/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/Problem15_label07.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 08:57:51,708 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 08:57:51,711 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 08:57:51,753 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 08:57:51,754 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 08:57:51,762 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 08:57:51,764 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 08:57:51,768 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 08:57:51,771 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 08:57:51,774 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 08:57:51,774 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 08:57:51,775 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 08:57:51,776 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 08:57:51,778 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 08:57:51,782 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 08:57:51,784 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 08:57:51,785 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 08:57:51,787 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 08:57:51,789 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 08:57:51,797 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 08:57:51,799 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 08:57:51,800 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 08:57:51,801 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 08:57:51,802 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 08:57:51,814 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 08:57:51,815 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 08:57:51,815 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 08:57:51,821 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 08:57:51,821 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 08:57:51,826 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 08:57:51,826 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 08:57:51,827 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 08:57:51,830 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 08:57:51,831 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 08:57:51,832 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 08:57:51,832 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 08:57:51,833 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 08:57:51,833 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 08:57:51,834 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 08:57:51,835 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 08:57:51,835 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 08:57:51,836 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 08:57:51,877 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 08:57:51,878 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 08:57:51,879 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 08:57:51,879 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 08:57:51,879 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 08:57:51,880 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 08:57:51,880 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 08:57:51,880 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 08:57:51,880 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 08:57:51,880 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 08:57:51,881 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 08:57:51,881 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 08:57:51,881 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 08:57:51,881 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 08:57:51,881 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 08:57:51,882 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 08:57:51,882 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 08:57:51,882 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 08:57:51,882 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 08:57:51,882 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 08:57:51,883 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 08:57:51,883 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 08:57:51,883 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 08:57:51,883 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 08:57:51,883 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 08:57:51,884 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 08:57:51,884 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 08:57:51,884 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 08:57:51,884 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 08:57:51,884 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 08:57:52,203 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 08:57:52,217 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 08:57:52,221 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 08:57:52,223 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 08:57:52,223 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 08:57:52,224 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label07.c [2020-10-13 08:57:52,289 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8666dc86e/1a01be5a1b07488497c46225a9cacde6/FLAGf11705377 [2020-10-13 08:57:52,990 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 08:57:52,991 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label07.c [2020-10-13 08:57:53,011 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8666dc86e/1a01be5a1b07488497c46225a9cacde6/FLAGf11705377 [2020-10-13 08:57:53,125 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8666dc86e/1a01be5a1b07488497c46225a9cacde6 [2020-10-13 08:57:53,136 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 08:57:53,138 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 08:57:53,142 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 08:57:53,143 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 08:57:53,147 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 08:57:53,148 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:57:53" (1/1) ... [2020-10-13 08:57:53,152 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b68df5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:57:53, skipping insertion in model container [2020-10-13 08:57:53,152 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:57:53" (1/1) ... [2020-10-13 08:57:53,161 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 08:57:53,232 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 08:57:54,327 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 08:57:54,338 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 08:57:54,698 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 08:57:54,719 INFO L208 MainTranslator]: Completed translation [2020-10-13 08:57:54,720 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:57:54 WrapperNode [2020-10-13 08:57:54,720 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 08:57:54,721 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 08:57:54,721 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 08:57:54,721 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 08:57:54,736 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:57:54" (1/1) ... [2020-10-13 08:57:54,738 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:57:54" (1/1) ... [2020-10-13 08:57:54,785 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:57:54" (1/1) ... [2020-10-13 08:57:54,786 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:57:54" (1/1) ... [2020-10-13 08:57:54,873 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:57:54" (1/1) ... [2020-10-13 08:57:54,907 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:57:54" (1/1) ... [2020-10-13 08:57:54,922 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:57:54" (1/1) ... [2020-10-13 08:57:54,937 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 08:57:54,938 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 08:57:54,938 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 08:57:54,938 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 08:57:54,939 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:57:54" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 08:57:55,017 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 08:57:55,017 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 08:57:55,018 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 08:57:55,018 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 08:57:55,018 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 08:57:55,018 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 08:57:55,019 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 08:57:55,020 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 08:57:55,021 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 08:57:55,021 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 08:57:55,021 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 08:57:55,022 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 08:57:55,022 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 08:58:00,682 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 08:58:00,682 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 08:58:00,694 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:58:00 BoogieIcfgContainer [2020-10-13 08:58:00,695 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 08:58:00,697 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 08:58:00,697 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 08:58:00,701 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 08:58:00,702 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 08:57:53" (1/3) ... [2020-10-13 08:58:00,706 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23312880 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:58:00, skipping insertion in model container [2020-10-13 08:58:00,707 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:57:54" (2/3) ... [2020-10-13 08:58:00,707 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23312880 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:58:00, skipping insertion in model container [2020-10-13 08:58:00,707 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:58:00" (3/3) ... [2020-10-13 08:58:00,709 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem15_label07.c [2020-10-13 08:58:00,722 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 08:58:00,732 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 08:58:00,751 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 08:58:00,815 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 08:58:00,815 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 08:58:00,816 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 08:58:00,816 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 08:58:00,816 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 08:58:00,816 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 08:58:00,816 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 08:58:00,816 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 08:58:00,871 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states. [2020-10-13 08:58:00,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-13 08:58:00,878 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:58:00,879 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:58:00,880 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:58:00,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:58:00,887 INFO L82 PathProgramCache]: Analyzing trace with hash 1402015208, now seen corresponding path program 1 times [2020-10-13 08:58:00,895 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:58:00,896 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1053324633] [2020-10-13 08:58:00,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:58:01,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:58:01,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:58:01,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:58:01,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-13 08:58:01,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:58:01,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 290 [2020-10-13 08:58:01,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:58:01,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 08:58:01,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 08:58:01,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 08:58:01,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-13 08:58:01,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:58:01,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:58:01,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:58:01,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:58:01,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:58:01,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:58:01,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 08:58:01,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:58:01,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:58:01,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:58:01,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:58:01,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 08:58:01,515 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 08:58:01,517 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1053324633] [2020-10-13 08:58:01,519 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 08:58:01,519 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 08:58:01,520 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555770147] [2020-10-13 08:58:01,527 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 08:58:01,527 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:58:01,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 08:58:01,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 08:58:01,546 INFO L87 Difference]: Start difference. First operand 437 states. Second operand 4 states. [2020-10-13 08:58:09,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:58:09,837 INFO L93 Difference]: Finished difference Result 1224 states and 2200 transitions. [2020-10-13 08:58:09,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:58:09,839 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-10-13 08:58:09,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:58:09,879 INFO L225 Difference]: With dead ends: 1224 [2020-10-13 08:58:09,879 INFO L226 Difference]: Without dead ends: 708 [2020-10-13 08:58:09,889 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:58:09,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 708 states. [2020-10-13 08:58:09,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 708 to 694. [2020-10-13 08:58:09,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 694 states. [2020-10-13 08:58:09,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 694 states to 694 states and 1080 transitions. [2020-10-13 08:58:09,991 INFO L78 Accepts]: Start accepts. Automaton has 694 states and 1080 transitions. Word has length 16 [2020-10-13 08:58:09,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:58:09,992 INFO L479 AbstractCegarLoop]: Abstraction has 694 states and 1080 transitions. [2020-10-13 08:58:09,992 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 08:58:09,992 INFO L276 IsEmpty]: Start isEmpty. Operand 694 states and 1080 transitions. [2020-10-13 08:58:09,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-13 08:58:09,996 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:58:09,997 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 08:58:09,997 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 08:58:09,997 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:58:09,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:58:09,998 INFO L82 PathProgramCache]: Analyzing trace with hash -1747232409, now seen corresponding path program 1 times [2020-10-13 08:58:09,998 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:58:09,998 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [834490591] [2020-10-13 08:58:09,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:58:10,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:58:10,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:58:10,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:58:10,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:58:11,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:58:11,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-13 08:58:11,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:58:11,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1104 [2020-10-13 08:58:11,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:58:11,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:58:11,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-13 08:58:11,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 08:58:11,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 08:58:11,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:58:11,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:58:11,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:58:11,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:58:11,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:58:11,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:58:11,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 08:58:11,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:58:11,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:58:11,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:58:11,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:58:11,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:58:11,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:58:11,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:58:11,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:58:11,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:58:11,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-13 08:58:11,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:58:11,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-13 08:58:11,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:58:11,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:58:11,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:58:11,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-13 08:58:11,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-13 08:58:11,576 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:58:11,576 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [834490591] [2020-10-13 08:58:11,577 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:58:11,577 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 08:58:11,577 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035365217] [2020-10-13 08:58:11,579 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 08:58:11,579 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:58:11,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 08:58:11,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:58:11,580 INFO L87 Difference]: Start difference. First operand 694 states and 1080 transitions. Second operand 6 states. [2020-10-13 08:58:21,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:58:21,433 INFO L93 Difference]: Finished difference Result 2017 states and 3285 transitions. [2020-10-13 08:58:21,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 08:58:21,435 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 86 [2020-10-13 08:58:21,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:58:21,447 INFO L225 Difference]: With dead ends: 2017 [2020-10-13 08:58:21,448 INFO L226 Difference]: Without dead ends: 1329 [2020-10-13 08:58:21,461 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 08:58:21,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1329 states. [2020-10-13 08:58:21,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1329 to 1325. [2020-10-13 08:58:21,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1325 states. [2020-10-13 08:58:21,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1325 states to 1325 states and 1889 transitions. [2020-10-13 08:58:21,563 INFO L78 Accepts]: Start accepts. Automaton has 1325 states and 1889 transitions. Word has length 86 [2020-10-13 08:58:21,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:58:21,564 INFO L479 AbstractCegarLoop]: Abstraction has 1325 states and 1889 transitions. [2020-10-13 08:58:21,564 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 08:58:21,565 INFO L276 IsEmpty]: Start isEmpty. Operand 1325 states and 1889 transitions. [2020-10-13 08:58:21,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-10-13 08:58:21,570 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:58:21,571 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 08:58:21,571 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 08:58:21,571 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:58:21,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:58:21,572 INFO L82 PathProgramCache]: Analyzing trace with hash -748739898, now seen corresponding path program 1 times [2020-10-13 08:58:21,572 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:58:21,572 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [315501558] [2020-10-13 08:58:21,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:58:21,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:58:21,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:58:21,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:58:22,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:58:22,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:58:22,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-13 08:58:22,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:58:22,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1136 [2020-10-13 08:58:22,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:58:22,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:58:22,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 131 [2020-10-13 08:58:22,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 08:58:22,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:58:22,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:58:22,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:58:22,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:58:22,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:58:22,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:58:22,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:58:22,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:58:22,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:58:22,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:58:22,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:58:22,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:58:22,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:58:22,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:58:22,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:58:22,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:58:22,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:58:22,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-13 08:58:22,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:58:22,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-13 08:58:22,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:58:22,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:58:22,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:58:22,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-13 08:58:22,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:58:23,095 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:58:23,096 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [315501558] [2020-10-13 08:58:23,096 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:58:23,097 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:58:23,097 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308612105] [2020-10-13 08:58:23,098 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:58:23,099 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:58:23,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:58:23,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:58:23,100 INFO L87 Difference]: Start difference. First operand 1325 states and 1889 transitions. Second operand 5 states. [2020-10-13 08:58:33,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:58:33,233 INFO L93 Difference]: Finished difference Result 3271 states and 4905 transitions. [2020-10-13 08:58:33,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:58:33,235 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 139 [2020-10-13 08:58:33,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:58:33,248 INFO L225 Difference]: With dead ends: 3271 [2020-10-13 08:58:33,249 INFO L226 Difference]: Without dead ends: 2261 [2020-10-13 08:58:33,252 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:58:33,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2261 states. [2020-10-13 08:58:33,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2261 to 2261. [2020-10-13 08:58:33,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2261 states. [2020-10-13 08:58:33,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2261 states to 2261 states and 3246 transitions. [2020-10-13 08:58:33,318 INFO L78 Accepts]: Start accepts. Automaton has 2261 states and 3246 transitions. Word has length 139 [2020-10-13 08:58:33,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:58:33,319 INFO L479 AbstractCegarLoop]: Abstraction has 2261 states and 3246 transitions. [2020-10-13 08:58:33,320 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:58:33,320 INFO L276 IsEmpty]: Start isEmpty. Operand 2261 states and 3246 transitions. [2020-10-13 08:58:33,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-10-13 08:58:33,323 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:58:33,323 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 08:58:33,324 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 08:58:33,324 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:58:33,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:58:33,324 INFO L82 PathProgramCache]: Analyzing trace with hash 85514773, now seen corresponding path program 1 times [2020-10-13 08:58:33,325 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:58:33,325 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [66179781] [2020-10-13 08:58:33,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:58:33,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:58:33,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:58:33,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:58:35,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:58:35,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-13 08:58:35,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:58:35,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1684 [2020-10-13 08:58:35,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:58:35,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:58:35,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 153 [2020-10-13 08:58:35,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 08:58:35,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:58:35,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:58:35,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:58:35,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:58:35,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:58:35,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:58:35,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:58:35,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 08:58:35,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:58:35,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:58:35,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:58:35,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:58:35,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:58:35,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:58:35,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:58:35,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:58:35,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:58:35,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-13 08:58:35,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:58:35,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 184 [2020-10-13 08:58:35,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:58:35,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:58:35,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:58:35,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-13 08:58:35,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:58:35,488 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:58:35,489 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [66179781] [2020-10-13 08:58:35,490 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:58:35,490 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:58:35,490 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201632115] [2020-10-13 08:58:35,492 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:58:35,493 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:58:35,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:58:35,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:58:35,494 INFO L87 Difference]: Start difference. First operand 2261 states and 3246 transitions. Second operand 5 states. [2020-10-13 08:58:47,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:58:47,060 INFO L93 Difference]: Finished difference Result 6091 states and 9079 transitions. [2020-10-13 08:58:47,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:58:47,062 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 159 [2020-10-13 08:58:47,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:58:47,091 INFO L225 Difference]: With dead ends: 6091 [2020-10-13 08:58:47,091 INFO L226 Difference]: Without dead ends: 4145 [2020-10-13 08:58:47,098 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 08:58:47,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4145 states. [2020-10-13 08:58:47,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4145 to 4136. [2020-10-13 08:58:47,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4136 states. [2020-10-13 08:58:47,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4136 states to 4136 states and 5881 transitions. [2020-10-13 08:58:47,258 INFO L78 Accepts]: Start accepts. Automaton has 4136 states and 5881 transitions. Word has length 159 [2020-10-13 08:58:47,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:58:47,260 INFO L479 AbstractCegarLoop]: Abstraction has 4136 states and 5881 transitions. [2020-10-13 08:58:47,260 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:58:47,261 INFO L276 IsEmpty]: Start isEmpty. Operand 4136 states and 5881 transitions. [2020-10-13 08:58:47,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-10-13 08:58:47,268 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:58:47,269 INFO L422 BasicCegarLoop]: trace histogram [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, 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 08:58:47,269 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 08:58:47,270 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:58:47,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:58:47,270 INFO L82 PathProgramCache]: Analyzing trace with hash 405485859, now seen corresponding path program 1 times [2020-10-13 08:58:47,271 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:58:47,271 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [519359638] [2020-10-13 08:58:47,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:58:47,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:58:47,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:58:47,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:58:48,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:58:48,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:58:50,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:58:52,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:58:52,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-13 08:58:52,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 08:58:52,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-13 08:58:52,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:58:52,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:58:52,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 166 [2020-10-13 08:58:52,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:58:52,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:58:52,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:58:52,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:58:52,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:58:52,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:58:52,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:58:52,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:58:52,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 08:58:52,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:58:52,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:58:52,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:58:52,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:58:52,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 08:58:52,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:58:52,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:58:52,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:58:52,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:58:52,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-13 08:58:52,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:58:52,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 08:58:52,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:58:52,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:58:52,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:58:52,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:58:52,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:58:52,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-13 08:58:52,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:58:52,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:58:52,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:58:52,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-13 08:58:52,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:58:52,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-13 08:58:52,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:58:52,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:58:52,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 66 [2020-10-13 08:58:52,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:58:52,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-13 08:58:52,627 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2020-10-13 08:58:52,627 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [519359638] [2020-10-13 08:58:52,628 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 08:58:52,628 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 08:58:52,629 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424443920] [2020-10-13 08:58:52,629 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:58:52,629 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:58:52,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:58:52,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:58:52,630 INFO L87 Difference]: Start difference. First operand 4136 states and 5881 transitions. Second operand 5 states. [2020-10-13 08:59:02,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:59:02,487 INFO L93 Difference]: Finished difference Result 11053 states and 16277 transitions. [2020-10-13 08:59:02,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:59:02,488 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 172 [2020-10-13 08:59:02,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:59:02,529 INFO L225 Difference]: With dead ends: 11053 [2020-10-13 08:59:02,529 INFO L226 Difference]: Without dead ends: 7230 [2020-10-13 08:59:02,541 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:59:02,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7230 states. [2020-10-13 08:59:02,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7230 to 7230. [2020-10-13 08:59:02,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7230 states. [2020-10-13 08:59:02,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7230 states to 7230 states and 9840 transitions. [2020-10-13 08:59:02,771 INFO L78 Accepts]: Start accepts. Automaton has 7230 states and 9840 transitions. Word has length 172 [2020-10-13 08:59:02,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:59:02,772 INFO L479 AbstractCegarLoop]: Abstraction has 7230 states and 9840 transitions. [2020-10-13 08:59:02,772 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:59:02,772 INFO L276 IsEmpty]: Start isEmpty. Operand 7230 states and 9840 transitions. [2020-10-13 08:59:02,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2020-10-13 08:59:02,778 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:59:02,779 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:59:02,779 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 08:59:02,779 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:59:02,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:59:02,780 INFO L82 PathProgramCache]: Analyzing trace with hash -1038492659, now seen corresponding path program 1 times [2020-10-13 08:59:02,780 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:59:02,780 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1234282332] [2020-10-13 08:59:02,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:59:02,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:59:02,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:59:02,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:59:04,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:59:06,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:59:06,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 241 [2020-10-13 08:59:06,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:59:06,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3487 [2020-10-13 08:59:06,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:59:06,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 08:59:06,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-13 08:59:06,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-13 08:59:06,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 08:59:06,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:59:06,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:59:06,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:59:06,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:59:06,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:59:06,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:59:06,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:59:06,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:59:06,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:59:06,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:59:06,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:59:06,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:59:06,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:59:06,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:59:06,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:59:06,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:59:06,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-13 08:59:06,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:59:06,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-13 08:59:06,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:59:06,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:59:06,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:59:06,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-13 08:59:06,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:59:06,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-13 08:59:06,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:59:06,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:59:07,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:59:07,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:59:07,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-13 08:59:07,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:59:07,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1053 [2020-10-13 08:59:07,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:59:07,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:59:07,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:59:07,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-10-13 08:59:07,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:59:08,026 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 98 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 08:59:08,027 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1234282332] [2020-10-13 08:59:08,028 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:59:08,028 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:59:08,028 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545684464] [2020-10-13 08:59:08,029 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:59:08,029 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:59:08,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:59:08,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:59:08,030 INFO L87 Difference]: Start difference. First operand 7230 states and 9840 transitions. Second operand 7 states. [2020-10-13 08:59:18,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:59:18,980 INFO L93 Difference]: Finished difference Result 17304 states and 23950 transitions. [2020-10-13 08:59:18,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 08:59:18,982 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 229 [2020-10-13 08:59:18,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:59:19,039 INFO L225 Difference]: With dead ends: 17304 [2020-10-13 08:59:19,039 INFO L226 Difference]: Without dead ends: 9766 [2020-10-13 08:59:19,059 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-13 08:59:19,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9766 states. [2020-10-13 08:59:19,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9766 to 9751. [2020-10-13 08:59:19,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9751 states. [2020-10-13 08:59:19,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9751 states to 9751 states and 13267 transitions. [2020-10-13 08:59:19,364 INFO L78 Accepts]: Start accepts. Automaton has 9751 states and 13267 transitions. Word has length 229 [2020-10-13 08:59:19,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:59:19,364 INFO L479 AbstractCegarLoop]: Abstraction has 9751 states and 13267 transitions. [2020-10-13 08:59:19,364 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:59:19,365 INFO L276 IsEmpty]: Start isEmpty. Operand 9751 states and 13267 transitions. [2020-10-13 08:59:19,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2020-10-13 08:59:19,372 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:59:19,372 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 08:59:19,373 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 08:59:19,373 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:59:19,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:59:19,373 INFO L82 PathProgramCache]: Analyzing trace with hash 1549850952, now seen corresponding path program 1 times [2020-10-13 08:59:19,373 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:59:19,374 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1727031003] [2020-10-13 08:59:19,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:59:19,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:59:19,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:59:19,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:59:20,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:59:20,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-13 08:59:20,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:59:20,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1507 [2020-10-13 08:59:20,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:59:20,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 08:59:20,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 08:59:20,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-10-13 08:59:20,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:59:21,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:59:21,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:59:21,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:59:21,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:59:21,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:59:21,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:59:21,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 08:59:21,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:59:21,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:59:21,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:59:21,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:59:21,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:59:21,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:59:21,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:59:21,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:59:21,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:59:21,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-13 08:59:21,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:59:21,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 212 [2020-10-13 08:59:21,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:59:21,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:59:21,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:59:21,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-13 08:59:21,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:59:21,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-13 08:59:21,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:59:21,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:59:21,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:59:21,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-13 08:59:21,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:59:21,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-13 08:59:21,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:59:21,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:59:21,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 128 [2020-10-13 08:59:21,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:59:21,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:59:21,613 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 18 proven. 111 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-13 08:59:21,613 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1727031003] [2020-10-13 08:59:21,613 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:59:21,614 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:59:21,614 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263306383] [2020-10-13 08:59:21,615 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:59:21,615 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:59:21,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:59:21,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:59:21,616 INFO L87 Difference]: Start difference. First operand 9751 states and 13267 transitions. Second operand 7 states. [2020-10-13 08:59:33,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:59:33,773 INFO L93 Difference]: Finished difference Result 18024 states and 24984 transitions. [2020-10-13 08:59:33,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 08:59:33,776 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 262 [2020-10-13 08:59:33,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:59:33,825 INFO L225 Difference]: With dead ends: 18024 [2020-10-13 08:59:33,825 INFO L226 Difference]: Without dead ends: 8586 [2020-10-13 08:59:33,848 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-13 08:59:33,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8586 states. [2020-10-13 08:59:34,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8586 to 8569. [2020-10-13 08:59:34,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8569 states. [2020-10-13 08:59:34,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8569 states to 8569 states and 11677 transitions. [2020-10-13 08:59:34,087 INFO L78 Accepts]: Start accepts. Automaton has 8569 states and 11677 transitions. Word has length 262 [2020-10-13 08:59:34,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:59:34,088 INFO L479 AbstractCegarLoop]: Abstraction has 8569 states and 11677 transitions. [2020-10-13 08:59:34,088 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:59:34,088 INFO L276 IsEmpty]: Start isEmpty. Operand 8569 states and 11677 transitions. [2020-10-13 08:59:34,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2020-10-13 08:59:34,100 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:59:34,101 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-13 08:59:34,101 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 08:59:34,101 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:59:34,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:59:34,102 INFO L82 PathProgramCache]: Analyzing trace with hash 282211315, now seen corresponding path program 1 times [2020-10-13 08:59:34,103 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:59:34,103 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1167564984] [2020-10-13 08:59:34,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:59:34,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:59:34,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:59:34,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:59:34,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:59:35,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:59:35,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:59:39,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:59:39,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 334 [2020-10-13 08:59:39,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 08:59:39,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5055 [2020-10-13 08:59:39,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:59:39,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:59:39,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-13 08:59:39,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-13 08:59:39,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:59:39,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:59:39,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:59:39,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:59:39,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:59:39,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:59:39,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:59:39,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:59:39,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:59:39,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:59:39,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:59:39,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:59:39,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:59:39,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:59:39,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:59:39,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:59:39,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:59:39,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-13 08:59:39,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:59:39,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-13 08:59:39,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:59:39,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:59:39,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:59:39,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-13 08:59:39,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:59:39,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-13 08:59:39,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:59:39,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:59:39,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:59:39,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:59:39,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-13 08:59:39,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:59:39,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 295 [2020-10-13 08:59:39,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:59:39,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:59:39,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:59:39,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-13 08:59:39,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:59:39,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-10-13 08:59:39,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:59:40,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:59:40,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:59:40,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-13 08:59:40,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:59:40,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-13 08:59:40,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:59:40,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:59:40,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 128 [2020-10-13 08:59:40,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:59:40,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:59:40,199 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 107 proven. 78 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2020-10-13 08:59:40,200 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1167564984] [2020-10-13 08:59:40,200 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:59:40,200 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:59:40,201 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149471382] [2020-10-13 08:59:40,202 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:59:40,202 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:59:40,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:59:40,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:59:40,203 INFO L87 Difference]: Start difference. First operand 8569 states and 11677 transitions. Second operand 7 states. [2020-10-13 08:59:49,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:59:49,913 INFO L93 Difference]: Finished difference Result 15647 states and 21713 transitions. [2020-10-13 08:59:49,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 08:59:49,916 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 320 [2020-10-13 08:59:49,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:59:49,955 INFO L225 Difference]: With dead ends: 15647 [2020-10-13 08:59:49,955 INFO L226 Difference]: Without dead ends: 8587 [2020-10-13 08:59:49,976 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 08:59:49,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8587 states. [2020-10-13 08:59:50,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8587 to 8569. [2020-10-13 08:59:50,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8569 states. [2020-10-13 08:59:50,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8569 states to 8569 states and 11620 transitions. [2020-10-13 08:59:50,255 INFO L78 Accepts]: Start accepts. Automaton has 8569 states and 11620 transitions. Word has length 320 [2020-10-13 08:59:50,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:59:50,256 INFO L479 AbstractCegarLoop]: Abstraction has 8569 states and 11620 transitions. [2020-10-13 08:59:50,256 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:59:50,256 INFO L276 IsEmpty]: Start isEmpty. Operand 8569 states and 11620 transitions. [2020-10-13 08:59:50,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 388 [2020-10-13 08:59:50,276 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:59:50,277 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:59:50,277 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 08:59:50,278 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:59:50,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:59:50,278 INFO L82 PathProgramCache]: Analyzing trace with hash -89161242, now seen corresponding path program 1 times [2020-10-13 08:59:50,279 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:59:50,279 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1545808239] [2020-10-13 08:59:50,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:59:50,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:59:50,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:59:50,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:59:50,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:59:51,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:59:53,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:59:55,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:59:55,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 401 [2020-10-13 08:59:55,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 08:59:55,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5058 [2020-10-13 08:59:55,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:59:55,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:59:55,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 172 [2020-10-13 08:59:55,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-13 08:59:55,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:59:55,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:59:55,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:59:55,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:59:55,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:59:55,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:59:55,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:59:55,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:59:55,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:59:55,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:59:55,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:59:55,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:59:55,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:59:55,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:59:55,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:59:55,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:59:55,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:59:55,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-13 08:59:55,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:59:55,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-10-13 08:59:55,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:59:55,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:59:55,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:59:55,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-10-13 08:59:55,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:59:55,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-10-13 08:59:55,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:59:55,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:59:55,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:59:56,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:59:56,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-13 08:59:56,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:59:56,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 331 [2020-10-13 08:59:56,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:59:56,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:59:56,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:59:56,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-13 08:59:56,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:59:56,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2020-10-13 08:59:56,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:59:56,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:59:56,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:59:56,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-13 08:59:56,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:59:56,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-13 08:59:56,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:59:56,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:59:56,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 128 [2020-10-13 08:59:56,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:59:56,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:59:56,786 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 107 proven. 78 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2020-10-13 08:59:56,786 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1545808239] [2020-10-13 08:59:56,786 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:59:56,787 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 08:59:56,787 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349192214] [2020-10-13 08:59:56,788 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 08:59:56,788 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:59:56,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 08:59:56,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:59:56,789 INFO L87 Difference]: Start difference. First operand 8569 states and 11620 transitions. Second operand 6 states. [2020-10-13 09:00:08,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:00:08,349 INFO L93 Difference]: Finished difference Result 15660 states and 21576 transitions. [2020-10-13 09:00:08,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 09:00:08,351 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 387 [2020-10-13 09:00:08,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:00:08,385 INFO L225 Difference]: With dead ends: 15660 [2020-10-13 09:00:08,385 INFO L226 Difference]: Without dead ends: 8603 [2020-10-13 09:00:08,404 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-13 09:00:08,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8603 states. [2020-10-13 09:00:08,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8603 to 8569. [2020-10-13 09:00:08,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8569 states. [2020-10-13 09:00:08,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8569 states to 8569 states and 11239 transitions. [2020-10-13 09:00:08,585 INFO L78 Accepts]: Start accepts. Automaton has 8569 states and 11239 transitions. Word has length 387 [2020-10-13 09:00:08,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:00:08,586 INFO L479 AbstractCegarLoop]: Abstraction has 8569 states and 11239 transitions. [2020-10-13 09:00:08,586 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 09:00:08,586 INFO L276 IsEmpty]: Start isEmpty. Operand 8569 states and 11239 transitions. [2020-10-13 09:00:08,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 427 [2020-10-13 09:00:08,600 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:00:08,601 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:00:08,601 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 09:00:08,601 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:00:08,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:00:08,602 INFO L82 PathProgramCache]: Analyzing trace with hash -608860973, now seen corresponding path program 1 times [2020-10-13 09:00:08,602 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:00:08,602 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [541210687] [2020-10-13 09:00:08,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:00:08,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:00:08,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:00:08,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:00:09,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:00:13,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:00:13,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 440 [2020-10-13 09:00:13,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:00:13,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-13 09:00:13,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:00:13,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:00:13,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 210 [2020-10-13 09:00:13,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-13 09:00:13,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:00:13,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:00:13,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:00:13,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:00:13,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:00:13,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:00:13,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:00:13,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:00:13,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:00:13,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:00:13,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:00:13,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:00:13,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:00:13,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:00:13,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:00:13,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:00:14,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:00:14,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-13 09:00:14,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:00:14,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 228 [2020-10-13 09:00:14,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:00:14,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:00:14,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:00:14,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 195 [2020-10-13 09:00:14,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:00:14,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-13 09:00:14,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:00:14,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:00:14,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:00:14,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-13 09:00:14,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:00:14,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-13 09:00:14,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:00:14,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:00:14,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:00:14,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-13 09:00:14,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:00:14,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2020-10-13 09:00:14,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:00:14,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:00:14,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:00:14,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-13 09:00:14,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:00:14,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-13 09:00:14,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:00:14,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:00:14,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 128 [2020-10-13 09:00:14,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:00:14,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:00:14,871 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 108 proven. 79 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2020-10-13 09:00:14,871 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [541210687] [2020-10-13 09:00:14,871 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:00:14,872 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 09:00:14,872 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883086280] [2020-10-13 09:00:14,873 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 09:00:14,873 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:00:14,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 09:00:14,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-13 09:00:14,874 INFO L87 Difference]: Start difference. First operand 8569 states and 11239 transitions. Second operand 8 states. [2020-10-13 09:00:24,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:00:24,641 INFO L93 Difference]: Finished difference Result 20018 states and 27332 transitions. [2020-10-13 09:00:24,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 09:00:24,644 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 426 [2020-10-13 09:00:24,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:00:24,702 INFO L225 Difference]: With dead ends: 20018 [2020-10-13 09:00:24,702 INFO L226 Difference]: Without dead ends: 11762 [2020-10-13 09:00:24,728 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:00:24,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11762 states. [2020-10-13 09:00:25,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11762 to 11746. [2020-10-13 09:00:25,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11746 states. [2020-10-13 09:00:25,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11746 states to 11746 states and 15157 transitions. [2020-10-13 09:00:25,060 INFO L78 Accepts]: Start accepts. Automaton has 11746 states and 15157 transitions. Word has length 426 [2020-10-13 09:00:25,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:00:25,062 INFO L479 AbstractCegarLoop]: Abstraction has 11746 states and 15157 transitions. [2020-10-13 09:00:25,062 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 09:00:25,062 INFO L276 IsEmpty]: Start isEmpty. Operand 11746 states and 15157 transitions. [2020-10-13 09:00:25,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 458 [2020-10-13 09:00:25,087 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:00:25,088 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:00:25,088 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 09:00:25,088 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:00:25,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:00:25,089 INFO L82 PathProgramCache]: Analyzing trace with hash -534019157, now seen corresponding path program 1 times [2020-10-13 09:00:25,089 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:00:25,089 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1844868017] [2020-10-13 09:00:25,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:00:25,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:00:25,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:00:25,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:00:25,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:00:30,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:00:30,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 471 [2020-10-13 09:00:30,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:00:30,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-13 09:00:30,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:00:30,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:00:30,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 210 [2020-10-13 09:00:30,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-13 09:00:30,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:00:30,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:00:30,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:00:30,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:00:30,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:00:30,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:00:30,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:00:30,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:00:30,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:00:30,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:00:30,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:00:30,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:00:30,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:00:30,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:00:30,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:00:30,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:00:30,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:00:30,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-13 09:00:30,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:00:30,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-13 09:00:30,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:00:30,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:00:30,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:00:30,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 195 [2020-10-13 09:00:30,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:00:30,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-13 09:00:30,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:00:30,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:00:30,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:00:30,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-13 09:00:30,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:00:30,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 182 [2020-10-13 09:00:30,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:00:30,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:00:30,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:00:30,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-13 09:00:30,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:00:30,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2020-10-13 09:00:31,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:00:31,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:00:31,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:00:31,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-13 09:00:31,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:00:31,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 190 [2020-10-13 09:00:31,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:00:31,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:00:31,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 128 [2020-10-13 09:00:31,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:00:31,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:00:31,589 INFO L134 CoverageAnalysis]: Checked inductivity of 379 backedges. 139 proven. 110 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2020-10-13 09:00:31,590 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1844868017] [2020-10-13 09:00:31,591 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:00:31,591 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 09:00:31,591 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113297068] [2020-10-13 09:00:31,592 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 09:00:31,592 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:00:31,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 09:00:31,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 09:00:31,593 INFO L87 Difference]: Start difference. First operand 11746 states and 15157 transitions. Second operand 8 states. [2020-10-13 09:00:51,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:00:51,577 INFO L93 Difference]: Finished difference Result 28735 states and 40594 transitions. [2020-10-13 09:00:51,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 09:00:51,582 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 457 [2020-10-13 09:00:51,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:00:51,699 INFO L225 Difference]: With dead ends: 28735 [2020-10-13 09:00:51,699 INFO L226 Difference]: Without dead ends: 17302 [2020-10-13 09:00:51,735 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-10-13 09:00:51,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17302 states. [2020-10-13 09:00:52,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17302 to 16763. [2020-10-13 09:00:52,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16763 states. [2020-10-13 09:00:52,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16763 states to 16763 states and 21388 transitions. [2020-10-13 09:00:52,408 INFO L78 Accepts]: Start accepts. Automaton has 16763 states and 21388 transitions. Word has length 457 [2020-10-13 09:00:52,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:00:52,409 INFO L479 AbstractCegarLoop]: Abstraction has 16763 states and 21388 transitions. [2020-10-13 09:00:52,409 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 09:00:52,410 INFO L276 IsEmpty]: Start isEmpty. Operand 16763 states and 21388 transitions. [2020-10-13 09:00:52,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 470 [2020-10-13 09:00:52,433 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:00:52,434 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:00:52,434 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 09:00:52,434 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:00:52,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:00:52,435 INFO L82 PathProgramCache]: Analyzing trace with hash -870554791, now seen corresponding path program 1 times [2020-10-13 09:00:52,435 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:00:52,436 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [952619027] [2020-10-13 09:00:52,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:00:52,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:00:52,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:00:52,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:00:52,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:00:53,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:00:55,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:00:57,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:00:57,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 483 [2020-10-13 09:00:57,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 09:00:57,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-13 09:00:57,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:00:57,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:00:57,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 335 [2020-10-13 09:00:57,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 09:00:57,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:00:57,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:00:57,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:00:57,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:00:57,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:00:57,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:00:57,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:00:57,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:00:57,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:00:57,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:00:57,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:00:57,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:00:57,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:00:57,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:00:57,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:00:57,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:00:57,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:00:57,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-10-13 09:00:57,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:00:57,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-13 09:00:57,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:00:57,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:00:57,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:00:57,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:00:57,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:00:57,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2020-10-13 09:00:57,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:00:57,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:00:57,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:00:57,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-13 09:00:57,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:00:57,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-13 09:00:57,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:00:57,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:00:57,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:00:57,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-13 09:00:57,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:00:58,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2020-10-13 09:00:58,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:00:58,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:00:58,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:00:58,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:00:58,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-13 09:00:58,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:00:58,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 213 [2020-10-13 09:00:58,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:00:58,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:00:58,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:00:58,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-10-13 09:00:58,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:00:58,468 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 242 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-10-13 09:00:58,469 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [952619027] [2020-10-13 09:00:58,469 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:00:58,469 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:00:58,469 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818889772] [2020-10-13 09:00:58,470 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:00:58,471 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:00:58,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:00:58,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:00:58,471 INFO L87 Difference]: Start difference. First operand 16763 states and 21388 transitions. Second operand 7 states. [2020-10-13 09:01:12,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:01:12,093 INFO L93 Difference]: Finished difference Result 31154 states and 44942 transitions. [2020-10-13 09:01:12,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 09:01:12,096 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 469 [2020-10-13 09:01:12,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:01:12,207 INFO L225 Difference]: With dead ends: 31154 [2020-10-13 09:01:12,208 INFO L226 Difference]: Without dead ends: 17163 [2020-10-13 09:01:12,243 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2020-10-13 09:01:12,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17163 states. [2020-10-13 09:01:13,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17163 to 16767. [2020-10-13 09:01:13,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16767 states. [2020-10-13 09:01:13,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16767 states to 16767 states and 21390 transitions. [2020-10-13 09:01:13,068 INFO L78 Accepts]: Start accepts. Automaton has 16767 states and 21390 transitions. Word has length 469 [2020-10-13 09:01:13,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:01:13,069 INFO L479 AbstractCegarLoop]: Abstraction has 16767 states and 21390 transitions. [2020-10-13 09:01:13,069 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:01:13,070 INFO L276 IsEmpty]: Start isEmpty. Operand 16767 states and 21390 transitions. [2020-10-13 09:01:13,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 475 [2020-10-13 09:01:13,084 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:01:13,085 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:01:13,085 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 09:01:13,085 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:01:13,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:01:13,086 INFO L82 PathProgramCache]: Analyzing trace with hash 945794275, now seen corresponding path program 1 times [2020-10-13 09:01:13,086 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:01:13,086 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1389534291] [2020-10-13 09:01:13,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:01:13,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:01:13,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:13,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:13,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:15,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:17,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:17,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:18,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:01:18,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 488 [2020-10-13 09:01:18,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 09:01:18,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5145 [2020-10-13 09:01:18,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:01:18,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 09:01:18,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 470 [2020-10-13 09:01:18,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 09:01:18,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:01:18,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:01:18,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:01:18,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:18,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:01:18,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:01:18,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:01:18,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:01:18,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:01:18,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:01:18,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:01:18,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:01:18,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:01:18,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:01:18,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:01:18,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:18,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:01:18,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-10-13 09:01:18,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:01:18,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-13 09:01:18,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:01:18,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:01:18,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:01:18,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:01:18,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:01:18,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2020-10-13 09:01:18,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:01:18,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:18,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:01:18,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-13 09:01:18,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:01:18,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 09:01:18,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:01:18,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:01:18,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:01:18,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:01:18,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:01:18,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2020-10-13 09:01:18,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:01:18,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:18,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:01:18,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-13 09:01:18,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:01:18,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-13 09:01:18,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:01:18,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 09:01:18,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:01:18,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-13 09:01:18,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:01:18,943 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 30 proven. 3 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked. [2020-10-13 09:01:18,943 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1389534291] [2020-10-13 09:01:18,944 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:01:18,944 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 09:01:18,944 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477597980] [2020-10-13 09:01:18,944 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 09:01:18,944 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:01:18,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 09:01:18,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:01:18,945 INFO L87 Difference]: Start difference. First operand 16767 states and 21390 transitions. Second operand 6 states. [2020-10-13 09:01:32,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:01:32,453 INFO L93 Difference]: Finished difference Result 36317 states and 48063 transitions. [2020-10-13 09:01:32,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 09:01:32,456 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 474 [2020-10-13 09:01:32,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:01:32,526 INFO L225 Difference]: With dead ends: 36317 [2020-10-13 09:01:32,527 INFO L226 Difference]: Without dead ends: 22347 [2020-10-13 09:01:32,555 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 09:01:32,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22347 states. [2020-10-13 09:01:32,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22347 to 22345. [2020-10-13 09:01:32,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22345 states. [2020-10-13 09:01:32,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22345 states to 22345 states and 28940 transitions. [2020-10-13 09:01:33,000 INFO L78 Accepts]: Start accepts. Automaton has 22345 states and 28940 transitions. Word has length 474 [2020-10-13 09:01:33,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:01:33,001 INFO L479 AbstractCegarLoop]: Abstraction has 22345 states and 28940 transitions. [2020-10-13 09:01:33,001 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 09:01:33,001 INFO L276 IsEmpty]: Start isEmpty. Operand 22345 states and 28940 transitions. [2020-10-13 09:01:33,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 500 [2020-10-13 09:01:33,018 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:01:33,019 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:01:33,019 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 09:01:33,020 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:01:33,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:01:33,020 INFO L82 PathProgramCache]: Analyzing trace with hash 1806768573, now seen corresponding path program 1 times [2020-10-13 09:01:33,020 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:01:33,021 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1807502498] [2020-10-13 09:01:33,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:01:33,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:01:33,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:33,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:33,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:34,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:37,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking...