/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 --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=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product40.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 12:15:11,692 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 12:15:11,697 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 12:15:11,742 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 12:15:11,742 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 12:15:11,755 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 12:15:11,757 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 12:15:11,760 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 12:15:11,763 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 12:15:11,767 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 12:15:11,768 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 12:15:11,770 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 12:15:11,771 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 12:15:11,774 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 12:15:11,777 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 12:15:11,779 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 12:15:11,781 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 12:15:11,782 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 12:15:11,784 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 12:15:11,794 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 12:15:11,796 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 12:15:11,798 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 12:15:11,799 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 12:15:11,800 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 12:15:11,803 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 12:15:11,803 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 12:15:11,803 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 12:15:11,807 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 12:15:11,808 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 12:15:11,810 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 12:15:11,810 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 12:15:11,811 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 12:15:11,812 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 12:15:11,813 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 12:15:11,814 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 12:15:11,815 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 12:15:11,816 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 12:15:11,816 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 12:15:11,816 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 12:15:11,817 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 12:15:11,819 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 12:15:11,820 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 [2020-09-21 12:15:11,868 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 12:15:11,869 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 12:15:11,871 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 12:15:11,871 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 12:15:11,871 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 12:15:11,872 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 12:15:11,872 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 12:15:11,872 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 12:15:11,872 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 12:15:11,873 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 12:15:11,874 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 12:15:11,874 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 12:15:11,874 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 12:15:11,875 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 12:15:11,875 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 12:15:11,875 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 12:15:11,876 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 12:15:11,876 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 12:15:11,876 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 12:15:11,876 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 12:15:11,876 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 12:15:11,877 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 12:15:11,877 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 12:15:11,877 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 12:15:11,877 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 12:15:11,878 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 12:15:11,878 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 12:15:11,878 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 12:15:11,878 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 12:15:11,878 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.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=1000;interpolation-heuristic=SMALLEST;log-additional-information=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=1000;interpolation-heuristic=SMALLEST;log-additional-information=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=1000;interpolation-heuristic=SMALLEST;log-additional-information=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=1000;interpolation-heuristic=SMALLEST;log-additional-information=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=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-21 12:15:12,320 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 12:15:12,346 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 12:15:12,353 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 12:15:12,355 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 12:15:12,355 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 12:15:12,357 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product40.cil.c [2020-09-21 12:15:12,457 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e4490d78f/ba51023ddadd454197af801180cae3e4/FLAGe5ac9004c [2020-09-21 12:15:13,099 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 12:15:13,102 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product40.cil.c [2020-09-21 12:15:13,120 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e4490d78f/ba51023ddadd454197af801180cae3e4/FLAGe5ac9004c [2020-09-21 12:15:13,349 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e4490d78f/ba51023ddadd454197af801180cae3e4 [2020-09-21 12:15:13,364 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 12:15:13,370 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 12:15:13,372 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 12:15:13,372 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 12:15:13,377 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 12:15:13,378 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:15:13" (1/1) ... [2020-09-21 12:15:13,382 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51a556b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:15:13, skipping insertion in model container [2020-09-21 12:15:13,383 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:15:13" (1/1) ... [2020-09-21 12:15:13,392 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 12:15:13,446 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 12:15:13,966 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:15:13,988 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 12:15:14,100 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:15:14,138 INFO L208 MainTranslator]: Completed translation [2020-09-21 12:15:14,138 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:15:14 WrapperNode [2020-09-21 12:15:14,139 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 12:15:14,139 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 12:15:14,140 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 12:15:14,140 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 12:15:14,154 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:15:14" (1/1) ... [2020-09-21 12:15:14,154 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:15:14" (1/1) ... [2020-09-21 12:15:14,176 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:15:14" (1/1) ... [2020-09-21 12:15:14,176 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:15:14" (1/1) ... [2020-09-21 12:15:14,210 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:15:14" (1/1) ... [2020-09-21 12:15:14,221 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:15:14" (1/1) ... [2020-09-21 12:15:14,227 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:15:14" (1/1) ... [2020-09-21 12:15:14,238 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 12:15:14,243 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 12:15:14,243 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 12:15:14,243 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 12:15:14,244 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:15:14" (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 [2020-09-21 12:15:14,321 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 12:15:14,323 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 12:15:14,323 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-21 12:15:14,323 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-21 12:15:14,323 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-21 12:15:14,323 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-21 12:15:14,323 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-09-21 12:15:14,323 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-21 12:15:14,324 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-21 12:15:14,324 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-21 12:15:14,325 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-21 12:15:14,325 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-21 12:15:14,325 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-21 12:15:14,325 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-09-21 12:15:14,325 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-09-21 12:15:14,326 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-09-21 12:15:14,327 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-21 12:15:14,327 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-21 12:15:14,327 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-21 12:15:14,327 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-21 12:15:14,328 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-21 12:15:14,328 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 12:15:14,328 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-21 12:15:14,328 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-21 12:15:14,329 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-21 12:15:14,329 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-21 12:15:14,330 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-21 12:15:14,330 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-21 12:15:14,330 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-09-21 12:15:14,331 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-21 12:15:14,331 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-21 12:15:14,331 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-21 12:15:14,331 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-21 12:15:14,331 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-21 12:15:14,331 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-21 12:15:14,331 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-09-21 12:15:14,332 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-21 12:15:14,332 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-21 12:15:14,332 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-21 12:15:14,332 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-21 12:15:14,332 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 12:15:14,332 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 12:15:14,333 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-21 12:15:14,333 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-21 12:15:14,333 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-21 12:15:14,333 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-09-21 12:15:14,333 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-09-21 12:15:14,333 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-21 12:15:14,334 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-21 12:15:14,334 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-21 12:15:14,334 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-21 12:15:14,334 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-21 12:15:14,335 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-21 12:15:14,335 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-09-21 12:15:14,335 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-21 12:15:14,335 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-21 12:15:14,336 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-21 12:15:14,336 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-21 12:15:14,336 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-09-21 12:15:14,336 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-21 12:15:14,336 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-21 12:15:14,336 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-09-21 12:15:14,336 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-09-21 12:15:14,337 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-21 12:15:14,337 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-21 12:15:14,337 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-21 12:15:14,337 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-21 12:15:14,337 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-21 12:15:14,337 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-21 12:15:14,337 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-21 12:15:14,338 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-21 12:15:14,339 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-21 12:15:14,339 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 12:15:14,339 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-21 12:15:14,340 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-21 12:15:14,341 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-21 12:15:14,341 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-21 12:15:14,341 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-21 12:15:14,341 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-21 12:15:14,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-21 12:15:14,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-21 12:15:14,341 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-21 12:15:14,342 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-21 12:15:14,343 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-21 12:15:14,343 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-21 12:15:14,343 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-21 12:15:14,343 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-21 12:15:14,343 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-21 12:15:14,343 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-21 12:15:14,343 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-21 12:15:14,344 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-21 12:15:14,344 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 12:15:14,344 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-21 12:15:14,344 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 12:15:15,383 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 12:15:15,383 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-21 12:15:15,389 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:15:15 BoogieIcfgContainer [2020-09-21 12:15:15,390 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 12:15:15,391 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 12:15:15,391 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 12:15:15,395 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 12:15:15,395 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 12:15:13" (1/3) ... [2020-09-21 12:15:15,396 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@263d05f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:15:15, skipping insertion in model container [2020-09-21 12:15:15,396 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:15:14" (2/3) ... [2020-09-21 12:15:15,397 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@263d05f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:15:15, skipping insertion in model container [2020-09-21 12:15:15,397 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:15:15" (3/3) ... [2020-09-21 12:15:15,399 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product40.cil.c [2020-09-21 12:15:15,412 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 12:15:15,423 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 12:15:15,445 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 12:15:15,473 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 12:15:15,473 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 12:15:15,473 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 12:15:15,473 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 12:15:15,473 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 12:15:15,473 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 12:15:15,473 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 12:15:15,474 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 12:15:15,502 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states. [2020-09-21 12:15:15,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-09-21 12:15:15,514 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:15:15,515 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:15:15,516 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:15:15,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:15:15,523 INFO L82 PathProgramCache]: Analyzing trace with hash -656044244, now seen corresponding path program 1 times [2020-09-21 12:15:15,534 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:15:15,535 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1506129168] [2020-09-21 12:15:15,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:15:15,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:15,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:16,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:16,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:16,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-21 12:15:16,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:15:16,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1046 [2020-09-21 12:15:16,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:16,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:16,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-21 12:15:16,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:16,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-21 12:15:17,365 WARN L193 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 12:15:17,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:15:17,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:17,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:17,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:17,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:17,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:17,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-09-21 12:15:17,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:17,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:17,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:17,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:17,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:17,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:15:17,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:17,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:17,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:17,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:15:17,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:17,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:15:17,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:17,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:17,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:17,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:17,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:17,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:15:17,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:17,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:17,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:17,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:15:17,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:17,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:15:17,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:17,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:17,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:17,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:17,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:17,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:15:17,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:17,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:17,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:17,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:17,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:17,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-21 12:15:17,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:17,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:17,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:17,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:17,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:17,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:15:17,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:17,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:17,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:17,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:15:17,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:17,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-21 12:15:17,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:17,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:17,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:17,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:17,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:17,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-09-21 12:15:17,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:17,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:17,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:17,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:17,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:17,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:15:17,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:17,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:17,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:15:17,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:17,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:15:17,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-09-21 12:15:17,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:17,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:17,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:17,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:17,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:17,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-21 12:15:17,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:17,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:17,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:15:17,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:17,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:17,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:15:17,647 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1506129168] [2020-09-21 12:15:17,649 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:15:17,649 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 12:15:17,650 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248605417] [2020-09-21 12:15:17,659 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 12:15:17,660 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:15:17,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 12:15:17,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 12:15:17,682 INFO L87 Difference]: Start difference. First operand 179 states. Second operand 3 states. [2020-09-21 12:15:18,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:15:18,955 INFO L93 Difference]: Finished difference Result 316 states and 411 transitions. [2020-09-21 12:15:18,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 12:15:18,958 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-09-21 12:15:18,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:15:18,977 INFO L225 Difference]: With dead ends: 316 [2020-09-21 12:15:18,977 INFO L226 Difference]: Without dead ends: 171 [2020-09-21 12:15:18,985 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 12:15:19,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-09-21 12:15:19,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 136. [2020-09-21 12:15:19,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-09-21 12:15:19,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 159 transitions. [2020-09-21 12:15:19,103 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 159 transitions. Word has length 46 [2020-09-21 12:15:19,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:15:19,104 INFO L479 AbstractCegarLoop]: Abstraction has 136 states and 159 transitions. [2020-09-21 12:15:19,104 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 12:15:19,104 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 159 transitions. [2020-09-21 12:15:19,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-09-21 12:15:19,112 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:15:19,112 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:15:19,115 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 12:15:19,115 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:15:19,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:15:19,120 INFO L82 PathProgramCache]: Analyzing trace with hash 679222766, now seen corresponding path program 1 times [2020-09-21 12:15:19,120 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:15:19,121 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [713638957] [2020-09-21 12:15:19,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:15:19,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:19,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:19,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:20,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:20,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:20,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-21 12:15:20,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:15:20,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1509 [2020-09-21 12:15:20,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:20,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:15:20,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-09-21 12:15:20,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-21 12:15:20,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-21 12:15:21,114 WARN L193 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 12:15:21,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:15:21,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:21,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:21,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:21,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:21,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:21,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-09-21 12:15:21,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:21,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:21,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:21,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:21,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:15:21,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:15:21,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:21,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:21,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:21,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:15:21,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:21,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-21 12:15:21,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:21,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:21,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:21,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:21,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:15:21,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:15:21,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:21,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:21,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:21,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:15:21,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:21,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:15:21,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:21,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:21,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:21,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:21,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:15:21,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:15:21,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:21,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:21,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:21,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:21,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:21,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:15:21,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:21,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:21,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:21,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:21,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:15:21,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:15:21,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:21,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:21,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:21,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:15:21,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:21,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-21 12:15:21,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:21,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:21,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:21,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:21,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:15:21,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-21 12:15:21,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:21,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:21,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:21,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:21,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:21,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-21 12:15:21,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:21,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:21,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:15:21,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:21,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-21 12:15:21,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-21 12:15:21,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:21,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:21,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:21,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:21,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:21,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:15:21,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:21,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:21,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:15:21,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:21,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:21,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:15:21,418 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [713638957] [2020-09-21 12:15:21,418 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:15:21,419 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 12:15:21,419 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222781758] [2020-09-21 12:15:21,427 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 12:15:21,427 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:15:21,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 12:15:21,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 12:15:21,435 INFO L87 Difference]: Start difference. First operand 136 states and 159 transitions. Second operand 4 states. [2020-09-21 12:15:21,944 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 12:15:22,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:15:22,848 INFO L93 Difference]: Finished difference Result 239 states and 290 transitions. [2020-09-21 12:15:22,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:15:22,849 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-09-21 12:15:22,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:15:22,855 INFO L225 Difference]: With dead ends: 239 [2020-09-21 12:15:22,855 INFO L226 Difference]: Without dead ends: 155 [2020-09-21 12:15:22,860 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:15:22,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-09-21 12:15:22,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 127. [2020-09-21 12:15:22,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-09-21 12:15:22,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 147 transitions. [2020-09-21 12:15:22,925 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 147 transitions. Word has length 47 [2020-09-21 12:15:22,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:15:22,925 INFO L479 AbstractCegarLoop]: Abstraction has 127 states and 147 transitions. [2020-09-21 12:15:22,925 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 12:15:22,926 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 147 transitions. [2020-09-21 12:15:22,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-21 12:15:22,934 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:15:22,934 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:15:22,934 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 12:15:22,934 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:15:22,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:15:22,935 INFO L82 PathProgramCache]: Analyzing trace with hash 496169114, now seen corresponding path program 1 times [2020-09-21 12:15:22,935 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:15:22,935 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2087354062] [2020-09-21 12:15:22,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:15:22,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:23,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:23,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:24,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:24,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-21 12:15:24,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:15:24,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1149 [2020-09-21 12:15:24,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:24,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-21 12:15:24,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:15:24,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-21 12:15:24,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:24,545 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 12:15:24,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:15:24,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:24,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:24,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:24,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:24,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:24,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-09-21 12:15:24,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:24,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:15:24,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:24,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 12:15:24,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:15:24,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:15:24,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:24,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:24,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:24,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:15:24,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:24,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:15:24,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:24,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:15:24,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:24,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:15:24,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:15:24,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:15:24,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:24,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:24,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:24,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:15:24,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:24,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:15:24,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:24,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:15:24,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:24,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:15:24,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:15:24,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:15:24,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:24,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:24,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:24,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:24,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:24,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 12:15:24,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:24,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:15:24,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:24,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:15:24,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:15:24,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:15:24,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:24,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:24,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:24,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:15:24,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:24,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:15:24,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:24,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:15:24,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:24,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:15:24,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:15:24,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-09-21 12:15:24,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:24,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:24,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:24,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:24,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:24,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:15:24,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:24,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:24,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:15:24,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:24,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:15:24,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-21 12:15:24,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:24,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:24,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:24,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:24,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:24,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:15:24,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:24,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:24,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:15:24,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:24,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:15:24,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:15:24,821 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2087354062] [2020-09-21 12:15:24,822 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:15:24,822 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 12:15:24,822 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22967792] [2020-09-21 12:15:24,823 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 12:15:24,823 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:15:24,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 12:15:24,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 12:15:24,824 INFO L87 Difference]: Start difference. First operand 127 states and 147 transitions. Second operand 4 states. [2020-09-21 12:15:25,250 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 12:15:27,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:15:27,581 INFO L93 Difference]: Finished difference Result 373 states and 457 transitions. [2020-09-21 12:15:27,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:15:27,583 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 52 [2020-09-21 12:15:27,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:15:27,587 INFO L225 Difference]: With dead ends: 373 [2020-09-21 12:15:27,587 INFO L226 Difference]: Without dead ends: 270 [2020-09-21 12:15:27,589 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:15:27,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2020-09-21 12:15:27,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 220. [2020-09-21 12:15:27,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2020-09-21 12:15:27,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 261 transitions. [2020-09-21 12:15:27,690 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 261 transitions. Word has length 52 [2020-09-21 12:15:27,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:15:27,691 INFO L479 AbstractCegarLoop]: Abstraction has 220 states and 261 transitions. [2020-09-21 12:15:27,691 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 12:15:27,692 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 261 transitions. [2020-09-21 12:15:27,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-09-21 12:15:27,693 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:15:27,693 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:15:27,694 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 12:15:27,694 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:15:27,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:15:27,695 INFO L82 PathProgramCache]: Analyzing trace with hash 987448314, now seen corresponding path program 1 times [2020-09-21 12:15:27,695 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:15:27,695 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1948612825] [2020-09-21 12:15:27,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:15:27,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:27,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:28,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:28,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-21 12:15:28,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:28,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1032 [2020-09-21 12:15:28,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:28,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-21 12:15:28,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:15:28,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-21 12:15:28,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:15:29,189 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 12:15:29,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:15:29,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:29,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:29,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:29,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:29,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:29,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-09-21 12:15:29,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:29,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:15:29,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:29,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 12:15:29,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:29,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:15:29,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:29,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:29,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:29,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:15:29,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:29,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:15:29,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:29,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:15:29,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:29,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:15:29,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:29,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:15:29,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:29,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:29,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:29,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:15:29,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:29,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:15:29,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:29,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:15:29,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:29,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:15:29,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:29,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:15:29,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:29,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:29,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:29,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:29,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:29,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:15:29,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:29,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:15:29,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:29,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:15:29,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:29,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:15:29,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:29,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:29,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:29,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:15:29,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:29,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:15:29,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:29,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:15:29,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:29,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:15:29,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:29,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-21 12:15:29,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:29,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:29,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:29,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:15:29,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:29,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 12:15:29,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:29,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:15:29,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:29,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 12:15:29,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:29,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-21 12:15:29,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:29,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:29,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:29,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:29,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:29,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-21 12:15:29,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:29,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:15:29,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:29,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:15:29,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:15:29,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-09-21 12:15:29,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:29,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:29,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:29,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:29,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:29,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:15:29,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:29,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:29,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:15:29,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:29,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:29,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:15:29,494 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1948612825] [2020-09-21 12:15:29,494 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:15:29,494 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-21 12:15:29,495 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762675735] [2020-09-21 12:15:29,495 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-21 12:15:29,495 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:15:29,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-21 12:15:29,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-21 12:15:29,496 INFO L87 Difference]: Start difference. First operand 220 states and 261 transitions. Second operand 8 states. [2020-09-21 12:15:29,956 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 12:15:31,132 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 12:15:31,524 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-21 12:15:31,912 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-21 12:15:32,229 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 12:15:32,779 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 12:15:33,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:15:33,832 INFO L93 Difference]: Finished difference Result 683 states and 892 transitions. [2020-09-21 12:15:33,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-21 12:15:33,833 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2020-09-21 12:15:33,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:15:33,839 INFO L225 Difference]: With dead ends: 683 [2020-09-21 12:15:33,840 INFO L226 Difference]: Without dead ends: 487 [2020-09-21 12:15:33,842 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-09-21 12:15:33,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487 states. [2020-09-21 12:15:33,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487 to 419. [2020-09-21 12:15:33,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 419 states. [2020-09-21 12:15:33,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 507 transitions. [2020-09-21 12:15:33,969 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 507 transitions. Word has length 57 [2020-09-21 12:15:33,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:15:33,970 INFO L479 AbstractCegarLoop]: Abstraction has 419 states and 507 transitions. [2020-09-21 12:15:33,970 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-21 12:15:33,970 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 507 transitions. [2020-09-21 12:15:33,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-09-21 12:15:33,973 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:15:33,973 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:15:33,973 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-21 12:15:33,973 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:15:33,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:15:33,974 INFO L82 PathProgramCache]: Analyzing trace with hash 563810432, now seen corresponding path program 1 times [2020-09-21 12:15:33,974 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:15:33,974 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1026428341] [2020-09-21 12:15:33,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:15:34,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:34,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:35,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:35,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-09-21 12:15:35,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:35,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1001 [2020-09-21 12:15:35,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:35,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-21 12:15:35,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:15:35,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-21 12:15:35,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:15:35,333 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 12:15:35,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:15:35,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:35,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:35,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:35,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:35,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:35,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-09-21 12:15:35,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:35,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:15:35,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:35,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 12:15:35,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:35,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:15:35,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:35,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:35,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:35,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:15:35,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:35,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:15:35,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:35,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:15:35,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:35,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:15:35,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:35,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:15:35,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:35,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:35,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:35,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:15:35,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:35,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:15:35,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:35,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:15:35,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:35,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:15:35,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:35,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:15:35,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:35,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:35,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:35,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:35,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:35,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:15:35,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:35,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:15:35,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:35,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:15:35,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:35,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:15:35,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:35,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:35,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:35,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:15:35,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:35,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:15:35,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:35,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:15:35,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:35,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:15:35,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:35,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-21 12:15:35,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:35,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:35,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:35,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:35,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:35,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-21 12:15:35,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:35,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:15:35,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-21 12:15:35,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 12:15:35,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:35,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-21 12:15:35,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:35,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:35,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:35,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:15:35,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:35,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:15:35,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:35,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:15:35,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:35,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 12:15:35,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:35,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-21 12:15:35,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:35,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:35,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:35,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:35,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:35,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 12:15:35,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:35,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:15:35,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:35,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:15:35,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:35,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-09-21 12:15:35,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:35,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:35,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:35,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:35,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:35,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:15:35,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:35,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:35,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:15:35,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:35,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:35,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:15:35,653 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1026428341] [2020-09-21 12:15:35,654 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:15:35,654 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-21 12:15:35,654 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165372333] [2020-09-21 12:15:35,654 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-21 12:15:35,655 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:15:35,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-21 12:15:35,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-09-21 12:15:35,655 INFO L87 Difference]: Start difference. First operand 419 states and 507 transitions. Second operand 11 states. [2020-09-21 12:15:36,086 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 12:15:36,839 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 12:15:37,784 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 12:15:38,205 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 12:15:38,625 WARN L193 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-21 12:15:39,040 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 12:15:39,423 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 12:15:39,902 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 12:15:40,279 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-21 12:15:40,601 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 12:15:43,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:15:43,074 INFO L93 Difference]: Finished difference Result 1147 states and 1535 transitions. [2020-09-21 12:15:43,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-09-21 12:15:43,074 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 61 [2020-09-21 12:15:43,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:15:43,081 INFO L225 Difference]: With dead ends: 1147 [2020-09-21 12:15:43,082 INFO L226 Difference]: Without dead ends: 925 [2020-09-21 12:15:43,084 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=186, Invalid=626, Unknown=0, NotChecked=0, Total=812 [2020-09-21 12:15:43,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 925 states. [2020-09-21 12:15:43,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 925 to 767. [2020-09-21 12:15:43,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 767 states. [2020-09-21 12:15:43,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 767 states to 767 states and 920 transitions. [2020-09-21 12:15:43,267 INFO L78 Accepts]: Start accepts. Automaton has 767 states and 920 transitions. Word has length 61 [2020-09-21 12:15:43,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:15:43,268 INFO L479 AbstractCegarLoop]: Abstraction has 767 states and 920 transitions. [2020-09-21 12:15:43,268 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-21 12:15:43,268 INFO L276 IsEmpty]: Start isEmpty. Operand 767 states and 920 transitions. [2020-09-21 12:15:43,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-09-21 12:15:43,271 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:15:43,272 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:15:43,272 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-21 12:15:43,272 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:15:43,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:15:43,272 INFO L82 PathProgramCache]: Analyzing trace with hash -1158385600, now seen corresponding path program 1 times [2020-09-21 12:15:43,273 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:15:43,273 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1479517742] [2020-09-21 12:15:43,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:15:43,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:43,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:43,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:44,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:44,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-09-21 12:15:44,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:15:44,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1001 [2020-09-21 12:15:44,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:44,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:15:44,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-09-21 12:15:44,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 12:15:44,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:44,592 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 12:15:44,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:15:44,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:44,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:44,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:44,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:44,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:44,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-09-21 12:15:44,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:44,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:44,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:44,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:44,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:44,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:15:44,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:44,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:44,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:44,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:15:44,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:44,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:15:44,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:44,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:44,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:44,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:44,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:44,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:15:44,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:44,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:44,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:44,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:15:44,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:44,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:15:44,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:44,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:44,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:44,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:44,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:44,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:15:44,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:44,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:44,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:44,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:44,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:44,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:15:44,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:44,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:44,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:44,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:44,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:44,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:15:44,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:44,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:44,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:44,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:15:44,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:44,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:15:44,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:44,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:44,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:44,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:44,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:44,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-21 12:15:44,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:44,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:44,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:44,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:15:44,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:44,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 12:15:44,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:44,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:15:44,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:44,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 12:15:44,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:44,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-21 12:15:44,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:44,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:44,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:44,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:44,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:44,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:15:44,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:44,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:44,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:15:44,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:44,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:15:44,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-21 12:15:44,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:44,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:44,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:44,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:44,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:44,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:15:44,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:44,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:44,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:15:44,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:44,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:15:44,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-09-21 12:15:44,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:44,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:44,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:44,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:44,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:44,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:15:44,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:44,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:44,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:15:44,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:44,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:15:44,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:15:44,786 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1479517742] [2020-09-21 12:15:44,788 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:15:44,788 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-21 12:15:44,789 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989106433] [2020-09-21 12:15:44,790 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-21 12:15:44,790 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:15:44,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-21 12:15:44,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-21 12:15:44,792 INFO L87 Difference]: Start difference. First operand 767 states and 920 transitions. Second operand 6 states. [2020-09-21 12:15:45,257 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 12:15:47,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:15:47,366 INFO L93 Difference]: Finished difference Result 1931 states and 2460 transitions. [2020-09-21 12:15:47,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-21 12:15:47,367 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 61 [2020-09-21 12:15:47,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:15:47,376 INFO L225 Difference]: With dead ends: 1931 [2020-09-21 12:15:47,376 INFO L226 Difference]: Without dead ends: 1188 [2020-09-21 12:15:47,379 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-09-21 12:15:47,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1188 states. [2020-09-21 12:15:47,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1188 to 1083. [2020-09-21 12:15:47,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1083 states. [2020-09-21 12:15:47,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1083 states to 1083 states and 1299 transitions. [2020-09-21 12:15:47,574 INFO L78 Accepts]: Start accepts. Automaton has 1083 states and 1299 transitions. Word has length 61 [2020-09-21 12:15:47,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:15:47,574 INFO L479 AbstractCegarLoop]: Abstraction has 1083 states and 1299 transitions. [2020-09-21 12:15:47,574 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-21 12:15:47,575 INFO L276 IsEmpty]: Start isEmpty. Operand 1083 states and 1299 transitions. [2020-09-21 12:15:47,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-09-21 12:15:47,579 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:15:47,579 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:15:47,580 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-21 12:15:47,580 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:15:47,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:15:47,580 INFO L82 PathProgramCache]: Analyzing trace with hash -79561378, now seen corresponding path program 1 times [2020-09-21 12:15:47,581 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:15:47,581 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [761337759] [2020-09-21 12:15:47,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:15:47,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:47,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:47,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:48,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:48,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:48,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-09-21 12:15:48,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:15:48,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1002 [2020-09-21 12:15:48,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:48,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:15:48,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-09-21 12:15:48,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 12:15:48,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:48,876 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 12:15:48,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:15:48,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:48,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:48,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:48,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:48,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:48,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-09-21 12:15:48,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:48,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:48,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:48,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:48,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:48,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:15:48,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:48,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:48,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:48,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:15:48,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:48,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:15:48,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:48,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:48,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:48,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:48,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:15:48,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:15:48,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:48,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:48,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:48,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:15:48,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:48,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:15:48,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:48,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:48,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:48,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:48,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:15:48,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:15:48,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:48,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:48,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:48,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:48,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:48,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:15:48,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:48,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:48,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:48,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:48,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:48,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:15:48,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:48,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:48,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:48,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:15:48,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:48,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:15:48,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:48,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:48,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:48,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:48,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:15:48,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-21 12:15:48,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:49,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:49,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:49,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:15:49,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:49,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:15:49,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:49,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:15:49,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:49,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-21 12:15:49,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:49,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-09-21 12:15:49,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:49,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:49,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:49,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:49,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-09-21 12:15:49,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:15:49,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-09-21 12:15:49,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:49,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:15:49,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-21 12:15:49,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-21 12:15:49,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:15:49,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:15:49,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:49,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:49,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:49,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:49,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-21 12:15:49,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:15:49,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-09-21 12:15:49,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:49,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:15:49,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:49,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-21 12:15:49,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-21 12:15:49,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:15:49,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:49,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:49,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:49,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:49,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-21 12:15:49,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:15:49,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-09-21 12:15:49,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:49,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:49,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:49,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:49,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:49,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:15:49,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:49,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:49,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:49,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:49,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-21 12:15:49,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:15:49,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-21 12:15:49,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:49,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:49,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:49,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:49,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:49,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:15:49,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:49,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:49,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:49,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:15:49,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:49,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:15:49,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:49,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:49,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:49,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:49,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:49,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 12:15:49,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:49,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:49,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:49,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:49,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:49,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:15:49,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:49,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:49,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:49,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:49,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:49,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-21 12:15:49,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:49,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:49,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:49,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-21 12:15:49,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:49,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-21 12:15:49,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:49,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:15:49,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:49,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-21 12:15:49,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:49,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:15:49,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:49,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:49,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:49,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:49,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:49,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:15:49,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:49,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:49,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:49,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:49,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:49,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-09-21 12:15:49,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:49,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:49,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:49,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:49,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:49,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:15:49,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:49,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:49,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:15:49,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:49,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:49,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-21 12:15:49,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:49,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:49,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:49,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:49,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:49,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:15:49,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:49,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:49,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:15:49,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:49,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:49,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-09-21 12:15:49,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:49,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:49,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:49,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:49,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:49,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:15:49,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:49,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:49,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:15:49,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:49,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:49,518 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-21 12:15:49,519 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [761337759] [2020-09-21 12:15:49,519 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:15:49,519 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-21 12:15:49,522 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497104754] [2020-09-21 12:15:49,523 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-21 12:15:49,523 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:15:49,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-21 12:15:49,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-09-21 12:15:49,523 INFO L87 Difference]: Start difference. First operand 1083 states and 1299 transitions. Second operand 9 states. [2020-09-21 12:15:49,938 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 12:15:50,670 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 12:15:53,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:15:53,112 INFO L93 Difference]: Finished difference Result 1938 states and 2381 transitions. [2020-09-21 12:15:53,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-21 12:15:53,113 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 113 [2020-09-21 12:15:53,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:15:53,120 INFO L225 Difference]: With dead ends: 1938 [2020-09-21 12:15:53,120 INFO L226 Difference]: Without dead ends: 879 [2020-09-21 12:15:53,124 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=114, Invalid=306, Unknown=0, NotChecked=0, Total=420 [2020-09-21 12:15:53,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 879 states. [2020-09-21 12:15:53,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 879 to 749. [2020-09-21 12:15:53,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 749 states. [2020-09-21 12:15:53,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 749 states to 749 states and 878 transitions. [2020-09-21 12:15:53,245 INFO L78 Accepts]: Start accepts. Automaton has 749 states and 878 transitions. Word has length 113 [2020-09-21 12:15:53,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:15:53,245 INFO L479 AbstractCegarLoop]: Abstraction has 749 states and 878 transitions. [2020-09-21 12:15:53,245 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-21 12:15:53,246 INFO L276 IsEmpty]: Start isEmpty. Operand 749 states and 878 transitions. [2020-09-21 12:15:53,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-09-21 12:15:53,250 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:15:53,250 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:15:53,250 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-21 12:15:53,250 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:15:53,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:15:53,251 INFO L82 PathProgramCache]: Analyzing trace with hash -1766790552, now seen corresponding path program 1 times [2020-09-21 12:15:53,251 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:15:53,251 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1254918439] [2020-09-21 12:15:53,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:15:53,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:53,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:53,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:54,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:54,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-09-21 12:15:54,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:15:54,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1003 [2020-09-21 12:15:54,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:54,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:15:54,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-09-21 12:15:54,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:15:54,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:54,569 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 12:15:54,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:15:54,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:54,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:54,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:54,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:54,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:54,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-09-21 12:15:54,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:54,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:54,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:54,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:54,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:54,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:15:54,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:54,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:54,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:54,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:15:54,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:54,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:15:54,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:54,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:54,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:54,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:54,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:54,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:15:54,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:54,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:54,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:54,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:15:54,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:54,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:15:54,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:54,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:54,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:54,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:54,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:54,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:15:54,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:54,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:54,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:54,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:54,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:54,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:15:54,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:54,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:54,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:54,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:54,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:54,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:15:54,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:54,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:54,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:54,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:15:54,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:54,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:15:54,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:54,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:54,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:54,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:54,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:15:54,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-21 12:15:54,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:54,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:54,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:54,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-09-21 12:15:54,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:54,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-09-21 12:15:54,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:54,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:15:54,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-21 12:15:54,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:15:54,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:15:54,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:15:54,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:54,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:54,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:54,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-21 12:15:54,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:54,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-09-21 12:15:54,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:54,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:15:54,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-21 12:15:54,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:15:54,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:54,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:15:54,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:54,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:54,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:54,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-21 12:15:54,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:54,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-21 12:15:54,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:54,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:15:54,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-21 12:15:54,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:15:54,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:54,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:15:54,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:54,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:54,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:54,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-21 12:15:54,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:54,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-21 12:15:54,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:54,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:15:54,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-21 12:15:54,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:15:54,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:54,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:15:54,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:54,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:54,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:54,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:15:54,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:54,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:15:54,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:54,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 12:15:54,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:54,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:15:54,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:54,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 12:15:54,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:54,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:54,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:54,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:54,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:54,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:15:54,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:54,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:54,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:15:54,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:54,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:15:54,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-21 12:15:54,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:54,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:54,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:54,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-21 12:15:54,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:54,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 12:15:54,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:54,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:54,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-21 12:15:54,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:54,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:54,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:15:54,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:54,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:54,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:54,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:54,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:54,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:15:54,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:54,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:54,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:54,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:54,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:55,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-21 12:15:55,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:55,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:55,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:55,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:55,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:55,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:15:55,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:55,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:55,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:15:55,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:55,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:55,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-09-21 12:15:55,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:55,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:55,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:55,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-21 12:15:55,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:55,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-21 12:15:55,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:55,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:55,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-09-21 12:15:55,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:55,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:55,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:15:55,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:55,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:55,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:55,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-09-21 12:15:55,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:55,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:15:55,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:55,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:55,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:55,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:55,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:55,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:15:55,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:55,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:55,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:55,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:55,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:55,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:15:55,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:55,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:55,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:55,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:55,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:55,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-09-21 12:15:55,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:55,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:55,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:55,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:55,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:55,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:15:55,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:55,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:55,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:55,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:55,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:55,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-09-21 12:15:55,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:55,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:55,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:55,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:55,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:55,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:15:55,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:55,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:55,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:15:55,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:55,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:55,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-09-21 12:15:55,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:55,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:55,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:55,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:55,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:55,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:15:55,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:55,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:55,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:15:55,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:55,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:55,112 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-21 12:15:55,112 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1254918439] [2020-09-21 12:15:55,113 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:15:55,113 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-21 12:15:55,114 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458899148] [2020-09-21 12:15:55,115 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-21 12:15:55,115 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:15:55,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-21 12:15:55,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-09-21 12:15:55,116 INFO L87 Difference]: Start difference. First operand 749 states and 878 transitions. Second operand 9 states. [2020-09-21 12:15:56,387 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 12:15:56,706 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 12:15:57,009 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 12:15:58,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:15:58,081 INFO L93 Difference]: Finished difference Result 1570 states and 1935 transitions. [2020-09-21 12:15:58,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-21 12:15:58,081 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 128 [2020-09-21 12:15:58,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:15:58,089 INFO L225 Difference]: With dead ends: 1570 [2020-09-21 12:15:58,090 INFO L226 Difference]: Without dead ends: 845 [2020-09-21 12:15:58,096 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-09-21 12:15:58,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 845 states. [2020-09-21 12:15:58,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 845 to 753. [2020-09-21 12:15:58,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 753 states. [2020-09-21 12:15:58,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 753 states to 753 states and 880 transitions. [2020-09-21 12:15:58,253 INFO L78 Accepts]: Start accepts. Automaton has 753 states and 880 transitions. Word has length 128 [2020-09-21 12:15:58,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:15:58,253 INFO L479 AbstractCegarLoop]: Abstraction has 753 states and 880 transitions. [2020-09-21 12:15:58,254 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-21 12:15:58,254 INFO L276 IsEmpty]: Start isEmpty. Operand 753 states and 880 transitions. [2020-09-21 12:15:58,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-09-21 12:15:58,256 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:15:58,256 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:15:58,257 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-21 12:15:58,257 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:15:58,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:15:58,257 INFO L82 PathProgramCache]: Analyzing trace with hash 1689143082, now seen corresponding path program 1 times [2020-09-21 12:15:58,257 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:15:58,258 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [328483417] [2020-09-21 12:15:58,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:15:58,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:58,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:58,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:59,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:59,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-09-21 12:15:59,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:15:59,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1017 [2020-09-21 12:15:59,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:59,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:15:59,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-09-21 12:15:59,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 12:15:59,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:15:59,678 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 12:15:59,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:15:59,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:59,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:59,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:59,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:59,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:59,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-09-21 12:15:59,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:59,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:59,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:59,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:59,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:59,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:15:59,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:59,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:59,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:59,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:15:59,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:59,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:15:59,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:59,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:59,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:59,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:59,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:59,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:15:59,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:59,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:59,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:59,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:15:59,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:59,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:15:59,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:59,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:59,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:59,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:59,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:59,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:15:59,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:59,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:59,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:59,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:59,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:59,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:15:59,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:59,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:59,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:59,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:59,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:59,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:15:59,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:59,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:59,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:59,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:15:59,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:59,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:15:59,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:59,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:59,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:59,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:59,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:59,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-21 12:15:59,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:59,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:59,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:59,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-09-21 12:15:59,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:59,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-09-21 12:15:59,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:59,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:15:59,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-09-21 12:15:59,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 12:15:59,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:59,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:15:59,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:59,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:59,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:59,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-21 12:15:59,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:59,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-09-21 12:15:59,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:59,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:15:59,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-21 12:15:59,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 12:15:59,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:59,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:15:59,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:59,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:00,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:00,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-21 12:16:00,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:00,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-09-21 12:16:00,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:00,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:16:00,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-21 12:16:00,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 12:16:00,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:16:00,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:16:00,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:00,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:00,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:00,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-21 12:16:00,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:00,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-21 12:16:00,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:00,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:16:00,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:16:00,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-21 12:16:00,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:16:00,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:16:00,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:00,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:00,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:00,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:16:00,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:00,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:16:00,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:00,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:16:00,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:16:00,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:16:00,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:16:00,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 12:16:00,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:00,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:00,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:00,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:16:00,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:00,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:16:00,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:00,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:16:00,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:16:00,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:16:00,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:16:00,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-21 12:16:00,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:00,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:00,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:00,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-21 12:16:00,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:00,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 12:16:00,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:00,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:16:00,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-21 12:16:00,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:16:00,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:16:00,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:16:00,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:00,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:00,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:00,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:16:00,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:00,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:16:00,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:00,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:16:00,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:16:00,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:16:00,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:16:00,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-21 12:16:00,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:00,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:00,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:00,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:16:00,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:00,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:16:00,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:00,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:16:00,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:16:00,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:16:00,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:16:00,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-09-21 12:16:00,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:00,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:00,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:00,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-21 12:16:00,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:00,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-21 12:16:00,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:00,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:16:00,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-09-21 12:16:00,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:16:00,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:16:00,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:16:00,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:00,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:00,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:00,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-09-21 12:16:00,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:00,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:16:00,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:00,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:16:00,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:16:00,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:16:00,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:16:00,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:16:00,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:00,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:00,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:00,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:16:00,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:00,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:16:00,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:00,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:16:00,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:16:00,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:16:00,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:16:00,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-09-21 12:16:00,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:00,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:00,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:00,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:16:00,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:00,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:16:00,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:00,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:16:00,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:16:00,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:16:00,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:16:00,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-09-21 12:16:00,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:00,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:00,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:00,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:16:00,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:00,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:16:00,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:00,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:16:00,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:16:00,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:16:00,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:16:00,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-09-21 12:16:00,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:00,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:00,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:00,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:16:00,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:00,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:16:00,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:00,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:16:00,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:16:00,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:16:00,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:16:00,282 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-21 12:16:00,283 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [328483417] [2020-09-21 12:16:00,283 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:16:00,283 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-21 12:16:00,284 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629944575] [2020-09-21 12:16:00,284 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-21 12:16:00,284 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:16:00,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-21 12:16:00,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-09-21 12:16:00,285 INFO L87 Difference]: Start difference. First operand 753 states and 880 transitions. Second operand 10 states. [2020-09-21 12:16:01,393 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 12:16:01,706 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 12:16:02,038 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 12:16:02,348 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 190