/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/Problem06_label24.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 07:06:15,921 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 07:06:15,923 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 07:06:15,947 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 07:06:15,947 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 07:06:15,948 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 07:06:15,950 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 07:06:15,951 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 07:06:15,953 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 07:06:15,954 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 07:06:15,955 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 07:06:15,956 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 07:06:15,956 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 07:06:15,957 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 07:06:15,958 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 07:06:15,959 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 07:06:15,960 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 07:06:15,961 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 07:06:15,963 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 07:06:15,965 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 07:06:15,967 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 07:06:15,968 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 07:06:15,969 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 07:06:15,970 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 07:06:15,974 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 07:06:15,975 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 07:06:15,975 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 07:06:15,976 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 07:06:15,976 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 07:06:15,977 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 07:06:15,978 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 07:06:15,978 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 07:06:15,979 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 07:06:15,980 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 07:06:15,981 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 07:06:15,981 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 07:06:15,982 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 07:06:15,982 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 07:06:15,982 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 07:06:15,983 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 07:06:15,984 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 07:06:15,984 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 07:06:16,007 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 07:06:16,008 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 07:06:16,009 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 07:06:16,009 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 07:06:16,009 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 07:06:16,010 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 07:06:16,010 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 07:06:16,010 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 07:06:16,010 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 07:06:16,010 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 07:06:16,011 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 07:06:16,011 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 07:06:16,011 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 07:06:16,011 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 07:06:16,011 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 07:06:16,012 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 07:06:16,012 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 07:06:16,012 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 07:06:16,012 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 07:06:16,012 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 07:06:16,013 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 07:06:16,013 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 07:06:16,013 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 07:06:16,013 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 07:06:16,013 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 07:06:16,014 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 07:06:16,014 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 07:06:16,014 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 07:06:16,014 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 07:06:16,014 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 07:06:16,331 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 07:06:16,343 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 07:06:16,347 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 07:06:16,348 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 07:06:16,349 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 07:06:16,350 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem06_label24.c [2020-10-13 07:06:16,433 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5ac2b0dcc/4c27611e44fa43af873f4e68f6183176/FLAG5e87cf6e3 [2020-10-13 07:06:17,375 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 07:06:17,376 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem06_label24.c [2020-10-13 07:06:17,425 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5ac2b0dcc/4c27611e44fa43af873f4e68f6183176/FLAG5e87cf6e3 [2020-10-13 07:06:17,766 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5ac2b0dcc/4c27611e44fa43af873f4e68f6183176 [2020-10-13 07:06:17,777 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 07:06:17,781 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 07:06:17,785 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 07:06:17,786 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 07:06:17,789 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 07:06:17,790 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:06:17" (1/1) ... [2020-10-13 07:06:17,794 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12925ca7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:06:17, skipping insertion in model container [2020-10-13 07:06:17,795 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:06:17" (1/1) ... [2020-10-13 07:06:17,804 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 07:06:18,071 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 07:06:20,504 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 07:06:20,516 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 07:06:21,767 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 07:06:21,822 INFO L208 MainTranslator]: Completed translation [2020-10-13 07:06:21,822 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:06:21 WrapperNode [2020-10-13 07:06:21,823 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 07:06:21,824 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 07:06:21,824 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 07:06:21,824 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 07:06:21,840 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:06:21" (1/1) ... [2020-10-13 07:06:21,841 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:06:21" (1/1) ... [2020-10-13 07:06:21,933 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:06:21" (1/1) ... [2020-10-13 07:06:21,934 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:06:21" (1/1) ... [2020-10-13 07:06:22,122 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:06:21" (1/1) ... [2020-10-13 07:06:22,159 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:06:21" (1/1) ... [2020-10-13 07:06:22,195 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:06:21" (1/1) ... [2020-10-13 07:06:22,245 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 07:06:22,245 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 07:06:22,246 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 07:06:22,246 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 07:06:22,247 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:06:21" (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 07:06:22,331 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 07:06:22,332 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 07:06:22,332 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 07:06:22,332 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 07:06:22,332 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-13 07:06:22,333 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-13 07:06:22,333 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-13 07:06:22,333 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 07:06:22,333 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 07:06:22,333 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 07:06:22,334 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-13 07:06:22,334 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-13 07:06:22,334 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-13 07:06:22,334 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 07:06:22,334 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 07:06:22,335 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 07:06:22,335 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 07:06:22,335 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 07:06:22,335 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 07:06:29,435 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 07:06:29,436 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 07:06:29,453 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:06:29 BoogieIcfgContainer [2020-10-13 07:06:29,453 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 07:06:29,455 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 07:06:29,455 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 07:06:29,458 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 07:06:29,458 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:06:17" (1/3) ... [2020-10-13 07:06:29,459 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b4af5b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:06:29, skipping insertion in model container [2020-10-13 07:06:29,459 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:06:21" (2/3) ... [2020-10-13 07:06:29,460 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b4af5b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:06:29, skipping insertion in model container [2020-10-13 07:06:29,460 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:06:29" (3/3) ... [2020-10-13 07:06:29,462 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem06_label24.c [2020-10-13 07:06:29,473 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 07:06:29,482 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 07:06:29,497 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 07:06:29,528 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 07:06:29,528 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 07:06:29,528 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 07:06:29,528 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 07:06:29,528 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 07:06:29,529 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 07:06:29,529 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 07:06:29,529 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 07:06:29,569 INFO L276 IsEmpty]: Start isEmpty. Operand 1315 states. [2020-10-13 07:06:29,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 968 [2020-10-13 07:06:29,617 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 07:06:29,619 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:06:29,619 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 07:06:29,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 07:06:29,626 INFO L82 PathProgramCache]: Analyzing trace with hash 531476968, now seen corresponding path program 1 times [2020-10-13 07:06:29,636 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 07:06:29,636 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [639834244] [2020-10-13 07:06:29,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 07:06:30,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:06:31,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:06:32,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:06:35,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:06:35,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 983 [2020-10-13 07:06:35,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 07:06:35,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5178 [2020-10-13 07:06:35,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:06:35,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-13 07:06:35,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 07:06:35,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 769 [2020-10-13 07:06:35,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 07:06:39,048 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 63 [2020-10-13 07:06:39,282 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 74 [2020-10-13 07:06:39,592 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 74 [2020-10-13 07:06:39,796 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 74 [2020-10-13 07:06:40,007 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 70 [2020-10-13 07:06:40,169 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 66 [2020-10-13 07:06:40,325 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 66 [2020-10-13 07:06:40,483 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 66 [2020-10-13 07:06:40,628 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 57 [2020-10-13 07:06:40,818 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 57 [2020-10-13 07:06:40,996 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 57 [2020-10-13 07:06:41,457 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 07:06:41,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 07:06:41,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:06:41,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:06:41,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:06:41,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 07:06:41,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:06:41,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 07:06:41,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:06:41,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 07:06:41,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 07:06:41,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 07:06:41,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:06:52,769 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 07:06:52,769 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [639834244] [2020-10-13 07:06:52,771 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 07:06:52,771 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2020-10-13 07:06:52,772 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466004100] [2020-10-13 07:06:52,781 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-13 07:06:52,781 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 07:06:52,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-13 07:06:52,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=302, Unknown=0, NotChecked=0, Total=342 [2020-10-13 07:06:52,802 INFO L87 Difference]: Start difference. First operand 1315 states. Second operand 19 states. [2020-10-13 07:06:53,155 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-13 07:06:53,827 WARN L193 SmtUtils]: Spent 549.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 166 [2020-10-13 07:06:54,475 WARN L193 SmtUtils]: Spent 557.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 166 [2020-10-13 07:06:55,196 WARN L193 SmtUtils]: Spent 624.00 ms on a formula simplification. DAG size of input: 202 DAG size of output: 174 [2020-10-13 07:06:59,025 WARN L193 SmtUtils]: Spent 627.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 173 [2020-10-13 07:07:02,247 WARN L193 SmtUtils]: Spent 965.00 ms on a formula simplification. DAG size of input: 203 DAG size of output: 172 [2020-10-13 07:07:04,506 WARN L193 SmtUtils]: Spent 517.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 163 [2020-10-13 07:07:05,189 WARN L193 SmtUtils]: Spent 607.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 169 [2020-10-13 07:07:06,092 WARN L193 SmtUtils]: Spent 569.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 168 [2020-10-13 07:07:14,654 WARN L193 SmtUtils]: Spent 523.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 161 [2020-10-13 07:07:15,287 WARN L193 SmtUtils]: Spent 565.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 166 [2020-10-13 07:07:17,899 WARN L193 SmtUtils]: Spent 550.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 165 [2020-10-13 07:07:24,363 WARN L193 SmtUtils]: Spent 491.00 ms on a formula simplification. DAG size of input: 175 DAG size of output: 159 [2020-10-13 07:07:25,013 WARN L193 SmtUtils]: Spent 558.00 ms on a formula simplification. DAG size of input: 181 DAG size of output: 163 [2020-10-13 07:07:27,204 WARN L193 SmtUtils]: Spent 536.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 161 [2020-10-13 07:07:38,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 07:07:38,038 INFO L93 Difference]: Finished difference Result 3396 states and 6359 transitions. [2020-10-13 07:07:38,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 07:07:38,042 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 967 [2020-10-13 07:07:38,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 07:07:38,080 INFO L225 Difference]: With dead ends: 3396 [2020-10-13 07:07:38,081 INFO L226 Difference]: Without dead ends: 2019 [2020-10-13 07:07:38,092 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 11.7s TimeCoverageRelationStatistics Valid=173, Invalid=949, Unknown=0, NotChecked=0, Total=1122 [2020-10-13 07:07:38,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2019 states. [2020-10-13 07:07:38,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2019 to 2019. [2020-10-13 07:07:38,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2019 states. [2020-10-13 07:07:38,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2019 states to 2019 states and 3053 transitions. [2020-10-13 07:07:38,247 INFO L78 Accepts]: Start accepts. Automaton has 2019 states and 3053 transitions. Word has length 967 [2020-10-13 07:07:38,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 07:07:38,250 INFO L479 AbstractCegarLoop]: Abstraction has 2019 states and 3053 transitions. [2020-10-13 07:07:38,250 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-13 07:07:38,250 INFO L276 IsEmpty]: Start isEmpty. Operand 2019 states and 3053 transitions. [2020-10-13 07:07:38,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1038 [2020-10-13 07:07:38,296 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 07:07:38,297 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:07:38,297 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 07:07:38,297 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 07:07:38,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 07:07:38,298 INFO L82 PathProgramCache]: Analyzing trace with hash -671190347, now seen corresponding path program 1 times [2020-10-13 07:07:38,298 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 07:07:38,299 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [745858193] [2020-10-13 07:07:38,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 07:07:38,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:07:39,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:07:39,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:07:41,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:07:43,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:07:43,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1055 [2020-10-13 07:07:43,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 07:07:43,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-13 07:07:43,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:07:43,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 07:07:43,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 07:07:43,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-13 07:07:43,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:07:44,166 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 07:07:44,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 07:07:44,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:07:44,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:07:44,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:07:44,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 07:07:44,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:07:44,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 07:07:44,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:07:44,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 07:07:44,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 07:07:44,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 07:07:44,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:07:44,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 07:07:44,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:07:44,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:07:44,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:07:44,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-13 07:07:44,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:07:44,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-10-13 07:07:44,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:07:44,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 07:07:44,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 07:07:44,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-13 07:07:44,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:07:45,118 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 07:07:45,118 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [745858193] [2020-10-13 07:07:45,118 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 07:07:45,119 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 07:07:45,119 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5973586] [2020-10-13 07:07:45,122 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 07:07:45,122 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 07:07:45,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 07:07:45,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 07:07:45,123 INFO L87 Difference]: Start difference. First operand 2019 states and 3053 transitions. Second operand 7 states. [2020-10-13 07:07:45,283 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-13 07:07:46,484 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-13 07:08:04,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 07:08:04,929 INFO L93 Difference]: Finished difference Result 4490 states and 7529 transitions. [2020-10-13 07:08:04,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 07:08:04,930 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1037 [2020-10-13 07:08:04,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 07:08:04,948 INFO L225 Difference]: With dead ends: 4490 [2020-10-13 07:08:04,949 INFO L226 Difference]: Without dead ends: 3231 [2020-10-13 07:08:04,953 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-13 07:08:04,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3231 states. [2020-10-13 07:08:05,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3231 to 3163. [2020-10-13 07:08:05,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3163 states. [2020-10-13 07:08:05,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3163 states to 3163 states and 4674 transitions. [2020-10-13 07:08:05,053 INFO L78 Accepts]: Start accepts. Automaton has 3163 states and 4674 transitions. Word has length 1037 [2020-10-13 07:08:05,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 07:08:05,054 INFO L479 AbstractCegarLoop]: Abstraction has 3163 states and 4674 transitions. [2020-10-13 07:08:05,054 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 07:08:05,054 INFO L276 IsEmpty]: Start isEmpty. Operand 3163 states and 4674 transitions. [2020-10-13 07:08:05,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1090 [2020-10-13 07:08:05,072 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 07:08:05,073 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:08:05,073 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 07:08:05,073 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 07:08:05,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 07:08:05,074 INFO L82 PathProgramCache]: Analyzing trace with hash 1126812946, now seen corresponding path program 1 times [2020-10-13 07:08:05,074 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 07:08:05,074 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [825058430] [2020-10-13 07:08:05,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 07:08:05,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:08:05,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:08:06,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:08:10,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:08:10,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1107 [2020-10-13 07:08:10,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 07:08:10,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5054 [2020-10-13 07:08:10,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:08:10,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-13 07:08:10,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 07:08:10,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 552 [2020-10-13 07:08:10,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:08:12,160 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 76 [2020-10-13 07:08:12,406 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 76 [2020-10-13 07:08:12,646 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 76 [2020-10-13 07:08:12,834 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 66 [2020-10-13 07:08:12,989 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 65 [2020-10-13 07:08:13,355 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 65 [2020-10-13 07:08:13,510 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 57 [2020-10-13 07:08:13,650 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 49 [2020-10-13 07:08:13,927 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 07:08:13,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 07:08:13,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:08:13,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:08:13,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:08:13,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 07:08:13,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:08:13,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 07:08:13,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:08:13,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 07:08:13,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 07:08:13,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 07:08:13,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:08:14,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 07:08:14,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:08:14,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:08:14,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:08:14,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-13 07:08:14,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:08:14,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 283 [2020-10-13 07:08:14,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:08:14,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 07:08:14,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 07:08:14,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-13 07:08:14,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 07:08:22,903 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 2 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 07:08:22,903 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [825058430] [2020-10-13 07:08:22,904 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 07:08:22,904 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-13 07:08:22,904 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087899467] [2020-10-13 07:08:22,906 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-13 07:08:22,906 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 07:08:22,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-13 07:08:22,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2020-10-13 07:08:22,907 INFO L87 Difference]: Start difference. First operand 3163 states and 4674 transitions. Second operand 18 states. [2020-10-13 07:08:23,130 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-13 07:08:25,082 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 82 [2020-10-13 07:08:25,558 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 90 [2020-10-13 07:08:26,226 WARN L193 SmtUtils]: Spent 610.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 180 [2020-10-13 07:08:27,016 WARN L193 SmtUtils]: Spent 723.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 200 [2020-10-13 07:08:28,340 WARN L193 SmtUtils]: Spent 681.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 197 [2020-10-13 07:08:31,778 WARN L193 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 208 DAG size of output: 194 [2020-10-13 07:08:40,752 WARN L193 SmtUtils]: Spent 602.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 172 [2020-10-13 07:08:41,458 WARN L193 SmtUtils]: Spent 622.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 186 [2020-10-13 07:08:42,742 WARN L193 SmtUtils]: Spent 590.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 183 [2020-10-13 07:08:51,973 WARN L193 SmtUtils]: Spent 999.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 180 [2020-10-13 07:08:53,314 WARN L193 SmtUtils]: Spent 894.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 176 [2020-10-13 07:09:16,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 07:09:16,671 INFO L93 Difference]: Finished difference Result 8431 states and 13395 transitions. [2020-10-13 07:09:16,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-13 07:09:16,673 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 1089 [2020-10-13 07:09:16,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 07:09:16,701 INFO L225 Difference]: With dead ends: 8431 [2020-10-13 07:09:16,701 INFO L226 Difference]: Without dead ends: 6028 [2020-10-13 07:09:16,708 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 10.3s TimeCoverageRelationStatistics Valid=219, Invalid=773, Unknown=0, NotChecked=0, Total=992 [2020-10-13 07:09:16,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6028 states. [2020-10-13 07:09:16,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6028 to 5955. [2020-10-13 07:09:16,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5955 states. [2020-10-13 07:09:16,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5955 states to 5955 states and 8886 transitions. [2020-10-13 07:09:16,878 INFO L78 Accepts]: Start accepts. Automaton has 5955 states and 8886 transitions. Word has length 1089 [2020-10-13 07:09:16,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 07:09:16,880 INFO L479 AbstractCegarLoop]: Abstraction has 5955 states and 8886 transitions. [2020-10-13 07:09:16,880 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-13 07:09:16,881 INFO L276 IsEmpty]: Start isEmpty. Operand 5955 states and 8886 transitions. [2020-10-13 07:09:16,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1115 [2020-10-13 07:09:16,949 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 07:09:16,951 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:09:16,951 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 07:09:16,952 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 07:09:16,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 07:09:16,953 INFO L82 PathProgramCache]: Analyzing trace with hash -1123130299, now seen corresponding path program 1 times [2020-10-13 07:09:16,953 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 07:09:16,953 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [622105254] [2020-10-13 07:09:16,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 07:09:17,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:09:17,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:09:18,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:09:22,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:09:22,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1134 [2020-10-13 07:09:22,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 07:09:22,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5160 [2020-10-13 07:09:22,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:09:22,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-13 07:09:22,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 07:09:22,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 891 [2020-10-13 07:09:22,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:09:24,878 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 73 [2020-10-13 07:09:25,080 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 73 [2020-10-13 07:09:25,303 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 73 [2020-10-13 07:09:25,529 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 73 [2020-10-13 07:09:25,760 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 73 [2020-10-13 07:09:25,953 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 66 [2020-10-13 07:09:26,139 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 65 [2020-10-13 07:09:26,323 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 65 [2020-10-13 07:09:26,519 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 68 [2020-10-13 07:09:26,683 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 55 [2020-10-13 07:09:27,214 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 07:09:27,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 07:09:27,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:09:27,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:09:27,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:09:27,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 07:09:27,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:09:27,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 07:09:27,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:09:27,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 07:09:27,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 07:09:27,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 07:09:27,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:09:27,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 07:09:27,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:09:27,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:09:27,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:09:27,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-13 07:09:27,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:09:27,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 427 [2020-10-13 07:09:27,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:09:27,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 07:09:27,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 07:09:27,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-13 07:09:27,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:09:28,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-13 07:09:28,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:09:28,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:09:28,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:09:28,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 07:09:28,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:09:28,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-13 07:09:28,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:09:28,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 07:09:28,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 07:09:28,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 07:09:28,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:09:42,165 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 23 proven. 142 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 07:09:42,165 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [622105254] [2020-10-13 07:09:42,166 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 07:09:42,166 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-13 07:09:42,166 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131308307] [2020-10-13 07:09:42,168 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-13 07:09:42,168 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 07:09:42,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-13 07:09:42,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=541, Unknown=0, NotChecked=0, Total=600 [2020-10-13 07:09:42,169 INFO L87 Difference]: Start difference. First operand 5955 states and 8886 transitions. Second operand 25 states. [2020-10-13 07:09:42,447 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-10-13 07:09:45,545 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-10-13 07:09:46,741 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 95 [2020-10-13 07:09:47,083 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 69 [2020-10-13 07:09:47,531 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 81 [2020-10-13 07:09:48,265 WARN L193 SmtUtils]: Spent 616.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 169 [2020-10-13 07:09:49,059 WARN L193 SmtUtils]: Spent 679.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 177 [2020-10-13 07:09:53,016 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 100