/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/Problem16_label27.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 09:18:35,303 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 09:18:35,308 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 09:18:35,350 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 09:18:35,351 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 09:18:35,359 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 09:18:35,360 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 09:18:35,362 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 09:18:35,366 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 09:18:35,369 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 09:18:35,370 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 09:18:35,372 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 09:18:35,373 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 09:18:35,375 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 09:18:35,378 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 09:18:35,380 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 09:18:35,382 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 09:18:35,383 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 09:18:35,384 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 09:18:35,392 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 09:18:35,395 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 09:18:35,396 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 09:18:35,397 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 09:18:35,397 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 09:18:35,408 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 09:18:35,408 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 09:18:35,409 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 09:18:35,411 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 09:18:35,412 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 09:18:35,413 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 09:18:35,413 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 09:18:35,414 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 09:18:35,414 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 09:18:35,418 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 09:18:35,419 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 09:18:35,419 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 09:18:35,420 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 09:18:35,420 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 09:18:35,421 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 09:18:35,422 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 09:18:35,423 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 09:18:35,424 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 09:18:35,467 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 09:18:35,467 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 09:18:35,470 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 09:18:35,470 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 09:18:35,470 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 09:18:35,470 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 09:18:35,471 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 09:18:35,471 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 09:18:35,471 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 09:18:35,471 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 09:18:35,472 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 09:18:35,472 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 09:18:35,473 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 09:18:35,473 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 09:18:35,473 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 09:18:35,473 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 09:18:35,474 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 09:18:35,474 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 09:18:35,474 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 09:18:35,474 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 09:18:35,475 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 09:18:35,475 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 09:18:35,475 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 09:18:35,475 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 09:18:35,475 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 09:18:35,475 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 09:18:35,476 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 09:18:35,476 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 09:18:35,476 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 09:18:35,476 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 09:18:35,797 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 09:18:35,812 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 09:18:35,824 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 09:18:35,826 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 09:18:35,826 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 09:18:35,827 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label27.c [2020-10-13 09:18:35,893 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6bd27f0ef/e5e6a9b847b24238936fc18d8f97df10/FLAGd4db07f4c [2020-10-13 09:18:36,611 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 09:18:36,612 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem16_label27.c [2020-10-13 09:18:36,629 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6bd27f0ef/e5e6a9b847b24238936fc18d8f97df10/FLAGd4db07f4c [2020-10-13 09:18:36,744 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6bd27f0ef/e5e6a9b847b24238936fc18d8f97df10 [2020-10-13 09:18:36,755 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 09:18:36,757 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 09:18:36,762 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 09:18:36,762 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 09:18:36,766 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 09:18:36,767 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:18:36" (1/1) ... [2020-10-13 09:18:36,771 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1043d88d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:18:36, skipping insertion in model container [2020-10-13 09:18:36,772 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:18:36" (1/1) ... [2020-10-13 09:18:36,781 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 09:18:36,875 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 09:18:37,941 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 09:18:37,951 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 09:18:38,277 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 09:18:38,298 INFO L208 MainTranslator]: Completed translation [2020-10-13 09:18:38,300 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:18:38 WrapperNode [2020-10-13 09:18:38,300 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 09:18:38,301 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 09:18:38,301 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 09:18:38,301 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 09:18:38,317 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:18:38" (1/1) ... [2020-10-13 09:18:38,319 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:18:38" (1/1) ... [2020-10-13 09:18:38,368 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:18:38" (1/1) ... [2020-10-13 09:18:38,369 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:18:38" (1/1) ... [2020-10-13 09:18:38,432 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:18:38" (1/1) ... [2020-10-13 09:18:38,449 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:18:38" (1/1) ... [2020-10-13 09:18:38,465 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:18:38" (1/1) ... [2020-10-13 09:18:38,484 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 09:18:38,484 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 09:18:38,484 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 09:18:38,485 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 09:18:38,486 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:18:38" (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 09:18:38,545 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 09:18:38,545 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 09:18:38,545 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 09:18:38,545 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 09:18:38,545 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 09:18:38,546 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 09:18:38,546 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 09:18:38,546 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 09:18:38,546 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 09:18:38,546 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 09:18:38,546 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 09:18:38,547 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 09:18:38,547 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 09:18:40,899 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 09:18:40,899 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 09:18:40,907 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:18:40 BoogieIcfgContainer [2020-10-13 09:18:40,908 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 09:18:40,909 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 09:18:40,909 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 09:18:40,913 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 09:18:40,913 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:18:36" (1/3) ... [2020-10-13 09:18:40,914 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ec7215f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:18:40, skipping insertion in model container [2020-10-13 09:18:40,914 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:18:38" (2/3) ... [2020-10-13 09:18:40,915 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ec7215f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:18:40, skipping insertion in model container [2020-10-13 09:18:40,915 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:18:40" (3/3) ... [2020-10-13 09:18:40,917 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem16_label27.c [2020-10-13 09:18:40,928 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 09:18:40,937 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 09:18:40,953 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 09:18:40,981 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 09:18:40,981 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 09:18:40,982 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 09:18:40,982 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 09:18:40,982 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 09:18:40,982 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 09:18:40,982 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 09:18:40,982 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 09:18:41,010 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states. [2020-10-13 09:18:41,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-13 09:18:41,017 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:18:41,018 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:18:41,018 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:18:41,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:18:41,025 INFO L82 PathProgramCache]: Analyzing trace with hash 1475741965, now seen corresponding path program 1 times [2020-10-13 09:18:41,035 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:18:41,035 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [957227264] [2020-10-13 09:18:41,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:18:41,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:41,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:41,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:41,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 09:18:41,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:18:41,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 296 [2020-10-13 09:18:41,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:41,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 09:18:41,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:18:41,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 09:18:41,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 09:18:41,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:18:41,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:41,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:41,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:41,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:18:41,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:18:41,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 09:18:41,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:41,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:18:41,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:18:41,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:18:41,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:41,638 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 09:18:41,639 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [957227264] [2020-10-13 09:18:41,641 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 09:18:41,642 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 09:18:41,643 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278595772] [2020-10-13 09:18:41,648 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:18:41,649 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:18:41,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:18:41,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:18:41,667 INFO L87 Difference]: Start difference. First operand 409 states. Second operand 5 states. [2020-10-13 09:18:46,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:18:46,809 INFO L93 Difference]: Finished difference Result 1515 states and 2848 transitions. [2020-10-13 09:18:46,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 09:18:46,811 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-10-13 09:18:46,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:18:46,853 INFO L225 Difference]: With dead ends: 1515 [2020-10-13 09:18:46,853 INFO L226 Difference]: Without dead ends: 1038 [2020-10-13 09:18:46,866 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:18:46,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1038 states. [2020-10-13 09:18:46,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1038 to 1031. [2020-10-13 09:18:46,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1031 states. [2020-10-13 09:18:46,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1031 states to 1031 states and 1642 transitions. [2020-10-13 09:18:46,998 INFO L78 Accepts]: Start accepts. Automaton has 1031 states and 1642 transitions. Word has length 18 [2020-10-13 09:18:46,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:18:46,999 INFO L479 AbstractCegarLoop]: Abstraction has 1031 states and 1642 transitions. [2020-10-13 09:18:46,999 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:18:46,999 INFO L276 IsEmpty]: Start isEmpty. Operand 1031 states and 1642 transitions. [2020-10-13 09:18:47,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-10-13 09:18:47,009 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:18:47,009 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:18:47,010 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 09:18:47,010 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:18:47,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:18:47,011 INFO L82 PathProgramCache]: Analyzing trace with hash 208259533, now seen corresponding path program 1 times [2020-10-13 09:18:47,011 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:18:47,011 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [188795675] [2020-10-13 09:18:47,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:18:47,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:47,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:47,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:48,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:48,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:49,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:49,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 212 [2020-10-13 09:18:49,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:18:49,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2498 [2020-10-13 09:18:49,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:49,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:18:49,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-13 09:18:49,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-13 09:18:49,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 09:18:49,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:18:49,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:49,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:49,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:49,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:18:49,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:18:49,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 09:18:49,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:49,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:18:49,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:18:49,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:18:49,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:49,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:18:49,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:49,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:49,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:49,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 09:18:49,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:18:49,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-13 09:18:49,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:49,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:18:49,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:18:49,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-13 09:18:49,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-10-13 09:18:49,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-13 09:18:49,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:49,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:50,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:50,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:50,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-13 09:18:50,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:18:50,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 236 [2020-10-13 09:18:50,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:50,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:18:50,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:18:50,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-13 09:18:50,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:50,374 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 94 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 09:18:50,375 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [188795675] [2020-10-13 09:18:50,376 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:18:50,376 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:18:50,376 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926565814] [2020-10-13 09:18:50,379 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:18:50,379 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:18:50,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:18:50,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:18:50,380 INFO L87 Difference]: Start difference. First operand 1031 states and 1642 transitions. Second operand 7 states. [2020-10-13 09:18:53,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:18:53,776 INFO L93 Difference]: Finished difference Result 2186 states and 3509 transitions. [2020-10-13 09:18:53,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 09:18:53,777 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 200 [2020-10-13 09:18:53,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:18:53,790 INFO L225 Difference]: With dead ends: 2186 [2020-10-13 09:18:53,791 INFO L226 Difference]: Without dead ends: 1084 [2020-10-13 09:18:53,796 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:18:53,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1084 states. [2020-10-13 09:18:53,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1084 to 1041. [2020-10-13 09:18:53,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1041 states. [2020-10-13 09:18:53,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1041 states to 1041 states and 1469 transitions. [2020-10-13 09:18:53,870 INFO L78 Accepts]: Start accepts. Automaton has 1041 states and 1469 transitions. Word has length 200 [2020-10-13 09:18:53,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:18:53,873 INFO L479 AbstractCegarLoop]: Abstraction has 1041 states and 1469 transitions. [2020-10-13 09:18:53,873 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:18:53,873 INFO L276 IsEmpty]: Start isEmpty. Operand 1041 states and 1469 transitions. [2020-10-13 09:18:53,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2020-10-13 09:18:53,888 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:18:53,888 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:18:53,888 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 09:18:53,889 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:18:53,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:18:53,895 INFO L82 PathProgramCache]: Analyzing trace with hash 224097793, now seen corresponding path program 1 times [2020-10-13 09:18:53,896 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:18:53,896 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [665673530] [2020-10-13 09:18:53,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:18:53,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:53,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:54,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:55,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:55,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:56,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:56,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 222 [2020-10-13 09:18:56,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:18:56,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2389 [2020-10-13 09:18:56,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:56,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:18:56,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-10-13 09:18:56,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-13 09:18:56,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 09:18:56,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:18:56,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:56,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:56,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:56,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:18:56,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:18:56,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:18:56,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:56,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:18:56,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:18:56,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:18:56,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:56,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:18:56,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:56,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:56,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:56,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-13 09:18:56,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:18:56,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-13 09:18:56,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:56,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:18:56,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:18:56,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-13 09:18:56,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:56,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-13 09:18:56,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:56,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:56,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:56,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:56,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-13 09:18:56,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:18:56,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 242 [2020-10-13 09:18:56,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:56,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:18:56,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:18:56,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-13 09:18:56,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:57,515 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 104 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 09:18:57,516 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [665673530] [2020-10-13 09:18:57,516 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:18:57,516 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:18:57,517 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155669259] [2020-10-13 09:18:57,517 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:18:57,518 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:18:57,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:18:57,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:18:57,518 INFO L87 Difference]: Start difference. First operand 1041 states and 1469 transitions. Second operand 7 states. [2020-10-13 09:19:00,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:19:00,793 INFO L93 Difference]: Finished difference Result 2245 states and 3171 transitions. [2020-10-13 09:19:00,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 09:19:00,797 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 210 [2020-10-13 09:19:00,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:19:00,804 INFO L225 Difference]: With dead ends: 2245 [2020-10-13 09:19:00,804 INFO L226 Difference]: Without dead ends: 1130 [2020-10-13 09:19:00,808 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:19:00,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1130 states. [2020-10-13 09:19:00,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1130 to 1041. [2020-10-13 09:19:00,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1041 states. [2020-10-13 09:19:00,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1041 states to 1041 states and 1412 transitions. [2020-10-13 09:19:00,842 INFO L78 Accepts]: Start accepts. Automaton has 1041 states and 1412 transitions. Word has length 210 [2020-10-13 09:19:00,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:19:00,843 INFO L479 AbstractCegarLoop]: Abstraction has 1041 states and 1412 transitions. [2020-10-13 09:19:00,843 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:19:00,843 INFO L276 IsEmpty]: Start isEmpty. Operand 1041 states and 1412 transitions. [2020-10-13 09:19:00,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2020-10-13 09:19:00,846 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:19:00,847 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 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 09:19:00,847 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 09:19:00,847 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:19:00,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:19:00,847 INFO L82 PathProgramCache]: Analyzing trace with hash 1752136009, now seen corresponding path program 1 times [2020-10-13 09:19:00,848 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:19:00,848 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [600632982] [2020-10-13 09:19:00,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:19:00,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:00,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:00,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:01,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:02,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:02,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:02,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-13 09:19:02,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:19:02,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1881 [2020-10-13 09:19:02,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:02,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:19:02,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 99 [2020-10-13 09:19:02,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-13 09:19:02,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:02,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:19:02,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:02,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:02,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:02,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:19:02,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:02,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:19:02,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:02,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:19:02,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:19:02,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:19:02,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:02,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:19:02,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:02,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:02,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:02,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-13 09:19:02,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:02,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-13 09:19:02,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:02,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:19:02,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:19:02,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-13 09:19:02,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:02,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-13 09:19:02,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:02,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:03,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:03,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:03,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-13 09:19:03,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:19:03,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 302 [2020-10-13 09:19:03,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:03,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:19:03,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:19:03,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-13 09:19:03,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:19:03,541 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 108 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 09:19:03,542 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [600632982] [2020-10-13 09:19:03,542 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:19:03,542 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 09:19:03,543 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806190038] [2020-10-13 09:19:03,543 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 09:19:03,544 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:19:03,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 09:19:03,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:19:03,545 INFO L87 Difference]: Start difference. First operand 1041 states and 1412 transitions. Second operand 6 states. [2020-10-13 09:19:05,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:19:05,966 INFO L93 Difference]: Finished difference Result 2211 states and 2974 transitions. [2020-10-13 09:19:05,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 09:19:05,967 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 214 [2020-10-13 09:19:05,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:19:05,974 INFO L225 Difference]: With dead ends: 2211 [2020-10-13 09:19:05,974 INFO L226 Difference]: Without dead ends: 1107 [2020-10-13 09:19:05,977 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-13 09:19:05,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1107 states. [2020-10-13 09:19:06,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1107 to 1038. [2020-10-13 09:19:06,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1038 states. [2020-10-13 09:19:06,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1038 states to 1038 states and 1305 transitions. [2020-10-13 09:19:06,008 INFO L78 Accepts]: Start accepts. Automaton has 1038 states and 1305 transitions. Word has length 214 [2020-10-13 09:19:06,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:19:06,009 INFO L479 AbstractCegarLoop]: Abstraction has 1038 states and 1305 transitions. [2020-10-13 09:19:06,009 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 09:19:06,009 INFO L276 IsEmpty]: Start isEmpty. Operand 1038 states and 1305 transitions. [2020-10-13 09:19:06,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2020-10-13 09:19:06,012 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:19:06,012 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:19:06,013 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 09:19:06,013 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:19:06,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:19:06,013 INFO L82 PathProgramCache]: Analyzing trace with hash 269408085, now seen corresponding path program 1 times [2020-10-13 09:19:06,013 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:19:06,014 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [976531245] [2020-10-13 09:19:06,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:19:06,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:06,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:06,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:07,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:08,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:09,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:09,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-13 09:19:09,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:19:09,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3071 [2020-10-13 09:19:09,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:09,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 09:19:09,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 121 [2020-10-13 09:19:09,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-13 09:19:09,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-13 09:19:09,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:19:09,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:09,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:09,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:09,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:19:09,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:09,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:19:09,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:09,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:19:09,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:19:09,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:19:09,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:09,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:19:09,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:09,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:09,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:09,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-13 09:19:09,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:09,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-13 09:19:09,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:09,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:19:09,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:19:09,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-13 09:19:09,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:09,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-13 09:19:09,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:09,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:09,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:09,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:09,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-13 09:19:09,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:19:09,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 422 [2020-10-13 09:19:09,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:09,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 09:19:09,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:19:09,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-13 09:19:09,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:10,232 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 126 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 09:19:10,233 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [976531245] [2020-10-13 09:19:10,233 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:19:10,233 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 09:19:10,233 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087265074] [2020-10-13 09:19:10,234 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 09:19:10,234 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:19:10,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 09:19:10,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-13 09:19:10,235 INFO L87 Difference]: Start difference. First operand 1038 states and 1305 transitions. Second operand 10 states. [2020-10-13 09:19:12,003 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 47 [2020-10-13 09:19:14,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:19:14,073 INFO L93 Difference]: Finished difference Result 2316 states and 2904 transitions. [2020-10-13 09:19:14,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-13 09:19:14,077 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 236 [2020-10-13 09:19:14,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:19:14,085 INFO L225 Difference]: With dead ends: 2316 [2020-10-13 09:19:14,086 INFO L226 Difference]: Without dead ends: 1193 [2020-10-13 09:19:14,090 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=127, Invalid=335, Unknown=0, NotChecked=0, Total=462 [2020-10-13 09:19:14,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1193 states. [2020-10-13 09:19:14,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1193 to 1038. [2020-10-13 09:19:14,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1038 states. [2020-10-13 09:19:14,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1038 states to 1038 states and 1269 transitions. [2020-10-13 09:19:14,122 INFO L78 Accepts]: Start accepts. Automaton has 1038 states and 1269 transitions. Word has length 236 [2020-10-13 09:19:14,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:19:14,123 INFO L479 AbstractCegarLoop]: Abstraction has 1038 states and 1269 transitions. [2020-10-13 09:19:14,123 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 09:19:14,123 INFO L276 IsEmpty]: Start isEmpty. Operand 1038 states and 1269 transitions. [2020-10-13 09:19:14,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2020-10-13 09:19:14,126 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:19:14,127 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:19:14,127 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 09:19:14,127 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:19:14,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:19:14,127 INFO L82 PathProgramCache]: Analyzing trace with hash 1508272797, now seen corresponding path program 1 times [2020-10-13 09:19:14,128 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:19:14,128 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1553820495] [2020-10-13 09:19:14,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:19:14,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:14,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:14,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:15,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:15,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 252 [2020-10-13 09:19:15,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:19:15,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1071 [2020-10-13 09:19:15,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:15,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:19:15,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 125 [2020-10-13 09:19:15,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-13 09:19:15,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:15,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:19:15,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:15,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:15,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:15,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:19:15,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:15,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:19:15,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:15,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:19:15,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:19:15,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:19:15,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:15,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:19:15,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:15,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:15,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:15,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-13 09:19:15,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:15,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-13 09:19:15,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:15,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:19:15,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:19:15,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-13 09:19:15,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:19:15,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-13 09:19:15,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:15,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:15,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:15,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-13 09:19:15,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:15,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 175 [2020-10-13 09:19:15,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:15,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:19:15,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:19:15,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-13 09:19:15,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:19:15,849 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 126 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 09:19:15,850 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1553820495] [2020-10-13 09:19:15,851 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:19:15,852 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:19:15,852 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508204411] [2020-10-13 09:19:15,853 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:19:15,853 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:19:15,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:19:15,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:19:15,854 INFO L87 Difference]: Start difference. First operand 1038 states and 1269 transitions. Second operand 7 states. [2020-10-13 09:19:20,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:19:20,327 INFO L93 Difference]: Finished difference Result 4176 states and 5281 transitions. [2020-10-13 09:19:20,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 09:19:20,327 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 240 [2020-10-13 09:19:20,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:19:20,344 INFO L225 Difference]: With dead ends: 4176 [2020-10-13 09:19:20,344 INFO L226 Difference]: Without dead ends: 3144 [2020-10-13 09:19:20,349 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:19:20,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3144 states. [2020-10-13 09:19:20,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3144 to 3134. [2020-10-13 09:19:20,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3134 states. [2020-10-13 09:19:20,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3134 states to 3134 states and 3634 transitions. [2020-10-13 09:19:20,441 INFO L78 Accepts]: Start accepts. Automaton has 3134 states and 3634 transitions. Word has length 240 [2020-10-13 09:19:20,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:19:20,442 INFO L479 AbstractCegarLoop]: Abstraction has 3134 states and 3634 transitions. [2020-10-13 09:19:20,442 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:19:20,442 INFO L276 IsEmpty]: Start isEmpty. Operand 3134 states and 3634 transitions. [2020-10-13 09:19:20,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2020-10-13 09:19:20,448 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:19:20,449 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:19:20,449 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 09:19:20,449 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:19:20,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:19:20,450 INFO L82 PathProgramCache]: Analyzing trace with hash 803357610, now seen corresponding path program 1 times [2020-10-13 09:19:20,450 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:19:20,450 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1298248755] [2020-10-13 09:19:20,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:19:20,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:20,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:20,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:21,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:21,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 281 [2020-10-13 09:19:21,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:19:21,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1086 [2020-10-13 09:19:21,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:21,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:19:21,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 154 [2020-10-13 09:19:21,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-13 09:19:21,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:21,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:19:21,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:21,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:21,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:21,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:19:21,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:21,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:19:21,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:21,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:19:21,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:19:21,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:19:21,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 09:19:21,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:19:21,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:21,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:21,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:21,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-13 09:19:21,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:21,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-13 09:19:21,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:21,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:19:21,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:19:21,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-10-13 09:19:21,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:19:21,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-10-13 09:19:21,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:21,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:22,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:22,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-13 09:19:22,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:22,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-10-13 09:19:22,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:22,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:19:22,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:19:22,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-13 09:19:22,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:22,356 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 126 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 09:19:22,357 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1298248755] [2020-10-13 09:19:22,357 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:19:22,358 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:19:22,359 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682808276] [2020-10-13 09:19:22,360 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:19:22,360 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:19:22,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:19:22,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:19:22,362 INFO L87 Difference]: Start difference. First operand 3134 states and 3634 transitions. Second operand 7 states. [2020-10-13 09:19:26,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:19:26,569 INFO L93 Difference]: Finished difference Result 7711 states and 9365 transitions. [2020-10-13 09:19:26,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 09:19:26,570 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 269 [2020-10-13 09:19:26,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:19:26,592 INFO L225 Difference]: With dead ends: 7711 [2020-10-13 09:19:26,593 INFO L226 Difference]: Without dead ends: 4587 [2020-10-13 09:19:26,604 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-13 09:19:26,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4587 states. [2020-10-13 09:19:26,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4587 to 4541. [2020-10-13 09:19:26,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4541 states. [2020-10-13 09:19:26,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4541 states to 4541 states and 5249 transitions. [2020-10-13 09:19:26,725 INFO L78 Accepts]: Start accepts. Automaton has 4541 states and 5249 transitions. Word has length 269 [2020-10-13 09:19:26,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:19:26,726 INFO L479 AbstractCegarLoop]: Abstraction has 4541 states and 5249 transitions. [2020-10-13 09:19:26,726 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:19:26,726 INFO L276 IsEmpty]: Start isEmpty. Operand 4541 states and 5249 transitions. [2020-10-13 09:19:26,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2020-10-13 09:19:26,735 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:19:26,736 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:19:26,736 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 09:19:26,736 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:19:26,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:19:26,736 INFO L82 PathProgramCache]: Analyzing trace with hash -835769283, now seen corresponding path program 1 times [2020-10-13 09:19:26,737 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:19:26,737 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1026446966] [2020-10-13 09:19:26,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:19:26,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:26,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:27,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:28,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:28,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 332 [2020-10-13 09:19:28,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:19:28,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1545 [2020-10-13 09:19:28,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:28,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:19:28,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 205 [2020-10-13 09:19:28,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-13 09:19:28,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 09:19:28,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:19:28,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:28,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:28,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:28,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:19:28,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:28,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:19:28,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:28,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:19:28,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:19:28,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:19:28,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:19:28,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:19:28,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:28,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:28,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:28,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-13 09:19:28,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:28,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 200 [2020-10-13 09:19:28,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:28,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:19:28,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:19:28,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 190 [2020-10-13 09:19:28,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:28,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2020-10-13 09:19:28,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:28,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:29,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:29,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-13 09:19:29,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:29,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-13 09:19:29,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:29,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:19:29,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:19:29,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-13 09:19:29,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:29,161 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 126 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 09:19:29,162 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1026446966] [2020-10-13 09:19:29,162 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:19:29,162 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:19:29,162 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318971077] [2020-10-13 09:19:29,163 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:19:29,163 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:19:29,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:19:29,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:19:29,164 INFO L87 Difference]: Start difference. First operand 4541 states and 5249 transitions. Second operand 7 states. [2020-10-13 09:19:33,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:19:33,425 INFO L93 Difference]: Finished difference Result 9837 states and 11620 transitions. [2020-10-13 09:19:33,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 09:19:33,426 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 320 [2020-10-13 09:19:33,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:19:33,454 INFO L225 Difference]: With dead ends: 9837 [2020-10-13 09:19:33,454 INFO L226 Difference]: Without dead ends: 5644 [2020-10-13 09:19:33,467 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:19:33,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5644 states. [2020-10-13 09:19:33,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5644 to 5602. [2020-10-13 09:19:33,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5602 states. [2020-10-13 09:19:33,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5602 states to 5602 states and 6421 transitions. [2020-10-13 09:19:33,622 INFO L78 Accepts]: Start accepts. Automaton has 5602 states and 6421 transitions. Word has length 320 [2020-10-13 09:19:33,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:19:33,623 INFO L479 AbstractCegarLoop]: Abstraction has 5602 states and 6421 transitions. [2020-10-13 09:19:33,624 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:19:33,624 INFO L276 IsEmpty]: Start isEmpty. Operand 5602 states and 6421 transitions. [2020-10-13 09:19:33,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2020-10-13 09:19:33,637 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:19:33,637 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:19:33,638 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 09:19:33,638 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:19:33,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:19:33,638 INFO L82 PathProgramCache]: Analyzing trace with hash -439319276, now seen corresponding path program 1 times [2020-10-13 09:19:33,639 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:19:33,639 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [357133459] [2020-10-13 09:19:33,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:19:33,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:33,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:34,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:34,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:34,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:37,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:37,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 335 [2020-10-13 09:19:37,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:19:37,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4158 [2020-10-13 09:19:37,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:37,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:19:37,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 317 [2020-10-13 09:19:37,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 09:19:37,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:19:37,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:19:37,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:37,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:37,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:37,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:19:37,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:37,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:19:37,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:37,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:19:37,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:19:37,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:19:37,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:37,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:19:37,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:37,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:38,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:38,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-13 09:19:38,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:38,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-13 09:19:38,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:38,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:19:38,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:19:38,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:19:38,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:38,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2020-10-13 09:19:38,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:38,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:38,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:38,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 09:19:38,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:38,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-13 09:19:38,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:38,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:19:38,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:19:38,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-13 09:19:38,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:38,312 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 23 proven. 2 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2020-10-13 09:19:38,312 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [357133459] [2020-10-13 09:19:38,312 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:19:38,313 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:19:38,313 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978637994] [2020-10-13 09:19:38,313 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:19:38,314 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:19:38,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:19:38,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:19:38,314 INFO L87 Difference]: Start difference. First operand 5602 states and 6421 transitions. Second operand 5 states. [2020-10-13 09:19:40,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:19:40,783 INFO L93 Difference]: Finished difference Result 13269 states and 15451 transitions. [2020-10-13 09:19:40,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:19:40,784 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 323 [2020-10-13 09:19:40,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:19:40,840 INFO L225 Difference]: With dead ends: 13269 [2020-10-13 09:19:40,840 INFO L226 Difference]: Without dead ends: 8015 [2020-10-13 09:19:40,856 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 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 09:19:40,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8015 states. [2020-10-13 09:19:41,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8015 to 6990. [2020-10-13 09:19:41,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6990 states. [2020-10-13 09:19:41,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6990 states to 6990 states and 8164 transitions. [2020-10-13 09:19:41,059 INFO L78 Accepts]: Start accepts. Automaton has 6990 states and 8164 transitions. Word has length 323 [2020-10-13 09:19:41,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:19:41,060 INFO L479 AbstractCegarLoop]: Abstraction has 6990 states and 8164 transitions. [2020-10-13 09:19:41,060 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:19:41,060 INFO L276 IsEmpty]: Start isEmpty. Operand 6990 states and 8164 transitions. [2020-10-13 09:19:41,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2020-10-13 09:19:41,082 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:19:41,083 INFO L422 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 09:19:41,083 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 09:19:41,083 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:19:41,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:19:41,084 INFO L82 PathProgramCache]: Analyzing trace with hash 1480169006, now seen corresponding path program 1 times [2020-10-13 09:19:41,084 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:19:41,084 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1639467981] [2020-10-13 09:19:41,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:19:41,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:41,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:41,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:43,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:45,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:45,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 444 [2020-10-13 09:19:45,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:19:45,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4267 [2020-10-13 09:19:45,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:45,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:19:45,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 317 [2020-10-13 09:19:45,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-13 09:19:45,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:45,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:19:45,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:45,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:45,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:45,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:19:45,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:45,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:19:45,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:45,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:19:45,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:19:45,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:19:45,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:45,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:19:45,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:45,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:45,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:45,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-13 09:19:45,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:45,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-13 09:19:45,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:45,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:19:45,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:19:45,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:19:45,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:45,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2020-10-13 09:19:45,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:45,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:45,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:45,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 09:19:45,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:45,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-13 09:19:45,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:45,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:19:45,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:19:45,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-13 09:19:45,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:45,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2020-10-13 09:19:45,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:45,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:45,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:45,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-13 09:19:45,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:45,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-13 09:19:45,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:45,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:19:45,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:19:45,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-13 09:19:45,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:45,895 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 246 proven. 2 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2020-10-13 09:19:45,896 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1639467981] [2020-10-13 09:19:45,896 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:19:45,896 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:19:45,896 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272013130] [2020-10-13 09:19:45,897 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:19:45,898 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:19:45,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:19:45,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:19:45,898 INFO L87 Difference]: Start difference. First operand 6990 states and 8164 transitions. Second operand 7 states. [2020-10-13 09:19:50,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:19:50,234 INFO L93 Difference]: Finished difference Result 15016 states and 17443 transitions. [2020-10-13 09:19:50,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 09:19:50,235 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 430 [2020-10-13 09:19:50,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:19:50,261 INFO L225 Difference]: With dead ends: 15016 [2020-10-13 09:19:50,262 INFO L226 Difference]: Without dead ends: 8374 [2020-10-13 09:19:50,280 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:19:50,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8374 states. [2020-10-13 09:19:50,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8374 to 8367. [2020-10-13 09:19:50,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8367 states. [2020-10-13 09:19:50,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8367 states to 8367 states and 9396 transitions. [2020-10-13 09:19:50,465 INFO L78 Accepts]: Start accepts. Automaton has 8367 states and 9396 transitions. Word has length 430 [2020-10-13 09:19:50,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:19:50,466 INFO L479 AbstractCegarLoop]: Abstraction has 8367 states and 9396 transitions. [2020-10-13 09:19:50,466 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:19:50,466 INFO L276 IsEmpty]: Start isEmpty. Operand 8367 states and 9396 transitions. [2020-10-13 09:19:50,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 448 [2020-10-13 09:19:50,492 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:19:50,492 INFO L422 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:19:50,493 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 09:19:50,493 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:19:50,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:19:50,493 INFO L82 PathProgramCache]: Analyzing trace with hash -448123769, now seen corresponding path program 1 times [2020-10-13 09:19:50,494 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:19:50,494 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [98099948] [2020-10-13 09:19:50,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:19:50,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:50,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:50,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:51,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:52,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:55,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:55,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 461 [2020-10-13 09:19:55,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:19:55,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-13 09:19:55,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:55,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:19:55,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 443 [2020-10-13 09:19:55,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 09:19:55,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:55,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:19:55,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:55,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:55,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:55,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:19:55,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:55,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:19:55,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:55,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:19:55,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:19:55,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:19:55,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:55,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:19:55,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:55,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:55,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:55,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-13 09:19:55,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:55,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-13 09:19:55,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:55,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:19:55,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:19:55,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:19:55,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:55,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2020-10-13 09:19:55,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:55,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:55,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:55,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 09:19:55,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:55,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 09:19:55,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:55,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:19:55,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:19:55,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:19:55,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:55,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2020-10-13 09:19:55,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:55,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:55,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:55,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-13 09:19:55,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:55,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-13 09:19:55,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:55,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:19:55,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:19:55,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-13 09:19:55,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:55,963 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 36 proven. 3 refuted. 0 times theorem prover too weak. 338 trivial. 0 not checked. [2020-10-13 09:19:55,964 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [98099948] [2020-10-13 09:19:55,964 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:19:55,964 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:19:55,965 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279097459] [2020-10-13 09:19:55,965 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:19:55,966 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:19:55,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:19:55,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:19:55,966 INFO L87 Difference]: Start difference. First operand 8367 states and 9396 transitions. Second operand 5 states. [2020-10-13 09:19:58,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:19:58,432 INFO L93 Difference]: Finished difference Result 18426 states and 21010 transitions. [2020-10-13 09:19:58,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:19:58,433 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 447 [2020-10-13 09:19:58,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:19:58,466 INFO L225 Difference]: With dead ends: 18426 [2020-10-13 09:19:58,466 INFO L226 Difference]: Without dead ends: 10069 [2020-10-13 09:19:58,491 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 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 09:19:58,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10069 states. [2020-10-13 09:19:58,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10069 to 9723. [2020-10-13 09:19:58,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9723 states. [2020-10-13 09:19:58,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9723 states to 9723 states and 10831 transitions. [2020-10-13 09:19:58,702 INFO L78 Accepts]: Start accepts. Automaton has 9723 states and 10831 transitions. Word has length 447 [2020-10-13 09:19:58,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:19:58,702 INFO L479 AbstractCegarLoop]: Abstraction has 9723 states and 10831 transitions. [2020-10-13 09:19:58,702 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:19:58,703 INFO L276 IsEmpty]: Start isEmpty. Operand 9723 states and 10831 transitions. [2020-10-13 09:19:58,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 768 [2020-10-13 09:19:58,728 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:19:58,729 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:19:58,729 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 09:19:58,729 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:19:58,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:19:58,730 INFO L82 PathProgramCache]: Analyzing trace with hash 1484616029, now seen corresponding path program 1 times [2020-10-13 09:19:58,730 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:19:58,730 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1877284585] [2020-10-13 09:19:58,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:19:58,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:58,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:58,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:59,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:00,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:03,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:03,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 785 [2020-10-13 09:20:03,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:20:03,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-13 09:20:03,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:03,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:20:03,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 435 [2020-10-13 09:20:03,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-13 09:20:03,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:03,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:20:03,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:03,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:03,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:03,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:20:03,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:03,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:20:03,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:03,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:20:03,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:20:03,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:20:03,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:03,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:20:03,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:03,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:03,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:03,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-13 09:20:03,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:03,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-13 09:20:03,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:03,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:20:03,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:20:03,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:20:03,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:03,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-10-13 09:20:03,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:03,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:04,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:04,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-13 09:20:04,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:04,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-13 09:20:04,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:04,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:20:04,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:20:04,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:20:04,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:04,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2020-10-13 09:20:04,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:04,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:04,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:04,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-13 09:20:04,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:04,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-13 09:20:04,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:04,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:20:04,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:20:04,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-10-13 09:20:04,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:04,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2020-10-13 09:20:04,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:04,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:04,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:04,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 09:20:04,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:04,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-13 09:20:04,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:04,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:20:04,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:20:04,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-13 09:20:04,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:04,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 539 [2020-10-13 09:20:04,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:04,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:04,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:04,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 219 [2020-10-13 09:20:04,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:04,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-13 09:20:04,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:04,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:20:04,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 216 [2020-10-13 09:20:04,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:20:04,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:05,138 INFO L134 CoverageAnalysis]: Checked inductivity of 1328 backedges. 398 proven. 109 refuted. 0 times theorem prover too weak. 821 trivial. 0 not checked. [2020-10-13 09:20:05,138 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1877284585] [2020-10-13 09:20:05,138 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:20:05,139 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:20:05,139 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605958458] [2020-10-13 09:20:05,140 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:20:05,140 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:20:05,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:20:05,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:20:05,141 INFO L87 Difference]: Start difference. First operand 9723 states and 10831 transitions. Second operand 7 states. [2020-10-13 09:20:08,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:20:08,609 INFO L93 Difference]: Finished difference Result 20955 states and 24003 transitions. [2020-10-13 09:20:08,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 09:20:08,610 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 767 [2020-10-13 09:20:08,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:20:08,654 INFO L225 Difference]: With dead ends: 20955 [2020-10-13 09:20:08,654 INFO L226 Difference]: Without dead ends: 11242 [2020-10-13 09:20:08,677 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-13 09:20:08,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11242 states. [2020-10-13 09:20:08,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11242 to 11095. [2020-10-13 09:20:08,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11095 states. [2020-10-13 09:20:08,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11095 states to 11095 states and 12270 transitions. [2020-10-13 09:20:08,943 INFO L78 Accepts]: Start accepts. Automaton has 11095 states and 12270 transitions. Word has length 767 [2020-10-13 09:20:08,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:20:08,944 INFO L479 AbstractCegarLoop]: Abstraction has 11095 states and 12270 transitions. [2020-10-13 09:20:08,945 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:20:08,945 INFO L276 IsEmpty]: Start isEmpty. Operand 11095 states and 12270 transitions. [2020-10-13 09:20:08,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 785 [2020-10-13 09:20:08,977 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:20:08,978 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:20:08,979 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 09:20:08,979 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:20:08,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:20:08,979 INFO L82 PathProgramCache]: Analyzing trace with hash -702784914, now seen corresponding path program 1 times [2020-10-13 09:20:08,980 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:20:08,980 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [985241398] [2020-10-13 09:20:08,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:20:09,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:09,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:09,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:09,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:10,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:14,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:14,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 802 [2020-10-13 09:20:14,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:20:14,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5048 [2020-10-13 09:20:14,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:14,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:20:14,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 145 [2020-10-13 09:20:14,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-13 09:20:14,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:14,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:20:14,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:14,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:14,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:14,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:20:14,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:14,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:20:14,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:14,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:20:14,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:20:14,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:20:14,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:14,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:20:14,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:14,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:14,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:14,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-13 09:20:14,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:14,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-13 09:20:14,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:14,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:20:14,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:20:14,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-13 09:20:14,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:14,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-10-13 09:20:14,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:14,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:14,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:14,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-13 09:20:14,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:14,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-13 09:20:14,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:14,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:20:14,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:20:14,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-13 09:20:14,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:14,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2020-10-13 09:20:14,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:14,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:14,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:14,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-13 09:20:14,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:14,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-13 09:20:14,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:14,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:20:14,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 186 [2020-10-13 09:20:14,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:20:14,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:14,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 446 [2020-10-13 09:20:14,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:14,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:14,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:14,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 09:20:14,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:14,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 09:20:14,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:14,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:20:14,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-13 09:20:14,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:20:14,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:14,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 556 [2020-10-13 09:20:14,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:14,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:14,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:14,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 219 [2020-10-13 09:20:14,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:14,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-13 09:20:14,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:14,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:20:14,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 216 [2020-10-13 09:20:14,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:20:14,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:15,057 INFO L134 CoverageAnalysis]: Checked inductivity of 1298 backedges. 179 proven. 333 refuted. 0 times theorem prover too weak. 786 trivial. 0 not checked. [2020-10-13 09:20:15,058 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [985241398] [2020-10-13 09:20:15,058 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:20:15,058 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:20:15,059 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295559007] [2020-10-13 09:20:15,059 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:20:15,059 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:20:15,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:20:15,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:20:15,060 INFO L87 Difference]: Start difference. First operand 11095 states and 12270 transitions. Second operand 7 states. [2020-10-13 09:20:17,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:20:17,873 INFO L93 Difference]: Finished difference Result 23911 states and 26745 transitions. [2020-10-13 09:20:17,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 09:20:17,874 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 784 [2020-10-13 09:20:17,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:20:17,913 INFO L225 Difference]: With dead ends: 23911 [2020-10-13 09:20:17,913 INFO L226 Difference]: Without dead ends: 12826 [2020-10-13 09:20:17,934 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:20:17,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12826 states. [2020-10-13 09:20:18,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12826 to 12815. [2020-10-13 09:20:18,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12815 states. [2020-10-13 09:20:18,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12815 states to 12815 states and 14381 transitions. [2020-10-13 09:20:18,289 INFO L78 Accepts]: Start accepts. Automaton has 12815 states and 14381 transitions. Word has length 784 [2020-10-13 09:20:18,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:20:18,290 INFO L479 AbstractCegarLoop]: Abstraction has 12815 states and 14381 transitions. [2020-10-13 09:20:18,291 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:20:18,291 INFO L276 IsEmpty]: Start isEmpty. Operand 12815 states and 14381 transitions. [2020-10-13 09:20:18,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 820 [2020-10-13 09:20:18,328 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:20:18,329 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:20:18,329 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 09:20:18,329 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:20:18,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:20:18,330 INFO L82 PathProgramCache]: Analyzing trace with hash 1662340828, now seen corresponding path program 1 times [2020-10-13 09:20:18,330 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:20:18,331 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [940612144] [2020-10-13 09:20:18,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:20:18,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:18,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:18,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:18,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:19,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:22,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:23,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:23,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 839 [2020-10-13 09:20:23,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 09:20:23,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5053 [2020-10-13 09:20:23,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:23,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:20:23,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-13 09:20:23,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-13 09:20:23,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:23,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:20:23,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:23,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:23,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:23,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:20:23,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:23,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 09:20:23,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:23,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:20:23,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:20:23,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:20:23,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:23,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:20:23,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:23,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:23,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:23,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-13 09:20:23,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:23,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-13 09:20:23,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:23,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:20:23,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:20:23,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 09:20:23,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:23,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-13 09:20:23,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:23,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:23,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:23,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-13 09:20:23,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:23,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-13 09:20:23,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:23,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:20:23,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:20:23,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-13 09:20:23,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:23,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-10-13 09:20:23,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:23,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:23,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:23,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-13 09:20:23,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:23,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 09:20:23,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:23,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:20:23,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-13 09:20:23,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:20:23,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:23,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2020-10-13 09:20:23,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:23,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:23,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:23,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-13 09:20:23,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:23,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-13 09:20:23,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:23,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:20:23,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 186 [2020-10-13 09:20:23,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:20:23,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:23,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 481 [2020-10-13 09:20:23,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:23,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:23,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:23,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 09:20:23,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:23,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-13 09:20:23,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:23,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:20:23,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-13 09:20:23,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:20:23,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:23,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 591 [2020-10-13 09:20:23,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:24,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:24,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:24,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 219 [2020-10-13 09:20:24,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:24,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-13 09:20:24,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:24,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:20:24,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 216 [2020-10-13 09:20:24,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:20:24,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:24,469 INFO L134 CoverageAnalysis]: Checked inductivity of 1564 backedges. 149 proven. 270 refuted. 0 times theorem prover too weak. 1145 trivial. 0 not checked. [2020-10-13 09:20:24,469 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [940612144] [2020-10-13 09:20:24,470 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:20:24,470 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 09:20:24,470 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039211465] [2020-10-13 09:20:24,471 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 09:20:24,471 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:20:24,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 09:20:24,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 09:20:24,471 INFO L87 Difference]: Start difference. First operand 12815 states and 14381 transitions. Second operand 8 states. [2020-10-13 09:20:27,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:20:27,230 INFO L93 Difference]: Finished difference Result 27673 states and 31071 transitions. [2020-10-13 09:20:27,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 09:20:27,231 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 819 [2020-10-13 09:20:27,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:20:27,268 INFO L225 Difference]: With dead ends: 27673 [2020-10-13 09:20:27,268 INFO L226 Difference]: Without dead ends: 14868 [2020-10-13 09:20:27,293 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-13 09:20:27,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14868 states. [2020-10-13 09:20:27,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14868 to 14181. [2020-10-13 09:20:27,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14181 states. [2020-10-13 09:20:27,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14181 states to 14181 states and 15686 transitions. [2020-10-13 09:20:27,651 INFO L78 Accepts]: Start accepts. Automaton has 14181 states and 15686 transitions. Word has length 819 [2020-10-13 09:20:27,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:20:27,652 INFO L479 AbstractCegarLoop]: Abstraction has 14181 states and 15686 transitions. [2020-10-13 09:20:27,652 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 09:20:27,652 INFO L276 IsEmpty]: Start isEmpty. Operand 14181 states and 15686 transitions. [2020-10-13 09:20:27,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 969 [2020-10-13 09:20:27,712 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:20:27,713 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:20:27,715 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 09:20:27,715 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:20:27,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:20:27,716 INFO L82 PathProgramCache]: Analyzing trace with hash 991671187, now seen corresponding path program 1 times [2020-10-13 09:20:27,716 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:20:27,717 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1337451002] [2020-10-13 09:20:27,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:20:27,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:27,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:28,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:28,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:28,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:32,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:32,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:32,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 988 [2020-10-13 09:20:32,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 09:20:32,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5050 [2020-10-13 09:20:32,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:32,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:20:32,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 259 [2020-10-13 09:20:32,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-13 09:20:32,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:32,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:20:32,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:32,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:32,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:32,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:20:32,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:32,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:20:32,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:32,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:20:32,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:20:32,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:20:32,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:33,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:20:33,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:33,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:33,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:33,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-13 09:20:33,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:33,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-13 09:20:33,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:33,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:20:33,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:20:33,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 244 [2020-10-13 09:20:33,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:33,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-10-13 09:20:33,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:33,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:33,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:33,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-13 09:20:33,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:33,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-13 09:20:33,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:33,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:20:33,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:20:33,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-13 09:20:33,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:33,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2020-10-13 09:20:33,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:33,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:33,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:33,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-13 09:20:33,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:33,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-13 09:20:33,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:33,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:20:33,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-13 09:20:33,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:20:33,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:33,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 442 [2020-10-13 09:20:33,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:33,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:33,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:33,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-13 09:20:33,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:33,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-13 09:20:33,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:33,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:20:33,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 186 [2020-10-13 09:20:33,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:20:33,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:33,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 630 [2020-10-13 09:20:33,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:33,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:33,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:33,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 09:20:33,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:33,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-13 09:20:33,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:33,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:20:33,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-13 09:20:33,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:20:33,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:33,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 740 [2020-10-13 09:20:33,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:33,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:33,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:33,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 219 [2020-10-13 09:20:33,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:33,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-13 09:20:33,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:33,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:20:33,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 216 [2020-10-13 09:20:33,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:20:33,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:34,048 INFO L134 CoverageAnalysis]: Checked inductivity of 1795 backedges. 149 proven. 270 refuted. 0 times theorem prover too weak. 1376 trivial. 0 not checked. [2020-10-13 09:20:34,049 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1337451002] [2020-10-13 09:20:34,049 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:20:34,049 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:20:34,049 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174575845] [2020-10-13 09:20:34,050 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:20:34,050 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:20:34,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:20:34,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:20:34,051 INFO L87 Difference]: Start difference. First operand 14181 states and 15686 transitions. Second operand 7 states. [2020-10-13 09:20:38,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:20:38,990 INFO L93 Difference]: Finished difference Result 36468 states and 41335 transitions. [2020-10-13 09:20:38,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 09:20:38,991 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 968 [2020-10-13 09:20:38,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:20:39,102 INFO L225 Difference]: With dead ends: 36468 [2020-10-13 09:20:39,102 INFO L226 Difference]: Without dead ends: 22297 [2020-10-13 09:20:39,154 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:20:39,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22297 states. [2020-10-13 09:20:39,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22297 to 20682. [2020-10-13 09:20:39,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20682 states. [2020-10-13 09:20:39,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20682 states to 20682 states and 22729 transitions. [2020-10-13 09:20:39,668 INFO L78 Accepts]: Start accepts. Automaton has 20682 states and 22729 transitions. Word has length 968 [2020-10-13 09:20:39,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:20:39,669 INFO L479 AbstractCegarLoop]: Abstraction has 20682 states and 22729 transitions. [2020-10-13 09:20:39,669 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:20:39,670 INFO L276 IsEmpty]: Start isEmpty. Operand 20682 states and 22729 transitions. [2020-10-13 09:20:39,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1248 [2020-10-13 09:20:39,731 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:20:39,734 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:20:39,734 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 09:20:39,735 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:20:39,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:20:39,735 INFO L82 PathProgramCache]: Analyzing trace with hash 1758966508, now seen corresponding path program 1 times [2020-10-13 09:20:39,735 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:20:39,736 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1369508523] [2020-10-13 09:20:39,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:20:39,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:40,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:40,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:40,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:40,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:40,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:45,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:45,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1273 [2020-10-13 09:20:45,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 09:20:45,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5081 [2020-10-13 09:20:45,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:45,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:20:45,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 356 [2020-10-13 09:20:45,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-13 09:20:45,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:45,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:20:45,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:45,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:45,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:45,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:20:45,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:45,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 09:20:45,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:45,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:20:45,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:20:45,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:20:45,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:45,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:20:45,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:45,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:45,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:45,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-13 09:20:45,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:45,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-13 09:20:45,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:45,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:20:45,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:20:45,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:20:45,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:45,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-10-13 09:20:45,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:45,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:45,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:45,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-13 09:20:45,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:45,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-13 09:20:45,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:45,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:20:45,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:20:45,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-13 09:20:45,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:45,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2020-10-13 09:20:45,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:45,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:45,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:45,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-13 09:20:45,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:45,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-13 09:20:45,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:45,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:20:45,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:20:45,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-13 09:20:45,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:45,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2020-10-13 09:20:45,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:45,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:45,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:45,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-13 09:20:45,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:45,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-13 09:20:45,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:45,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:20:45,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-13 09:20:45,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:20:45,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:45,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 537 [2020-10-13 09:20:45,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:45,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:45,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:45,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-13 09:20:45,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:45,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-13 09:20:45,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:45,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:20:45,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 186 [2020-10-13 09:20:45,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:20:45,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:45,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 725 [2020-10-13 09:20:45,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:45,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:45,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:45,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 09:20:45,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:45,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 09:20:45,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:45,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:20:45,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-13 09:20:45,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:20:45,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:45,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 835 [2020-10-13 09:20:45,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:45,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:45,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:45,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 298 [2020-10-13 09:20:45,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:45,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-13 09:20:45,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:45,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:20:45,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 295 [2020-10-13 09:20:45,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:20:45,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:45,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:20:45,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:45,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:45,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:45,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 09:20:45,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:45,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 09:20:45,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:45,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:20:45,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:20:45,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:20:45,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:45,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1130 [2020-10-13 09:20:45,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:45,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:45,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:45,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-13 09:20:45,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:45,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 09:20:45,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:45,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:20:45,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-13 09:20:45,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:20:45,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:46,666 INFO L134 CoverageAnalysis]: Checked inductivity of 3093 backedges. 267 proven. 337 refuted. 0 times theorem prover too weak. 2489 trivial. 0 not checked. [2020-10-13 09:20:46,666 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1369508523] [2020-10-13 09:20:46,666 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:20:46,667 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:20:46,667 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441198986] [2020-10-13 09:20:46,668 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:20:46,668 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:20:46,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:20:46,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:20:46,669 INFO L87 Difference]: Start difference. First operand 20682 states and 22729 transitions. Second operand 7 states. [2020-10-13 09:20:50,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:20:50,157 INFO L93 Difference]: Finished difference Result 41361 states and 45502 transitions. [2020-10-13 09:20:50,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 09:20:50,159 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1247 [2020-10-13 09:20:50,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:20:50,213 INFO L225 Difference]: With dead ends: 41361 [2020-10-13 09:20:50,213 INFO L226 Difference]: Without dead ends: 21373 [2020-10-13 09:20:50,252 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-13 09:20:50,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21373 states. [2020-10-13 09:20:50,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21373 to 21021. [2020-10-13 09:20:50,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21021 states. [2020-10-13 09:20:50,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21021 states to 21021 states and 22631 transitions. [2020-10-13 09:20:50,606 INFO L78 Accepts]: Start accepts. Automaton has 21021 states and 22631 transitions. Word has length 1247 [2020-10-13 09:20:50,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:20:50,607 INFO L479 AbstractCegarLoop]: Abstraction has 21021 states and 22631 transitions. [2020-10-13 09:20:50,607 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:20:50,607 INFO L276 IsEmpty]: Start isEmpty. Operand 21021 states and 22631 transitions. [2020-10-13 09:20:50,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1506 [2020-10-13 09:20:50,661 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:20:50,662 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:20:50,663 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 09:20:50,663 INFO L427 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:20:50,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:20:50,664 INFO L82 PathProgramCache]: Analyzing trace with hash 1115515232, now seen corresponding path program 1 times [2020-10-13 09:20:50,664 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:20:50,664 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2078860015] [2020-10-13 09:20:50,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:20:50,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:50,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:51,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:51,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:51,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:51,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:55,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:55,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1529 [2020-10-13 09:20:55,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 09:20:55,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5048 [2020-10-13 09:20:55,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:55,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:20:55,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 812 [2020-10-13 09:20:55,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-13 09:20:55,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:55,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:20:55,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:55,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:55,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:55,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:20:55,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:55,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 09:20:55,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:55,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:20:55,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:20:55,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:20:55,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:56,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:20:56,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:56,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:56,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:56,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-13 09:20:56,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:56,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-13 09:20:56,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:56,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:20:56,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:20:56,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:20:56,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:56,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-10-13 09:20:56,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:56,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:56,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:56,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 277 [2020-10-13 09:20:56,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:56,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-13 09:20:56,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:56,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:20:56,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:20:56,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:20:56,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:56,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 533 [2020-10-13 09:20:56,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:56,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:56,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:56,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-13 09:20:56,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:56,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-13 09:20:56,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:56,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:20:56,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:20:56,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 268 [2020-10-13 09:20:56,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:56,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 806 [2020-10-13 09:20:56,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:56,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:56,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:56,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-13 09:20:56,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:56,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-13 09:20:56,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:56,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:20:56,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:20:56,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-13 09:20:56,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:56,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 877 [2020-10-13 09:20:56,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:56,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:56,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:56,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 255 [2020-10-13 09:20:56,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:56,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-13 09:20:56,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:56,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:20:56,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 252 [2020-10-13 09:20:56,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:20:56,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:56,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1131 [2020-10-13 09:20:56,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:56,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:56,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:56,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-13 09:20:56,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:56,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-13 09:20:56,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:56,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:20:56,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 163 [2020-10-13 09:20:56,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:20:56,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:57,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1296 [2020-10-13 09:20:57,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:57,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:57,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:57,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-13 09:20:57,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:57,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 09:20:57,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:57,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:20:57,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-13 09:20:57,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:20:57,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:57,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1388 [2020-10-13 09:20:57,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:57,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:57,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:57,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-13 09:20:57,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:57,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 09:20:57,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:57,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:20:57,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-13 09:20:57,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:20:57,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:58,084 INFO L134 CoverageAnalysis]: Checked inductivity of 3860 backedges. 350 proven. 274 refuted. 0 times theorem prover too weak. 3236 trivial. 0 not checked. [2020-10-13 09:20:58,085 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2078860015] [2020-10-13 09:20:58,085 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:20:58,085 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:20:58,085 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120498318] [2020-10-13 09:20:58,086 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:20:58,086 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:20:58,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:20:58,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:20:58,087 INFO L87 Difference]: Start difference. First operand 21021 states and 22631 transitions. Second operand 7 states. [2020-10-13 09:21:01,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:21:01,544 INFO L93 Difference]: Finished difference Result 42037 states and 45366 transitions. [2020-10-13 09:21:01,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 09:21:01,545 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1505 [2020-10-13 09:21:01,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:21:01,598 INFO L225 Difference]: With dead ends: 42037 [2020-10-13 09:21:01,599 INFO L226 Difference]: Without dead ends: 21700 [2020-10-13 09:21:01,632 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:21:01,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21700 states. [2020-10-13 09:21:01,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21700 to 21693. [2020-10-13 09:21:01,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21693 states. [2020-10-13 09:21:01,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21693 states to 21693 states and 23351 transitions. [2020-10-13 09:21:01,983 INFO L78 Accepts]: Start accepts. Automaton has 21693 states and 23351 transitions. Word has length 1505 [2020-10-13 09:21:01,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:21:01,985 INFO L479 AbstractCegarLoop]: Abstraction has 21693 states and 23351 transitions. [2020-10-13 09:21:01,985 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:21:01,985 INFO L276 IsEmpty]: Start isEmpty. Operand 21693 states and 23351 transitions. [2020-10-13 09:21:02,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1551 [2020-10-13 09:21:02,042 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:21:02,043 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 6, 6, 6, 6, 6, 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, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:21:02,043 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 09:21:02,043 INFO L427 AbstractCegarLoop]: === Iteration 18 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:21:02,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:21:02,044 INFO L82 PathProgramCache]: Analyzing trace with hash 1719385374, now seen corresponding path program 1 times [2020-10-13 09:21:02,044 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:21:02,044 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1600058804] [2020-10-13 09:21:02,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:21:02,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:02,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:02,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:03,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:03,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:07,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:07,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1580 [2020-10-13 09:21:07,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:21:07,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-13 09:21:07,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:07,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 09:21:07,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:21:07,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-13 09:21:07,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:07,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:21:07,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:07,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:07,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:07,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:21:07,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:07,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:21:07,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:07,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:21:07,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:21:07,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:21:07,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:07,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:21:07,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:07,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:07,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:07,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-13 09:21:07,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:07,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-13 09:21:07,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:07,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:21:07,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:21:07,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-13 09:21:07,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:07,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-13 09:21:07,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:07,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:07,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:07,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-13 09:21:07,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:07,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-13 09:21:07,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:07,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:21:07,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 160 [2020-10-13 09:21:07,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:21:07,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:07,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2020-10-13 09:21:07,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:07,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:07,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:07,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-13 09:21:07,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:07,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-13 09:21:07,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:07,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:21:07,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 127 [2020-10-13 09:21:07,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:21:07,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:07,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2020-10-13 09:21:07,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:07,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:07,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:07,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-13 09:21:07,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:07,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 09:21:07,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:07,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:21:07,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-10-13 09:21:07,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:21:07,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:21:07,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 469 [2020-10-13 09:21:07,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:07,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:07,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:07,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-13 09:21:07,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:07,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-13 09:21:07,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:07,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:21:07,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-13 09:21:07,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:21:07,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:07,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 584 [2020-10-13 09:21:07,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:07,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:07,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:07,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-13 09:21:07,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:07,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-13 09:21:07,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:07,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:21:07,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 186 [2020-10-13 09:21:07,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:21:07,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:07,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 772 [2020-10-13 09:21:07,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:07,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:07,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:07,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 09:21:07,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:07,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-13 09:21:07,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:07,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:21:07,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-13 09:21:07,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:21:07,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:07,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 882 [2020-10-13 09:21:07,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:07,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:08,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:08,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-13 09:21:08,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:08,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-13 09:21:08,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:08,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:21:08,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 213 [2020-10-13 09:21:08,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:21:08,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:08,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1097 [2020-10-13 09:21:08,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:08,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:08,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:08,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 339 [2020-10-13 09:21:08,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:08,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-13 09:21:08,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:08,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:21:08,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 336 [2020-10-13 09:21:08,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:21:08,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:08,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:21:08,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:08,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:08,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:08,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-13 09:21:08,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:08,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 09:21:08,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:08,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:21:08,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:21:08,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:21:08,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:08,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1433 [2020-10-13 09:21:08,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:08,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:08,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:08,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-13 09:21:08,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:08,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 09:21:08,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:08,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:21:08,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-13 09:21:08,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:21:08,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:09,307 INFO L134 CoverageAnalysis]: Checked inductivity of 5117 backedges. 110 proven. 825 refuted. 0 times theorem prover too weak. 4182 trivial. 0 not checked. [2020-10-13 09:21:09,308 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1600058804] [2020-10-13 09:21:09,308 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:21:09,308 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:21:09,309 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739349462] [2020-10-13 09:21:09,310 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:21:09,310 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:21:09,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:21:09,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:21:09,310 INFO L87 Difference]: Start difference. First operand 21693 states and 23351 transitions. Second operand 7 states. [2020-10-13 09:21:12,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:21:12,725 INFO L93 Difference]: Finished difference Result 47178 states and 50960 transitions. [2020-10-13 09:21:12,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 09:21:12,726 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1550 [2020-10-13 09:21:12,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:21:12,811 INFO L225 Difference]: With dead ends: 47178 [2020-10-13 09:21:12,811 INFO L226 Difference]: Without dead ends: 26169 [2020-10-13 09:21:12,851 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:21:12,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26169 states. [2020-10-13 09:21:13,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26169 to 25139. [2020-10-13 09:21:13,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25139 states. [2020-10-13 09:21:13,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25139 states to 25139 states and 27107 transitions. [2020-10-13 09:21:13,304 INFO L78 Accepts]: Start accepts. Automaton has 25139 states and 27107 transitions. Word has length 1550 [2020-10-13 09:21:13,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:21:13,305 INFO L479 AbstractCegarLoop]: Abstraction has 25139 states and 27107 transitions. [2020-10-13 09:21:13,305 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:21:13,305 INFO L276 IsEmpty]: Start isEmpty. Operand 25139 states and 27107 transitions. [2020-10-13 09:21:13,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1583 [2020-10-13 09:21:13,373 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:21:13,374 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:21:13,374 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-13 09:21:13,374 INFO L427 AbstractCegarLoop]: === Iteration 19 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:21:13,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:21:13,375 INFO L82 PathProgramCache]: Analyzing trace with hash 1671129504, now seen corresponding path program 1 times [2020-10-13 09:21:13,375 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:21:13,375 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1377944686] [2020-10-13 09:21:13,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:21:13,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:13,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:13,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:15,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:17,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:18,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:18,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1608 [2020-10-13 09:21:18,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:21:18,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5184 [2020-10-13 09:21:18,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:18,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:21:18,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 924 [2020-10-13 09:21:18,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 218 [2020-10-13 09:21:18,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:18,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:21:18,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:18,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:18,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:18,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:21:18,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:18,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 09:21:18,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:18,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:21:18,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:21:18,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:21:18,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:18,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:21:18,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:18,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:18,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:18,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-13 09:21:18,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:18,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-13 09:21:18,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:18,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:21:18,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:21:18,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:21:18,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:18,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-10-13 09:21:19,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:19,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:19,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:19,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 277 [2020-10-13 09:21:19,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:19,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-13 09:21:19,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:19,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:21:19,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:21:19,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:21:19,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:19,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 533 [2020-10-13 09:21:19,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:19,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:19,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:19,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-13 09:21:19,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:19,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 09:21:19,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:19,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:21:19,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:21:19,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:21:19,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:19,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 616 [2020-10-13 09:21:19,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:19,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:19,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:19,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-13 09:21:19,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:19,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-13 09:21:19,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:19,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:21:19,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:21:19,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:21:19,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:19,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 804 [2020-10-13 09:21:19,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:19,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:19,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:19,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 09:21:19,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:19,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-13 09:21:19,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:19,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:21:19,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:21:19,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-13 09:21:19,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:19,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 914 [2020-10-13 09:21:19,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:19,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:19,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:19,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-13 09:21:19,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:19,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-10-13 09:21:19,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:19,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:21:19,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:21:19,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 216 [2020-10-13 09:21:19,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:19,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1129 [2020-10-13 09:21:19,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:19,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:19,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:19,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 339 [2020-10-13 09:21:19,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:19,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-13 09:21:19,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:19,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:21:19,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 336 [2020-10-13 09:21:19,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:21:19,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:19,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:21:19,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:19,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:20,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:20,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-13 09:21:20,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:20,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 09:21:20,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:20,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:21:20,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:21:20,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:21:20,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:20,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1465 [2020-10-13 09:21:20,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:20,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:20,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:20,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-13 09:21:20,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:20,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 09:21:20,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:20,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:21:20,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-13 09:21:20,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:21:20,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:21,404 INFO L134 CoverageAnalysis]: Checked inductivity of 4032 backedges. 944 proven. 318 refuted. 0 times theorem prover too weak. 2770 trivial. 0 not checked. [2020-10-13 09:21:21,404 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1377944686] [2020-10-13 09:21:21,404 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:21:21,404 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:21:21,405 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096347935] [2020-10-13 09:21:21,405 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:21:21,406 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:21:21,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:21:21,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:21:21,406 INFO L87 Difference]: Start difference. First operand 25139 states and 27107 transitions. Second operand 7 states. [2020-10-13 09:21:24,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:21:24,683 INFO L93 Difference]: Finished difference Result 47231 states and 51098 transitions. [2020-10-13 09:21:24,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 09:21:24,684 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1582 [2020-10-13 09:21:24,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:21:24,739 INFO L225 Difference]: With dead ends: 47231 [2020-10-13 09:21:24,739 INFO L226 Difference]: Without dead ends: 25135 [2020-10-13 09:21:24,765 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-13 09:21:24,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25135 states. [2020-10-13 09:21:25,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25135 to 24788. [2020-10-13 09:21:25,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24788 states. [2020-10-13 09:21:25,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24788 states to 24788 states and 26650 transitions. [2020-10-13 09:21:25,208 INFO L78 Accepts]: Start accepts. Automaton has 24788 states and 26650 transitions. Word has length 1582 [2020-10-13 09:21:25,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:21:25,209 INFO L479 AbstractCegarLoop]: Abstraction has 24788 states and 26650 transitions. [2020-10-13 09:21:25,210 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:21:25,210 INFO L276 IsEmpty]: Start isEmpty. Operand 24788 states and 26650 transitions. [2020-10-13 09:21:25,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1618 [2020-10-13 09:21:25,494 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:21:25,495 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:21:25,495 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-13 09:21:25,496 INFO L427 AbstractCegarLoop]: === Iteration 20 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:21:25,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:21:25,497 INFO L82 PathProgramCache]: Analyzing trace with hash 1646239861, now seen corresponding path program 1 times [2020-10-13 09:21:25,497 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:21:25,497 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [823065619] [2020-10-13 09:21:25,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:21:25,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:25,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:25,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:26,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:29,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:30,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:30,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1643 [2020-10-13 09:21:30,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:21:30,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5055 [2020-10-13 09:21:30,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:30,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:21:30,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 926 [2020-10-13 09:21:30,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-13 09:21:30,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:30,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:21:30,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:30,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:30,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:30,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:21:30,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:30,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:21:30,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:30,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:21:30,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:21:30,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:21:30,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:30,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:21:30,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:30,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:30,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:30,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-13 09:21:30,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:30,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-13 09:21:30,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:30,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:21:30,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:21:30,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:21:30,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:30,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-10-13 09:21:30,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:30,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:31,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:31,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 277 [2020-10-13 09:21:31,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:31,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-13 09:21:31,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:31,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:21:31,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:21:31,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:21:31,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:31,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 533 [2020-10-13 09:21:31,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:31,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:31,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:31,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-13 09:21:31,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:31,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-13 09:21:31,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:31,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:21:31,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:21:31,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:21:31,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:31,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 806 [2020-10-13 09:21:31,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:31,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:31,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:31,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-13 09:21:31,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:31,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-13 09:21:31,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:31,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:21:31,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:21:31,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-13 09:21:31,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:31,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 918 [2020-10-13 09:21:31,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:31,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:31,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:31,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-13 09:21:31,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:31,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-13 09:21:31,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:31,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:21:31,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:21:31,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-13 09:21:31,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:31,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 989 [2020-10-13 09:21:31,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:31,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:31,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:31,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 255 [2020-10-13 09:21:31,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:31,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-13 09:21:31,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:31,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:21:31,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 252 [2020-10-13 09:21:31,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:21:31,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:31,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1243 [2020-10-13 09:21:31,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:31,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:31,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:31,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-13 09:21:31,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:31,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-13 09:21:31,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:31,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:21:31,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 163 [2020-10-13 09:21:31,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:21:31,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:31,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1408 [2020-10-13 09:21:31,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:31,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:31,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:31,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-13 09:21:31,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:31,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 09:21:31,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:31,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:21:31,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-13 09:21:31,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:21:31,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:31,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1500 [2020-10-13 09:21:31,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:31,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:31,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:31,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-13 09:21:31,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:31,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-13 09:21:31,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:31,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:21:31,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-13 09:21:31,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:21:31,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:32,935 INFO L134 CoverageAnalysis]: Checked inductivity of 4701 backedges. 450 proven. 274 refuted. 0 times theorem prover too weak. 3977 trivial. 0 not checked. [2020-10-13 09:21:32,935 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [823065619] [2020-10-13 09:21:32,935 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:21:32,936 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:21:32,936 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626099510] [2020-10-13 09:21:32,937 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:21:32,937 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:21:32,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:21:32,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:21:32,937 INFO L87 Difference]: Start difference. First operand 24788 states and 26650 transitions. Second operand 7 states. [2020-10-13 09:21:36,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:21:36,595 INFO L93 Difference]: Finished difference Result 47562 states and 51320 transitions. [2020-10-13 09:21:36,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 09:21:36,597 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1617 [2020-10-13 09:21:36,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:21:36,647 INFO L225 Difference]: With dead ends: 47562 [2020-10-13 09:21:36,648 INFO L226 Difference]: Without dead ends: 25817 [2020-10-13 09:21:36,675 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:21:36,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25817 states. [2020-10-13 09:21:36,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25817 to 25133. [2020-10-13 09:21:36,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25133 states. [2020-10-13 09:21:36,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25133 states to 25133 states and 27021 transitions. [2020-10-13 09:21:36,981 INFO L78 Accepts]: Start accepts. Automaton has 25133 states and 27021 transitions. Word has length 1617 [2020-10-13 09:21:36,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:21:36,982 INFO L479 AbstractCegarLoop]: Abstraction has 25133 states and 27021 transitions. [2020-10-13 09:21:36,982 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:21:36,982 INFO L276 IsEmpty]: Start isEmpty. Operand 25133 states and 27021 transitions. [2020-10-13 09:21:37,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1719 [2020-10-13 09:21:37,024 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:21:37,025 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:21:37,025 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-13 09:21:37,025 INFO L427 AbstractCegarLoop]: === Iteration 21 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:21:37,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:21:37,026 INFO L82 PathProgramCache]: Analyzing trace with hash -2105344835, now seen corresponding path program 1 times [2020-10-13 09:21:37,026 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:21:37,027 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1610106204] [2020-10-13 09:21:37,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:21:37,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:37,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:37,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:37,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:38,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:39,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:42,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:42,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1742 [2020-10-13 09:21:42,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 09:21:42,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5068 [2020-10-13 09:21:42,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:42,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 09:21:42,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:21:42,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 255 [2020-10-13 09:21:42,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:42,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:21:42,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:42,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:42,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:42,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:21:42,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:42,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:21:42,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:42,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:21:42,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:21:42,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:21:42,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:42,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:21:42,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:42,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:42,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:42,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-13 09:21:42,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:42,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 187 [2020-10-13 09:21:42,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:42,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:21:42,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:21:42,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 250 [2020-10-13 09:21:42,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:42,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-10-13 09:21:42,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:42,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:42,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:42,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 277 [2020-10-13 09:21:42,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:42,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-13 09:21:42,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:42,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:21:42,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 274 [2020-10-13 09:21:42,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:21:42,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:42,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 533 [2020-10-13 09:21:42,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:42,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:42,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:42,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-13 09:21:42,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:42,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-13 09:21:42,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:42,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:21:42,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 271 [2020-10-13 09:21:42,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:21:42,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:42,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 806 [2020-10-13 09:21:43,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:43,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:43,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:43,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 285 [2020-10-13 09:21:43,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:43,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-13 09:21:43,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:43,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:21:43,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 282 [2020-10-13 09:21:43,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:21:43,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:43,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1090 [2020-10-13 09:21:43,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:43,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:43,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:43,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 255 [2020-10-13 09:21:43,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:43,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-13 09:21:43,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:43,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:21:43,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 252 [2020-10-13 09:21:43,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:21:43,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:43,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1344 [2020-10-13 09:21:43,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:43,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:43,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:43,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-13 09:21:43,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:43,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-13 09:21:43,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:43,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:21:43,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 163 [2020-10-13 09:21:43,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:21:43,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:43,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1509 [2020-10-13 09:21:43,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:43,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:43,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:43,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-13 09:21:43,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:43,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 09:21:43,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:43,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:21:43,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-13 09:21:43,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:21:43,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:43,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1601 [2020-10-13 09:21:43,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:43,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:43,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:43,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-13 09:21:43,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:43,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 09:21:43,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:43,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:21:43,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-13 09:21:43,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:21:43,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:44,905 INFO L134 CoverageAnalysis]: Checked inductivity of 4779 backedges. 88 proven. 1325 refuted. 0 times theorem prover too weak. 3366 trivial. 0 not checked. [2020-10-13 09:21:44,905 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1610106204] [2020-10-13 09:21:44,905 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:21:44,905 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:21:44,905 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759525561] [2020-10-13 09:21:44,906 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:21:44,907 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:21:44,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:21:44,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:21:44,907 INFO L87 Difference]: Start difference. First operand 25133 states and 27021 transitions. Second operand 7 states. [2020-10-13 09:21:48,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:21:48,041 INFO L93 Difference]: Finished difference Result 44057 states and 46446 transitions. [2020-10-13 09:21:48,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 09:21:48,042 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1718 [2020-10-13 09:21:48,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:21:48,075 INFO L225 Difference]: With dead ends: 44057 [2020-10-13 09:21:48,075 INFO L226 Difference]: Without dead ends: 24576 [2020-10-13 09:21:48,095 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-13 09:21:48,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24576 states. [2020-10-13 09:21:48,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24576 to 22215. [2020-10-13 09:21:48,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22215 states. [2020-10-13 09:21:48,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22215 states to 22215 states and 23420 transitions. [2020-10-13 09:21:48,378 INFO L78 Accepts]: Start accepts. Automaton has 22215 states and 23420 transitions. Word has length 1718 [2020-10-13 09:21:48,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:21:48,379 INFO L479 AbstractCegarLoop]: Abstraction has 22215 states and 23420 transitions. [2020-10-13 09:21:48,379 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:21:48,379 INFO L276 IsEmpty]: Start isEmpty. Operand 22215 states and 23420 transitions. [2020-10-13 09:21:48,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1966 [2020-10-13 09:21:48,413 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:21:48,414 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-13 09:21:48,414 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-13 09:21:48,414 INFO L427 AbstractCegarLoop]: === Iteration 22 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:21:48,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:21:48,415 INFO L82 PathProgramCache]: Analyzing trace with hash -2137528211, now seen corresponding path program 1 times [2020-10-13 09:21:48,415 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:21:48,415 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [654453889] [2020-10-13 09:21:48,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:21:48,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:48,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:49,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:49,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:49,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:50,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:51,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:53,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:53,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1991 [2020-10-13 09:21:53,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 09:21:53,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5081 [2020-10-13 09:21:53,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:53,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:21:53,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1864 [2020-10-13 09:21:53,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-13 09:21:53,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:54,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:21:54,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:54,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:54,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:54,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:21:54,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:54,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 09:21:54,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:54,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:21:54,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:21:54,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:21:54,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:54,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:21:54,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:54,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:54,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:54,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-13 09:21:54,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:54,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-13 09:21:54,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:54,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:21:54,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:21:54,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:21:54,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:54,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-13 09:21:54,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:54,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:54,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:54,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-13 09:21:54,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:54,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-13 09:21:54,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:54,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:21:54,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:21:54,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:21:54,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:54,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2020-10-13 09:21:54,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:54,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:54,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:54,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 277 [2020-10-13 09:21:54,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:54,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-13 09:21:54,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:54,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:21:54,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:21:54,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:21:54,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:54,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 780 [2020-10-13 09:21:54,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:54,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:54,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:54,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-13 09:21:54,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:54,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-13 09:21:54,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:54,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:21:54,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:21:54,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:21:54,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:54,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1053 [2020-10-13 09:21:54,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:54,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:54,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:54,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 285 [2020-10-13 09:21:54,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:54,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-13 09:21:54,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:54,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:21:54,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:21:54,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:21:54,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:54,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1337 [2020-10-13 09:21:54,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:54,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:54,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:54,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 255 [2020-10-13 09:21:54,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:54,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-13 09:21:54,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:54,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:21:54,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:21:54,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:21:54,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:55,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1591 [2020-10-13 09:21:55,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:55,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:55,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:55,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-13 09:21:55,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:55,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-13 09:21:55,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:55,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:21:55,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:21:55,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:21:55,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:55,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1756 [2020-10-13 09:21:55,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:55,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:55,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:55,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-13 09:21:55,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:55,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-13 09:21:55,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:55,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:21:55,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:21:55,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-13 09:21:55,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:55,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1848 [2020-10-13 09:21:55,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:55,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:55,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:55,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-13 09:21:55,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:55,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-13 09:21:55,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:55,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:21:55,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:21:55,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-13 09:21:55,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:57,614 INFO L134 CoverageAnalysis]: Checked inductivity of 6389 backedges. 951 proven. 2 refuted. 0 times theorem prover too weak. 5436 trivial. 0 not checked. [2020-10-13 09:21:57,615 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [654453889] [2020-10-13 09:21:57,615 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:21:57,615 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:21:57,615 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460748641] [2020-10-13 09:21:57,616 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:21:57,616 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:21:57,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:21:57,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:21:57,617 INFO L87 Difference]: Start difference. First operand 22215 states and 23420 transitions. Second operand 7 states. [2020-10-13 09:22:00,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:22:00,677 INFO L93 Difference]: Finished difference Result 46861 states and 49574 transitions. [2020-10-13 09:22:00,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 09:22:00,679 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1965 [2020-10-13 09:22:00,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:22:00,714 INFO L225 Difference]: With dead ends: 46861 [2020-10-13 09:22:00,714 INFO L226 Difference]: Without dead ends: 21227 [2020-10-13 09:22:00,735 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:22:00,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21227 states. [2020-10-13 09:22:00,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21227 to 20128. [2020-10-13 09:22:00,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20128 states. [2020-10-13 09:22:00,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20128 states to 20128 states and 21028 transitions. [2020-10-13 09:22:00,953 INFO L78 Accepts]: Start accepts. Automaton has 20128 states and 21028 transitions. Word has length 1965 [2020-10-13 09:22:00,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:22:00,954 INFO L479 AbstractCegarLoop]: Abstraction has 20128 states and 21028 transitions. [2020-10-13 09:22:00,954 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:22:00,954 INFO L276 IsEmpty]: Start isEmpty. Operand 20128 states and 21028 transitions. [2020-10-13 09:22:00,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2079 [2020-10-13 09:22:00,991 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:22:00,992 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-13 09:22:00,992 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-13 09:22:00,992 INFO L427 AbstractCegarLoop]: === Iteration 23 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:22:00,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:22:00,993 INFO L82 PathProgramCache]: Analyzing trace with hash 1914975206, now seen corresponding path program 1 times [2020-10-13 09:22:00,993 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:22:00,993 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [716080487] [2020-10-13 09:22:00,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:22:01,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:22:01,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:01,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:01,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:02,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:06,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:22:06,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 2104 [2020-10-13 09:22:06,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:22:06,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 09:22:06,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:22:06,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:22:06,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 257 [2020-10-13 09:22:06,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 252 [2020-10-13 09:22:06,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:22:06,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:22:06,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:22:06,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:06,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:22:06,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:22:06,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:22:06,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:22:06,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:22:06,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:22:06,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:22:06,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:22:06,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:22:06,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:22:06,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:22:06,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:06,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:22:06,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-13 09:22:06,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:22:06,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-13 09:22:06,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:22:06,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:22:06,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:22:06,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 242 [2020-10-13 09:22:06,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:22:06,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-13 09:22:06,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:22:06,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:06,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:22:06,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-13 09:22:06,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:22:06,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 291 [2020-10-13 09:22:06,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:22:06,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:22:06,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:22:06,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 250 [2020-10-13 09:22:06,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:22:06,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2020-10-13 09:22:07,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:22:07,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:07,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:22:07,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 277 [2020-10-13 09:22:07,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:22:07,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-13 09:22:07,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:22:07,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:22:07,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 274 [2020-10-13 09:22:07,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:22:07,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:22:07,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 780 [2020-10-13 09:22:07,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:22:07,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:07,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:22:07,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-13 09:22:07,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:22:07,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-13 09:22:07,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:22:07,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:22:07,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 271 [2020-10-13 09:22:07,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:22:07,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:22:07,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1053 [2020-10-13 09:22:07,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:22:07,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:07,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:22:07,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 285 [2020-10-13 09:22:07,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:22:07,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-13 09:22:07,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:22:07,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:22:07,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 282 [2020-10-13 09:22:07,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:22:07,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:22:07,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1337 [2020-10-13 09:22:07,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:22:07,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:07,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:22:07,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 255 [2020-10-13 09:22:07,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:22:07,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-13 09:22:07,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:22:07,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:22:07,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 252 [2020-10-13 09:22:07,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:22:07,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:22:07,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1591 [2020-10-13 09:22:07,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:22:07,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:07,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:22:07,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-13 09:22:07,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:22:07,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-13 09:22:07,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:22:07,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:22:07,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 163 [2020-10-13 09:22:07,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:22:07,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:22:07,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1756 [2020-10-13 09:22:07,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:22:07,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:07,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:22:07,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 206 [2020-10-13 09:22:07,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:22:07,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-13 09:22:07,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:22:07,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:22:07,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 203 [2020-10-13 09:22:07,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:22:07,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:22:07,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1961 [2020-10-13 09:22:07,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:22:07,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:07,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:22:07,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-13 09:22:07,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:22:07,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 09:22:07,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:22:07,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:22:07,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-13 09:22:07,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:22:07,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:22:10,164 INFO L134 CoverageAnalysis]: Checked inductivity of 7155 backedges. 371 proven. 1454 refuted. 0 times theorem prover too weak. 5330 trivial. 0 not checked. [2020-10-13 09:22:10,165 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [716080487] [2020-10-13 09:22:10,165 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:22:10,166 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:22:10,166 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859522004] [2020-10-13 09:22:10,167 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:22:10,167 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:22:10,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:22:10,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:22:10,168 INFO L87 Difference]: Start difference. First operand 20128 states and 21028 transitions. Second operand 7 states.