/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/Problem04_label58.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 06:43:40,811 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 06:43:40,814 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 06:43:40,853 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 06:43:40,853 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 06:43:40,860 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 06:43:40,862 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 06:43:40,865 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 06:43:40,867 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 06:43:40,872 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 06:43:40,873 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 06:43:40,874 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 06:43:40,874 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 06:43:40,876 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 06:43:40,879 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 06:43:40,880 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 06:43:40,881 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 06:43:40,882 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 06:43:40,884 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 06:43:40,891 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 06:43:40,893 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 06:43:40,894 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 06:43:40,895 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 06:43:40,896 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 06:43:40,906 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 06:43:40,906 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 06:43:40,906 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 06:43:40,907 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 06:43:40,908 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 06:43:40,910 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 06:43:40,911 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 06:43:40,911 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 06:43:40,912 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 06:43:40,913 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 06:43:40,914 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 06:43:40,915 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 06:43:40,915 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 06:43:40,915 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 06:43:40,916 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 06:43:40,917 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 06:43:40,918 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 06:43:40,918 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 06:43:40,956 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 06:43:40,956 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 06:43:40,958 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 06:43:40,958 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 06:43:40,958 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 06:43:40,959 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 06:43:40,959 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 06:43:40,959 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 06:43:40,959 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 06:43:40,959 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 06:43:40,960 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 06:43:40,960 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 06:43:40,961 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 06:43:40,961 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 06:43:40,961 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 06:43:40,961 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 06:43:40,962 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 06:43:40,962 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 06:43:40,962 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 06:43:40,962 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 06:43:40,962 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 06:43:40,962 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 06:43:40,963 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 06:43:40,963 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 06:43:40,963 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 06:43:40,963 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 06:43:40,963 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 06:43:40,964 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 06:43:40,964 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 06:43:40,964 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 06:43:41,261 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 06:43:41,274 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 06:43:41,279 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 06:43:41,285 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 06:43:41,286 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 06:43:41,286 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label58.c [2020-10-13 06:43:41,345 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7c179521d/4cfdbb4af8124416a6c5b6026fb0fd96/FLAG1d1dcf1bf [2020-10-13 06:43:42,019 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 06:43:42,020 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem04_label58.c [2020-10-13 06:43:42,060 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7c179521d/4cfdbb4af8124416a6c5b6026fb0fd96/FLAG1d1dcf1bf [2020-10-13 06:43:42,199 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7c179521d/4cfdbb4af8124416a6c5b6026fb0fd96 [2020-10-13 06:43:42,211 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 06:43:42,213 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 06:43:42,217 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 06:43:42,218 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 06:43:42,221 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 06:43:42,222 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:43:42" (1/1) ... [2020-10-13 06:43:42,226 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@482c0da1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:43:42, skipping insertion in model container [2020-10-13 06:43:42,226 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:43:42" (1/1) ... [2020-10-13 06:43:42,235 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 06:43:42,416 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 06:43:43,762 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 06:43:43,769 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 06:43:44,494 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 06:43:44,526 INFO L208 MainTranslator]: Completed translation [2020-10-13 06:43:44,527 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:43:44 WrapperNode [2020-10-13 06:43:44,527 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 06:43:44,528 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 06:43:44,528 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 06:43:44,528 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 06:43:44,542 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:43:44" (1/1) ... [2020-10-13 06:43:44,544 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:43:44" (1/1) ... [2020-10-13 06:43:44,595 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:43:44" (1/1) ... [2020-10-13 06:43:44,596 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:43:44" (1/1) ... [2020-10-13 06:43:44,679 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:43:44" (1/1) ... [2020-10-13 06:43:44,706 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:43:44" (1/1) ... [2020-10-13 06:43:44,727 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:43:44" (1/1) ... [2020-10-13 06:43:44,750 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 06:43:44,751 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 06:43:44,751 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 06:43:44,751 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 06:43:44,752 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:43:44" (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 06:43:44,830 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 06:43:44,833 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 06:43:44,833 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 06:43:44,833 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 06:43:44,833 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-13 06:43:44,833 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-13 06:43:44,834 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 06:43:44,835 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 06:43:44,835 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 06:43:44,835 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-13 06:43:44,835 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-13 06:43:44,835 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 06:43:44,836 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 06:43:44,836 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 06:43:44,836 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 06:43:44,837 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 06:43:44,837 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 06:43:48,868 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 06:43:48,868 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 06:43:48,880 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:43:48 BoogieIcfgContainer [2020-10-13 06:43:48,880 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 06:43:48,881 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 06:43:48,881 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 06:43:48,887 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 06:43:48,887 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 06:43:42" (1/3) ... [2020-10-13 06:43:48,888 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36f2a610 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:43:48, skipping insertion in model container [2020-10-13 06:43:48,888 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:43:44" (2/3) ... [2020-10-13 06:43:48,888 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36f2a610 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:43:48, skipping insertion in model container [2020-10-13 06:43:48,889 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:43:48" (3/3) ... [2020-10-13 06:43:48,891 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem04_label58.c [2020-10-13 06:43:48,901 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 06:43:48,913 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 06:43:48,927 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 06:43:49,022 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 06:43:49,022 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 06:43:49,023 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 06:43:49,023 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 06:43:49,023 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 06:43:49,023 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 06:43:49,023 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 06:43:49,023 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 06:43:49,064 INFO L276 IsEmpty]: Start isEmpty. Operand 906 states. [2020-10-13 06:43:49,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 775 [2020-10-13 06:43:49,116 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:43:49,118 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] [2020-10-13 06:43:49,119 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:43:49,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:43:49,125 INFO L82 PathProgramCache]: Analyzing trace with hash 1925854507, now seen corresponding path program 1 times [2020-10-13 06:43:49,134 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:43:49,134 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [840395991] [2020-10-13 06:43:49,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:43:49,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:43:50,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:43:53,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:43:54,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:43:54,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 788 [2020-10-13 06:43:54,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 06:43:54,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5050 [2020-10-13 06:43:54,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:43:54,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-13 06:43:54,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 06:43:54,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 742 [2020-10-13 06:43:54,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 06:43:56,657 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 23 [2020-10-13 06:43:57,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:43:57,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:43:57,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:43:57,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:43:57,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:43:57,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:43:57,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 06:43:57,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:43:57,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:43:57,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:43:57,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 06:43:57,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:44:01,394 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 06:44:01,395 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [840395991] [2020-10-13 06:44:01,397 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 06:44:01,397 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2020-10-13 06:44:01,398 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986859539] [2020-10-13 06:44:01,404 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-13 06:44:01,404 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:44:01,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-13 06:44:01,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2020-10-13 06:44:01,418 INFO L87 Difference]: Start difference. First operand 906 states. Second operand 18 states. [2020-10-13 06:44:04,487 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 93 [2020-10-13 06:44:06,385 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 85 [2020-10-13 06:44:07,366 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 83 [2020-10-13 06:44:15,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:44:15,605 INFO L93 Difference]: Finished difference Result 2548 states and 4905 transitions. [2020-10-13 06:44:15,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 06:44:15,609 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 774 [2020-10-13 06:44:15,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:44:15,684 INFO L225 Difference]: With dead ends: 2548 [2020-10-13 06:44:15,684 INFO L226 Difference]: Without dead ends: 1580 [2020-10-13 06:44:15,697 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=186, Invalid=870, Unknown=0, NotChecked=0, Total=1056 [2020-10-13 06:44:15,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1580 states. [2020-10-13 06:44:15,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1580 to 1580. [2020-10-13 06:44:15,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1580 states. [2020-10-13 06:44:15,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 2339 transitions. [2020-10-13 06:44:15,898 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 2339 transitions. Word has length 774 [2020-10-13 06:44:15,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:44:15,902 INFO L479 AbstractCegarLoop]: Abstraction has 1580 states and 2339 transitions. [2020-10-13 06:44:15,902 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-13 06:44:15,902 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 2339 transitions. [2020-10-13 06:44:15,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 794 [2020-10-13 06:44:15,932 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:44:15,932 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 06:44:15,933 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 06:44:15,933 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:44:15,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:44:15,935 INFO L82 PathProgramCache]: Analyzing trace with hash -23339908, now seen corresponding path program 1 times [2020-10-13 06:44:15,935 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:44:15,936 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [523333459] [2020-10-13 06:44:15,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:44:16,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:44:16,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:44:17,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:44:21,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:44:21,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 809 [2020-10-13 06:44:21,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 06:44:21,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-13 06:44:21,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:44:21,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 06:44:21,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 06:44:21,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 779 [2020-10-13 06:44:21,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:44:21,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:44:21,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:44:21,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:44:21,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:44:21,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:44:21,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:44:21,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:44:21,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:44:21,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:44:21,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:44:21,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:44:21,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:44:21,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:44:21,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:44:21,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:44:21,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:44:21,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 06:44:21,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:44:21,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-13 06:44:21,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:44:21,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:44:21,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:44:21,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 06:44:21,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:44:23,410 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 06:44:23,411 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [523333459] [2020-10-13 06:44:23,411 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:44:23,412 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 06:44:23,412 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607636179] [2020-10-13 06:44:23,415 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 06:44:23,416 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:44:23,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 06:44:23,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 06:44:23,417 INFO L87 Difference]: Start difference. First operand 1580 states and 2339 transitions. Second operand 5 states. [2020-10-13 06:44:31,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:44:31,316 INFO L93 Difference]: Finished difference Result 3272 states and 5552 transitions. [2020-10-13 06:44:31,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 06:44:31,319 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 793 [2020-10-13 06:44:31,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:44:31,334 INFO L225 Difference]: With dead ends: 3272 [2020-10-13 06:44:31,334 INFO L226 Difference]: Without dead ends: 2425 [2020-10-13 06:44:31,338 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 06:44:31,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2425 states. [2020-10-13 06:44:31,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2425 to 2425. [2020-10-13 06:44:31,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2425 states. [2020-10-13 06:44:31,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2425 states to 2425 states and 3478 transitions. [2020-10-13 06:44:31,398 INFO L78 Accepts]: Start accepts. Automaton has 2425 states and 3478 transitions. Word has length 793 [2020-10-13 06:44:31,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:44:31,400 INFO L479 AbstractCegarLoop]: Abstraction has 2425 states and 3478 transitions. [2020-10-13 06:44:31,400 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 06:44:31,401 INFO L276 IsEmpty]: Start isEmpty. Operand 2425 states and 3478 transitions. [2020-10-13 06:44:31,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 802 [2020-10-13 06:44:31,416 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:44:31,417 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:44:31,418 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 06:44:31,418 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:44:31,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:44:31,418 INFO L82 PathProgramCache]: Analyzing trace with hash 1664554635, now seen corresponding path program 1 times [2020-10-13 06:44:31,419 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:44:31,419 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1529235214] [2020-10-13 06:44:31,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:44:31,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:44:31,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:44:32,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:44:33,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:44:36,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:44:36,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 819 [2020-10-13 06:44:36,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:44:36,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-13 06:44:36,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:44:36,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:44:36,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 06:44:36,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 06:44:36,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:44:36,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:44:36,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:44:36,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:44:36,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:44:36,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:44:36,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:44:36,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 06:44:36,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:44:36,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:44:36,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:44:36,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:44:36,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:44:36,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:44:36,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:44:36,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:44:36,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:44:36,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 06:44:36,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:44:36,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 06:44:36,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:44:36,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:44:36,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:44:36,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 06:44:36,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:44:36,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 06:44:36,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:44:36,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:44:36,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:44:36,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 06:44:36,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:44:36,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 06:44:36,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:44:36,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:44:36,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:44:36,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 06:44:36,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:44:36,992 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 26 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 06:44:36,993 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1529235214] [2020-10-13 06:44:36,993 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:44:36,993 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:44:36,994 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138117376] [2020-10-13 06:44:36,995 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:44:36,995 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:44:36,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:44:36,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:44:36,996 INFO L87 Difference]: Start difference. First operand 2425 states and 3478 transitions. Second operand 7 states. [2020-10-13 06:44:51,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:44:51,276 INFO L93 Difference]: Finished difference Result 5885 states and 9149 transitions. [2020-10-13 06:44:51,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:44:51,277 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 801 [2020-10-13 06:44:51,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:44:51,300 INFO L225 Difference]: With dead ends: 5885 [2020-10-13 06:44:51,300 INFO L226 Difference]: Without dead ends: 4193 [2020-10-13 06:44:51,308 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:44:51,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4193 states. [2020-10-13 06:44:51,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4193 to 4146. [2020-10-13 06:44:51,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4146 states. [2020-10-13 06:44:51,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4146 states to 4146 states and 5780 transitions. [2020-10-13 06:44:51,445 INFO L78 Accepts]: Start accepts. Automaton has 4146 states and 5780 transitions. Word has length 801 [2020-10-13 06:44:51,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:44:51,446 INFO L479 AbstractCegarLoop]: Abstraction has 4146 states and 5780 transitions. [2020-10-13 06:44:51,446 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:44:51,446 INFO L276 IsEmpty]: Start isEmpty. Operand 4146 states and 5780 transitions. [2020-10-13 06:44:51,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 801 [2020-10-13 06:44:51,461 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:44:51,462 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:44:51,462 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 06:44:51,462 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:44:51,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:44:51,463 INFO L82 PathProgramCache]: Analyzing trace with hash -1520376234, now seen corresponding path program 1 times [2020-10-13 06:44:51,463 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:44:51,464 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1263326505] [2020-10-13 06:44:51,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:44:51,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:44:51,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:44:51,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:44:53,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:44:56,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:44:56,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 816 [2020-10-13 06:44:56,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:44:56,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-13 06:44:56,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:44:56,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-13 06:44:56,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-13 06:44:56,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 517 [2020-10-13 06:44:56,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:44:58,321 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2020-10-13 06:44:58,435 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 40 [2020-10-13 06:44:58,555 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 40 [2020-10-13 06:44:58,808 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 40 [2020-10-13 06:44:58,952 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 40 [2020-10-13 06:44:59,157 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 47 [2020-10-13 06:44:59,360 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 45 [2020-10-13 06:44:59,562 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 43 [2020-10-13 06:44:59,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:44:59,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:44:59,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:44:59,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:44:59,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:44:59,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:44:59,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 06:44:59,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:44:59,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:44:59,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:44:59,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:44:59,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:44:59,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:44:59,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:45:00,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:45:00,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:45:00,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-13 06:45:00,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:45:00,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 06:45:00,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:45:00,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:45:00,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:45:00,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 06:45:00,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:45:03,925 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 06:45:03,926 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1263326505] [2020-10-13 06:45:03,926 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:45:03,926 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-13 06:45:03,926 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301729173] [2020-10-13 06:45:03,927 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-13 06:45:03,927 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:45:03,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-13 06:45:03,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2020-10-13 06:45:03,928 INFO L87 Difference]: Start difference. First operand 4146 states and 5780 transitions. Second operand 17 states. [2020-10-13 06:45:04,387 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2020-10-13 06:45:08,339 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-10-13 06:45:09,180 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-10-13 06:45:09,473 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 95 [2020-10-13 06:45:09,925 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 94 [2020-10-13 06:45:11,030 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 93 [2020-10-13 06:45:14,160 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 94 [2020-10-13 06:45:18,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:45:18,257 INFO L93 Difference]: Finished difference Result 7273 states and 10646 transitions. [2020-10-13 06:45:18,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-13 06:45:18,259 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 800 [2020-10-13 06:45:18,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:45:18,277 INFO L225 Difference]: With dead ends: 7273 [2020-10-13 06:45:18,277 INFO L226 Difference]: Without dead ends: 3860 [2020-10-13 06:45:18,285 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=153, Invalid=603, Unknown=0, NotChecked=0, Total=756 [2020-10-13 06:45:18,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3860 states. [2020-10-13 06:45:18,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3860 to 3804. [2020-10-13 06:45:18,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3804 states. [2020-10-13 06:45:18,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3804 states to 3804 states and 5003 transitions. [2020-10-13 06:45:18,397 INFO L78 Accepts]: Start accepts. Automaton has 3804 states and 5003 transitions. Word has length 800 [2020-10-13 06:45:18,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:45:18,398 INFO L479 AbstractCegarLoop]: Abstraction has 3804 states and 5003 transitions. [2020-10-13 06:45:18,398 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-13 06:45:18,398 INFO L276 IsEmpty]: Start isEmpty. Operand 3804 states and 5003 transitions. [2020-10-13 06:45:18,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 808 [2020-10-13 06:45:18,412 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:45:18,413 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-13 06:45:18,413 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 06:45:18,413 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:45:18,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:45:18,414 INFO L82 PathProgramCache]: Analyzing trace with hash 1336734335, now seen corresponding path program 1 times [2020-10-13 06:45:18,414 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:45:18,414 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [72938197] [2020-10-13 06:45:18,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:45:18,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:45:18,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:45:18,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:45:20,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:45:23,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:45:23,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 825 [2020-10-13 06:45:23,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:45:23,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-13 06:45:23,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:45:23,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:45:23,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 06:45:23,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 06:45:23,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:45:23,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:45:23,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:45:23,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:45:23,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:45:23,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:45:23,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:45:23,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 06:45:23,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:45:23,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:45:23,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:45:23,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:45:23,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:45:23,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:45:23,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:45:23,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:45:23,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:45:23,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 06:45:23,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:45:23,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 06:45:23,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:45:23,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:45:23,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:45:23,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 06:45:23,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:45:23,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 06:45:23,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:45:23,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:45:23,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:45:23,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-13 06:45:23,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:45:23,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 06:45:23,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:45:23,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:45:23,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:45:23,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 06:45:23,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:45:24,167 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 38 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 06:45:24,168 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [72938197] [2020-10-13 06:45:24,168 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:45:24,168 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:45:24,168 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258135210] [2020-10-13 06:45:24,169 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:45:24,169 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:45:24,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:45:24,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:45:24,170 INFO L87 Difference]: Start difference. First operand 3804 states and 5003 transitions. Second operand 7 states. [2020-10-13 06:45:33,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:45:33,595 INFO L93 Difference]: Finished difference Result 9633 states and 13480 transitions. [2020-10-13 06:45:33,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 06:45:33,596 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 807 [2020-10-13 06:45:33,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:45:33,624 INFO L225 Difference]: With dead ends: 9633 [2020-10-13 06:45:33,624 INFO L226 Difference]: Without dead ends: 6562 [2020-10-13 06:45:33,632 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:45:33,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6562 states. [2020-10-13 06:45:33,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6562 to 6497. [2020-10-13 06:45:33,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6497 states. [2020-10-13 06:45:33,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6497 states to 6497 states and 8576 transitions. [2020-10-13 06:45:33,808 INFO L78 Accepts]: Start accepts. Automaton has 6497 states and 8576 transitions. Word has length 807 [2020-10-13 06:45:33,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:45:33,809 INFO L479 AbstractCegarLoop]: Abstraction has 6497 states and 8576 transitions. [2020-10-13 06:45:33,809 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:45:33,809 INFO L276 IsEmpty]: Start isEmpty. Operand 6497 states and 8576 transitions. [2020-10-13 06:45:33,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 809 [2020-10-13 06:45:33,840 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:45:33,841 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-13 06:45:33,841 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 06:45:33,841 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:45:33,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:45:33,842 INFO L82 PathProgramCache]: Analyzing trace with hash 130800787, now seen corresponding path program 1 times [2020-10-13 06:45:33,842 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:45:33,842 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1114631672] [2020-10-13 06:45:33,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:45:33,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:45:33,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:45:34,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:45:36,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:45:37,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:45:38,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:45:38,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 826 [2020-10-13 06:45:38,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:45:38,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5063 [2020-10-13 06:45:38,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:45:38,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:45:38,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 06:45:38,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 06:45:38,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:45:39,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:45:39,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:45:39,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:45:39,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:45:39,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:45:39,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:45:39,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 06:45:39,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:45:39,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:45:39,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:45:39,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:45:39,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:45:39,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:45:39,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:45:39,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:45:39,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:45:39,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 06:45:39,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:45:39,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 06:45:39,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:45:39,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:45:39,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:45:39,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 06:45:39,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:45:39,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 06:45:39,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:45:39,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:45:39,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:45:39,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 06:45:39,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:45:39,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 06:45:39,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:45:39,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:45:39,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:45:39,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 06:45:39,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:45:39,385 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 40 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 06:45:39,386 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1114631672] [2020-10-13 06:45:39,386 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:45:39,386 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:45:39,386 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817232875] [2020-10-13 06:45:39,387 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:45:39,387 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:45:39,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:45:39,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:45:39,388 INFO L87 Difference]: Start difference. First operand 6497 states and 8576 transitions. Second operand 7 states. [2020-10-13 06:45:48,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:45:48,885 INFO L93 Difference]: Finished difference Result 17623 states and 24478 transitions. [2020-10-13 06:45:48,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 06:45:48,885 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 808 [2020-10-13 06:45:48,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:45:48,924 INFO L225 Difference]: With dead ends: 17623 [2020-10-13 06:45:48,925 INFO L226 Difference]: Without dead ends: 11859 [2020-10-13 06:45:48,942 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:45:48,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11859 states. [2020-10-13 06:45:49,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11859 to 11727. [2020-10-13 06:45:49,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11727 states. [2020-10-13 06:45:49,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11727 states to 11727 states and 14914 transitions. [2020-10-13 06:45:49,260 INFO L78 Accepts]: Start accepts. Automaton has 11727 states and 14914 transitions. Word has length 808 [2020-10-13 06:45:49,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:45:49,261 INFO L479 AbstractCegarLoop]: Abstraction has 11727 states and 14914 transitions. [2020-10-13 06:45:49,261 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:45:49,261 INFO L276 IsEmpty]: Start isEmpty. Operand 11727 states and 14914 transitions. [2020-10-13 06:45:49,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 811 [2020-10-13 06:45:49,290 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:45:49,291 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-13 06:45:49,291 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 06:45:49,292 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:45:49,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:45:49,292 INFO L82 PathProgramCache]: Analyzing trace with hash 1670146831, now seen corresponding path program 1 times [2020-10-13 06:45:49,292 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:45:49,293 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1374146980] [2020-10-13 06:45:49,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:45:49,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:45:49,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:45:51,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:45:51,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 828 [2020-10-13 06:45:51,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:45:51,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1926 [2020-10-13 06:45:51,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:45:51,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 06:45:51,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-13 06:45:51,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 779 [2020-10-13 06:45:51,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:45:51,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:45:51,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:45:51,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:45:51,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:45:51,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:45:51,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:45:51,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 06:45:51,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:45:51,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:45:51,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:45:51,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:45:51,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:45:51,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:45:51,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:45:51,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:45:51,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:45:51,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 06:45:51,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:45:51,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:45:51,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:45:51,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:45:51,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:45:51,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:45:51,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:45:51,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 06:45:51,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:45:51,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:45:51,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:45:51,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 06:45:51,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:45:51,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 06:45:51,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:45:51,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:45:51,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:45:51,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 06:45:51,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:45:52,208 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 31 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-13 06:45:52,209 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1374146980] [2020-10-13 06:45:52,209 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:45:52,209 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 06:45:52,209 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77369336] [2020-10-13 06:45:52,210 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 06:45:52,210 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:45:52,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 06:45:52,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 06:45:52,211 INFO L87 Difference]: Start difference. First operand 11727 states and 14914 transitions. Second operand 5 states. [2020-10-13 06:46:00,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:46:00,761 INFO L93 Difference]: Finished difference Result 32983 states and 43509 transitions. [2020-10-13 06:46:00,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 06:46:00,762 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 810 [2020-10-13 06:46:00,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:46:00,844 INFO L225 Difference]: With dead ends: 32983 [2020-10-13 06:46:00,844 INFO L226 Difference]: Without dead ends: 21989 [2020-10-13 06:46:00,871 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 06:46:00,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21989 states. [2020-10-13 06:46:02,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21989 to 21986. [2020-10-13 06:46:02,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21986 states. [2020-10-13 06:46:02,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21986 states to 21986 states and 28109 transitions. [2020-10-13 06:46:02,226 INFO L78 Accepts]: Start accepts. Automaton has 21986 states and 28109 transitions. Word has length 810 [2020-10-13 06:46:02,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:46:02,228 INFO L479 AbstractCegarLoop]: Abstraction has 21986 states and 28109 transitions. [2020-10-13 06:46:02,228 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 06:46:02,228 INFO L276 IsEmpty]: Start isEmpty. Operand 21986 states and 28109 transitions. [2020-10-13 06:46:02,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 907 [2020-10-13 06:46:02,279 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:46:02,280 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:46:02,280 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 06:46:02,281 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:46:02,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:46:02,281 INFO L82 PathProgramCache]: Analyzing trace with hash 540634868, now seen corresponding path program 1 times [2020-10-13 06:46:02,285 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:46:02,285 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1460642391] [2020-10-13 06:46:02,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:46:02,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:46:02,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:46:02,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:46:03,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:46:03,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:46:03,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:46:07,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:46:07,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 930 [2020-10-13 06:46:07,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 06:46:07,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-13 06:46:07,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:46:07,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:46:07,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 133 [2020-10-13 06:46:07,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 06:46:07,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:46:07,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:46:07,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:46:07,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:46:07,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:46:07,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:46:07,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:46:07,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:46:07,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:46:07,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:46:07,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:46:07,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:46:07,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:46:07,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:46:07,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:46:07,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:46:07,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:46:07,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 06:46:07,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:46:07,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 06:46:07,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:46:07,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:46:07,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:46:07,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:46:07,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:46:07,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 06:46:07,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:46:07,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:46:07,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:46:07,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 06:46:07,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:46:07,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 06:46:07,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:46:07,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:46:07,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:46:07,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:46:07,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:46:07,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-13 06:46:07,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:46:07,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:46:07,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:46:07,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 06:46:07,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:46:07,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 06:46:07,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:46:07,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:46:07,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:46:07,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:46:07,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 06:46:07,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-13 06:46:07,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:46:07,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:46:07,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:46:07,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-13 06:46:07,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:46:07,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-13 06:46:07,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:46:07,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:46:07,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:46:07,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-13 06:46:07,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:46:07,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-13 06:46:07,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:46:07,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:46:07,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:46:07,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 06:46:07,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:46:07,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 06:46:07,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:46:07,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:46:07,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:46:07,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 06:46:07,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:46:08,316 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 180 proven. 2 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2020-10-13 06:46:08,316 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1460642391] [2020-10-13 06:46:08,316 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:46:08,317 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:46:08,317 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548666689] [2020-10-13 06:46:08,318 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:46:08,318 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:46:08,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:46:08,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:46:08,319 INFO L87 Difference]: Start difference. First operand 21986 states and 28109 transitions. Second operand 7 states. [2020-10-13 06:46:18,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:46:18,574 INFO L93 Difference]: Finished difference Result 62347 states and 82620 transitions. [2020-10-13 06:46:18,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 06:46:18,578 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 906 [2020-10-13 06:46:18,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:46:18,701 INFO L225 Difference]: With dead ends: 62347 [2020-10-13 06:46:18,701 INFO L226 Difference]: Without dead ends: 41094 [2020-10-13 06:46:18,752 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:46:18,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41094 states. [2020-10-13 06:46:19,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41094 to 40942. [2020-10-13 06:46:19,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40942 states. [2020-10-13 06:46:19,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40942 states to 40942 states and 52697 transitions. [2020-10-13 06:46:19,454 INFO L78 Accepts]: Start accepts. Automaton has 40942 states and 52697 transitions. Word has length 906 [2020-10-13 06:46:19,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:46:19,455 INFO L479 AbstractCegarLoop]: Abstraction has 40942 states and 52697 transitions. [2020-10-13 06:46:19,455 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:46:19,455 INFO L276 IsEmpty]: Start isEmpty. Operand 40942 states and 52697 transitions. [2020-10-13 06:46:19,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 919 [2020-10-13 06:46:19,556 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:46:19,556 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-10-13 06:46:19,557 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 06:46:19,557 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:46:19,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:46:19,557 INFO L82 PathProgramCache]: Analyzing trace with hash -1171953353, now seen corresponding path program 1 times [2020-10-13 06:46:19,558 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:46:19,558 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1017879912] [2020-10-13 06:46:19,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:46:19,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:46:19,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:46:21,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:46:24,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:46:24,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 936 [2020-10-13 06:46:24,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 06:46:24,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5043 [2020-10-13 06:46:24,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:46:24,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-13 06:46:24,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 156 [2020-10-13 06:46:24,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 713 [2020-10-13 06:46:24,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:46:25,821 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 36 [2020-10-13 06:46:26,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:46:26,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:46:26,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:46:26,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:46:26,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:46:26,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:46:26,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 06:46:26,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:46:26,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:46:26,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:46:26,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:46:26,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:46:27,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:46:27,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:46:27,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:46:27,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:46:27,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 06:46:27,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:46:27,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 06:46:27,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:46:27,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:46:27,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:46:27,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:46:27,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:46:27,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 06:46:27,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:46:27,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:46:27,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:46:27,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-13 06:46:27,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:46:27,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-13 06:46:27,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:46:27,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:46:27,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:46:27,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-13 06:46:27,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:46:31,692 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 139 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-13 06:46:31,692 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1017879912] [2020-10-13 06:46:31,693 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:46:31,693 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-13 06:46:31,693 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908530795] [2020-10-13 06:46:31,694 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-13 06:46:31,694 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:46:31,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-13 06:46:31,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2020-10-13 06:46:31,695 INFO L87 Difference]: Start difference. First operand 40942 states and 52697 transitions. Second operand 19 states. [2020-10-13 06:46:32,584 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-13 06:46:34,979 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-13 06:46:36,327 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-13 06:46:46,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:46:46,263 INFO L93 Difference]: Finished difference Result 81863 states and 105630 transitions. [2020-10-13 06:46:46,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 06:46:46,264 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 918 [2020-10-13 06:46:46,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:46:46,403 INFO L225 Difference]: With dead ends: 81863 [2020-10-13 06:46:46,403 INFO L226 Difference]: Without dead ends: 41654 [2020-10-13 06:46:46,464 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=167, Invalid=825, Unknown=0, NotChecked=0, Total=992 [2020-10-13 06:46:46,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41654 states. [2020-10-13 06:46:47,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41654 to 41646. [2020-10-13 06:46:47,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41646 states. [2020-10-13 06:46:47,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41646 states to 41646 states and 53458 transitions. [2020-10-13 06:46:47,396 INFO L78 Accepts]: Start accepts. Automaton has 41646 states and 53458 transitions. Word has length 918 [2020-10-13 06:46:47,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:46:47,397 INFO L479 AbstractCegarLoop]: Abstraction has 41646 states and 53458 transitions. [2020-10-13 06:46:47,397 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-13 06:46:47,397 INFO L276 IsEmpty]: Start isEmpty. Operand 41646 states and 53458 transitions. [2020-10-13 06:46:47,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 933 [2020-10-13 06:46:47,449 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:46:47,450 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:46:47,450 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 06:46:47,450 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:46:47,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:46:47,451 INFO L82 PathProgramCache]: Analyzing trace with hash -1630805382, now seen corresponding path program 1 times [2020-10-13 06:46:47,451 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:46:47,451 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1031812162] [2020-10-13 06:46:47,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:46:47,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:46:47,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:46:47,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:46:47,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:46:49,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:46:52,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:46:52,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 952 [2020-10-13 06:46:52,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:46:52,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-13 06:46:52,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:46:52,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:46:52,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-13 06:46:52,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-13 06:46:52,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:46:52,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:46:52,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:46:52,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:46:52,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:46:52,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:46:52,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:46:52,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 06:46:52,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:46:52,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:46:52,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:46:52,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:46:52,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:46:52,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:46:52,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:46:52,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:46:52,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:46:52,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 06:46:52,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:46:52,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 06:46:52,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:46:52,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:46:52,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:46:52,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:46:52,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:46:52,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 06:46:52,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:46:52,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:46:52,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:46:52,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 06:46:52,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:46:52,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 06:46:52,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:46:52,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:46:52,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:46:52,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 06:46:52,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:46:52,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-13 06:46:52,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:46:52,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:46:52,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:46:52,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-13 06:46:52,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:46:52,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-13 06:46:52,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:46:52,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:46:52,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:46:52,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-13 06:46:52,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:46:53,263 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 184 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-13 06:46:53,264 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1031812162] [2020-10-13 06:46:53,264 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:46:53,264 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:46:53,264 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671342248] [2020-10-13 06:46:53,265 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:46:53,265 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:46:53,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:46:53,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:46:53,266 INFO L87 Difference]: Start difference. First operand 41646 states and 53458 transitions. Second operand 7 states. [2020-10-13 06:47:03,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:47:03,474 INFO L93 Difference]: Finished difference Result 95683 states and 128506 transitions. [2020-10-13 06:47:03,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:47:03,475 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 932 [2020-10-13 06:47:03,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:47:03,662 INFO L225 Difference]: With dead ends: 95683 [2020-10-13 06:47:03,662 INFO L226 Difference]: Without dead ends: 54770 [2020-10-13 06:47:03,723 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:47:03,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54770 states. [2020-10-13 06:47:04,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54770 to 54569. [2020-10-13 06:47:04,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54569 states. [2020-10-13 06:47:04,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54569 states to 54569 states and 70006 transitions. [2020-10-13 06:47:04,561 INFO L78 Accepts]: Start accepts. Automaton has 54569 states and 70006 transitions. Word has length 932 [2020-10-13 06:47:04,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:47:04,561 INFO L479 AbstractCegarLoop]: Abstraction has 54569 states and 70006 transitions. [2020-10-13 06:47:04,561 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:47:04,561 INFO L276 IsEmpty]: Start isEmpty. Operand 54569 states and 70006 transitions. [2020-10-13 06:47:04,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1074 [2020-10-13 06:47:04,606 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:47:04,606 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 06:47:04,607 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 06:47:04,607 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:47:04,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:47:04,607 INFO L82 PathProgramCache]: Analyzing trace with hash 1794492905, now seen corresponding path program 1 times [2020-10-13 06:47:04,608 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:47:04,608 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1078271797] [2020-10-13 06:47:04,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:47:04,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:47:04,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:47:04,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:47:05,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:47:05,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:47:09,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:47:09,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1095 [2020-10-13 06:47:09,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:47:09,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5060 [2020-10-13 06:47:09,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:47:09,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:47:09,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 181 [2020-10-13 06:47:09,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-13 06:47:09,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:47:10,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:47:10,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:47:10,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:47:10,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:47:10,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:47:10,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:47:10,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 06:47:10,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:47:10,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:47:10,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:47:10,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:47:10,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:47:10,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:47:10,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:47:10,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:47:10,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:47:10,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 06:47:10,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:47:10,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 06:47:10,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:47:10,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:47:10,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:47:10,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:47:10,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:47:10,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 06:47:10,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:47:10,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:47:10,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:47:10,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-13 06:47:10,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:47:10,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-13 06:47:10,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:47:10,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:47:10,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:47:10,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 145 [2020-10-13 06:47:10,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:47:10,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-10-13 06:47:10,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:47:10,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:47:10,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:47:10,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-13 06:47:10,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:47:10,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-13 06:47:10,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:47:10,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:47:10,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:47:10,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-13 06:47:10,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:47:10,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-13 06:47:10,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:47:10,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:47:10,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:47:10,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-13 06:47:10,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:47:10,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-13 06:47:10,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:47:10,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:47:10,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-13 06:47:10,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:47:10,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:47:10,992 INFO L134 CoverageAnalysis]: Checked inductivity of 524 backedges. 363 proven. 49 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2020-10-13 06:47:10,992 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1078271797] [2020-10-13 06:47:10,992 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:47:10,992 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:47:10,993 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571253677] [2020-10-13 06:47:10,993 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:47:10,993 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:47:10,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:47:10,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:47:10,994 INFO L87 Difference]: Start difference. First operand 54569 states and 70006 transitions. Second operand 7 states.