/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_spec1_product49.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 12:07:04,038 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 12:07:04,042 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 12:07:04,089 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 12:07:04,089 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 12:07:04,100 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 12:07:04,103 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 12:07:04,106 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 12:07:04,109 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 12:07:04,113 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 12:07:04,114 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 12:07:04,115 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 12:07:04,115 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 12:07:04,118 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 12:07:04,121 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 12:07:04,122 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 12:07:04,124 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 12:07:04,125 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 12:07:04,127 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 12:07:04,135 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 12:07:04,136 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 12:07:04,139 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 12:07:04,140 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 12:07:04,141 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 12:07:04,145 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 12:07:04,145 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 12:07:04,145 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 12:07:04,149 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 12:07:04,149 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 12:07:04,151 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 12:07:04,152 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 12:07:04,152 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 12:07:04,154 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 12:07:04,154 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 12:07:04,156 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 12:07:04,156 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 12:07:04,157 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 12:07:04,157 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 12:07:04,157 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 12:07:04,158 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 12:07:04,160 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 12:07:04,161 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 12:07:04,210 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 12:07:04,210 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 12:07:04,212 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 12:07:04,212 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 12:07:04,213 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 12:07:04,213 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 12:07:04,213 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 12:07:04,214 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 12:07:04,214 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 12:07:04,214 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 12:07:04,215 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 12:07:04,215 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 12:07:04,216 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 12:07:04,216 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 12:07:04,216 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 12:07:04,216 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 12:07:04,217 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 12:07:04,217 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 12:07:04,217 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 12:07:04,217 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 12:07:04,217 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 12:07:04,218 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 12:07:04,218 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 12:07:04,218 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 12:07:04,218 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 12:07:04,218 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 12:07:04,219 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 12:07:04,219 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 12:07:04,219 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 12:07:04,219 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 12:07:04,666 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 12:07:04,683 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 12:07:04,687 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 12:07:04,689 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 12:07:04,690 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 12:07:04,691 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product49.cil.c [2020-09-21 12:07:04,777 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ebb82ace0/f027ecf633e3452ea389d76590cb9b5d/FLAG3a96b92c4 [2020-09-21 12:07:05,430 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 12:07:05,431 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product49.cil.c [2020-09-21 12:07:05,445 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ebb82ace0/f027ecf633e3452ea389d76590cb9b5d/FLAG3a96b92c4 [2020-09-21 12:07:05,652 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ebb82ace0/f027ecf633e3452ea389d76590cb9b5d [2020-09-21 12:07:05,665 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 12:07:05,671 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 12:07:05,672 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 12:07:05,672 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 12:07:05,678 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 12:07:05,679 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:07:05" (1/1) ... [2020-09-21 12:07:05,688 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31ed4b80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:07:05, skipping insertion in model container [2020-09-21 12:07:05,689 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:07:05" (1/1) ... [2020-09-21 12:07:05,701 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 12:07:05,771 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 12:07:06,280 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:07:06,299 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 12:07:06,380 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:07:06,417 INFO L208 MainTranslator]: Completed translation [2020-09-21 12:07:06,417 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:07:06 WrapperNode [2020-09-21 12:07:06,417 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 12:07:06,418 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 12:07:06,418 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 12:07:06,418 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 12:07:06,433 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:07:06" (1/1) ... [2020-09-21 12:07:06,433 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:07:06" (1/1) ... [2020-09-21 12:07:06,455 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:07:06" (1/1) ... [2020-09-21 12:07:06,456 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:07:06" (1/1) ... [2020-09-21 12:07:06,488 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:07:06" (1/1) ... [2020-09-21 12:07:06,500 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:07:06" (1/1) ... [2020-09-21 12:07:06,505 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:07:06" (1/1) ... [2020-09-21 12:07:06,512 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 12:07:06,513 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 12:07:06,513 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 12:07:06,514 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 12:07:06,515 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:07:06" (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 12:07:06,591 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 12:07:06,592 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 12:07:06,592 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-21 12:07:06,592 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-09-21 12:07:06,592 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-21 12:07:06,593 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-21 12:07:06,593 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-21 12:07:06,593 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-21 12:07:06,593 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 12:07:06,593 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-21 12:07:06,594 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-21 12:07:06,594 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-21 12:07:06,594 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-21 12:07:06,594 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-21 12:07:06,594 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-21 12:07:06,595 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-21 12:07:06,595 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-21 12:07:06,595 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-09-21 12:07:06,595 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-21 12:07:06,596 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-21 12:07:06,596 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-21 12:07:06,596 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-21 12:07:06,596 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-21 12:07:06,596 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-21 12:07:06,597 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-09-21 12:07:06,597 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-09-21 12:07:06,597 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-21 12:07:06,597 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-21 12:07:06,597 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-21 12:07:06,597 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-21 12:07:06,598 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-21 12:07:06,598 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-21 12:07:06,598 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-21 12:07:06,598 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-21 12:07:06,598 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-21 12:07:06,598 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-21 12:07:06,599 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-21 12:07:06,599 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-09-21 12:07:06,599 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-09-21 12:07:06,599 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-21 12:07:06,599 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 12:07:06,599 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 12:07:06,600 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-21 12:07:06,600 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-21 12:07:06,600 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-21 12:07:06,600 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-21 12:07:06,600 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-09-21 12:07:06,600 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-21 12:07:06,600 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-21 12:07:06,601 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-21 12:07:06,601 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-21 12:07:06,601 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-21 12:07:06,601 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-21 12:07:06,601 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-21 12:07:06,601 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-21 12:07:06,602 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-21 12:07:06,602 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-21 12:07:06,602 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-21 12:07:06,602 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-21 12:07:06,602 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 12:07:06,602 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-21 12:07:06,603 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-21 12:07:06,603 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-21 12:07:06,603 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-21 12:07:06,603 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-21 12:07:06,603 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-21 12:07:06,603 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-21 12:07:06,603 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-21 12:07:06,604 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-21 12:07:06,604 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-21 12:07:06,604 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-21 12:07:06,604 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-21 12:07:06,604 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-21 12:07:06,604 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-21 12:07:06,605 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-21 12:07:06,605 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-21 12:07:06,605 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-21 12:07:06,605 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-21 12:07:06,605 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-21 12:07:06,605 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-09-21 12:07:06,606 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-09-21 12:07:06,606 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-21 12:07:06,606 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-21 12:07:06,606 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-21 12:07:06,606 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-21 12:07:06,606 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-09-21 12:07:06,607 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-09-21 12:07:06,607 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-09-21 12:07:06,607 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-21 12:07:06,607 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-21 12:07:06,607 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-21 12:07:06,607 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 12:07:06,608 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-21 12:07:06,608 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 12:07:07,794 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 12:07:07,794 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-21 12:07:07,803 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:07:07 BoogieIcfgContainer [2020-09-21 12:07:07,803 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 12:07:07,805 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 12:07:07,806 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 12:07:07,809 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 12:07:07,809 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 12:07:05" (1/3) ... [2020-09-21 12:07:07,810 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@414e4e97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:07:07, skipping insertion in model container [2020-09-21 12:07:07,810 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:07:06" (2/3) ... [2020-09-21 12:07:07,811 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@414e4e97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:07:07, skipping insertion in model container [2020-09-21 12:07:07,811 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:07:07" (3/3) ... [2020-09-21 12:07:07,813 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product49.cil.c [2020-09-21 12:07:07,825 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 12:07:07,837 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 12:07:07,858 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 12:07:07,884 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 12:07:07,884 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 12:07:07,884 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 12:07:07,884 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 12:07:07,885 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 12:07:07,885 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 12:07:07,885 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 12:07:07,885 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 12:07:07,909 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states. [2020-09-21 12:07:07,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-09-21 12:07:07,920 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:07:07,921 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 12:07:07,922 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:07:07,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:07:07,928 INFO L82 PathProgramCache]: Analyzing trace with hash 922466731, now seen corresponding path program 1 times [2020-09-21 12:07:07,939 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:07:07,940 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [757040649] [2020-09-21 12:07:07,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:07:08,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:08,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:08,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:08,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:09,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:09,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-21 12:07:09,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:07:09,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1248 [2020-09-21 12:07:09,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:09,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:09,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-21 12:07:09,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:09,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-21 12:07:09,847 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 12:07:09,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:07:09,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:09,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:09,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:09,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:09,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:09,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-09-21 12:07:09,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:09,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:09,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:09,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:09,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:09,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:07:09,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:09,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:09,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:09,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:07:09,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:09,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:07:09,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:09,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:09,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:09,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:09,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:09,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:07:09,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:09,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:09,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:09,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:07:09,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:09,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:07:09,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:09,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:09,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:09,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:09,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:09,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:07:09,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:10,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:10,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:10,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:10,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:10,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:07:10,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:10,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:10,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:10,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:10,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:07:10,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:07:10,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:10,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:10,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:10,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:07:10,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:10,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-21 12:07:10,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:10,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:10,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:10,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:10,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:10,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-09-21 12:07:10,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:10,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:10,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:10,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:10,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:10,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:07:10,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:10,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:10,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:07:10,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:10,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:10,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-09-21 12:07:10,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:10,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:10,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:10,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:10,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:10,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:07:10,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:10,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:10,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:07:10,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:10,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:10,057 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 12:07:10,058 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [757040649] [2020-09-21 12:07:10,060 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:07:10,060 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 12:07:10,061 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959017547] [2020-09-21 12:07:10,069 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 12:07:10,069 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:07:10,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 12:07:10,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 12:07:10,090 INFO L87 Difference]: Start difference. First operand 174 states. Second operand 3 states. [2020-09-21 12:07:11,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:07:11,230 INFO L93 Difference]: Finished difference Result 297 states and 388 transitions. [2020-09-21 12:07:11,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 12:07:11,232 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-09-21 12:07:11,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:07:11,256 INFO L225 Difference]: With dead ends: 297 [2020-09-21 12:07:11,257 INFO L226 Difference]: Without dead ends: 160 [2020-09-21 12:07:11,264 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 12:07:11,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-09-21 12:07:11,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 128. [2020-09-21 12:07:11,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-09-21 12:07:11,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 150 transitions. [2020-09-21 12:07:11,359 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 150 transitions. Word has length 46 [2020-09-21 12:07:11,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:07:11,359 INFO L479 AbstractCegarLoop]: Abstraction has 128 states and 150 transitions. [2020-09-21 12:07:11,359 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 12:07:11,359 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 150 transitions. [2020-09-21 12:07:11,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-09-21 12:07:11,363 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:07:11,363 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 12:07:11,364 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 12:07:11,364 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:07:11,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:07:11,364 INFO L82 PathProgramCache]: Analyzing trace with hash 288176866, now seen corresponding path program 1 times [2020-09-21 12:07:11,365 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:07:11,365 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1563437791] [2020-09-21 12:07:11,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:07:11,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:11,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:11,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:11,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:12,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:12,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-21 12:07:12,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:07:12,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1051 [2020-09-21 12:07:12,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:12,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:07:12,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-09-21 12:07:12,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-21 12:07:12,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-21 12:07:12,763 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 12:07:12,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:07:12,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:12,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:12,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:12,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:12,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:12,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-09-21 12:07:12,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:12,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:12,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:12,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:12,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:12,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:07:12,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:12,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:12,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:12,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:07:12,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:12,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:07:12,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:12,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:12,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:12,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:12,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:12,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:07:12,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:12,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:12,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:12,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:07:12,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:12,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:07:12,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:12,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:12,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:12,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:12,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:12,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:07:12,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:12,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:12,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:12,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:12,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:12,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:07:12,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:12,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:12,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:12,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:12,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:12,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:07:12,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:12,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:12,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:12,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:07:12,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:12,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:07:12,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:12,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:12,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:12,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:12,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:12,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-21 12:07:12,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:12,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:12,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:12,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:12,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:12,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:07:12,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:12,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:12,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:07:12,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:12,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:12,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-21 12:07:12,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:12,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:12,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:12,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:12,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:12,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:07:12,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:12,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:12,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:07:12,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:12,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:12,962 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 12:07:12,962 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1563437791] [2020-09-21 12:07:12,963 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:07:12,963 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 12:07:12,964 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905767813] [2020-09-21 12:07:12,967 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 12:07:12,967 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:07:12,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 12:07:12,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 12:07:12,968 INFO L87 Difference]: Start difference. First operand 128 states and 150 transitions. Second operand 4 states. [2020-09-21 12:07:13,606 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 12:07:14,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:07:14,598 INFO L93 Difference]: Finished difference Result 230 states and 279 transitions. [2020-09-21 12:07:14,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:07:14,598 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-09-21 12:07:14,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:07:14,601 INFO L225 Difference]: With dead ends: 230 [2020-09-21 12:07:14,601 INFO L226 Difference]: Without dead ends: 144 [2020-09-21 12:07:14,603 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:07:14,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-09-21 12:07:14,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 119. [2020-09-21 12:07:14,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-09-21 12:07:14,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 138 transitions. [2020-09-21 12:07:14,659 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 138 transitions. Word has length 47 [2020-09-21 12:07:14,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:07:14,660 INFO L479 AbstractCegarLoop]: Abstraction has 119 states and 138 transitions. [2020-09-21 12:07:14,660 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 12:07:14,660 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 138 transitions. [2020-09-21 12:07:14,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-21 12:07:14,663 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:07:14,663 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 12:07:14,663 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 12:07:14,663 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:07:14,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:07:14,664 INFO L82 PathProgramCache]: Analyzing trace with hash -2059632594, now seen corresponding path program 1 times [2020-09-21 12:07:14,664 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:07:14,664 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1143587378] [2020-09-21 12:07:14,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:07:14,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:14,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:14,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:15,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:15,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-21 12:07:15,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:07:15,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1011 [2020-09-21 12:07:15,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:15,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:07:15,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:07:15,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-21 12:07:15,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:16,051 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 12:07:16,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:07:16,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:16,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:16,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:16,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:16,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:16,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-09-21 12:07:16,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:16,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:07:16,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:16,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 12:07:16,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:16,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:07:16,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:16,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:16,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:16,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:07:16,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:16,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:07:16,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:16,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:07:16,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:16,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:07:16,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:16,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:07:16,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:16,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:16,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:16,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:07:16,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:16,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:07:16,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:16,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:07:16,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:16,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:07:16,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:16,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:07:16,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:16,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:16,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:16,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:16,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:16,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-21 12:07:16,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:16,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:07:16,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:16,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:07:16,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:16,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:07:16,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:16,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:16,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:16,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:07:16,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:16,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:07:16,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:16,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:07:16,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:16,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:07:16,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:16,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-21 12:07:16,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:16,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:16,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:16,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:16,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:16,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:07:16,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:16,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:16,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:07:16,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:16,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:16,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-21 12:07:16,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:16,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:16,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:16,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:16,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:16,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:07:16,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:16,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:16,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:07:16,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:16,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:16,279 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 12:07:16,280 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1143587378] [2020-09-21 12:07:16,280 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:07:16,281 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 12:07:16,281 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926719278] [2020-09-21 12:07:16,281 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 12:07:16,281 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:07:16,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 12:07:16,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 12:07:16,283 INFO L87 Difference]: Start difference. First operand 119 states and 138 transitions. Second operand 4 states. [2020-09-21 12:07:16,578 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 12:07:17,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:07:17,325 INFO L93 Difference]: Finished difference Result 239 states and 293 transitions. [2020-09-21 12:07:17,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:07:17,326 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-09-21 12:07:17,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:07:17,331 INFO L225 Difference]: With dead ends: 239 [2020-09-21 12:07:17,331 INFO L226 Difference]: Without dead ends: 144 [2020-09-21 12:07:17,333 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:07:17,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-09-21 12:07:17,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 119. [2020-09-21 12:07:17,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-09-21 12:07:17,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 137 transitions. [2020-09-21 12:07:17,365 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 137 transitions. Word has length 51 [2020-09-21 12:07:17,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:07:17,366 INFO L479 AbstractCegarLoop]: Abstraction has 119 states and 137 transitions. [2020-09-21 12:07:17,366 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 12:07:17,366 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 137 transitions. [2020-09-21 12:07:17,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-09-21 12:07:17,368 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:07:17,368 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:07:17,368 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 12:07:17,368 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:07:17,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:07:17,369 INFO L82 PathProgramCache]: Analyzing trace with hash -1182566725, now seen corresponding path program 1 times [2020-09-21 12:07:17,369 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:07:17,369 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1118922821] [2020-09-21 12:07:17,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:07:17,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:17,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:17,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:17,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:18,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:18,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-09-21 12:07:18,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:07:18,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1012 [2020-09-21 12:07:18,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:18,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:07:18,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-09-21 12:07:18,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 12:07:18,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:18,744 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 12:07:18,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:07:18,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:18,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:18,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:18,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:18,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:18,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-09-21 12:07:18,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:18,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:18,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:18,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:18,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:18,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:07:18,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:18,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:18,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:18,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:07:18,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:18,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:07:18,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:18,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:18,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:18,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:18,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:18,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:07:18,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:18,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:18,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:18,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:07:18,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:18,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:07:18,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:18,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:18,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:18,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:18,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:18,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:07:18,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:18,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:18,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:18,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:18,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:18,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:07:18,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:18,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:18,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:18,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:18,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:18,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:07:18,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:18,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:18,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:18,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:07:18,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:18,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:07:18,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:18,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:18,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:18,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:18,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:18,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-09-21 12:07:18,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:18,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:18,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:18,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-21 12:07:18,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:18,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-21 12:07:18,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:18,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:07:18,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-21 12:07:18,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 12:07:18,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:18,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:07:18,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:18,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:18,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:18,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-21 12:07:18,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:18,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 12:07:18,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:18,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:07:18,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-21 12:07:18,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-21 12:07:18,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:18,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:07:18,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:18,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:18,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:18,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:07:18,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:18,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:07:18,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:18,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:07:18,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:18,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:07:18,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:18,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-21 12:07:18,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:18,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:18,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:18,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:18,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:18,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:07:18,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:18,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:18,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:07:18,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:18,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:18,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-09-21 12:07:18,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:18,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:18,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:18,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:18,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:18,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:07:18,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:18,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:18,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:07:18,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:18,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:18,966 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 12:07:18,967 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1118922821] [2020-09-21 12:07:18,967 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:07:18,967 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-21 12:07:18,968 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879597769] [2020-09-21 12:07:18,969 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 12:07:18,969 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:07:18,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 12:07:18,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-21 12:07:18,970 INFO L87 Difference]: Start difference. First operand 119 states and 137 transitions. Second operand 7 states. [2020-09-21 12:07:19,397 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 12:07:20,680 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 12:07:21,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:07:21,421 INFO L93 Difference]: Finished difference Result 331 states and 409 transitions. [2020-09-21 12:07:21,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-21 12:07:21,421 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 64 [2020-09-21 12:07:21,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:07:21,430 INFO L225 Difference]: With dead ends: 331 [2020-09-21 12:07:21,430 INFO L226 Difference]: Without dead ends: 236 [2020-09-21 12:07:21,431 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2020-09-21 12:07:21,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2020-09-21 12:07:21,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 195. [2020-09-21 12:07:21,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2020-09-21 12:07:21,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 222 transitions. [2020-09-21 12:07:21,508 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 222 transitions. Word has length 64 [2020-09-21 12:07:21,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:07:21,509 INFO L479 AbstractCegarLoop]: Abstraction has 195 states and 222 transitions. [2020-09-21 12:07:21,509 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 12:07:21,509 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 222 transitions. [2020-09-21 12:07:21,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-09-21 12:07:21,516 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:07:21,517 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:07:21,517 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-21 12:07:21,517 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:07:21,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:07:21,517 INFO L82 PathProgramCache]: Analyzing trace with hash 590157777, now seen corresponding path program 1 times [2020-09-21 12:07:21,518 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:07:21,518 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1935412245] [2020-09-21 12:07:21,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:07:21,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:21,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:22,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:22,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-09-21 12:07:22,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:22,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1008 [2020-09-21 12:07:22,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:22,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-21 12:07:22,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:07:22,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-09-21 12:07:22,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:22,934 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 12:07:22,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:07:22,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:22,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:23,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:23,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:23,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:23,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-09-21 12:07:23,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:23,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:07:23,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:23,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 12:07:23,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:07:23,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:07:23,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:23,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:23,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:23,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:07:23,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:23,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:07:23,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:23,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:07:23,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:23,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:07:23,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:07:23,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:07:23,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:23,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:23,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:23,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:07:23,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:23,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:07:23,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:23,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:07:23,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:23,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:07:23,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:07:23,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:07:23,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:23,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:23,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:23,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:23,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:23,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:07:23,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:23,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:07:23,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:23,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:07:23,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:23,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:07:23,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:23,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:23,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:23,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:07:23,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:23,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:07:23,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:23,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:07:23,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:23,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:07:23,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:07:23,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-09-21 12:07:23,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:23,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:23,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:23,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-21 12:07:23,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:23,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-21 12:07:23,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:23,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:07:23,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:23,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-21 12:07:23,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:07:23,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:07:23,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:23,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:23,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:23,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-21 12:07:23,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:23,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-21 12:07:23,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:23,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:23,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:23,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:23,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:07:23,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:07:23,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:23,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:23,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:23,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-21 12:07:23,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:23,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 12:07:23,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:23,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:23,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:23,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:23,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:23,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:07:23,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:23,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:23,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:23,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:07:23,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:23,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:07:23,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:23,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:23,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:23,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:23,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:23,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 12:07:23,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:23,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:23,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:23,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:07:23,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:23,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:07:23,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:23,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:23,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:23,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:23,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:23,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-09-21 12:07:23,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:23,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:23,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:23,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:23,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:23,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 12:07:23,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:23,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:07:23,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:23,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:07:23,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:23,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-21 12:07:23,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:23,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:23,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:23,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:23,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:23,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:07:23,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:23,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:23,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:07:23,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:23,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:23,291 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 12:07:23,292 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1935412245] [2020-09-21 12:07:23,292 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:07:23,292 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-21 12:07:23,292 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416874999] [2020-09-21 12:07:23,293 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-21 12:07:23,293 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:07:23,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-21 12:07:23,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-21 12:07:23,294 INFO L87 Difference]: Start difference. First operand 195 states and 222 transitions. Second operand 8 states. [2020-09-21 12:07:23,709 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 12:07:24,920 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 12:07:25,241 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 12:07:25,541 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 12:07:25,830 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 12:07:26,191 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 12:07:27,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:07:27,371 INFO L93 Difference]: Finished difference Result 580 states and 716 transitions. [2020-09-21 12:07:27,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-21 12:07:27,372 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 78 [2020-09-21 12:07:27,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:07:27,378 INFO L225 Difference]: With dead ends: 580 [2020-09-21 12:07:27,378 INFO L226 Difference]: Without dead ends: 409 [2020-09-21 12:07:27,379 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-09-21 12:07:27,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2020-09-21 12:07:27,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 345. [2020-09-21 12:07:27,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 345 states. [2020-09-21 12:07:27,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 394 transitions. [2020-09-21 12:07:27,461 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 394 transitions. Word has length 78 [2020-09-21 12:07:27,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:07:27,462 INFO L479 AbstractCegarLoop]: Abstraction has 345 states and 394 transitions. [2020-09-21 12:07:27,462 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-21 12:07:27,462 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 394 transitions. [2020-09-21 12:07:27,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-09-21 12:07:27,463 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:07:27,464 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:07:27,464 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-21 12:07:27,464 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:07:27,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:07:27,464 INFO L82 PathProgramCache]: Analyzing trace with hash 1032148237, now seen corresponding path program 1 times [2020-09-21 12:07:27,465 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:07:27,465 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1536820033] [2020-09-21 12:07:27,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:07:27,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:27,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:28,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:28,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:28,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:28,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:28,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-09-21 12:07:28,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-21 12:07:28,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1005 [2020-09-21 12:07:28,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:28,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:07:28,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-09-21 12:07:28,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-21 12:07:28,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:28,879 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 12:07:28,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:07:28,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:28,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:28,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:28,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:28,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:28,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-09-21 12:07:28,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:28,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:28,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:28,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:28,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:28,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:07:28,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:28,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:28,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:28,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:07:28,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:28,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:07:28,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:28,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:28,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:28,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:28,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:28,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:07:28,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:28,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:28,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:28,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:07:28,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:28,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:07:28,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:28,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:28,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:28,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:28,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:28,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:07:28,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:28,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:28,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:28,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:28,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:28,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:07:28,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:28,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:28,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:28,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:28,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:28,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:07:28,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:28,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:28,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:28,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:07:28,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:28,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:07:28,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:28,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:28,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:28,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:28,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:28,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-21 12:07:28,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:28,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:28,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:28,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:28,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:28,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:07:28,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:28,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:28,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:28,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:28,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:29,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-21 12:07:29,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:29,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:29,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:29,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:29,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-21 12:07:29,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:07:29,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-09-21 12:07:29,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:29,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:07:29,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:29,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 12:07:29,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:07:29,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:07:29,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:29,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:29,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:29,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-21 12:07:29,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:29,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-21 12:07:29,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:29,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:07:29,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:29,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-21 12:07:29,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:07:29,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:07:29,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:29,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:29,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:29,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-21 12:07:29,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:29,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-21 12:07:29,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:29,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:07:29,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:29,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-21 12:07:29,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:07:29,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:07:29,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:29,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:29,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:29,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:07:29,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:29,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:07:29,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:29,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:29,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:29,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:29,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:07:29,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 12:07:29,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:29,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:29,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:29,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:07:29,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:29,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:07:29,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:29,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:07:29,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:29,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:07:29,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:07:29,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-09-21 12:07:29,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:29,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:29,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:29,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:29,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:29,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:07:29,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:29,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:07:29,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:29,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:07:29,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:29,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-09-21 12:07:29,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:29,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:29,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:29,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:29,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:29,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 12:07:29,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:29,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:07:29,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:29,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:07:29,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:07:29,206 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 12:07:29,206 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1536820033] [2020-09-21 12:07:29,207 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:07:29,207 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-21 12:07:29,207 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838964899] [2020-09-21 12:07:29,208 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-21 12:07:29,208 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:07:29,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-21 12:07:29,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-21 12:07:29,209 INFO L87 Difference]: Start difference. First operand 345 states and 394 transitions. Second operand 9 states. [2020-09-21 12:07:29,665 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 12:07:30,787 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 12:07:31,069 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 12:07:31,419 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 12:07:31,727 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 12:07:32,022 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 12:07:32,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:07:32,873 INFO L93 Difference]: Finished difference Result 448 states and 562 transitions. [2020-09-21 12:07:32,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-21 12:07:32,874 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 82 [2020-09-21 12:07:32,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:07:32,879 INFO L225 Difference]: With dead ends: 448 [2020-09-21 12:07:32,879 INFO L226 Difference]: Without dead ends: 445 [2020-09-21 12:07:32,880 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-09-21 12:07:32,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states. [2020-09-21 12:07:32,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 345. [2020-09-21 12:07:32,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 345 states. [2020-09-21 12:07:32,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 393 transitions. [2020-09-21 12:07:32,955 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 393 transitions. Word has length 82 [2020-09-21 12:07:32,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:07:32,955 INFO L479 AbstractCegarLoop]: Abstraction has 345 states and 393 transitions. [2020-09-21 12:07:32,955 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-21 12:07:32,956 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 393 transitions. [2020-09-21 12:07:32,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-09-21 12:07:32,957 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:07:32,957 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:07:32,957 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-21 12:07:32,957 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:07:32,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:07:32,958 INFO L82 PathProgramCache]: Analyzing trace with hash 2065507240, now seen corresponding path program 1 times [2020-09-21 12:07:32,958 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:07:32,958 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [513210831] [2020-09-21 12:07:32,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:07:33,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:33,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:33,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:33,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-09-21 12:07:33,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:33,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 628 [2020-09-21 12:07:33,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:33,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:07:33,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-09-21 12:07:33,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 12:07:33,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:33,916 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 12:07:33,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:07:33,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:33,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:33,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:33,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:33,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:33,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-09-21 12:07:33,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:33,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:33,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:33,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:33,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:33,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:07:33,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:33,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:33,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:33,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:07:33,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:33,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:07:33,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:33,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:33,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:33,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:33,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:33,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:07:33,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:33,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:33,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:33,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:07:33,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:33,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:07:33,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:33,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:33,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:34,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:34,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:34,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:07:34,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:34,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:34,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:34,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:34,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:34,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:07:34,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:34,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:34,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:34,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:34,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:34,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:07:34,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:34,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:34,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:34,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:07:34,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:34,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:07:34,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:34,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:34,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:34,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:34,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:34,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-21 12:07:34,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:34,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:34,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:34,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:34,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:34,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:07:34,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:34,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:34,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:34,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:34,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:34,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-21 12:07:34,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:34,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:34,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:34,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-21 12:07:34,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:34,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-09-21 12:07:34,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:34,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:07:34,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-21 12:07:34,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 12:07:34,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:34,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:07:34,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:34,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:34,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:34,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-21 12:07:34,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:34,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-09-21 12:07:34,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:34,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:07:34,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-21 12:07:34,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 12:07:34,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:34,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:07:34,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:34,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:34,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:34,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-21 12:07:34,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:34,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-21 12:07:34,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:34,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:07:34,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:34,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-21 12:07:34,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:34,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:07:34,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:34,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:34,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:34,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:07:34,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:34,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:07:34,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:34,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:34,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:34,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:34,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:34,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 12:07:34,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:34,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:34,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:34,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:34,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:34,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:07:34,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:34,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:34,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:07:34,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:34,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:34,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-09-21 12:07:34,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:34,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:34,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:34,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:34,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:34,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:07:34,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:34,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:34,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:07:34,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:34,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:34,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-09-21 12:07:34,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:34,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:34,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:34,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:34,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:34,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:07:34,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:34,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:34,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:07:34,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:34,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:34,272 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 12:07:34,272 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [513210831] [2020-09-21 12:07:34,272 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:07:34,273 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-21 12:07:34,273 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594444760] [2020-09-21 12:07:34,273 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-21 12:07:34,273 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:07:34,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-21 12:07:34,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-21 12:07:34,274 INFO L87 Difference]: Start difference. First operand 345 states and 393 transitions. Second operand 9 states. [2020-09-21 12:07:35,540 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 12:07:35,807 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 12:07:36,109 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 12:07:36,411 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 12:07:37,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:07:37,524 INFO L93 Difference]: Finished difference Result 770 states and 946 transitions. [2020-09-21 12:07:37,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-21 12:07:37,526 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 83 [2020-09-21 12:07:37,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:07:37,530 INFO L225 Difference]: With dead ends: 770 [2020-09-21 12:07:37,530 INFO L226 Difference]: Without dead ends: 449 [2020-09-21 12:07:37,532 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-09-21 12:07:37,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2020-09-21 12:07:37,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 355. [2020-09-21 12:07:37,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 355 states. [2020-09-21 12:07:37,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 403 transitions. [2020-09-21 12:07:37,598 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 403 transitions. Word has length 83 [2020-09-21 12:07:37,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:07:37,599 INFO L479 AbstractCegarLoop]: Abstraction has 355 states and 403 transitions. [2020-09-21 12:07:37,599 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-21 12:07:37,599 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 403 transitions. [2020-09-21 12:07:37,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-09-21 12:07:37,600 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:07:37,600 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:07:37,601 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-21 12:07:37,601 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:07:37,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:07:37,601 INFO L82 PathProgramCache]: Analyzing trace with hash 2088139494, now seen corresponding path program 1 times [2020-09-21 12:07:37,602 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:07:37,602 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1807185884] [2020-09-21 12:07:37,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:07:37,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:37,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:38,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:38,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-09-21 12:07:38,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:38,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 466 [2020-09-21 12:07:38,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:38,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:07:38,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-09-21 12:07:38,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:07:38,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:38,345 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 12:07:38,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:07:38,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:38,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:38,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:38,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:38,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:38,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-09-21 12:07:38,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:38,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:38,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:38,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:38,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:07:38,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:07:38,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:38,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:38,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:38,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:07:38,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:38,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:07:38,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:38,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:38,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:38,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:38,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:07:38,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:07:38,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:38,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:38,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:38,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:07:38,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:38,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:07:38,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:38,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:38,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:38,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:38,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:38,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:07:38,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:38,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:38,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:38,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:38,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:38,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:07:38,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:38,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:38,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:38,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:38,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:38,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:07:38,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:38,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:38,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:38,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:07:38,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:38,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:07:38,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:38,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:38,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:38,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:38,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:38,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-21 12:07:38,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:38,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:38,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:38,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:38,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:38,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:07:38,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:38,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:38,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:38,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:38,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:38,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-21 12:07:38,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:38,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:38,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:38,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-21 12:07:38,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:38,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-09-21 12:07:38,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:38,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:07:38,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-21 12:07:38,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:07:38,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:38,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:07:38,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:38,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:38,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:38,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-21 12:07:38,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:38,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-21 12:07:38,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:38,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:07:38,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-21 12:07:38,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:07:38,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:38,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:07:38,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:38,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:38,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:38,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-21 12:07:38,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:38,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-21 12:07:38,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:38,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:07:38,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-21 12:07:38,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:07:38,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:38,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:07:38,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:38,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:38,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:38,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:07:38,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:38,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:07:38,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:38,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 12:07:38,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:38,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:07:38,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:38,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 12:07:38,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:38,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:38,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:38,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:38,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:38,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:07:38,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:38,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:38,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:07:38,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:38,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:38,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-09-21 12:07:38,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:38,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:38,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:38,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:38,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:38,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:07:38,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:38,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:38,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:07:38,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:38,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:38,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-09-21 12:07:38,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:38,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:38,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:38,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:38,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:38,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:07:38,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:38,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:38,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:07:38,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:38,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:38,658 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 12:07:38,658 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1807185884] [2020-09-21 12:07:38,658 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:07:38,659 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-21 12:07:38,659 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931110816] [2020-09-21 12:07:38,659 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-21 12:07:38,659 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:07:38,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-21 12:07:38,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-09-21 12:07:38,660 INFO L87 Difference]: Start difference. First operand 355 states and 403 transitions. Second operand 8 states. [2020-09-21 12:07:39,546 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 12:07:39,876 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 12:07:40,166 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 12:07:41,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:07:41,239 INFO L93 Difference]: Finished difference Result 794 states and 986 transitions. [2020-09-21 12:07:41,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-21 12:07:41,241 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 83 [2020-09-21 12:07:41,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:07:41,250 INFO L225 Difference]: With dead ends: 794 [2020-09-21 12:07:41,251 INFO L226 Difference]: Without dead ends: 463 [2020-09-21 12:07:41,253 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-09-21 12:07:41,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2020-09-21 12:07:41,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 363. [2020-09-21 12:07:41,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 363 states. [2020-09-21 12:07:41,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 411 transitions. [2020-09-21 12:07:41,339 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 411 transitions. Word has length 83 [2020-09-21 12:07:41,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:07:41,339 INFO L479 AbstractCegarLoop]: Abstraction has 363 states and 411 transitions. [2020-09-21 12:07:41,339 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-21 12:07:41,340 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 411 transitions. [2020-09-21 12:07:41,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-09-21 12:07:41,342 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:07:41,342 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:07:41,342 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-21 12:07:41,343 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:07:41,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:07:41,343 INFO L82 PathProgramCache]: Analyzing trace with hash -1181335803, now seen corresponding path program 1 times [2020-09-21 12:07:41,343 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:07:41,344 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [125696308] [2020-09-21 12:07:41,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:07:41,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:41,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:42,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:42,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-09-21 12:07:42,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:42,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1013 [2020-09-21 12:07:42,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:42,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-21 12:07:42,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:07:42,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-21 12:07:42,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:42,704 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 12:07:42,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:07:42,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:42,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:42,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:42,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:42,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:42,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-09-21 12:07:42,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:42,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:07:42,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:42,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 12:07:42,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:07:42,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:07:42,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:42,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:42,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:42,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:07:42,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:42,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:07:42,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:42,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:07:42,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:42,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:07:42,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:42,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:07:42,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:42,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:42,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:42,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:07:42,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:42,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:07:42,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:42,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:07:42,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:42,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:07:42,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:42,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:07:42,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:42,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:42,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:42,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:42,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:42,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:07:42,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:42,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:07:42,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:42,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:07:42,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:07:42,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:07:42,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:42,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:42,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:42,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:07:42,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:42,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:07:42,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:42,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:07:42,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:42,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:07:42,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:07:42,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-21 12:07:42,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:42,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:42,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:42,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:42,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:42,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:07:42,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:42,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:07:42,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:42,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:07:42,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:42,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-21 12:07:42,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:42,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:42,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:42,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-21 12:07:42,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:42,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-21 12:07:42,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:42,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:07:42,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-21 12:07:42,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-21 12:07:42,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:42,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:07:42,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:42,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:42,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:42,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-21 12:07:42,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:42,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-21 12:07:42,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:42,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:07:42,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:42,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-21 12:07:42,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:42,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:07:42,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:42,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:42,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:42,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-21 12:07:42,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:42,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-21 12:07:42,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:42,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:07:42,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:42,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 12:07:42,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:43,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:07:43,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:43,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:43,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:43,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:07:43,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:43,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:07:43,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:43,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:07:43,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:43,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-21 12:07:43,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:43,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 12:07:43,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:43,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:43,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:43,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:43,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:43,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:07:43,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:43,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:07:43,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:43,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:07:43,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:43,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-09-21 12:07:43,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:43,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:43,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:43,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:43,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:43,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:07:43,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:43,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:43,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:07:43,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:43,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:43,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-09-21 12:07:43,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:43,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:43,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:43,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:43,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:43,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:07:43,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:43,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:43,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:07:43,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:43,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:43,056 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 12:07:43,057 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [125696308] [2020-09-21 12:07:43,057 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:07:43,057 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-21 12:07:43,057 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137334913] [2020-09-21 12:07:43,058 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 12:07:43,058 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:07:43,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 12:07:43,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-21 12:07:43,059 INFO L87 Difference]: Start difference. First operand 363 states and 411 transitions. Second operand 7 states. [2020-09-21 12:07:43,555 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 12:07:44,067 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 12:07:46,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:07:46,408 INFO L93 Difference]: Finished difference Result 1097 states and 1408 transitions. [2020-09-21 12:07:46,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-21 12:07:46,409 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 83 [2020-09-21 12:07:46,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:07:46,415 INFO L225 Difference]: With dead ends: 1097 [2020-09-21 12:07:46,415 INFO L226 Difference]: Without dead ends: 758 [2020-09-21 12:07:46,416 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 33 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-09-21 12:07:46,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 758 states. [2020-09-21 12:07:46,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 758 to 659. [2020-09-21 12:07:46,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 659 states. [2020-09-21 12:07:46,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 781 transitions. [2020-09-21 12:07:46,540 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 781 transitions. Word has length 83 [2020-09-21 12:07:46,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:07:46,540 INFO L479 AbstractCegarLoop]: Abstraction has 659 states and 781 transitions. [2020-09-21 12:07:46,541 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 12:07:46,541 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 781 transitions. [2020-09-21 12:07:46,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-09-21 12:07:46,542 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:07:46,543 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:07:46,543 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-21 12:07:46,543 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:07:46,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:07:46,543 INFO L82 PathProgramCache]: Analyzing trace with hash -765720469, now seen corresponding path program 1 times [2020-09-21 12:07:46,544 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:07:46,544 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1030381083] [2020-09-21 12:07:46,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:07:46,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-21 12:07:46,597 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-21 12:07:46,597 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-21 12:07:46,602 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-21 12:07:46,629 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 12:07:46 BoogieIcfgContainer [2020-09-21 12:07:46,629 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 12:07:46,631 INFO L168 Benchmark]: Toolchain (without parser) took 40964.46 ms. Allocated memory was 141.6 MB in the beginning and 730.9 MB in the end (delta: 589.3 MB). Free memory was 104.1 MB in the beginning and 492.0 MB in the end (delta: -387.9 MB). Peak memory consumption was 201.4 MB. Max. memory is 7.1 GB. [2020-09-21 12:07:46,637 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 141.6 MB. Free memory was 123.1 MB in the beginning and 122.7 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. [2020-09-21 12:07:46,641 INFO L168 Benchmark]: CACSL2BoogieTranslator took 745.70 ms. Allocated memory was 141.6 MB in the beginning and 205.0 MB in the end (delta: 63.4 MB). Free memory was 103.2 MB in the beginning and 173.1 MB in the end (delta: -69.9 MB). Peak memory consumption was 25.9 MB. Max. memory is 7.1 GB. [2020-09-21 12:07:46,642 INFO L168 Benchmark]: Boogie Preprocessor took 94.67 ms. Allocated memory is still 205.0 MB. Free memory was 173.1 MB in the beginning and 168.3 MB in the end (delta: 4.8 MB). Peak memory consumption was 4.8 MB. Max. memory is 7.1 GB. [2020-09-21 12:07:46,643 INFO L168 Benchmark]: RCFGBuilder took 1290.06 ms. Allocated memory was 205.0 MB in the beginning and 234.9 MB in the end (delta: 29.9 MB). Free memory was 168.3 MB in the beginning and 190.8 MB in the end (delta: -22.4 MB). Peak memory consumption was 79.1 MB. Max. memory is 7.1 GB. [2020-09-21 12:07:46,643 INFO L168 Benchmark]: TraceAbstraction took 38823.69 ms. Allocated memory was 234.9 MB in the beginning and 730.9 MB in the end (delta: 496.0 MB). Free memory was 190.8 MB in the beginning and 492.0 MB in the end (delta: -301.2 MB). Peak memory consumption was 194.8 MB. Max. memory is 7.1 GB. [2020-09-21 12:07:46,646 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 141.6 MB. Free memory was 123.1 MB in the beginning and 122.7 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 745.70 ms. Allocated memory was 141.6 MB in the beginning and 205.0 MB in the end (delta: 63.4 MB). Free memory was 103.2 MB in the beginning and 173.1 MB in the end (delta: -69.9 MB). Peak memory consumption was 25.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 94.67 ms. Allocated memory is still 205.0 MB. Free memory was 173.1 MB in the beginning and 168.3 MB in the end (delta: 4.8 MB). Peak memory consumption was 4.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1290.06 ms. Allocated memory was 205.0 MB in the beginning and 234.9 MB in the end (delta: 29.9 MB). Free memory was 168.3 MB in the beginning and 190.8 MB in the end (delta: -22.4 MB). Peak memory consumption was 79.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 38823.69 ms. Allocated memory was 234.9 MB in the beginning and 730.9 MB in the end (delta: 496.0 MB). Free memory was 190.8 MB in the beginning and 492.0 MB in the end (delta: -301.2 MB). Peak memory consumption was 194.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 950]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L69] int cleanupTimeShifts = 4; [L342] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L545] int pumpRunning = 0; [L546] int systemActive = 1; [L843] int waterLevel = 1; [L844] int methaneLevelCritical = 0; [L150] int retValue_acc ; [L151] int tmp ; [L155] FCALL select_helpers() [L156] FCALL select_features() [L157] CALL, EXPR valid_product() [L833] int retValue_acc ; [L836] retValue_acc = 1 [L837] return (retValue_acc); [L157] RET, EXPR valid_product() [L157] tmp = valid_product() [L159] COND TRUE \read(tmp) [L161] FCALL setup() [L162] CALL runTest() [L141] CALL test() [L743] int splverifierCounter ; [L744] int tmp ; [L745] int tmp___0 ; [L746] int tmp___1 ; [L747] int tmp___2 ; [L750] splverifierCounter = 0 [L752] COND TRUE 1 [L754] COND TRUE splverifierCounter < 4 [L760] tmp = __VERIFIER_nondet_int() [L762] COND TRUE \read(tmp) [L764] CALL waterRise() [L861] COND TRUE waterLevel < 2 [L862] waterLevel = waterLevel + 1 [L764] RET waterRise() [L770] tmp___0 = __VERIFIER_nondet_int() [L772] COND TRUE \read(tmp___0) [L774] CALL changeMethaneLevel() [L873] COND FALSE !(\read(methaneLevelCritical)) [L876] methaneLevelCritical = 1 [L774] RET changeMethaneLevel() [L780] tmp___2 = __VERIFIER_nondet_int() [L782] COND TRUE \read(tmp___2) [L795] CALL timeShift() [L552] COND FALSE !(\read(pumpRunning)) [L559] COND TRUE \read(systemActive) [L561] CALL processEnvironment() [L607] int tmp ; [L610] COND FALSE !(\read(pumpRunning)) [L625] CALL processEnvironment__wrappee__highWaterSensor() [L581] int tmp ; [L584] COND TRUE ! pumpRunning [L586] CALL, EXPR isHighWaterLevel() [L704] int retValue_acc ; [L705] int tmp ; [L706] int tmp___0 ; [L710] CALL, EXPR isHighWaterSensorDry() [L923] int retValue_acc ; [L926] COND FALSE !(waterLevel < 2) [L930] retValue_acc = 0 [L931] return (retValue_acc); [L710] RET, EXPR isHighWaterSensorDry() [L710] tmp = isHighWaterSensorDry() [L712] COND FALSE !(\read(tmp)) [L715] tmp___0 = 1 [L717] retValue_acc = tmp___0 [L718] return (retValue_acc); [L586] RET, EXPR isHighWaterLevel() [L586] tmp = isHighWaterLevel() [L588] COND TRUE \read(tmp) [L590] CALL activatePump() [L635] pumpRunning = 1 [L590] RET activatePump() [L625] RET processEnvironment__wrappee__highWaterSensor() [L561] RET processEnvironment() [L567] CALL __utac_acc__Specification1_spec__1() [L44] int tmp ; [L45] int tmp___0 ; [L49] CALL, EXPR isMethaneLevelCritical() [L882] int retValue_acc ; [L885] retValue_acc = methaneLevelCritical [L886] return (retValue_acc); [L49] RET, EXPR isMethaneLevelCritical() [L49] tmp = isMethaneLevelCritical() [L51] COND TRUE \read(tmp) [L53] CALL, EXPR isPumpRunning() [L659] int retValue_acc ; [L662] retValue_acc = pumpRunning [L663] return (retValue_acc); [L53] RET, EXPR isPumpRunning() [L53] tmp___0 = isPumpRunning() [L55] COND TRUE \read(tmp___0) [L57] CALL __automaton_fail() [L950] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 40 procedures, 235 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 38.7s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 23.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1043 SDtfs, 1839 SDslu, 813 SDs, 0 SdLazy, 4028 SolverSat, 1074 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 13.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 300 GetRequests, 216 SyntacticMatches, 3 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 9.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=659occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 9 MinimizatonAttempts, 580 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 13.7s InterpolantComputationTime, 704 NumberOfCodeBlocks, 704 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 608 ConstructedInterpolants, 0 QuantifiedInterpolants, 180560 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...