/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/Problem18_label06.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 09:43:48,847 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 09:43:48,849 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 09:43:48,872 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 09:43:48,872 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 09:43:48,873 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 09:43:48,875 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 09:43:48,876 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 09:43:48,878 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 09:43:48,879 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 09:43:48,880 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 09:43:48,881 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 09:43:48,881 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 09:43:48,882 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 09:43:48,883 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 09:43:48,884 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 09:43:48,885 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 09:43:48,886 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 09:43:48,887 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 09:43:48,889 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 09:43:48,890 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 09:43:48,891 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 09:43:48,892 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 09:43:48,893 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 09:43:48,895 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 09:43:48,895 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 09:43:48,896 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 09:43:48,897 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 09:43:48,897 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 09:43:48,898 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 09:43:48,898 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 09:43:48,899 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 09:43:48,899 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 09:43:48,900 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 09:43:48,901 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 09:43:48,901 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 09:43:48,902 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 09:43:48,902 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 09:43:48,902 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 09:43:48,903 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 09:43:48,904 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 09:43:48,905 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 09:43:48,938 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 09:43:48,938 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 09:43:48,940 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 09:43:48,940 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 09:43:48,940 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 09:43:48,940 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 09:43:48,940 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 09:43:48,941 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 09:43:48,941 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 09:43:48,941 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 09:43:48,941 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 09:43:48,941 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 09:43:48,941 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 09:43:48,942 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 09:43:48,942 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 09:43:48,942 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 09:43:48,942 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 09:43:48,942 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 09:43:48,943 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 09:43:48,943 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 09:43:48,944 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 09:43:48,945 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 09:43:48,945 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 09:43:48,945 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 09:43:48,945 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 09:43:48,946 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 09:43:48,946 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 09:43:48,946 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 09:43:48,946 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 09:43:48,946 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 09:43:49,242 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 09:43:49,259 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 09:43:49,262 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 09:43:49,266 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 09:43:49,267 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 09:43:49,267 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label06.c [2020-10-13 09:43:49,337 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3e9edab0b/95c832e9a2954a80b730224c151a6215/FLAG9ad3a62ce [2020-10-13 09:43:50,102 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 09:43:50,103 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem18_label06.c [2020-10-13 09:43:50,130 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3e9edab0b/95c832e9a2954a80b730224c151a6215/FLAG9ad3a62ce [2020-10-13 09:43:50,214 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3e9edab0b/95c832e9a2954a80b730224c151a6215 [2020-10-13 09:43:50,225 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 09:43:50,227 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 09:43:50,230 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 09:43:50,230 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 09:43:50,233 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 09:43:50,234 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:43:50" (1/1) ... [2020-10-13 09:43:50,237 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@176ea22d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:43:50, skipping insertion in model container [2020-10-13 09:43:50,237 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:43:50" (1/1) ... [2020-10-13 09:43:50,245 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 09:43:50,364 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 09:43:51,669 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 09:43:51,677 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 09:43:52,204 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 09:43:52,229 INFO L208 MainTranslator]: Completed translation [2020-10-13 09:43:52,230 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:43:52 WrapperNode [2020-10-13 09:43:52,230 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 09:43:52,231 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 09:43:52,231 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 09:43:52,231 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 09:43:52,245 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:43:52" (1/1) ... [2020-10-13 09:43:52,247 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:43:52" (1/1) ... [2020-10-13 09:43:52,306 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:43:52" (1/1) ... [2020-10-13 09:43:52,306 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:43:52" (1/1) ... [2020-10-13 09:43:52,405 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:43:52" (1/1) ... [2020-10-13 09:43:52,440 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:43:52" (1/1) ... [2020-10-13 09:43:52,462 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:43:52" (1/1) ... [2020-10-13 09:43:52,484 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 09:43:52,484 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 09:43:52,485 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 09:43:52,485 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 09:43:52,486 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:43:52" (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 09:43:52,600 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 09:43:52,601 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 09:43:52,601 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 09:43:52,601 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 09:43:52,601 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-13 09:43:52,601 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 09:43:52,602 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 09:43:52,602 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 09:43:52,602 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-13 09:43:52,602 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 09:43:52,602 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 09:43:52,602 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 09:43:52,603 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 09:43:52,603 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 09:43:52,603 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 09:43:58,582 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 09:43:58,582 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 09:43:58,592 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:43:58 BoogieIcfgContainer [2020-10-13 09:43:58,592 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 09:43:58,594 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 09:43:58,594 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 09:43:58,597 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 09:43:58,597 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:43:50" (1/3) ... [2020-10-13 09:43:58,598 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71ce3a19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:43:58, skipping insertion in model container [2020-10-13 09:43:58,598 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:43:52" (2/3) ... [2020-10-13 09:43:58,599 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71ce3a19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:43:58, skipping insertion in model container [2020-10-13 09:43:58,599 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:43:58" (3/3) ... [2020-10-13 09:43:58,601 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem18_label06.c [2020-10-13 09:43:58,611 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 09:43:58,620 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 09:43:58,634 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 09:43:58,661 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 09:43:58,661 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 09:43:58,661 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 09:43:58,661 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 09:43:58,662 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 09:43:58,662 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 09:43:58,662 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 09:43:58,662 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 09:43:58,701 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states. [2020-10-13 09:43:58,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-13 09:43:58,710 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:43:58,711 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] [2020-10-13 09:43:58,712 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:43:58,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:43:58,718 INFO L82 PathProgramCache]: Analyzing trace with hash -760055654, now seen corresponding path program 1 times [2020-10-13 09:43:58,727 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:43:58,727 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [79310547] [2020-10-13 09:43:58,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:43:58,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:43:58,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:43:59,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:43:59,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-13 09:43:59,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:43:59,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 341 [2020-10-13 09:43:59,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:43:59,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 09:43:59,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:43:59,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-13 09:43:59,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-13 09:43:59,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:43:59,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:43:59,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:43:59,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:43:59,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:43:59,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:43:59,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 09:43:59,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:43:59,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:43:59,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:43:59,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:43:59,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:43:59,474 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 09:43:59,476 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [79310547] [2020-10-13 09:43:59,478 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 09:43:59,478 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 09:43:59,479 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326779077] [2020-10-13 09:43:59,484 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 09:43:59,485 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:43:59,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 09:43:59,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 09:43:59,503 INFO L87 Difference]: Start difference. First operand 774 states. Second operand 4 states. [2020-10-13 09:44:09,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:44:09,341 INFO L93 Difference]: Finished difference Result 2270 states and 4349 transitions. [2020-10-13 09:44:09,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:44:09,343 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2020-10-13 09:44:09,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:44:09,433 INFO L225 Difference]: With dead ends: 2270 [2020-10-13 09:44:09,433 INFO L226 Difference]: Without dead ends: 1432 [2020-10-13 09:44:09,441 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:44:09,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1432 states. [2020-10-13 09:44:09,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1432 to 1425. [2020-10-13 09:44:09,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1425 states. [2020-10-13 09:44:09,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1425 states to 1425 states and 2229 transitions. [2020-10-13 09:44:09,570 INFO L78 Accepts]: Start accepts. Automaton has 1425 states and 2229 transitions. Word has length 31 [2020-10-13 09:44:09,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:44:09,571 INFO L479 AbstractCegarLoop]: Abstraction has 1425 states and 2229 transitions. [2020-10-13 09:44:09,571 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 09:44:09,571 INFO L276 IsEmpty]: Start isEmpty. Operand 1425 states and 2229 transitions. [2020-10-13 09:44:09,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-13 09:44:09,576 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:44:09,576 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:44:09,577 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 09:44:09,577 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:44:09,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:44:09,577 INFO L82 PathProgramCache]: Analyzing trace with hash -2107237442, now seen corresponding path program 1 times [2020-10-13 09:44:09,578 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:44:09,578 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1935105372] [2020-10-13 09:44:09,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:44:09,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:44:09,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:44:09,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:44:10,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:44:10,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 09:44:10,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:44:10,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 670 [2020-10-13 09:44:10,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:44:10,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:44:10,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-13 09:44:10,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 09:44:10,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 09:44:10,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:44:10,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:44:10,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:44:10,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:44:10,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:44:10,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:44:10,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 09:44:10,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:44:10,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:44:10,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:44:10,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:44:10,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:44:10,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:44:10,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:44:10,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:44:10,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:44:10,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-13 09:44:10,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:44:10,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-13 09:44:10,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:44:10,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:44:10,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:44:10,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-13 09:44:10,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-10-13 09:44:10,570 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 23 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:44:10,570 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1935105372] [2020-10-13 09:44:10,571 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:44:10,571 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:44:10,571 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844279944] [2020-10-13 09:44:10,574 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:44:10,575 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:44:10,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:44:10,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:44:10,576 INFO L87 Difference]: Start difference. First operand 1425 states and 2229 transitions. Second operand 5 states. [2020-10-13 09:44:23,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:44:23,869 INFO L93 Difference]: Finished difference Result 4276 states and 6734 transitions. [2020-10-13 09:44:23,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:44:23,872 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 101 [2020-10-13 09:44:23,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:44:23,887 INFO L225 Difference]: With dead ends: 4276 [2020-10-13 09:44:23,888 INFO L226 Difference]: Without dead ends: 2857 [2020-10-13 09:44:23,892 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:44:23,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2857 states. [2020-10-13 09:44:23,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2857 to 2853. [2020-10-13 09:44:23,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2853 states. [2020-10-13 09:44:23,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2853 states to 2853 states and 4026 transitions. [2020-10-13 09:44:23,968 INFO L78 Accepts]: Start accepts. Automaton has 2853 states and 4026 transitions. Word has length 101 [2020-10-13 09:44:23,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:44:23,969 INFO L479 AbstractCegarLoop]: Abstraction has 2853 states and 4026 transitions. [2020-10-13 09:44:23,969 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:44:23,970 INFO L276 IsEmpty]: Start isEmpty. Operand 2853 states and 4026 transitions. [2020-10-13 09:44:23,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-13 09:44:23,972 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:44:23,973 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:44:23,973 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 09:44:23,973 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:44:23,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:44:23,974 INFO L82 PathProgramCache]: Analyzing trace with hash 1597651206, now seen corresponding path program 1 times [2020-10-13 09:44:23,974 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:44:23,974 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1361014495] [2020-10-13 09:44:23,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:44:24,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:44:24,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:44:24,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:44:24,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:44:24,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-13 09:44:24,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:44:24,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 717 [2020-10-13 09:44:24,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:44:24,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:44:24,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-13 09:44:24,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 09:44:24,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:44:24,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:44:24,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:44:24,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:44:24,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:44:24,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:44:24,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:44:24,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 09:44:24,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:44:24,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:44:24,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:44:24,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:44:24,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:44:24,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:44:24,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:44:24,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:44:24,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:44:24,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-13 09:44:24,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:44:24,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-13 09:44:24,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:44:24,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:44:24,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:44:24,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-13 09:44:24,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:44:24,981 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 23 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:44:24,982 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1361014495] [2020-10-13 09:44:24,982 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:44:24,982 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:44:24,982 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552944969] [2020-10-13 09:44:24,983 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:44:24,983 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:44:24,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:44:24,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:44:24,984 INFO L87 Difference]: Start difference. First operand 2853 states and 4026 transitions. Second operand 5 states. [2020-10-13 09:44:42,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:44:42,126 INFO L93 Difference]: Finished difference Result 8547 states and 12183 transitions. [2020-10-13 09:44:42,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:44:42,130 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 105 [2020-10-13 09:44:42,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:44:42,159 INFO L225 Difference]: With dead ends: 8547 [2020-10-13 09:44:42,160 INFO L226 Difference]: Without dead ends: 5700 [2020-10-13 09:44:42,167 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:44:42,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5700 states. [2020-10-13 09:44:42,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5700 to 5696. [2020-10-13 09:44:42,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5696 states. [2020-10-13 09:44:42,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5696 states to 5696 states and 7350 transitions. [2020-10-13 09:44:42,315 INFO L78 Accepts]: Start accepts. Automaton has 5696 states and 7350 transitions. Word has length 105 [2020-10-13 09:44:42,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:44:42,317 INFO L479 AbstractCegarLoop]: Abstraction has 5696 states and 7350 transitions. [2020-10-13 09:44:42,317 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:44:42,318 INFO L276 IsEmpty]: Start isEmpty. Operand 5696 states and 7350 transitions. [2020-10-13 09:44:42,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-13 09:44:42,321 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:44:42,321 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:44:42,321 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 09:44:42,322 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:44:42,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:44:42,322 INFO L82 PathProgramCache]: Analyzing trace with hash 1715039106, now seen corresponding path program 1 times [2020-10-13 09:44:42,322 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:44:42,322 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1129336881] [2020-10-13 09:44:42,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:44:42,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:44:42,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:44:42,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:44:42,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:44:42,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:44:42,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-13 09:44:42,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:44:42,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 627 [2020-10-13 09:44:42,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:44:42,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:44:42,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-10-13 09:44:42,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 09:44:42,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:44:43,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:44:43,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:44:43,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:44:43,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:44:43,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:44:43,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:44:43,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:44:43,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:44:43,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:44:43,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:44:43,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:44:43,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:44:43,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:44:43,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:44:43,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:44:43,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:44:43,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-13 09:44:43,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:44:43,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-13 09:44:43,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:44:43,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:44:43,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:44:43,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-13 09:44:43,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:44:43,434 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 23 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:44:43,435 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1129336881] [2020-10-13 09:44:43,435 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:44:43,435 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:44:43,436 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626532832] [2020-10-13 09:44:43,436 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:44:43,437 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:44:43,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:44:43,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:44:43,437 INFO L87 Difference]: Start difference. First operand 5696 states and 7350 transitions. Second operand 5 states. [2020-10-13 09:44:49,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:44:49,788 INFO L93 Difference]: Finished difference Result 11408 states and 14745 transitions. [2020-10-13 09:44:49,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:44:49,794 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 119 [2020-10-13 09:44:49,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:44:49,818 INFO L225 Difference]: With dead ends: 11408 [2020-10-13 09:44:49,819 INFO L226 Difference]: Without dead ends: 5700 [2020-10-13 09:44:49,833 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:44:49,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5700 states. [2020-10-13 09:44:49,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5700 to 5696. [2020-10-13 09:44:49,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5696 states. [2020-10-13 09:44:49,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5696 states to 5696 states and 7342 transitions. [2020-10-13 09:44:49,946 INFO L78 Accepts]: Start accepts. Automaton has 5696 states and 7342 transitions. Word has length 119 [2020-10-13 09:44:49,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:44:49,946 INFO L479 AbstractCegarLoop]: Abstraction has 5696 states and 7342 transitions. [2020-10-13 09:44:49,947 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:44:49,947 INFO L276 IsEmpty]: Start isEmpty. Operand 5696 states and 7342 transitions. [2020-10-13 09:44:49,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-13 09:44:49,949 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:44:49,949 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:44:49,949 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 09:44:49,949 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:44:49,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:44:49,950 INFO L82 PathProgramCache]: Analyzing trace with hash -1473581530, now seen corresponding path program 1 times [2020-10-13 09:44:49,950 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:44:49,950 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [15097223] [2020-10-13 09:44:49,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:44:49,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:44:49,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:44:50,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:44:50,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:44:50,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-13 09:44:50,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:44:50,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 585 [2020-10-13 09:44:50,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:44:50,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:44:50,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 100 [2020-10-13 09:44:50,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 09:44:50,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:44:50,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:44:50,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:44:50,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:44:50,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:44:50,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:44:50,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:44:50,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:44:50,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:44:50,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:44:50,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:44:50,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:44:50,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:44:50,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:44:50,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:44:50,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:44:50,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:44:50,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-13 09:44:50,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:44:50,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-13 09:44:50,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:44:50,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:44:50,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:44:50,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-13 09:44:50,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:44:50,765 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 23 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:44:50,765 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [15097223] [2020-10-13 09:44:50,766 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:44:50,766 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:44:50,766 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423281428] [2020-10-13 09:44:50,767 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:44:50,768 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:44:50,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:44:50,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:44:50,769 INFO L87 Difference]: Start difference. First operand 5696 states and 7342 transitions. Second operand 5 states. [2020-10-13 09:45:00,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:45:00,599 INFO L93 Difference]: Finished difference Result 14231 states and 18833 transitions. [2020-10-13 09:45:00,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:45:00,600 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 121 [2020-10-13 09:45:00,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:45:00,636 INFO L225 Difference]: With dead ends: 14231 [2020-10-13 09:45:00,636 INFO L226 Difference]: Without dead ends: 8541 [2020-10-13 09:45:00,653 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:45:00,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8541 states. [2020-10-13 09:45:00,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8541 to 8533. [2020-10-13 09:45:00,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8533 states. [2020-10-13 09:45:00,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8533 states to 8533 states and 10768 transitions. [2020-10-13 09:45:00,844 INFO L78 Accepts]: Start accepts. Automaton has 8533 states and 10768 transitions. Word has length 121 [2020-10-13 09:45:00,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:45:00,845 INFO L479 AbstractCegarLoop]: Abstraction has 8533 states and 10768 transitions. [2020-10-13 09:45:00,845 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:45:00,845 INFO L276 IsEmpty]: Start isEmpty. Operand 8533 states and 10768 transitions. [2020-10-13 09:45:00,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-13 09:45:00,847 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:45:00,847 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:45:00,847 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 09:45:00,848 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:45:00,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:45:00,848 INFO L82 PathProgramCache]: Analyzing trace with hash 583967923, now seen corresponding path program 1 times [2020-10-13 09:45:00,848 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:45:00,849 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [97548750] [2020-10-13 09:45:00,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:45:00,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:45:00,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:45:01,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:45:01,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:45:01,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:45:01,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-13 09:45:01,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:45:01,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 843 [2020-10-13 09:45:01,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:45:01,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:45:01,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-13 09:45:01,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 09:45:01,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:45:01,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:45:01,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:45:01,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:45:01,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:45:01,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:45:01,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:45:01,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:45:01,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:45:01,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:45:01,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:45:01,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:45:01,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:45:01,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:45:01,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:45:01,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:45:01,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:45:01,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-13 09:45:01,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:45:01,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-13 09:45:01,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:45:01,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:45:01,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:45:01,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-13 09:45:01,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:45:01,992 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 23 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:45:01,992 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [97548750] [2020-10-13 09:45:01,993 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:45:01,993 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:45:01,994 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895266749] [2020-10-13 09:45:01,994 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:45:01,994 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:45:01,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:45:01,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:45:01,995 INFO L87 Difference]: Start difference. First operand 8533 states and 10768 transitions. Second operand 5 states. [2020-10-13 09:45:09,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:45:09,625 INFO L93 Difference]: Finished difference Result 17087 states and 21610 transitions. [2020-10-13 09:45:09,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:45:09,625 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 126 [2020-10-13 09:45:09,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:45:09,660 INFO L225 Difference]: With dead ends: 17087 [2020-10-13 09:45:09,660 INFO L226 Difference]: Without dead ends: 8541 [2020-10-13 09:45:09,678 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:45:09,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8541 states. [2020-10-13 09:45:09,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8541 to 8533. [2020-10-13 09:45:09,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8533 states. [2020-10-13 09:45:09,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8533 states to 8533 states and 10756 transitions. [2020-10-13 09:45:09,845 INFO L78 Accepts]: Start accepts. Automaton has 8533 states and 10756 transitions. Word has length 126 [2020-10-13 09:45:09,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:45:09,845 INFO L479 AbstractCegarLoop]: Abstraction has 8533 states and 10756 transitions. [2020-10-13 09:45:09,846 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:45:09,846 INFO L276 IsEmpty]: Start isEmpty. Operand 8533 states and 10756 transitions. [2020-10-13 09:45:09,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-13 09:45:09,848 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:45:09,848 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:45:09,848 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 09:45:09,849 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:45:09,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:45:09,849 INFO L82 PathProgramCache]: Analyzing trace with hash -2086849581, now seen corresponding path program 1 times [2020-10-13 09:45:09,849 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:45:09,849 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1472847568] [2020-10-13 09:45:09,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:45:09,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:45:09,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:45:10,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:45:10,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:45:10,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-13 09:45:10,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:45:10,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 704 [2020-10-13 09:45:10,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:45:10,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:45:10,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 121 [2020-10-13 09:45:10,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 09:45:10,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:45:10,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:45:10,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:45:10,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:45:10,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:45:10,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:45:10,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:45:10,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:45:10,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:45:10,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:45:10,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:45:10,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:45:10,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:45:10,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:45:10,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:45:10,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:45:10,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:45:10,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-13 09:45:10,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:45:10,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-13 09:45:10,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:45:10,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:45:10,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:45:10,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-13 09:45:10,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:45:10,831 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 23 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:45:10,831 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1472847568] [2020-10-13 09:45:10,832 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:45:10,832 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 09:45:10,833 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969244245] [2020-10-13 09:45:10,833 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 09:45:10,834 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:45:10,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 09:45:10,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:45:10,834 INFO L87 Difference]: Start difference. First operand 8533 states and 10756 transitions. Second operand 6 states. [2020-10-13 09:45:26,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:45:26,373 INFO L93 Difference]: Finished difference Result 23455 states and 31351 transitions. [2020-10-13 09:45:26,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 09:45:26,374 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 142 [2020-10-13 09:45:26,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:45:26,419 INFO L225 Difference]: With dead ends: 23455 [2020-10-13 09:45:26,420 INFO L226 Difference]: Without dead ends: 14928 [2020-10-13 09:45:26,435 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 09:45:26,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14928 states. [2020-10-13 09:45:26,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14928 to 14920. [2020-10-13 09:45:26,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14920 states. [2020-10-13 09:45:26,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14920 states to 14920 states and 19143 transitions. [2020-10-13 09:45:26,700 INFO L78 Accepts]: Start accepts. Automaton has 14920 states and 19143 transitions. Word has length 142 [2020-10-13 09:45:26,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:45:26,700 INFO L479 AbstractCegarLoop]: Abstraction has 14920 states and 19143 transitions. [2020-10-13 09:45:26,700 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 09:45:26,700 INFO L276 IsEmpty]: Start isEmpty. Operand 14920 states and 19143 transitions. [2020-10-13 09:45:26,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-10-13 09:45:26,703 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:45:26,704 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:45:26,704 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 09:45:26,704 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:45:26,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:45:26,705 INFO L82 PathProgramCache]: Analyzing trace with hash -1998956442, now seen corresponding path program 1 times [2020-10-13 09:45:26,705 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:45:26,705 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [910910836] [2020-10-13 09:45:26,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:45:26,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:45:26,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:45:26,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:45:27,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:45:27,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-13 09:45:27,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:45:27,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 944 [2020-10-13 09:45:27,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:45:27,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:45:27,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 132 [2020-10-13 09:45:27,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 09:45:27,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:45:27,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:45:27,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:45:27,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:45:27,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:45:27,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:45:27,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:45:27,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 09:45:27,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:45:27,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:45:27,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:45:27,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:45:27,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:45:27,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:45:27,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:45:27,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:45:27,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:45:27,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-13 09:45:27,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:45:27,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-13 09:45:27,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:45:27,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:45:27,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:45:27,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-13 09:45:27,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:45:27,946 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 23 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:45:27,946 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [910910836] [2020-10-13 09:45:27,946 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:45:27,947 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:45:27,947 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494739041] [2020-10-13 09:45:27,947 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:45:27,948 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:45:27,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:45:27,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:45:27,948 INFO L87 Difference]: Start difference. First operand 14920 states and 19143 transitions. Second operand 5 states. [2020-10-13 09:45:40,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:45:40,428 INFO L93 Difference]: Finished difference Result 38338 states and 50446 transitions. [2020-10-13 09:45:40,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:45:40,429 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 153 [2020-10-13 09:45:40,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:45:40,521 INFO L225 Difference]: With dead ends: 38338 [2020-10-13 09:45:40,522 INFO L226 Difference]: Without dead ends: 23424 [2020-10-13 09:45:40,553 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:45:40,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23424 states. [2020-10-13 09:45:40,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23424 to 23416. [2020-10-13 09:45:40,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23416 states. [2020-10-13 09:45:41,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23416 states to 23416 states and 29506 transitions. [2020-10-13 09:45:41,026 INFO L78 Accepts]: Start accepts. Automaton has 23416 states and 29506 transitions. Word has length 153 [2020-10-13 09:45:41,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:45:41,027 INFO L479 AbstractCegarLoop]: Abstraction has 23416 states and 29506 transitions. [2020-10-13 09:45:41,027 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:45:41,027 INFO L276 IsEmpty]: Start isEmpty. Operand 23416 states and 29506 transitions. [2020-10-13 09:45:41,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-10-13 09:45:41,032 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:45:41,032 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:45:41,033 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 09:45:41,033 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:45:41,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:45:41,033 INFO L82 PathProgramCache]: Analyzing trace with hash 959017658, now seen corresponding path program 1 times [2020-10-13 09:45:41,034 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:45:41,034 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1324896830] [2020-10-13 09:45:41,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:45:41,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:45:41,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:45:41,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:45:41,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:45:41,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-13 09:45:41,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:45:41,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 802 [2020-10-13 09:45:41,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:45:41,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:45:41,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 158 [2020-10-13 09:45:41,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 09:45:41,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:45:41,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:45:41,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:45:41,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:45:41,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:45:41,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:45:41,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:45:41,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 09:45:41,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:45:41,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:45:41,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:45:41,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:45:41,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:45:41,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:45:42,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:45:42,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:45:42,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:45:42,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-13 09:45:42,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:45:42,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-13 09:45:42,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:45:42,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:45:42,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:45:42,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 143 [2020-10-13 09:45:42,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:45:42,347 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 23 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:45:42,352 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1324896830] [2020-10-13 09:45:42,353 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:45:42,353 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:45:42,353 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425233425] [2020-10-13 09:45:42,354 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:45:42,354 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:45:42,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:45:42,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:45:42,354 INFO L87 Difference]: Start difference. First operand 23416 states and 29506 transitions. Second operand 5 states. [2020-10-13 09:45:59,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:45:59,463 INFO L93 Difference]: Finished difference Result 58853 states and 75895 transitions. [2020-10-13 09:45:59,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:45:59,465 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 179 [2020-10-13 09:45:59,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:45:59,589 INFO L225 Difference]: With dead ends: 58853 [2020-10-13 09:45:59,589 INFO L226 Difference]: Without dead ends: 35443 [2020-10-13 09:45:59,646 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:45:59,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35443 states. [2020-10-13 09:46:00,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35443 to 35435. [2020-10-13 09:46:00,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35435 states. [2020-10-13 09:46:00,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35435 states to 35435 states and 43506 transitions. [2020-10-13 09:46:00,327 INFO L78 Accepts]: Start accepts. Automaton has 35435 states and 43506 transitions. Word has length 179 [2020-10-13 09:46:00,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:46:00,328 INFO L479 AbstractCegarLoop]: Abstraction has 35435 states and 43506 transitions. [2020-10-13 09:46:00,328 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:46:00,328 INFO L276 IsEmpty]: Start isEmpty. Operand 35435 states and 43506 transitions. [2020-10-13 09:46:00,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 532 [2020-10-13 09:46:00,396 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:46:00,396 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:46:00,397 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 09:46:00,397 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:46:00,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:46:00,397 INFO L82 PathProgramCache]: Analyzing trace with hash 1658669281, now seen corresponding path program 1 times [2020-10-13 09:46:00,398 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:46:00,398 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1253469156] [2020-10-13 09:46:00,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:46:00,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:46:00,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:46:02,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:46:04,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:46:04,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 543 [2020-10-13 09:46:04,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:46:04,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4081 [2020-10-13 09:46:04,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:46:04,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 09:46:04,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:46:04,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 505 [2020-10-13 09:46:04,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:46:04,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:46:04,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:46:04,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:46:04,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:46:04,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:46:04,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:46:04,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:46:04,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:46:04,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:46:04,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:46:04,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:46:04,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:46:04,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:46:04,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:46:04,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:46:05,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:46:05,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 503 [2020-10-13 09:46:05,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:46:05,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 981 [2020-10-13 09:46:05,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:46:05,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 09:46:05,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:46:05,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 503 [2020-10-13 09:46:05,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:46:05,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:46:05,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:46:06,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:46:06,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:46:06,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 215 [2020-10-13 09:46:06,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:46:06,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 294 [2020-10-13 09:46:06,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:46:06,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 09:46:06,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:46:06,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 215 [2020-10-13 09:46:06,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:46:07,051 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:46:07,052 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1253469156] [2020-10-13 09:46:07,052 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 09:46:07,052 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 09:46:07,052 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078261709] [2020-10-13 09:46:07,053 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 09:46:07,053 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:46:07,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 09:46:07,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 09:46:07,054 INFO L87 Difference]: Start difference. First operand 35435 states and 43506 transitions. Second operand 8 states. [2020-10-13 09:46:19,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:46:19,159 INFO L93 Difference]: Finished difference Result 75436 states and 93789 transitions. [2020-10-13 09:46:19,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 09:46:19,161 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 531 [2020-10-13 09:46:19,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:46:19,260 INFO L225 Difference]: With dead ends: 75436 [2020-10-13 09:46:19,260 INFO L226 Difference]: Without dead ends: 40007 [2020-10-13 09:46:19,310 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:46:19,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40007 states. [2020-10-13 09:46:20,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40007 to 39995. [2020-10-13 09:46:20,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39995 states. [2020-10-13 09:46:20,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39995 states to 39995 states and 49460 transitions. [2020-10-13 09:46:20,084 INFO L78 Accepts]: Start accepts. Automaton has 39995 states and 49460 transitions. Word has length 531 [2020-10-13 09:46:20,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:46:20,085 INFO L479 AbstractCegarLoop]: Abstraction has 39995 states and 49460 transitions. [2020-10-13 09:46:20,085 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 09:46:20,085 INFO L276 IsEmpty]: Start isEmpty. Operand 39995 states and 49460 transitions. [2020-10-13 09:46:20,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 601 [2020-10-13 09:46:20,143 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:46:20,144 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 09:46:20,144 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 09:46:20,145 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:46:20,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:46:20,145 INFO L82 PathProgramCache]: Analyzing trace with hash -628951066, now seen corresponding path program 1 times [2020-10-13 09:46:20,145 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:46:20,146 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1459409831] [2020-10-13 09:46:20,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:46:20,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:46:20,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:46:20,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:46:21,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:46:24,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:46:24,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 614 [2020-10-13 09:46:24,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:46:24,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4395 [2020-10-13 09:46:24,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:46:24,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 09:46:24,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:46:24,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-13 09:46:24,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:46:24,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:46:24,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:46:24,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:46:24,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:46:24,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:46:24,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:46:24,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:46:24,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:46:24,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:46:24,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:46:24,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:46:24,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:46:24,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:46:24,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:46:24,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:46:24,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:46:24,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 09:46:24,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:46:24,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-13 09:46:24,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:46:24,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:46:24,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:46:24,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-13 09:46:24,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:46:24,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-13 09:46:24,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:46:24,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:46:25,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:46:25,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 503 [2020-10-13 09:46:25,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:46:25,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 224 [2020-10-13 09:46:25,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:46:25,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:46:25,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 500 [2020-10-13 09:46:25,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:46:25,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:46:25,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:46:25,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:46:25,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:46:25,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:46:25,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 215 [2020-10-13 09:46:25,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:46:25,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-13 09:46:25,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:46:25,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:46:25,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:46:25,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:46:25,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:46:25,897 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 48 proven. 64 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-13 09:46:25,898 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1459409831] [2020-10-13 09:46:25,898 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:46:25,898 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:46:25,899 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088787016] [2020-10-13 09:46:25,901 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:46:25,901 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:46:25,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:46:25,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:46:25,902 INFO L87 Difference]: Start difference. First operand 39995 states and 49460 transitions. Second operand 7 states. [2020-10-13 09:46:36,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:46:36,438 INFO L93 Difference]: Finished difference Result 76764 states and 95893 transitions. [2020-10-13 09:46:36,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 09:46:36,441 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 600 [2020-10-13 09:46:36,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:46:36,527 INFO L225 Difference]: With dead ends: 76764 [2020-10-13 09:46:36,527 INFO L226 Difference]: Without dead ends: 37477 [2020-10-13 09:46:36,580 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 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 09:46:36,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37477 states. [2020-10-13 09:46:36,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37477 to 33918. [2020-10-13 09:46:36,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33918 states. [2020-10-13 09:46:37,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33918 states to 33918 states and 38776 transitions. [2020-10-13 09:46:37,031 INFO L78 Accepts]: Start accepts. Automaton has 33918 states and 38776 transitions. Word has length 600 [2020-10-13 09:46:37,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:46:37,032 INFO L479 AbstractCegarLoop]: Abstraction has 33918 states and 38776 transitions. [2020-10-13 09:46:37,032 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:46:37,032 INFO L276 IsEmpty]: Start isEmpty. Operand 33918 states and 38776 transitions. [2020-10-13 09:46:37,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 727 [2020-10-13 09:46:37,085 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:46:37,086 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:46:37,086 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 09:46:37,087 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:46:37,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:46:37,087 INFO L82 PathProgramCache]: Analyzing trace with hash 1009351522, now seen corresponding path program 1 times [2020-10-13 09:46:37,087 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:46:37,087 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1601779214] [2020-10-13 09:46:37,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:46:37,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:46:37,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:46:37,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:46:39,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:46:39,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:46:42,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:46:42,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 742 [2020-10-13 09:46:42,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:46:42,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5042 [2020-10-13 09:46:42,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:46:42,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:46:42,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 132 [2020-10-13 09:46:42,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-13 09:46:42,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:46:42,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:46:42,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:46:42,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:46:42,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:46:42,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:46:42,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:46:42,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 09:46:42,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:46:42,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:46:42,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:46:42,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:46:42,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:46:42,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:46:42,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:46:42,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:46:42,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:46:42,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-13 09:46:42,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:46:42,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-13 09:46:42,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:46:42,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:46:42,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:46:42,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-13 09:46:42,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:46:42,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-13 09:46:42,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:46:42,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:46:42,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:46:42,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-13 09:46:42,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:46:42,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-13 09:46:42,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:46:42,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:46:42,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:46:42,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-13 09:46:42,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:46:42,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2020-10-13 09:46:42,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:46:42,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:46:42,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:46:42,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 503 [2020-10-13 09:46:42,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:46:42,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-13 09:46:42,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:46:42,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:46:42,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 500 [2020-10-13 09:46:42,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:46:42,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:46:42,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:46:42,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:46:42,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:46:42,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:46:42,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 215 [2020-10-13 09:46:42,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:46:42,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-13 09:46:42,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:46:42,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:46:42,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:46:42,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:46:42,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:46:43,273 INFO L134 CoverageAnalysis]: Checked inductivity of 340 backedges. 146 proven. 72 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2020-10-13 09:46:43,273 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1601779214] [2020-10-13 09:46:43,273 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:46:43,274 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:46:43,274 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161752632] [2020-10-13 09:46:43,274 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:46:43,275 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:46:43,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:46:43,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:46:43,275 INFO L87 Difference]: Start difference. First operand 33918 states and 38776 transitions. Second operand 7 states. [2020-10-13 09:46:57,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:46:57,520 INFO L93 Difference]: Finished difference Result 70954 states and 81591 transitions. [2020-10-13 09:46:57,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 09:46:57,522 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 726 [2020-10-13 09:46:57,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:46:57,590 INFO L225 Difference]: With dead ends: 70954 [2020-10-13 09:46:57,591 INFO L226 Difference]: Without dead ends: 33962 [2020-10-13 09:46:57,645 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-13 09:46:57,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33962 states. [2020-10-13 09:46:58,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33962 to 33890. [2020-10-13 09:46:58,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33890 states. [2020-10-13 09:46:58,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33890 states to 33890 states and 36187 transitions. [2020-10-13 09:46:58,113 INFO L78 Accepts]: Start accepts. Automaton has 33890 states and 36187 transitions. Word has length 726 [2020-10-13 09:46:58,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:46:58,114 INFO L479 AbstractCegarLoop]: Abstraction has 33890 states and 36187 transitions. [2020-10-13 09:46:58,114 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:46:58,114 INFO L276 IsEmpty]: Start isEmpty. Operand 33890 states and 36187 transitions. [2020-10-13 09:46:58,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 760 [2020-10-13 09:46:58,143 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:46:58,143 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:46:58,144 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 09:46:58,144 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:46:58,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:46:58,145 INFO L82 PathProgramCache]: Analyzing trace with hash 1371990105, now seen corresponding path program 1 times [2020-10-13 09:46:58,145 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:46:58,146 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1639071894] [2020-10-13 09:46:58,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:46:58,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:46:58,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:46:58,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:47:00,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:47:01,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:47:03,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:47:03,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 775 [2020-10-13 09:47:03,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:47:03,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 09:47:03,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:47:03,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:47:03,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 132 [2020-10-13 09:47:03,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-13 09:47:03,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:47:03,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:47:03,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:47:03,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:47:03,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:47:03,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:47:03,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:47:03,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 09:47:03,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:47:03,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:47:03,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:47:03,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:47:03,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:47:03,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:47:03,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:47:03,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:47:03,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:47:03,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-13 09:47:03,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:47:03,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-13 09:47:03,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:47:03,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:47:03,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:47:03,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-13 09:47:03,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:47:03,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-13 09:47:03,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:47:03,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:47:03,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:47:03,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-13 09:47:03,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:47:03,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-13 09:47:03,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:47:03,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:47:03,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:47:03,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-13 09:47:03,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:47:03,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2020-10-13 09:47:03,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:47:03,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:47:03,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:47:03,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 503 [2020-10-13 09:47:03,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:47:03,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-10-13 09:47:03,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:47:03,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:47:03,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 500 [2020-10-13 09:47:03,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:47:03,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:47:03,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:47:04,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:47:04,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:47:04,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:47:04,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 215 [2020-10-13 09:47:04,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:47:04,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-13 09:47:04,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:47:04,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:47:04,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:47:04,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:47:04,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:47:04,541 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 179 proven. 105 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2020-10-13 09:47:04,542 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1639071894] [2020-10-13 09:47:04,542 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:47:04,542 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 09:47:04,542 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507645507] [2020-10-13 09:47:04,543 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 09:47:04,543 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:47:04,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 09:47:04,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 09:47:04,544 INFO L87 Difference]: Start difference. First operand 33890 states and 36187 transitions. Second operand 8 states. [2020-10-13 09:47:18,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:47:18,964 INFO L93 Difference]: Finished difference Result 84402 states and 91669 transitions. [2020-10-13 09:47:18,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 09:47:18,965 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 759 [2020-10-13 09:47:18,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:47:19,080 INFO L225 Difference]: With dead ends: 84402 [2020-10-13 09:47:19,080 INFO L226 Difference]: Without dead ends: 51220 [2020-10-13 09:47:19,139 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-13 09:47:19,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51220 states. [2020-10-13 09:47:19,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51220 to 50446. [2020-10-13 09:47:19,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50446 states. [2020-10-13 09:47:20,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50446 states to 50446 states and 54031 transitions. [2020-10-13 09:47:20,077 INFO L78 Accepts]: Start accepts. Automaton has 50446 states and 54031 transitions. Word has length 759 [2020-10-13 09:47:20,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:47:20,078 INFO L479 AbstractCegarLoop]: Abstraction has 50446 states and 54031 transitions. [2020-10-13 09:47:20,078 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 09:47:20,078 INFO L276 IsEmpty]: Start isEmpty. Operand 50446 states and 54031 transitions. [2020-10-13 09:47:20,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 945 [2020-10-13 09:47:20,114 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:47:20,116 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 09:47:20,116 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 09:47:20,117 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:47:20,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:47:20,117 INFO L82 PathProgramCache]: Analyzing trace with hash -73901906, now seen corresponding path program 1 times [2020-10-13 09:47:20,117 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:47:20,118 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1734247306] [2020-10-13 09:47:20,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:47:20,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:47:20,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:47:20,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:47:20,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:47:25,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:47:25,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 962 [2020-10-13 09:47:25,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:47:25,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 09:47:25,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:47:25,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:47:25,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 319 [2020-10-13 09:47:25,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-13 09:47:25,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:47:25,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:47:25,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:47:25,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:47:25,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:47:25,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:47:25,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:47:25,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:47:25,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:47:25,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:47:25,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:47:25,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:47:25,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:47:25,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:47:25,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:47:25,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:47:25,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:47:25,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-13 09:47:25,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:47:25,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 09:47:25,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:47:25,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:47:25,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:47:25,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:47:25,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:47:25,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-13 09:47:25,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:47:25,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:47:25,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:47:25,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-10-13 09:47:25,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:47:25,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-13 09:47:25,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:47:25,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:47:25,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:47:25,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-13 09:47:25,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:47:25,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2020-10-13 09:47:25,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:47:25,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:47:25,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:47:25,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-13 09:47:25,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:47:25,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-13 09:47:25,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:47:25,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:47:25,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:47:25,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-13 09:47:25,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:47:25,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2020-10-13 09:47:25,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:47:25,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:47:25,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:47:25,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 503 [2020-10-13 09:47:25,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:47:25,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-13 09:47:25,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:47:25,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:47:25,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 500 [2020-10-13 09:47:25,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:47:25,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:47:25,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:47:26,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:47:26,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:47:26,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:47:26,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 215 [2020-10-13 09:47:26,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:47:26,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-13 09:47:26,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:47:26,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:47:26,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:47:26,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:47:26,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:47:26,554 INFO L134 CoverageAnalysis]: Checked inductivity of 843 backedges. 315 proven. 105 refuted. 0 times theorem prover too weak. 423 trivial. 0 not checked. [2020-10-13 09:47:26,555 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1734247306] [2020-10-13 09:47:26,555 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:47:26,555 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:47:26,555 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429046875] [2020-10-13 09:47:26,556 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:47:26,556 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:47:26,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:47:26,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:47:26,556 INFO L87 Difference]: Start difference. First operand 50446 states and 54031 transitions. Second operand 7 states. [2020-10-13 09:47:35,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:47:35,641 INFO L93 Difference]: Finished difference Result 99549 states and 106744 transitions. [2020-10-13 09:47:35,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 09:47:35,642 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 944 [2020-10-13 09:47:35,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:47:35,728 INFO L225 Difference]: With dead ends: 99549 [2020-10-13 09:47:35,728 INFO L226 Difference]: Without dead ends: 50521 [2020-10-13 09:47:35,773 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:47:35,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50521 states. [2020-10-13 09:47:36,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50521 to 50485. [2020-10-13 09:47:36,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50485 states. [2020-10-13 09:47:36,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50485 states to 50485 states and 54067 transitions. [2020-10-13 09:47:36,257 INFO L78 Accepts]: Start accepts. Automaton has 50485 states and 54067 transitions. Word has length 944 [2020-10-13 09:47:36,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:47:36,258 INFO L479 AbstractCegarLoop]: Abstraction has 50485 states and 54067 transitions. [2020-10-13 09:47:36,258 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:47:36,258 INFO L276 IsEmpty]: Start isEmpty. Operand 50485 states and 54067 transitions. [2020-10-13 09:47:36,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 976 [2020-10-13 09:47:36,294 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:47:36,295 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 09:47:36,295 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 09:47:36,295 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:47:36,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:47:36,296 INFO L82 PathProgramCache]: Analyzing trace with hash 895196397, now seen corresponding path program 1 times [2020-10-13 09:47:36,296 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:47:36,296 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [768581452] [2020-10-13 09:47:36,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:47:36,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:47:36,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:47:36,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:47:37,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking...