/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_product63.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 12:16:09,599 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 12:16:09,603 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 12:16:09,646 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 12:16:09,646 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 12:16:09,658 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 12:16:09,660 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 12:16:09,664 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 12:16:09,667 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 12:16:09,671 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 12:16:09,672 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 12:16:09,674 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 12:16:09,675 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 12:16:09,678 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 12:16:09,681 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 12:16:09,683 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 12:16:09,685 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 12:16:09,686 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 12:16:09,688 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 12:16:09,698 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 12:16:09,701 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 12:16:09,702 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 12:16:09,703 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 12:16:09,704 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 12:16:09,707 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 12:16:09,708 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 12:16:09,708 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 12:16:09,711 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 12:16:09,712 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 12:16:09,714 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 12:16:09,715 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 12:16:09,716 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 12:16:09,717 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 12:16:09,718 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 12:16:09,720 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 12:16:09,720 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 12:16:09,721 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 12:16:09,721 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 12:16:09,722 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 12:16:09,723 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 12:16:09,725 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 12:16:09,726 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 12:16:09,774 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 12:16:09,774 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 12:16:09,777 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 12:16:09,777 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 12:16:09,777 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 12:16:09,778 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 12:16:09,778 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 12:16:09,778 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 12:16:09,778 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 12:16:09,779 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 12:16:09,780 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 12:16:09,780 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 12:16:09,780 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 12:16:09,781 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 12:16:09,781 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 12:16:09,781 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 12:16:09,781 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 12:16:09,782 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 12:16:09,782 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 12:16:09,782 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 12:16:09,782 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 12:16:09,782 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 12:16:09,783 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 12:16:09,783 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 12:16:09,783 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 12:16:09,783 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 12:16:09,783 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 12:16:09,784 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 12:16:09,784 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 12:16:09,784 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 12:16:10,216 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 12:16:10,241 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 12:16:10,246 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 12:16:10,248 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 12:16:10,248 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 12:16:10,250 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product63.cil.c [2020-09-21 12:16:10,344 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0f7841411/52f57f4c99bd4c8cae4027d680d26605/FLAGd76b076a0 [2020-09-21 12:16:10,992 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 12:16:10,993 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product63.cil.c [2020-09-21 12:16:11,011 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0f7841411/52f57f4c99bd4c8cae4027d680d26605/FLAGd76b076a0 [2020-09-21 12:16:11,230 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0f7841411/52f57f4c99bd4c8cae4027d680d26605 [2020-09-21 12:16:11,245 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 12:16:11,252 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 12:16:11,256 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 12:16:11,256 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 12:16:11,260 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 12:16:11,262 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:16:11" (1/1) ... [2020-09-21 12:16:11,267 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11967da3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:16:11, skipping insertion in model container [2020-09-21 12:16:11,268 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:16:11" (1/1) ... [2020-09-21 12:16:11,278 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 12:16:11,360 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 12:16:11,836 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:16:11,862 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 12:16:11,954 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:16:11,996 INFO L208 MainTranslator]: Completed translation [2020-09-21 12:16:11,996 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:16:11 WrapperNode [2020-09-21 12:16:11,996 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 12:16:11,997 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 12:16:11,998 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 12:16:11,998 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 12:16:12,014 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:16:11" (1/1) ... [2020-09-21 12:16:12,014 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:16:11" (1/1) ... [2020-09-21 12:16:12,036 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:16:11" (1/1) ... [2020-09-21 12:16:12,037 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:16:11" (1/1) ... [2020-09-21 12:16:12,072 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:16:11" (1/1) ... [2020-09-21 12:16:12,085 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:16:11" (1/1) ... [2020-09-21 12:16:12,091 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:16:11" (1/1) ... [2020-09-21 12:16:12,099 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 12:16:12,100 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 12:16:12,100 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 12:16:12,100 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 12:16:12,102 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:16:11" (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 12:16:12,211 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 12:16:12,212 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 12:16:12,212 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-21 12:16:12,213 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-21 12:16:12,213 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-21 12:16:12,213 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-21 12:16:12,213 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-21 12:16:12,214 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-21 12:16:12,215 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-21 12:16:12,215 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-21 12:16:12,215 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-21 12:16:12,215 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-21 12:16:12,215 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-21 12:16:12,216 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 12:16:12,216 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-21 12:16:12,217 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-21 12:16:12,217 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-21 12:16:12,217 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-21 12:16:12,218 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-09-21 12:16:12,218 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-21 12:16:12,218 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-21 12:16:12,219 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-21 12:16:12,219 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-21 12:16:12,219 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-21 12:16:12,220 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-21 12:16:12,221 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-09-21 12:16:12,221 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-09-21 12:16:12,221 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-21 12:16:12,221 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-21 12:16:12,222 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-21 12:16:12,222 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-09-21 12:16:12,222 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-09-21 12:16:12,222 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-21 12:16:12,222 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2020-09-21 12:16:12,223 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-21 12:16:12,223 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-21 12:16:12,223 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-21 12:16:12,223 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-21 12:16:12,223 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-21 12:16:12,223 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-09-21 12:16:12,224 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-09-21 12:16:12,224 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-09-21 12:16:12,224 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-21 12:16:12,224 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 12:16:12,224 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 12:16:12,225 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-21 12:16:12,225 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-21 12:16:12,225 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-21 12:16:12,225 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-21 12:16:12,225 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-21 12:16:12,225 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-21 12:16:12,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-21 12:16:12,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-21 12:16:12,226 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-21 12:16:12,227 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-21 12:16:12,227 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-21 12:16:12,227 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-21 12:16:12,227 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-21 12:16:12,227 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-21 12:16:12,228 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-21 12:16:12,228 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-21 12:16:12,228 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-21 12:16:12,228 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-21 12:16:12,228 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-21 12:16:12,229 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-21 12:16:12,229 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-21 12:16:12,229 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-21 12:16:12,229 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-21 12:16:12,229 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-21 12:16:12,230 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-21 12:16:12,230 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-21 12:16:12,232 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-21 12:16:12,232 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-21 12:16:12,232 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-21 12:16:12,233 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-21 12:16:12,234 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 12:16:12,234 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-21 12:16:12,234 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-21 12:16:12,234 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-21 12:16:12,234 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-21 12:16:12,234 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-09-21 12:16:12,235 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-21 12:16:12,236 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-21 12:16:12,236 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-21 12:16:12,236 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-09-21 12:16:12,236 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-09-21 12:16:12,236 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-21 12:16:12,237 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-21 12:16:12,237 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-09-21 12:16:12,237 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-21 12:16:12,237 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-21 12:16:12,237 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-09-21 12:16:12,237 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-09-21 12:16:12,238 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-09-21 12:16:12,238 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-09-21 12:16:12,238 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-21 12:16:12,238 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2020-09-21 12:16:12,238 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 12:16:12,238 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-21 12:16:12,238 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 12:16:13,411 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 12:16:13,411 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-21 12:16:13,418 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:16:13 BoogieIcfgContainer [2020-09-21 12:16:13,418 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 12:16:13,419 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 12:16:13,420 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 12:16:13,423 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 12:16:13,424 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 12:16:11" (1/3) ... [2020-09-21 12:16:13,425 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1129be11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:16:13, skipping insertion in model container [2020-09-21 12:16:13,425 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:16:11" (2/3) ... [2020-09-21 12:16:13,425 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1129be11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:16:13, skipping insertion in model container [2020-09-21 12:16:13,426 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:16:13" (3/3) ... [2020-09-21 12:16:13,428 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product63.cil.c [2020-09-21 12:16:13,441 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 12:16:13,451 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 12:16:13,475 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 12:16:13,508 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 12:16:13,509 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 12:16:13,509 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 12:16:13,509 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 12:16:13,509 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 12:16:13,509 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 12:16:13,510 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 12:16:13,510 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 12:16:13,549 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states. [2020-09-21 12:16:13,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-09-21 12:16:13,562 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:16:13,563 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 12:16:13,564 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:16:13,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:16:13,571 INFO L82 PathProgramCache]: Analyzing trace with hash 1593418819, now seen corresponding path program 1 times [2020-09-21 12:16:13,583 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:16:13,584 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1454247929] [2020-09-21 12:16:13,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:16:13,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:14,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:14,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:14,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:14,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-21 12:16:14,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:16:14,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1006 [2020-09-21 12:16:14,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:14,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:16:14,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-21 12:16:14,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:16:14,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 13 [2020-09-21 12:16:15,399 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 12:16:15,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:16:15,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:15,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:15,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:15,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:16:15,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:15,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-09-21 12:16:15,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:15,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:16:15,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:16:15,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:16:15,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:16:15,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:16:15,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:15,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:15,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:15,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:16:15,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:15,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:16:15,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:15,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:16:15,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:16:15,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:16:15,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:16:15,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:16:15,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:15,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:15,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:15,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:16:15,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:15,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:16:15,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:15,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:16:15,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:16:15,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:16:15,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:16:15,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:16:15,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:15,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:15,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:15,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:16:15,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:15,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-21 12:16:15,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:15,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:16:15,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:16:15,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:16:15,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:16:15,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:16:15,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:15,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:15,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:15,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:16:15,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:15,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:16:15,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:15,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:16:15,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:16:15,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:16:15,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:16:15,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-09-21 12:16:15,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:15,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:15,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:15,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:16:15,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:15,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:16:15,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:15,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:16:15,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:16:15,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:16:15,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:16:15,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-09-21 12:16:15,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:15,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:15,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:15,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:16:15,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:15,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-21 12:16:15,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:15,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:16:15,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:16:15,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:16:15,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:16:15,620 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 12:16:15,621 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1454247929] [2020-09-21 12:16:15,624 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:16:15,624 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 12:16:15,625 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945117083] [2020-09-21 12:16:15,633 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 12:16:15,633 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:16:15,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 12:16:15,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 12:16:15,654 INFO L87 Difference]: Start difference. First operand 202 states. Second operand 3 states. [2020-09-21 12:16:17,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:16:17,153 INFO L93 Difference]: Finished difference Result 365 states and 474 transitions. [2020-09-21 12:16:17,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 12:16:17,156 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-09-21 12:16:17,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:16:17,175 INFO L225 Difference]: With dead ends: 365 [2020-09-21 12:16:17,175 INFO L226 Difference]: Without dead ends: 197 [2020-09-21 12:16:17,181 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 12:16:17,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2020-09-21 12:16:17,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 159. [2020-09-21 12:16:17,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-09-21 12:16:17,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 189 transitions. [2020-09-21 12:16:17,322 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 189 transitions. Word has length 46 [2020-09-21 12:16:17,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:16:17,323 INFO L479 AbstractCegarLoop]: Abstraction has 159 states and 189 transitions. [2020-09-21 12:16:17,324 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 12:16:17,327 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 189 transitions. [2020-09-21 12:16:17,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-09-21 12:16:17,338 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:16:17,338 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 12:16:17,338 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 12:16:17,338 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:16:17,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:16:17,339 INFO L82 PathProgramCache]: Analyzing trace with hash 261795935, now seen corresponding path program 1 times [2020-09-21 12:16:17,339 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:16:17,339 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1613209642] [2020-09-21 12:16:17,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:16:17,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:17,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:17,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:18,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:18,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:18,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-21 12:16:18,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:16:18,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1470 [2020-09-21 12:16:18,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:18,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:16:18,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-09-21 12:16:18,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-21 12:16:18,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:16:19,322 WARN L193 SmtUtils]: Spent 380.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 12:16:19,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:16:19,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:19,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:19,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:19,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:16:19,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:19,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-09-21 12:16:19,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:19,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:16:19,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:16:19,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:16:19,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:16:19,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:16:19,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:19,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:19,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:19,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:16:19,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:19,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:16:19,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:19,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:16:19,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:16:19,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:16:19,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:16:19,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:16:19,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:19,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:19,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:19,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:16:19,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:19,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:16:19,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:19,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:16:19,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:16:19,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:16:19,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:16:19,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:16:19,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:19,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:19,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:19,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:16:19,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:19,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:16:19,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:19,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:16:19,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:16:19,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:16:19,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:16:19,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:16:19,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:19,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:19,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:19,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:16:19,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:19,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:16:19,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:19,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:16:19,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:16:19,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:16:19,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:16:19,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-21 12:16:19,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:19,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:19,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:19,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:16:19,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:19,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:16:19,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:19,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:16:19,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:16:19,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:16:19,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:16:19,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-21 12:16:19,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:19,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:19,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:19,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:16:19,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:19,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:16:19,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:19,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:16:19,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:16:19,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:16:19,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:16:19,494 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 12:16:19,494 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1613209642] [2020-09-21 12:16:19,495 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:16:19,495 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 12:16:19,495 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905687873] [2020-09-21 12:16:19,497 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 12:16:19,497 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:16:19,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 12:16:19,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 12:16:19,498 INFO L87 Difference]: Start difference. First operand 159 states and 189 transitions. Second operand 4 states. [2020-09-21 12:16:19,946 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 12:16:21,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:16:21,104 INFO L93 Difference]: Finished difference Result 292 states and 357 transitions. [2020-09-21 12:16:21,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:16:21,105 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-09-21 12:16:21,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:16:21,109 INFO L225 Difference]: With dead ends: 292 [2020-09-21 12:16:21,109 INFO L226 Difference]: Without dead ends: 181 [2020-09-21 12:16:21,111 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 12:16:21,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2020-09-21 12:16:21,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 150. [2020-09-21 12:16:21,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-09-21 12:16:21,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 177 transitions. [2020-09-21 12:16:21,159 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 177 transitions. Word has length 47 [2020-09-21 12:16:21,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:16:21,160 INFO L479 AbstractCegarLoop]: Abstraction has 150 states and 177 transitions. [2020-09-21 12:16:21,160 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 12:16:21,160 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 177 transitions. [2020-09-21 12:16:21,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-21 12:16:21,162 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:16:21,162 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] [2020-09-21 12:16:21,162 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 12:16:21,162 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:16:21,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:16:21,163 INFO L82 PathProgramCache]: Analyzing trace with hash -1299589925, now seen corresponding path program 1 times [2020-09-21 12:16:21,163 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:16:21,163 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1250171944] [2020-09-21 12:16:21,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:16:21,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:21,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:21,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:22,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:22,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-21 12:16:22,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:16:22,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1007 [2020-09-21 12:16:22,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:22,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-21 12:16:22,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:16:22,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-21 12:16:22,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:16:22,543 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 12:16:22,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:16:22,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:22,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:22,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:22,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:16:22,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:22,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-09-21 12:16:22,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:22,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:16:22,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:16:22,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 12:16:22,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:16:22,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:16:22,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:22,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:22,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:22,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:16:22,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:22,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:16:22,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:22,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:16:22,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:16:22,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:16:22,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:16:22,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:16:22,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:22,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:22,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:22,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:16:22,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:22,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:16:22,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:22,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:16:22,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:16:22,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:16:22,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:16:22,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:16:22,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:22,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:22,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:22,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:16:22,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:22,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 12:16:22,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:22,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:16:22,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:16:22,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:16:22,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:16:22,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:16:22,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:22,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:22,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:22,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:16:22,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:22,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:16:22,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:22,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:16:22,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:16:22,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:16:22,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:16:22,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-21 12:16:22,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:22,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:22,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:22,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:16:22,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:22,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:16:22,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:22,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:16:22,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:16:22,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:16:22,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:16:22,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-21 12:16:22,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:22,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:22,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:22,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:16:22,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:22,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:16:22,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:22,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:16:22,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:16:22,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:16:22,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:16:22,825 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 12:16:22,825 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1250171944] [2020-09-21 12:16:22,826 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:16:22,826 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 12:16:22,826 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474717739] [2020-09-21 12:16:22,827 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 12:16:22,827 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:16:22,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 12:16:22,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 12:16:22,828 INFO L87 Difference]: Start difference. First operand 150 states and 177 transitions. Second operand 4 states. [2020-09-21 12:16:23,316 WARN L193 SmtUtils]: Spent 391.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 12:16:25,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:16:25,444 INFO L93 Difference]: Finished difference Result 449 states and 555 transitions. [2020-09-21 12:16:25,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:16:25,446 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-09-21 12:16:25,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:16:25,451 INFO L225 Difference]: With dead ends: 449 [2020-09-21 12:16:25,451 INFO L226 Difference]: Without dead ends: 323 [2020-09-21 12:16:25,453 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 17 SyntacticMatches, 1 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 12:16:25,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2020-09-21 12:16:25,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 270. [2020-09-21 12:16:25,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 270 states. [2020-09-21 12:16:25,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 325 transitions. [2020-09-21 12:16:25,534 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 325 transitions. Word has length 51 [2020-09-21 12:16:25,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:16:25,535 INFO L479 AbstractCegarLoop]: Abstraction has 270 states and 325 transitions. [2020-09-21 12:16:25,535 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 12:16:25,535 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 325 transitions. [2020-09-21 12:16:25,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-09-21 12:16:25,537 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:16:25,537 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 12:16:25,537 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 12:16:25,537 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:16:25,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:16:25,538 INFO L82 PathProgramCache]: Analyzing trace with hash -848411279, now seen corresponding path program 1 times [2020-09-21 12:16:25,538 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:16:25,538 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [421698477] [2020-09-21 12:16:25,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:16:25,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:25,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:26,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:26,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-21 12:16:26,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:26,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1037 [2020-09-21 12:16:26,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:26,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-21 12:16:26,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:16:26,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-21 12:16:26,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:16:26,953 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 12:16:26,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:16:26,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:26,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:27,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:27,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:16:27,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:27,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-09-21 12:16:27,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:27,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:16:27,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:16:27,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 12:16:27,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:16:27,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:16:27,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:27,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:27,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:27,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:16:27,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:27,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:16:27,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:27,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:16:27,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:16:27,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:16:27,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:16:27,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:16:27,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:27,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:27,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:27,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:16:27,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:27,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:16:27,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:27,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:16:27,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:16:27,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:16:27,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:16:27,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:16:27,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:27,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:27,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:27,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:16:27,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:27,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:16:27,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:27,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:16:27,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:16:27,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:16:27,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:16:27,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:16:27,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:27,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:27,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:27,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:16:27,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:27,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:16:27,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:27,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:16:27,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:16:27,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:16:27,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:16:27,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-21 12:16:27,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:27,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:27,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:27,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:16:27,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:27,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:16:27,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:27,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:16:27,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:16:27,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 12:16:27,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:16:27,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-21 12:16:27,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:27,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:27,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:27,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:16:27,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:27,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 12:16:27,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:27,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:16:27,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:16:27,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:16:27,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:16:27,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-09-21 12:16:27,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:27,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:27,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:27,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:16:27,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:27,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:16:27,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:27,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:16:27,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:16:27,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:16:27,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:16:27,205 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 12:16:27,206 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [421698477] [2020-09-21 12:16:27,206 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:16:27,206 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-21 12:16:27,207 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460924907] [2020-09-21 12:16:27,207 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-21 12:16:27,207 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:16:27,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-21 12:16:27,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-21 12:16:27,208 INFO L87 Difference]: Start difference. First operand 270 states and 325 transitions. Second operand 8 states. [2020-09-21 12:16:27,529 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 12:16:28,660 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 12:16:29,111 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-21 12:16:29,479 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-21 12:16:29,786 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 12:16:30,489 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 12:16:31,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:16:31,909 INFO L93 Difference]: Finished difference Result 846 states and 1102 transitions. [2020-09-21 12:16:31,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-21 12:16:31,910 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2020-09-21 12:16:31,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:16:31,915 INFO L225 Difference]: With dead ends: 846 [2020-09-21 12:16:31,916 INFO L226 Difference]: Without dead ends: 600 [2020-09-21 12:16:31,917 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-09-21 12:16:31,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 600 states. [2020-09-21 12:16:32,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 600 to 527. [2020-09-21 12:16:32,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 527 states. [2020-09-21 12:16:32,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 645 transitions. [2020-09-21 12:16:32,097 INFO L78 Accepts]: Start accepts. Automaton has 527 states and 645 transitions. Word has length 57 [2020-09-21 12:16:32,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:16:32,098 INFO L479 AbstractCegarLoop]: Abstraction has 527 states and 645 transitions. [2020-09-21 12:16:32,098 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-21 12:16:32,098 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states and 645 transitions. [2020-09-21 12:16:32,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-09-21 12:16:32,101 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:16:32,101 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 12:16:32,101 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-21 12:16:32,101 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:16:32,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:16:32,102 INFO L82 PathProgramCache]: Analyzing trace with hash -533846889, now seen corresponding path program 1 times [2020-09-21 12:16:32,102 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:16:32,102 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [873136691] [2020-09-21 12:16:32,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:16:32,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:32,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:32,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:33,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:33,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-09-21 12:16:33,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:16:33,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1003 [2020-09-21 12:16:33,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:33,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:16:33,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-09-21 12:16:33,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 12:16:33,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:16:33,394 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 12:16:33,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:16:33,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:33,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:33,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:33,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:16:33,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:33,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-09-21 12:16:33,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:33,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:16:33,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:16:33,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:16:33,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:16:33,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:16:33,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:33,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:33,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:33,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:16:33,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:33,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:16:33,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:33,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:16:33,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:16:33,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:16:33,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:16:33,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:16:33,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:33,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:33,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:33,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:16:33,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:33,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:16:33,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:33,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:16:33,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:16:33,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:16:33,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:16:33,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:16:33,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:33,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:33,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:33,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:16:33,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:33,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:16:33,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:33,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:16:33,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:16:33,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:16:33,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:16:33,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:16:33,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:33,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:33,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:33,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:16:33,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:33,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:16:33,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:33,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:16:33,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:16:33,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:16:33,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:16:33,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-21 12:16:33,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:33,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:33,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:33,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:16:33,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:33,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 12:16:33,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:33,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:16:33,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:16:33,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 12:16:33,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:16:33,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-21 12:16:33,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:33,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:33,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:33,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:16:33,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:33,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:16:33,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:33,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:16:33,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:16:33,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:16:33,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:16:33,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-21 12:16:33,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:33,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:33,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:33,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:16:33,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:33,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:16:33,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:33,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:16:33,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:16:33,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:16:33,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:16:33,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-09-21 12:16:33,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:33,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:33,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:33,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:16:33,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:33,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:16:33,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:33,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:16:33,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:16:33,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:16:33,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:16:33,573 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 12:16:33,574 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [873136691] [2020-09-21 12:16:33,574 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:16:33,574 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-21 12:16:33,575 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147068462] [2020-09-21 12:16:33,575 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-21 12:16:33,575 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:16:33,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-21 12:16:33,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-21 12:16:33,576 INFO L87 Difference]: Start difference. First operand 527 states and 645 transitions. Second operand 6 states. [2020-09-21 12:16:33,887 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 12:16:36,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:16:36,100 INFO L93 Difference]: Finished difference Result 1278 states and 1653 transitions. [2020-09-21 12:16:36,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-21 12:16:36,101 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 61 [2020-09-21 12:16:36,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:16:36,107 INFO L225 Difference]: With dead ends: 1278 [2020-09-21 12:16:36,107 INFO L226 Difference]: Without dead ends: 775 [2020-09-21 12:16:36,110 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-09-21 12:16:36,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 775 states. [2020-09-21 12:16:36,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 775 to 709. [2020-09-21 12:16:36,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 709 states. [2020-09-21 12:16:36,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 709 states to 709 states and 852 transitions. [2020-09-21 12:16:36,287 INFO L78 Accepts]: Start accepts. Automaton has 709 states and 852 transitions. Word has length 61 [2020-09-21 12:16:36,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:16:36,288 INFO L479 AbstractCegarLoop]: Abstraction has 709 states and 852 transitions. [2020-09-21 12:16:36,288 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-21 12:16:36,288 INFO L276 IsEmpty]: Start isEmpty. Operand 709 states and 852 transitions. [2020-09-21 12:16:36,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-09-21 12:16:36,291 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:16:36,291 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 12:16:36,291 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-21 12:16:36,292 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:16:36,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:16:36,292 INFO L82 PathProgramCache]: Analyzing trace with hash 1661770583, now seen corresponding path program 1 times [2020-09-21 12:16:36,292 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:16:36,292 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [445792587] [2020-09-21 12:16:36,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:16:36,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:36,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:37,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:37,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-09-21 12:16:37,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:37,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1026 [2020-09-21 12:16:37,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:37,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-21 12:16:37,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:16:37,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-21 12:16:37,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:16:37,697 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 12:16:37,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:16:37,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:37,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:37,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:37,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:16:37,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:37,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-09-21 12:16:37,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:37,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:16:37,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:16:37,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 12:16:37,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:16:37,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:16:37,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:37,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:37,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:37,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:16:37,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:37,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:16:37,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:37,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:16:37,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:16:37,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:16:37,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:16:37,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:16:37,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:37,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:37,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:37,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:16:37,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:37,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:16:37,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:37,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:16:37,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:16:37,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:16:37,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:16:37,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:16:37,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:37,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:37,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:37,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:16:37,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:37,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 12:16:37,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:37,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:16:37,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:16:37,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:16:37,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:16:37,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:16:37,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:37,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:37,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:37,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:16:37,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:37,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:16:37,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:37,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:16:37,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:16:37,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:16:37,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:16:37,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-21 12:16:37,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:37,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:37,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:37,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:16:37,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:37,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-21 12:16:37,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:37,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:16:37,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-21 12:16:37,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 12:16:37,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:16:38,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-21 12:16:38,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:38,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:38,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:38,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:16:38,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:38,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-21 12:16:38,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:38,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:16:38,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:16:38,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 12:16:38,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:16:38,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-21 12:16:38,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:38,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:38,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:38,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:16:38,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:38,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 12:16:38,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:38,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:16:38,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:16:38,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:16:38,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:16:38,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-09-21 12:16:38,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:38,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:38,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:38,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:16:38,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:38,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:16:38,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:38,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:16:38,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:16:38,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:16:38,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:16:38,075 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 12:16:38,076 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [445792587] [2020-09-21 12:16:38,077 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:16:38,077 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-21 12:16:38,077 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914605208] [2020-09-21 12:16:38,078 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-21 12:16:38,078 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:16:38,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-21 12:16:38,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-09-21 12:16:38,079 INFO L87 Difference]: Start difference. First operand 709 states and 852 transitions. Second operand 11 states. [2020-09-21 12:16:38,442 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 12:16:39,077 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 12:16:39,796 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 12:16:40,139 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 12:16:40,457 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-21 12:16:40,753 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 12:16:41,089 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 12:16:41,426 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-21 12:16:43,412 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 12:16:44,036 WARN L193 SmtUtils]: Spent 521.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 187 [2020-09-21 12:16:44,336 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 12:16:46,436 WARN L193 SmtUtils]: Spent 565.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 189 [2020-09-21 12:16:47,305 WARN L193 SmtUtils]: Spent 579.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 193 [2020-09-21 12:16:48,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:16:48,586 INFO L93 Difference]: Finished difference Result 2157 states and 2754 transitions. [2020-09-21 12:16:48,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-09-21 12:16:48,587 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 61 [2020-09-21 12:16:48,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:16:48,598 INFO L225 Difference]: With dead ends: 2157 [2020-09-21 12:16:48,599 INFO L226 Difference]: Without dead ends: 1723 [2020-09-21 12:16:48,602 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 264 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=237, Invalid=885, Unknown=0, NotChecked=0, Total=1122 [2020-09-21 12:16:48,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1723 states. [2020-09-21 12:16:48,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1723 to 1603. [2020-09-21 12:16:48,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1603 states. [2020-09-21 12:16:48,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1603 states to 1603 states and 1909 transitions. [2020-09-21 12:16:48,928 INFO L78 Accepts]: Start accepts. Automaton has 1603 states and 1909 transitions. Word has length 61 [2020-09-21 12:16:48,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:16:48,931 INFO L479 AbstractCegarLoop]: Abstraction has 1603 states and 1909 transitions. [2020-09-21 12:16:48,931 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-21 12:16:48,931 INFO L276 IsEmpty]: Start isEmpty. Operand 1603 states and 1909 transitions. [2020-09-21 12:16:48,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-09-21 12:16:48,942 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:16:48,942 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:16:48,943 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-21 12:16:48,943 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:16:48,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:16:48,943 INFO L82 PathProgramCache]: Analyzing trace with hash -971494118, now seen corresponding path program 1 times [2020-09-21 12:16:48,944 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:16:48,944 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [209725015] [2020-09-21 12:16:48,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:16:49,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:49,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:49,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:49,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:50,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:50,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-09-21 12:16:50,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:16:50,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1029 [2020-09-21 12:16:50,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:50,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:16:50,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 63 [2020-09-21 12:16:50,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-09-21 12:16:50,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:16:50,284 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 12:16:50,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:16:50,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:50,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:50,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:50,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:16:50,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:50,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-21 12:16:50,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:50,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:16:50,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:16:50,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:16:50,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:16:50,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:16:50,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:50,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:50,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:50,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:16:50,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:50,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:16:50,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:50,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:16:50,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:16:50,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:16:50,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:16:50,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:16:50,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:50,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:50,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:50,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:16:50,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:50,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:16:50,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:50,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:16:50,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:16:50,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:16:50,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:16:50,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:16:50,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:50,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:50,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:50,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:16:50,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:50,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:16:50,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:50,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:16:50,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:16:50,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:16:50,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:16:50,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:16:50,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:50,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:50,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:50,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:16:50,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:50,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:16:50,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:50,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:16:50,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:16:50,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:16:50,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:16:50,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-21 12:16:50,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:50,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:50,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:50,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:16:50,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:50,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:16:50,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:50,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:16:50,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:16:50,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:16:50,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:16:50,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-09-21 12:16:50,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:50,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:50,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:50,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:50,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-21 12:16:50,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:16:50,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 257 [2020-09-21 12:16:50,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:50,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:16:50,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:16:50,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-21 12:16:50,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:16:50,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:16:50,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:50,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:50,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:50,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:50,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-21 12:16:50,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:16:50,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-09-21 12:16:50,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:50,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:16:50,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:16:50,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-21 12:16:50,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:16:50,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:16:50,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:50,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:50,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:50,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:50,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-09-21 12:16:50,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:16:50,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-09-21 12:16:50,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:50,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:16:50,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:16:50,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:16:50,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:16:50,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:16:51,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:51,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:51,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:51,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:51,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-21 12:16:51,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:16:51,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-09-21 12:16:51,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:51,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:16:51,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:16:51,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:16:51,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:16:51,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:16:51,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:51,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:51,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:51,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-21 12:16:51,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:51,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 12:16:51,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:51,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:16:51,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:16:51,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:16:51,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:16:51,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:16:51,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:51,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:51,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:51,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:16:51,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:51,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 12:16:51,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:51,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:16:51,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:16:51,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:16:51,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:16:51,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 12:16:51,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:51,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:51,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:51,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-21 12:16:51,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:51,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-21 12:16:51,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:51,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:16:51,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:16:51,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:16:51,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:16:51,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:16:51,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:51,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:51,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:51,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-09-21 12:16:51,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:51,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:16:51,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:51,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:16:51,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:16:51,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:16:51,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:16:51,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:16:51,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:51,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:51,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:51,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:16:51,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:51,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:16:51,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:51,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:16:51,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:16:51,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:16:51,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:16:51,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:16:51,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:51,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:51,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:51,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:16:51,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:51,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:16:51,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:51,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:16:51,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:16:51,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:16:51,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:16:51,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-21 12:16:51,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:51,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:51,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:51,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-21 12:16:51,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:51,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-21 12:16:51,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:51,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:16:51,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:16:51,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-21 12:16:51,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:16:51,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:16:51,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:51,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:51,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:51,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:16:51,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:51,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:16:51,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:51,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:16:51,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:16:51,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:16:51,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:16:51,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-09-21 12:16:51,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:51,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:51,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:51,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:16:51,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:51,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:16:51,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:51,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:16:51,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:16:51,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:16:51,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:16:51,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-09-21 12:16:51,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:51,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:51,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:51,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:16:51,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:51,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:16:51,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:51,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:16:51,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:16:51,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:16:51,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:16:51,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-21 12:16:51,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:51,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:51,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:51,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:16:51,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:51,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:16:51,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:51,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:16:51,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:16:51,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:16:51,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:16:51,265 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-21 12:16:51,269 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [209725015] [2020-09-21 12:16:51,270 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:16:51,270 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-21 12:16:51,270 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57924037] [2020-09-21 12:16:51,271 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-21 12:16:51,271 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:16:51,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-21 12:16:51,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-21 12:16:51,271 INFO L87 Difference]: Start difference. First operand 1603 states and 1909 transitions. Second operand 8 states. [2020-09-21 12:16:51,608 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 12:16:53,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:16:53,851 INFO L93 Difference]: Finished difference Result 2697 states and 3302 transitions. [2020-09-21 12:16:53,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-21 12:16:53,852 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 132 [2020-09-21 12:16:53,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:16:53,865 INFO L225 Difference]: With dead ends: 2697 [2020-09-21 12:16:53,865 INFO L226 Difference]: Without dead ends: 1890 [2020-09-21 12:16:53,869 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=75, Invalid=135, Unknown=0, NotChecked=0, Total=210 [2020-09-21 12:16:53,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1890 states. [2020-09-21 12:16:54,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1890 to 1745. [2020-09-21 12:16:54,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1745 states. [2020-09-21 12:16:54,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1745 states to 1745 states and 2081 transitions. [2020-09-21 12:16:54,193 INFO L78 Accepts]: Start accepts. Automaton has 1745 states and 2081 transitions. Word has length 132 [2020-09-21 12:16:54,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:16:54,194 INFO L479 AbstractCegarLoop]: Abstraction has 1745 states and 2081 transitions. [2020-09-21 12:16:54,194 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-21 12:16:54,194 INFO L276 IsEmpty]: Start isEmpty. Operand 1745 states and 2081 transitions. [2020-09-21 12:16:54,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-09-21 12:16:54,198 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:16:54,198 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:16:54,198 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-21 12:16:54,199 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:16:54,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:16:54,199 INFO L82 PathProgramCache]: Analyzing trace with hash 2121665403, now seen corresponding path program 1 times [2020-09-21 12:16:54,199 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:16:54,199 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [937514749] [2020-09-21 12:16:54,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:16:54,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:54,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:54,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:54,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:55,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:55,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 209 [2020-09-21 12:16:55,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:16:55,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1008 [2020-09-21 12:16:55,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:55,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:16:55,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-09-21 12:16:55,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 12:16:55,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:16:55,623 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 12:16:55,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:16:55,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:55,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:55,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:55,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:16:55,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:55,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-09-21 12:16:55,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:55,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:16:55,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:16:55,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:16:55,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:16:55,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:16:55,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:55,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:55,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:55,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:16:55,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:55,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:16:55,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:55,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:16:55,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:16:55,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:16:55,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:16:55,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:16:55,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:55,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:55,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:55,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:16:55,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:55,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:16:55,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:55,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:16:55,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:16:55,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:16:55,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:16:55,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:16:55,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:55,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:55,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:55,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:16:55,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:55,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:16:55,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:55,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:16:55,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:16:55,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:16:55,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:16:55,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:16:55,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:55,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:55,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:55,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:16:55,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:55,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-21 12:16:55,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:55,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:16:55,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:16:55,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:16:55,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:16:55,923 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2020-09-21 12:16:55,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-09-21 12:16:55,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:55,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:56,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:56,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-21 12:16:56,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:56,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-09-21 12:16:56,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:56,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:16:56,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-09-21 12:16:56,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 12:16:56,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:16:56,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:16:56,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:56,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:56,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:56,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-21 12:16:56,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:56,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-09-21 12:16:56,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:56,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:16:56,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-09-21 12:16:56,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 12:16:56,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:16:56,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:16:56,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:56,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:56,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:56,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-09-21 12:16:56,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:56,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-09-21 12:16:56,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:56,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:16:56,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-21 12:16:56,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 12:16:56,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:16:56,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:16:56,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:56,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:56,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:56,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-21 12:16:56,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:56,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-09-21 12:16:56,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:56,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:16:56,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-21 12:16:56,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 12:16:56,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:16:56,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:16:56,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:56,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:56,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:56,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-21 12:16:56,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:56,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-21 12:16:56,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:56,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:16:56,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:16:56,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-21 12:16:56,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:16:56,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:16:56,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:56,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:56,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:56,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:16:56,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:56,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:16:56,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:56,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:16:56,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:16:56,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:16:56,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:16:56,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 12:16:56,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:56,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:56,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:56,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-21 12:16:56,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:56,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-21 12:16:56,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:56,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:16:56,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-09-21 12:16:56,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:16:56,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:16:56,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:16:56,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:56,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:56,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:56,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-09-21 12:16:56,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:56,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:16:56,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:56,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:16:56,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:16:56,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:16:56,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:16:56,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:16:56,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:56,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:56,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:56,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:16:56,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:56,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:16:56,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:56,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:16:56,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:16:56,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:16:56,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:16:56,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:16:56,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:56,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:56,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:56,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:16:56,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:56,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:16:56,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:56,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:16:56,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:16:56,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:16:56,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:16:56,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-21 12:16:56,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:56,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:56,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:56,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-21 12:16:56,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:56,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 12:16:56,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:56,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:16:56,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-21 12:16:56,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:16:56,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:16:56,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:16:56,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:56,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:56,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:56,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:16:56,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:56,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:16:56,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:56,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:16:56,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:16:56,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:16:56,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:16:56,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-09-21 12:16:56,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:56,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:56,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:56,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:16:56,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:56,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:16:56,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:56,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:16:56,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:16:56,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:16:56,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:16:56,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-21 12:16:56,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:56,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:56,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:56,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-21 12:16:56,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:56,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-21 12:16:56,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:56,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:16:56,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-09-21 12:16:56,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:16:56,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:16:56,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:16:56,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:56,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:56,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:56,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-09-21 12:16:56,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:56,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:16:56,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:56,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:16:56,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:16:56,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:16:56,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:16:56,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:16:56,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:56,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:56,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:56,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:16:56,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:56,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:16:56,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:56,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:16:56,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:16:56,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:16:56,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:16:56,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-09-21 12:16:56,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:56,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:56,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:56,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:16:56,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:56,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:16:56,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:56,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:16:56,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:16:56,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:16:56,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:16:56,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-09-21 12:16:56,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:56,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:56,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:56,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:16:56,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:56,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:16:56,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:56,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:16:56,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:16:56,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:16:56,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:16:56,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-09-21 12:16:56,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:16:56,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:16:56,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:16:56,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:16:56,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:16:56,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:16:56,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:16:56,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:16:56,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:16:56,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:16:56,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:16:56,716 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-09-21 12:16:56,717 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [937514749] [2020-09-21 12:16:56,717 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:16:56,717 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-21 12:16:56,717 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683899413] [2020-09-21 12:16:56,719 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-21 12:16:56,719 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:16:56,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-21 12:16:56,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-09-21 12:16:56,720 INFO L87 Difference]: Start difference. First operand 1745 states and 2081 transitions. Second operand 10 states. [2020-09-21 12:16:57,772 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 12:16:58,060 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 12:16:58,392 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 12:16:58,734 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 12:17:00,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:17:00,282 INFO L93 Difference]: Finished difference Result 3662 states and 4624 transitions. [2020-09-21 12:17:00,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-21 12:17:00,285 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 146 [2020-09-21 12:17:00,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:17:00,297 INFO L225 Difference]: With dead ends: 3662 [2020-09-21 12:17:00,298 INFO L226 Difference]: Without dead ends: 1941 [2020-09-21 12:17:00,304 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-09-21 12:17:00,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1941 states. [2020-09-21 12:17:00,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1941 to 1795. [2020-09-21 12:17:00,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1795 states. [2020-09-21 12:17:00,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1795 states to 1795 states and 2133 transitions. [2020-09-21 12:17:00,623 INFO L78 Accepts]: Start accepts. Automaton has 1795 states and 2133 transitions. Word has length 146 [2020-09-21 12:17:00,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:17:00,623 INFO L479 AbstractCegarLoop]: Abstraction has 1795 states and 2133 transitions. [2020-09-21 12:17:00,623 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-21 12:17:00,623 INFO L276 IsEmpty]: Start isEmpty. Operand 1795 states and 2133 transitions. [2020-09-21 12:17:00,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-09-21 12:17:00,630 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:17:00,630 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:17:00,631 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-21 12:17:00,631 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:17:00,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:17:00,631 INFO L82 PathProgramCache]: Analyzing trace with hash 502690489, now seen corresponding path program 1 times [2020-09-21 12:17:00,632 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:17:00,632 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1663853533] [2020-09-21 12:17:00,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:17:00,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:17:00,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:17:00,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:17:01,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking...