45:57,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:45:57,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 157 [2020-10-13 08:45:57,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:45:57,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:45:57,989 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2020-10-13 08:45:57,989 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1361713674] [2020-10-13 08:45:57,990 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 08:45:57,990 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 08:45:57,990 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280574141] [2020-10-13 08:45:57,992 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:45:57,992 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:45:57,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:45:57,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:45:57,993 INFO L87 Difference]: Start difference. First operand 29868 states and 43715 transitions. Second operand 5 states.