/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --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 log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product53.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 16:52:05,760 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 16:52:05,764 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 16:52:05,789 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 16:52:05,789 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 16:52:05,790 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 16:52:05,792 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 16:52:05,793 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 16:52:05,795 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 16:52:05,796 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 16:52:05,797 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 16:52:05,798 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 16:52:05,798 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 16:52:05,799 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 16:52:05,800 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 16:52:05,801 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 16:52:05,802 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 16:52:05,803 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 16:52:05,805 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 16:52:05,807 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 16:52:05,808 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 16:52:05,809 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 16:52:05,810 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 16:52:05,811 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 16:52:05,814 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 16:52:05,814 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 16:52:05,814 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 16:52:05,818 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 16:52:05,819 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 16:52:05,822 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 16:52:05,822 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 16:52:05,823 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 16:52:05,824 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 16:52:05,826 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 16:52:05,827 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 16:52:05,827 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 16:52:05,828 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 16:52:05,828 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 16:52:05,829 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 16:52:05,830 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 16:52:05,832 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 16:52:05,833 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 [2020-09-24 16:52:05,889 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 16:52:05,890 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 16:52:05,891 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 16:52:05,892 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 16:52:05,892 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 16:52:05,892 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 16:52:05,892 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 16:52:05,892 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 16:52:05,893 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 16:52:05,893 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 16:52:05,893 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 16:52:05,893 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 16:52:05,893 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 16:52:05,894 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 16:52:05,895 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 16:52:05,895 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 16:52:05,895 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 16:52:05,895 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 16:52:05,895 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 16:52:05,896 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 16:52:05,896 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 16:52:05,896 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 16:52:05,896 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 16:52:05,896 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 16:52:05,897 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 16:52:05,897 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 16:52:05,897 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 16:52:05,897 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 16:52:05,898 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 16:52:05,898 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement 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;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;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;log-additional-information=true; [2020-09-24 16:52:06,353 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 16:52:06,376 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 16:52:06,381 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 16:52:06,382 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 16:52:06,384 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 16:52:06,386 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product53.cil.c [2020-09-24 16:52:06,472 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8882df6cd/777aa70a50d741d79ea1584967925fa4/FLAG979312bc7 [2020-09-24 16:52:07,071 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 16:52:07,072 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product53.cil.c [2020-09-24 16:52:07,092 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8882df6cd/777aa70a50d741d79ea1584967925fa4/FLAG979312bc7 [2020-09-24 16:52:07,324 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8882df6cd/777aa70a50d741d79ea1584967925fa4 [2020-09-24 16:52:07,336 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 16:52:07,342 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 16:52:07,343 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 16:52:07,343 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 16:52:07,347 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 16:52:07,348 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 04:52:07" (1/1) ... [2020-09-24 16:52:07,352 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6fa7080 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:52:07, skipping insertion in model container [2020-09-24 16:52:07,353 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 04:52:07" (1/1) ... [2020-09-24 16:52:07,361 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 16:52:07,414 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 16:52:07,867 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 16:52:07,881 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 16:52:07,962 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 16:52:07,998 INFO L208 MainTranslator]: Completed translation [2020-09-24 16:52:07,998 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:52:07 WrapperNode [2020-09-24 16:52:07,998 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 16:52:07,999 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 16:52:07,999 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 16:52:07,999 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 16:52:08,018 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:52:07" (1/1) ... [2020-09-24 16:52:08,018 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:52:07" (1/1) ... [2020-09-24 16:52:08,040 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:52:07" (1/1) ... [2020-09-24 16:52:08,041 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:52:07" (1/1) ... [2020-09-24 16:52:08,071 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:52:07" (1/1) ... [2020-09-24 16:52:08,082 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:52:07" (1/1) ... [2020-09-24 16:52:08,087 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:52:07" (1/1) ... [2020-09-24 16:52:08,096 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 16:52:08,096 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 16:52:08,096 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 16:52:08,097 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 16:52:08,098 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:52:07" (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 [2020-09-24 16:52:08,188 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 16:52:08,188 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 16:52:08,189 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-24 16:52:08,189 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-24 16:52:08,189 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-24 16:52:08,189 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-24 16:52:08,190 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-24 16:52:08,190 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-24 16:52:08,190 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-24 16:52:08,190 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-24 16:52:08,190 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-24 16:52:08,191 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-09-24 16:52:08,191 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-09-24 16:52:08,191 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-24 16:52:08,191 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-24 16:52:08,191 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-24 16:52:08,192 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-24 16:52:08,192 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-24 16:52:08,192 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-24 16:52:08,192 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-09-24 16:52:08,193 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-09-24 16:52:08,193 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-24 16:52:08,193 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-24 16:52:08,193 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-24 16:52:08,193 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-24 16:52:08,194 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-24 16:52:08,194 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-24 16:52:08,194 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-09-24 16:52:08,194 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-09-24 16:52:08,194 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-09-24 16:52:08,195 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-24 16:52:08,195 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-24 16:52:08,195 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-24 16:52:08,195 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-24 16:52:08,195 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-24 16:52:08,195 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-24 16:52:08,196 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-24 16:52:08,196 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-24 16:52:08,196 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-24 16:52:08,196 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-24 16:52:08,196 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 16:52:08,196 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 16:52:08,197 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 16:52:08,197 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-24 16:52:08,197 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-24 16:52:08,197 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-24 16:52:08,197 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-24 16:52:08,197 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-24 16:52:08,198 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-24 16:52:08,198 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-24 16:52:08,198 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-24 16:52:08,198 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-24 16:52:08,198 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-24 16:52:08,199 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-24 16:52:08,199 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-24 16:52:08,199 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-24 16:52:08,199 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-24 16:52:08,199 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-09-24 16:52:08,199 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-09-24 16:52:08,200 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-24 16:52:08,200 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-24 16:52:08,200 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-24 16:52:08,200 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-24 16:52:08,200 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-09-24 16:52:08,200 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-24 16:52:08,201 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-24 16:52:08,201 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-09-24 16:52:08,201 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-09-24 16:52:08,201 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-09-24 16:52:08,201 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-09-24 16:52:08,201 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-24 16:52:08,202 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 16:52:08,202 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-24 16:52:08,202 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-24 16:52:08,202 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 16:52:08,202 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-24 16:52:08,202 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-24 16:52:08,203 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 16:52:08,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-24 16:52:08,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 16:52:08,203 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-24 16:52:08,203 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-24 16:52:08,203 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 16:52:08,204 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-24 16:52:08,204 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-24 16:52:08,204 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 16:52:08,204 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-24 16:52:08,204 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-24 16:52:08,204 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-24 16:52:08,205 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-24 16:52:08,205 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-24 16:52:08,205 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-24 16:52:08,205 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 16:52:08,205 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 16:52:08,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-24 16:52:08,205 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 16:52:09,321 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 16:52:09,321 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-24 16:52:09,328 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 04:52:09 BoogieIcfgContainer [2020-09-24 16:52:09,329 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 16:52:09,330 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 16:52:09,330 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 16:52:09,334 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 16:52:09,334 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 04:52:07" (1/3) ... [2020-09-24 16:52:09,335 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f4a0045 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 04:52:09, skipping insertion in model container [2020-09-24 16:52:09,335 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:52:07" (2/3) ... [2020-09-24 16:52:09,336 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f4a0045 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 04:52:09, skipping insertion in model container [2020-09-24 16:52:09,336 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 04:52:09" (3/3) ... [2020-09-24 16:52:09,338 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product53.cil.c [2020-09-24 16:52:09,349 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 16:52:09,360 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 16:52:09,379 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 16:52:09,411 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 16:52:09,411 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 16:52:09,411 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 16:52:09,412 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 16:52:09,412 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 16:52:09,412 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 16:52:09,412 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 16:52:09,412 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 16:52:09,441 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states. [2020-09-24 16:52:09,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-09-24 16:52:09,461 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:52:09,462 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:52:09,463 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:52:09,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:52:09,471 INFO L82 PathProgramCache]: Analyzing trace with hash 1143611039, now seen corresponding path program 1 times [2020-09-24 16:52:09,480 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:52:09,481 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [904324309] [2020-09-24 16:52:09,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:52:09,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:52:09,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:52:10,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:52:10,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:52:14,084 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:52:14,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-09-24 16:52:14,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 16:52:14,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4253 [2020-09-24 16:52:14,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:52:14,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:52:14,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-09-24 16:52:14,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-09-24 16:52:14,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 16:52:14,567 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 16:52:14,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:52:14,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:52:14,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:52:14,876 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:52:14,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 16:52:14,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:52:14,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 267 [2020-09-24 16:52:14,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:52:14,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:52:14,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:52:14,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-24 16:52:14,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:52:14,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 16:52:14,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:52:14,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:52:14,958 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:52:14,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:52:14,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:52:14,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 16:52:14,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:52:14,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:52:14,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:52:14,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 16:52:14,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:52:14,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 16:52:14,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:52:14,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:52:14,969 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:52:14,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:52:14,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:52:14,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 16:52:14,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:52:14,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:52:14,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:52:14,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 16:52:14,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:52:14,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 16:52:14,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:52:14,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:52:14,984 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:52:14,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:52:14,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:52:14,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 16:52:14,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:52:14,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:52:14,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:52:14,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 16:52:14,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:52:14,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 16:52:14,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:52:14,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:52:14,994 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:52:14,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:52:14,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:52:14,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 16:52:14,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:52:14,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:52:14,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:52:14,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 16:52:14,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:52:14,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-09-24 16:52:14,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:52:15,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:52:15,003 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:52:15,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:52:15,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:52:15,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 16:52:15,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:52:15,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:52:15,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 16:52:15,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:52:15,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:52:15,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-09-24 16:52:15,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:52:15,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:52:15,011 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:52:15,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:52:15,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:52:15,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:52:15,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:52:15,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:52:15,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 16:52:15,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:52:15,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:52:15,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-09-24 16:52:15,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:52:15,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:52:15,020 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:52:15,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:52:15,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:52:15,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 16:52:15,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:52:15,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:52:15,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 16:52:15,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:52:15,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:52:15,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:52:15,057 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [904324309] [2020-09-24 16:52:15,060 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:52:15,060 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 16:52:15,061 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691598218] [2020-09-24 16:52:15,068 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 16:52:15,069 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:52:15,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 16:52:15,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 16:52:15,090 INFO L87 Difference]: Start difference. First operand 343 states. Second operand 4 states. [2020-09-24 16:52:15,690 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 16:52:16,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:52:16,897 INFO L93 Difference]: Finished difference Result 553 states and 657 transitions. [2020-09-24 16:52:16,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 16:52:16,902 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 153 [2020-09-24 16:52:16,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:52:16,922 INFO L225 Difference]: With dead ends: 553 [2020-09-24 16:52:16,922 INFO L226 Difference]: Without dead ends: 335 [2020-09-24 16:52:16,929 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 16:52:16,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2020-09-24 16:52:17,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 292. [2020-09-24 16:52:17,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 292 states. [2020-09-24 16:52:17,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 319 transitions. [2020-09-24 16:52:17,046 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 319 transitions. Word has length 153 [2020-09-24 16:52:17,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:52:17,047 INFO L479 AbstractCegarLoop]: Abstraction has 292 states and 319 transitions. [2020-09-24 16:52:17,048 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 16:52:17,048 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 319 transitions. [2020-09-24 16:52:17,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-09-24 16:52:17,055 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:52:17,055 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:52:17,055 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 16:52:17,056 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:52:17,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:52:17,056 INFO L82 PathProgramCache]: Analyzing trace with hash 1399635308, now seen corresponding path program 1 times [2020-09-24 16:52:17,056 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:52:17,057 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [616632503] [2020-09-24 16:52:17,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:52:17,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:52:17,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:52:17,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:52:17,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:52:17,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:52:21,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:52:22,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:53:02,508 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:53:02,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 220 [2020-09-24 16:53:02,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 16:53:02,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45363 [2020-09-24 16:53:02,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:53:02,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-24 16:53:02,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 77 [2020-09-24 16:53:02,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-24 16:53:02,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:53:02,821 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 16:53:02,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:53:02,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:53:02,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:53:03,071 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:53:03,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 16:53:03,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:53:03,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 220 [2020-09-24 16:53:03,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:53:03,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:53:03,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:53:03,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-09-24 16:53:03,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:53:03,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 16:53:03,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:53:03,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:53:03,122 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:53:03,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:53:03,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:53:03,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 16:53:03,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:53:03,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:53:03,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:53:03,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 16:53:03,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:53:03,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 16:53:03,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:53:03,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:53:03,131 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:53:03,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:53:03,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:53:03,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 16:53:03,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:53:03,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:53:03,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:53:03,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 16:53:03,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:53:03,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 16:53:03,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:53:03,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:53:03,143 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:53:03,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:53:03,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:53:03,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 16:53:03,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:53:03,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:53:03,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:53:03,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 16:53:03,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:53:03,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 16:53:03,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:53:03,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:53:03,150 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:53:03,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:53:03,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:53:03,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 16:53:03,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:53:03,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:53:03,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:53:03,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 16:53:03,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:53:03,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-09-24 16:53:03,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:53:03,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:53:03,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:53:03,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:53:03,183 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:53:03,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 16:53:03,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 16:53:03,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-24 16:53:03,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:53:03,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 16:53:03,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 16:53:03,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 16:53:03,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:53:03,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 16:53:03,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:53:03,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:53:03,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:53:03,215 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:53:03,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-24 16:53:03,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 16:53:03,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 16:53:03,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:53:03,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 16:53:03,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 16:53:03,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-24 16:53:03,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:53:03,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 16:53:03,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:53:03,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:53:03,229 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:53:03,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 16:53:03,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:53:03,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 16:53:03,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:53:03,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 16:53:03,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 16:53:03,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-24 16:53:03,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:53:03,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 16:53:03,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:53:03,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:53:03,241 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:53:03,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:53:03,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:53:03,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:53:03,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:53:03,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:53:03,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:53:03,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 16:53:03,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:53:03,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-09-24 16:53:03,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:53:03,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:53:03,259 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:53:03,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:53:03,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:53:03,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:53:03,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:53:03,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:53:03,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 16:53:03,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:53:03,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:53:03,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-09-24 16:53:03,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:53:03,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:53:03,272 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:53:03,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:53:03,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:53:03,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:53:03,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:53:03,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:53:03,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 16:53:03,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:53:03,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:53:03,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-09-24 16:53:03,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:53:03,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:53:03,278 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:53:03,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:53:03,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:53:03,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:53:03,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:53:03,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:53:03,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 16:53:03,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:53:03,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:53:03,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:53:03,323 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [616632503] [2020-09-24 16:53:03,323 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:53:03,324 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 16:53:03,324 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252880409] [2020-09-24 16:53:03,327 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 16:53:03,327 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:53:03,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 16:53:03,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-24 16:53:03,328 INFO L87 Difference]: Start difference. First operand 292 states and 319 transitions. Second operand 6 states. [2020-09-24 16:53:03,893 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 186