/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 interpolation-heuristic=FIRST --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_product30.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 11:10:07,746 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 11:10:07,750 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 11:10:07,792 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 11:10:07,794 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 11:10:07,803 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 11:10:07,805 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 11:10:07,809 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 11:10:07,812 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 11:10:07,815 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 11:10:07,816 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 11:10:07,817 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 11:10:07,817 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 11:10:07,820 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 11:10:07,823 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 11:10:07,824 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 11:10:07,826 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 11:10:07,827 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 11:10:07,829 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 11:10:07,837 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 11:10:07,839 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 11:10:07,841 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 11:10:07,842 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 11:10:07,843 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 11:10:07,860 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 11:10:07,861 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 11:10:07,861 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 11:10:07,862 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 11:10:07,863 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 11:10:07,867 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 11:10:07,867 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 11:10:07,868 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 11:10:07,871 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 11:10:07,872 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 11:10:07,874 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 11:10:07,874 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 11:10:07,876 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 11:10:07,876 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 11:10:07,876 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 11:10:07,877 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 11:10:07,879 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 11:10:07,880 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 11:10:07,921 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 11:10:07,921 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 11:10:07,923 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 11:10:07,924 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 11:10:07,924 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 11:10:07,924 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 11:10:07,924 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 11:10:07,925 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 11:10:07,925 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 11:10:07,925 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 11:10:07,926 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 11:10:07,926 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 11:10:07,927 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 11:10:07,927 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 11:10:07,927 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 11:10:07,927 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 11:10:07,928 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 11:10:07,928 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 11:10:07,928 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 11:10:07,929 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 11:10:07,930 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 11:10:07,931 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 11:10:07,933 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 11:10:07,935 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 11:10:07,935 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 11:10:07,935 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 11:10:07,935 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 11:10:07,936 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 11:10:07,936 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 11:10:07,936 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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;log-additional-information=true; [2020-09-21 11:10:08,397 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 11:10:08,420 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 11:10:08,425 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 11:10:08,427 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 11:10:08,428 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 11:10:08,429 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product30.cil.c [2020-09-21 11:10:08,522 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9a7305b2a/dd305312db9e4687a7388a4c3f35cd22/FLAG050d767c3 [2020-09-21 11:10:09,175 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 11:10:09,179 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product30.cil.c [2020-09-21 11:10:09,202 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9a7305b2a/dd305312db9e4687a7388a4c3f35cd22/FLAG050d767c3 [2020-09-21 11:10:09,406 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9a7305b2a/dd305312db9e4687a7388a4c3f35cd22 [2020-09-21 11:10:09,420 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 11:10:09,426 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 11:10:09,427 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 11:10:09,428 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 11:10:09,433 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 11:10:09,434 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:10:09" (1/1) ... [2020-09-21 11:10:09,438 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@532b1c07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:10:09, skipping insertion in model container [2020-09-21 11:10:09,439 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:10:09" (1/1) ... [2020-09-21 11:10:09,448 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 11:10:09,498 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 11:10:09,948 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 11:10:10,061 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 11:10:10,168 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 11:10:10,206 INFO L208 MainTranslator]: Completed translation [2020-09-21 11:10:10,207 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:10:10 WrapperNode [2020-09-21 11:10:10,207 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 11:10:10,208 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 11:10:10,208 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 11:10:10,208 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 11:10:10,224 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:10:10" (1/1) ... [2020-09-21 11:10:10,225 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:10:10" (1/1) ... [2020-09-21 11:10:10,245 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:10:10" (1/1) ... [2020-09-21 11:10:10,246 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:10:10" (1/1) ... [2020-09-21 11:10:10,276 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:10:10" (1/1) ... [2020-09-21 11:10:10,287 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:10:10" (1/1) ... [2020-09-21 11:10:10,293 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:10:10" (1/1) ... [2020-09-21 11:10:10,300 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 11:10:10,301 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 11:10:10,301 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 11:10:10,301 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 11:10:10,303 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:10:10" (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 11:10:10,376 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 11:10:10,376 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 11:10:10,376 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-21 11:10:10,377 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-21 11:10:10,377 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-21 11:10:10,377 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-21 11:10:10,377 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-21 11:10:10,377 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-21 11:10:10,378 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-21 11:10:10,378 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-09-21 11:10:10,378 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-21 11:10:10,378 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-21 11:10:10,378 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-21 11:10:10,379 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-21 11:10:10,379 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 11:10:10,379 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-21 11:10:10,379 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-21 11:10:10,379 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-21 11:10:10,380 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-21 11:10:10,386 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-21 11:10:10,386 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-21 11:10:10,386 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-21 11:10:10,386 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-21 11:10:10,386 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-21 11:10:10,387 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-09-21 11:10:10,387 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-21 11:10:10,387 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2020-09-21 11:10:10,387 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-21 11:10:10,387 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-21 11:10:10,387 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-21 11:10:10,388 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-21 11:10:10,388 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-21 11:10:10,388 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-09-21 11:10:10,388 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-09-21 11:10:10,388 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-21 11:10:10,388 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-21 11:10:10,388 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-21 11:10:10,388 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-21 11:10:10,389 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-21 11:10:10,389 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-09-21 11:10:10,389 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 11:10:10,389 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 11:10:10,389 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-21 11:10:10,389 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-21 11:10:10,389 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-21 11:10:10,390 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-21 11:10:10,390 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-21 11:10:10,390 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-21 11:10:10,390 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-21 11:10:10,390 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-09-21 11:10:10,390 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-21 11:10:10,390 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-21 11:10:10,390 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-21 11:10:10,391 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-21 11:10:10,391 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-21 11:10:10,391 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-21 11:10:10,391 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-21 11:10:10,391 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-21 11:10:10,391 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-21 11:10:10,391 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-21 11:10:10,392 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-21 11:10:10,392 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 11:10:10,392 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-21 11:10:10,392 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-21 11:10:10,392 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-21 11:10:10,392 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-21 11:10:10,392 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-21 11:10:10,392 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-21 11:10:10,392 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-21 11:10:10,393 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-21 11:10:10,393 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-21 11:10:10,393 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-21 11:10:10,393 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-21 11:10:10,393 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-21 11:10:10,393 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-21 11:10:10,393 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-21 11:10:10,394 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-21 11:10:10,394 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-21 11:10:10,394 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-09-21 11:10:10,394 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-21 11:10:10,394 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-21 11:10:10,394 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-21 11:10:10,395 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-09-21 11:10:10,395 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-21 11:10:10,395 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-21 11:10:10,395 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-09-21 11:10:10,395 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-09-21 11:10:10,395 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-21 11:10:10,396 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2020-09-21 11:10:10,396 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-21 11:10:10,396 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-21 11:10:10,396 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 11:10:10,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-21 11:10:10,396 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 11:10:11,465 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 11:10:11,466 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-21 11:10:11,472 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:10:11 BoogieIcfgContainer [2020-09-21 11:10:11,472 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 11:10:11,474 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 11:10:11,474 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 11:10:11,478 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 11:10:11,478 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 11:10:09" (1/3) ... [2020-09-21 11:10:11,479 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b64a484 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:10:11, skipping insertion in model container [2020-09-21 11:10:11,479 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:10:10" (2/3) ... [2020-09-21 11:10:11,480 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b64a484 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:10:11, skipping insertion in model container [2020-09-21 11:10:11,480 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:10:11" (3/3) ... [2020-09-21 11:10:11,482 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product30.cil.c [2020-09-21 11:10:11,495 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 11:10:11,506 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 11:10:11,526 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 11:10:11,559 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 11:10:11,559 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 11:10:11,559 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 11:10:11,559 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 11:10:11,560 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 11:10:11,560 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 11:10:11,560 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 11:10:11,560 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 11:10:11,588 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states. [2020-09-21 11:10:11,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-21 11:10:11,600 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:10:11,601 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:10:11,602 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:10:11,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:10:11,609 INFO L82 PathProgramCache]: Analyzing trace with hash -48518306, now seen corresponding path program 1 times [2020-09-21 11:10:11,620 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:10:11,621 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2057404642] [2020-09-21 11:10:11,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:10:11,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:11,944 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:11,948 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:11,948 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:11,949 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:11,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-21 11:10:11,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:11,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-21 11:10:11,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:11,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:11,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-21 11:10:11,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:11,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:12,388 WARN L193 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 11:10:12,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:10:12,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:12,405 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:12,405 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:12,405 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:12,406 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:12,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:12,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:12,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:12,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:12,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:12,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:12,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:12,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:10:12,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 11:10:12,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:12,477 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:12,478 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:12,478 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:12,478 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:12,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:10:12,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:12,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:12,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:12,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:12,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:12,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:12,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:10:12,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 11:10:12,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:12,484 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:12,485 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:12,485 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:12,485 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:12,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:10:12,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:12,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:12,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:12,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:12,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:12,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:12,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:10:12,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 11:10:12,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:12,491 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:12,492 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:12,492 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:12,492 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:12,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:12,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:12,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:12,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:12,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:12,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:12,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:12,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:10:12,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 11:10:12,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:12,499 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:12,500 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:12,500 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:12,500 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:12,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:10:12,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:12,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:12,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:12,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:12,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:12,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:12,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:10:12,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-09-21 11:10:12,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:12,507 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:12,507 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:12,507 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:12,508 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:12,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:12,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:12,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:12,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:12,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:12,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:10:12,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:12,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:10:12,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-09-21 11:10:12,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:12,515 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:12,515 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:12,515 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:12,516 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:12,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:12,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:12,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:12,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:12,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:12,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:10:12,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:12,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:10:12,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-21 11:10:12,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:12,525 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:12,525 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:12,525 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:12,526 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:12,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:12,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:12,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:12,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:12,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:12,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:10:12,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:12,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:12,547 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 11:10:12,548 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2057404642] [2020-09-21 11:10:12,551 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:10:12,551 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 11:10:12,552 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032378625] [2020-09-21 11:10:12,559 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 11:10:12,559 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:10:12,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 11:10:12,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 11:10:12,581 INFO L87 Difference]: Start difference. First operand 180 states. Second operand 3 states. [2020-09-21 11:10:13,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:10:13,833 INFO L93 Difference]: Finished difference Result 300 states and 394 transitions. [2020-09-21 11:10:13,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 11:10:13,836 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-09-21 11:10:13,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:10:13,854 INFO L225 Difference]: With dead ends: 300 [2020-09-21 11:10:13,854 INFO L226 Difference]: Without dead ends: 162 [2020-09-21 11:10:13,860 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 11:10:13,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-09-21 11:10:13,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 129. [2020-09-21 11:10:13,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-09-21 11:10:13,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 152 transitions. [2020-09-21 11:10:13,960 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 152 transitions. Word has length 52 [2020-09-21 11:10:13,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:10:13,961 INFO L479 AbstractCegarLoop]: Abstraction has 129 states and 152 transitions. [2020-09-21 11:10:13,961 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 11:10:13,961 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 152 transitions. [2020-09-21 11:10:13,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-21 11:10:13,966 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:10:13,966 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] [2020-09-21 11:10:13,966 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 11:10:13,967 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:10:13,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:10:13,967 INFO L82 PathProgramCache]: Analyzing trace with hash 224052050, now seen corresponding path program 1 times [2020-09-21 11:10:13,967 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:10:13,968 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [702519772] [2020-09-21 11:10:13,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:10:14,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:14,032 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:14,033 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:14,033 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:14,033 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:14,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-09-21 11:10:14,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:14,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 11:10:14,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:14,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:10:14,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-09-21 11:10:14,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-21 11:10:14,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:14,351 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 11:10:14,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:10:14,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:14,360 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:14,360 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:14,360 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:14,361 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:14,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:14,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:14,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:14,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:14,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:14,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:14,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:14,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:14,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 11:10:14,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:14,398 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:14,398 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:14,398 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:14,398 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:14,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:10:14,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:14,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:14,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:14,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:14,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:14,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:14,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:14,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 11:10:14,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:14,403 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:14,403 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:14,403 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:14,404 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:14,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:10:14,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:14,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:14,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:14,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:14,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:14,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:14,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:14,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 11:10:14,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:14,408 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:14,408 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:14,408 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:14,409 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:14,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:14,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:14,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:14,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:14,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:14,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:14,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:14,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:14,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 11:10:14,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:14,413 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:14,414 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:14,414 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:14,414 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:14,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:10:14,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:14,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:14,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:14,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:14,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:14,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:14,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:14,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-21 11:10:14,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:14,418 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:14,418 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:14,419 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:14,419 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:14,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:14,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:14,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:14,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:14,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:14,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:10:14,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:14,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:14,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-21 11:10:14,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:14,424 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:14,424 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:14,424 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:14,424 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:14,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:14,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:14,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:14,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:14,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:14,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:10:14,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:14,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:14,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-21 11:10:14,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:14,430 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:14,430 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:14,430 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:14,430 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:14,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:14,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:14,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:14,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:14,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:14,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:10:14,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:14,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:14,440 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 11:10:14,440 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [702519772] [2020-09-21 11:10:14,441 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:10:14,441 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 11:10:14,441 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669668903] [2020-09-21 11:10:14,443 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 11:10:14,443 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:10:14,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 11:10:14,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 11:10:14,444 INFO L87 Difference]: Start difference. First operand 129 states and 152 transitions. Second operand 4 states. [2020-09-21 11:10:14,830 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 11:10:15,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:10:15,790 INFO L93 Difference]: Finished difference Result 229 states and 281 transitions. [2020-09-21 11:10:15,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 11:10:15,791 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-09-21 11:10:15,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:10:15,797 INFO L225 Difference]: With dead ends: 229 [2020-09-21 11:10:15,797 INFO L226 Difference]: Without dead ends: 146 [2020-09-21 11:10:15,799 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 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 11:10:15,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-09-21 11:10:15,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 120. [2020-09-21 11:10:15,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-09-21 11:10:15,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 140 transitions. [2020-09-21 11:10:15,842 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 140 transitions. Word has length 53 [2020-09-21 11:10:15,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:10:15,843 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 140 transitions. [2020-09-21 11:10:15,843 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 11:10:15,843 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 140 transitions. [2020-09-21 11:10:15,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-09-21 11:10:15,845 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:10:15,845 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] [2020-09-21 11:10:15,845 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 11:10:15,846 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:10:15,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:10:15,846 INFO L82 PathProgramCache]: Analyzing trace with hash -1519728538, now seen corresponding path program 1 times [2020-09-21 11:10:15,846 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:10:15,847 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2006963879] [2020-09-21 11:10:15,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:10:15,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:16,285 FATAL L256 erpolLogProxyWrapper]: Difference in size: 4 [2020-09-21 11:10:16,286 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:16,286 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:16,286 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:16,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-21 11:10:16,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:16,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 324 [2020-09-21 11:10:16,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:16,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-21 11:10:16,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:10:16,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-21 11:10:16,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:16,631 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 11:10:16,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:10:16,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:16,710 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:16,711 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:16,711 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:16,711 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:16,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:16,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:16,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-09-21 11:10:16,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:16,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:10:16,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:16,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 11:10:16,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:16,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 11:10:16,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:16,754 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:16,754 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:16,754 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:16,754 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:16,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:10:16,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:16,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:16,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:16,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:10:16,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:16,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 11:10:16,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:16,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 11:10:16,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:16,759 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:16,759 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:16,760 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:16,760 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:16,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:10:16,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:16,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:16,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:16,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:10:16,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:16,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 11:10:16,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:16,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 11:10:16,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:16,766 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:16,766 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:16,766 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:16,766 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:16,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:16,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:16,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:16,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:16,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:10:16,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:16,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 11:10:16,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:16,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 11:10:16,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:16,772 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:16,773 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:16,773 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:16,773 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:16,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:10:16,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:16,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:16,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:16,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:10:16,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:16,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 11:10:16,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:16,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-09-21 11:10:16,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:16,778 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:16,778 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:16,778 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:16,778 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:16,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:16,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:16,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:16,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:16,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:16,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:10:16,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:16,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:16,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-21 11:10:16,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:16,783 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:16,783 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:16,783 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:16,784 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:16,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:16,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:16,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:16,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:16,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:16,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:10:16,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:16,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:16,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-21 11:10:16,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:16,788 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:16,788 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:16,788 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:16,789 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:16,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:16,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:16,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:16,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:16,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:16,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:10:16,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:16,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:16,799 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 11:10:16,799 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2006963879] [2020-09-21 11:10:16,800 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:10:16,800 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 11:10:16,800 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557346044] [2020-09-21 11:10:16,801 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 11:10:16,801 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:10:16,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 11:10:16,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 11:10:16,802 INFO L87 Difference]: Start difference. First operand 120 states and 140 transitions. Second operand 4 states. [2020-09-21 11:10:17,152 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 11:10:18,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:10:18,153 INFO L93 Difference]: Finished difference Result 242 states and 299 transitions. [2020-09-21 11:10:18,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 11:10:18,154 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 58 [2020-09-21 11:10:18,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:10:18,158 INFO L225 Difference]: With dead ends: 242 [2020-09-21 11:10:18,158 INFO L226 Difference]: Without dead ends: 146 [2020-09-21 11:10:18,160 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 19 SyntacticMatches, 1 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 11:10:18,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-09-21 11:10:18,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 120. [2020-09-21 11:10:18,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-09-21 11:10:18,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 139 transitions. [2020-09-21 11:10:18,194 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 139 transitions. Word has length 58 [2020-09-21 11:10:18,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:10:18,195 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 139 transitions. [2020-09-21 11:10:18,195 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 11:10:18,195 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 139 transitions. [2020-09-21 11:10:18,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-09-21 11:10:18,198 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:10:18,198 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] [2020-09-21 11:10:18,198 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 11:10:18,199 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:10:18,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:10:18,199 INFO L82 PathProgramCache]: Analyzing trace with hash -531263457, now seen corresponding path program 1 times [2020-09-21 11:10:18,199 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:10:18,200 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2138133904] [2020-09-21 11:10:18,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:10:18,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:18,712 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:18,712 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:18,713 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:18,713 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:18,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-09-21 11:10:18,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:18,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 465 [2020-09-21 11:10:18,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:18,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-21 11:10:18,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:10:18,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-09-21 11:10:18,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:19,053 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 11:10:19,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:10:19,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:19,115 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:19,115 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:19,115 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:19,116 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:19,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:19,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:19,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-21 11:10:19,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:19,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:10:19,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:19,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 11:10:19,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:19,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 11:10:19,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:19,150 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:19,150 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:19,150 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:19,150 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:19,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:10:19,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:19,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:19,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:19,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:10:19,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:19,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 11:10:19,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:19,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 11:10:19,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:19,155 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:19,155 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:19,155 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:19,155 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:19,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:10:19,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:19,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:19,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:19,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:10:19,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:19,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 11:10:19,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:19,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 11:10:19,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:19,160 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:19,160 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:19,160 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:19,161 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:19,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:19,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:19,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:19,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:19,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:10:19,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:19,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 11:10:19,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:19,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 11:10:19,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:19,165 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:19,169 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:19,169 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:19,169 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:19,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:10:19,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:19,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 11:10:19,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:19,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:10:19,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:19,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 11:10:19,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:19,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-21 11:10:19,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:19,186 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:19,187 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:19,187 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:19,187 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:19,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-21 11:10:19,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:19,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:19,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:19,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:10:19,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:19,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-21 11:10:19,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:19,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 11:10:19,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:19,193 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:19,193 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:19,193 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:19,193 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:19,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-21 11:10:19,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:19,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:19,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:19,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:19,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:19,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:19,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:10:19,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 11:10:19,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:19,198 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:19,198 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:19,198 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:19,199 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:19,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:10:19,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:19,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:19,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:19,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:19,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:19,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:19,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:19,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-21 11:10:19,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:19,203 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:19,204 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:19,204 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:19,204 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:19,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:19,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:19,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:19,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:19,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:10:19,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:19,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 11:10:19,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:19,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-09-21 11:10:19,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:19,211 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:19,211 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:19,211 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:19,212 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:19,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:19,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:19,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 11:10:19,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:19,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:10:19,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:19,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 11:10:19,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:19,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-09-21 11:10:19,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:19,225 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:19,226 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:19,226 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:19,226 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:19,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:19,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:19,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:19,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:19,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:19,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:10:19,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:19,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:19,238 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 11:10:19,239 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2138133904] [2020-09-21 11:10:19,239 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:10:19,239 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-21 11:10:19,240 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773134587] [2020-09-21 11:10:19,240 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-21 11:10:19,240 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:10:19,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-21 11:10:19,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-21 11:10:19,241 INFO L87 Difference]: Start difference. First operand 120 states and 139 transitions. Second operand 8 states. [2020-09-21 11:10:19,652 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 11:10:21,604 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 11:10:22,004 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 11:10:22,314 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 11:10:22,776 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 11:10:23,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:10:23,243 INFO L93 Difference]: Finished difference Result 363 states and 474 transitions. [2020-09-21 11:10:23,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-21 11:10:23,249 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 71 [2020-09-21 11:10:23,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:10:23,253 INFO L225 Difference]: With dead ends: 363 [2020-09-21 11:10:23,253 INFO L226 Difference]: Without dead ends: 267 [2020-09-21 11:10:23,254 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-09-21 11:10:23,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2020-09-21 11:10:23,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 216. [2020-09-21 11:10:23,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-09-21 11:10:23,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 258 transitions. [2020-09-21 11:10:23,323 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 258 transitions. Word has length 71 [2020-09-21 11:10:23,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:10:23,324 INFO L479 AbstractCegarLoop]: Abstraction has 216 states and 258 transitions. [2020-09-21 11:10:23,324 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-21 11:10:23,324 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 258 transitions. [2020-09-21 11:10:23,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-09-21 11:10:23,327 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:10:23,327 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] [2020-09-21 11:10:23,327 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-21 11:10:23,327 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:10:23,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:10:23,328 INFO L82 PathProgramCache]: Analyzing trace with hash -272397377, now seen corresponding path program 1 times [2020-09-21 11:10:23,328 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:10:23,328 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [914998433] [2020-09-21 11:10:23,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:10:23,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:23,606 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:23,606 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:23,606 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:23,606 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:23,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-09-21 11:10:23,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:23,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 234 [2020-09-21 11:10:23,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:23,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-21 11:10:23,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:10:23,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-21 11:10:23,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:10:24,016 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 11:10:24,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:10:24,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:24,081 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:24,081 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:24,081 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:24,082 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:24,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:24,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:24,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-21 11:10:24,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:24,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:10:24,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:24,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 11:10:24,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:24,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 11:10:24,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:24,118 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:24,118 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:24,118 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:24,119 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:24,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:10:24,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:24,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:10:24,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:24,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:10:24,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:24,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 11:10:24,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:24,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 11:10:24,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:24,124 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:24,125 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:24,125 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:24,125 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:24,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:10:24,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:24,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:24,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:24,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:10:24,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:24,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 11:10:24,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:24,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 11:10:24,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:24,133 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:24,133 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:24,134 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:24,134 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:24,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:24,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:24,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 11:10:24,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:24,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:10:24,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:24,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 11:10:24,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:24,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 11:10:24,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:24,142 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:24,142 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:24,143 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:24,143 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:24,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:10:24,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:24,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 11:10:24,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:24,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:10:24,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:24,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 11:10:24,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:24,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-21 11:10:24,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:24,165 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:24,165 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:24,165 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:24,166 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:24,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:24,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:24,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:10:24,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:24,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:10:24,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:24,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 11:10:24,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:24,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-21 11:10:24,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:24,172 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:24,172 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:24,173 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:24,173 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:24,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:24,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:24,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:24,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:24,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:24,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:10:24,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:24,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:24,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-21 11:10:24,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:24,186 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:24,187 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:24,187 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:24,187 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:24,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-21 11:10:24,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:24,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:24,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:24,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:24,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-21 11:10:24,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:24,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:24,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 11:10:24,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:24,194 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:24,194 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:24,195 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:24,195 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:24,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-21 11:10:24,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:24,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:24,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:24,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:24,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:24,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:24,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:10:24,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 11:10:24,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:24,202 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:24,202 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:24,202 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:24,203 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:24,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:10:24,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:24,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:24,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:24,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:24,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:24,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:24,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:24,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-09-21 11:10:24,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:24,207 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:24,208 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:24,208 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:24,208 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:24,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:24,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:24,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:24,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:24,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:24,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:10:24,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:24,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:24,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-09-21 11:10:24,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:24,214 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:24,214 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:24,214 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:24,214 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:24,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:24,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:24,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-09-21 11:10:24,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:24,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:24,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:10:24,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:24,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:24,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-09-21 11:10:24,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:24,220 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:24,220 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:24,220 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:24,221 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:24,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:24,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:24,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:24,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:24,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:24,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:10:24,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:24,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:24,234 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 11:10:24,235 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [914998433] [2020-09-21 11:10:24,235 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:10:24,235 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-21 11:10:24,236 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147207049] [2020-09-21 11:10:24,237 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-21 11:10:24,237 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:10:24,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-21 11:10:24,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-21 11:10:24,238 INFO L87 Difference]: Start difference. First operand 216 states and 258 transitions. Second operand 6 states. [2020-09-21 11:10:24,595 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 11:10:25,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:10:25,275 INFO L93 Difference]: Finished difference Result 348 states and 431 transitions. [2020-09-21 11:10:25,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-21 11:10:25,275 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 79 [2020-09-21 11:10:25,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:10:25,280 INFO L225 Difference]: With dead ends: 348 [2020-09-21 11:10:25,280 INFO L226 Difference]: Without dead ends: 156 [2020-09-21 11:10:25,282 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2020-09-21 11:10:25,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2020-09-21 11:10:25,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 143. [2020-09-21 11:10:25,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-09-21 11:10:25,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 158 transitions. [2020-09-21 11:10:25,313 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 158 transitions. Word has length 79 [2020-09-21 11:10:25,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:10:25,313 INFO L479 AbstractCegarLoop]: Abstraction has 143 states and 158 transitions. [2020-09-21 11:10:25,314 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-21 11:10:25,314 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 158 transitions. [2020-09-21 11:10:25,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-09-21 11:10:25,315 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:10:25,315 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] [2020-09-21 11:10:25,315 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-21 11:10:25,315 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:10:25,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:10:25,316 INFO L82 PathProgramCache]: Analyzing trace with hash -1135016507, now seen corresponding path program 1 times [2020-09-21 11:10:25,316 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:10:25,316 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [614585239] [2020-09-21 11:10:25,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:10:25,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-21 11:10:25,380 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-21 11:10:25,380 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-21 11:10:25,386 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-21 11:10:25,413 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 11:10:25 BoogieIcfgContainer [2020-09-21 11:10:25,413 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 11:10:25,416 INFO L168 Benchmark]: Toolchain (without parser) took 15993.89 ms. Allocated memory was 140.5 MB in the beginning and 481.8 MB in the end (delta: 341.3 MB). Free memory was 101.5 MB in the beginning and 136.0 MB in the end (delta: -34.5 MB). Peak memory consumption was 306.8 MB. Max. memory is 7.1 GB. [2020-09-21 11:10:25,417 INFO L168 Benchmark]: CDTParser took 0.86 ms. Allocated memory is still 140.5 MB. Free memory was 120.8 MB in the beginning and 120.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-21 11:10:25,418 INFO L168 Benchmark]: CACSL2BoogieTranslator took 780.34 ms. Allocated memory was 140.5 MB in the beginning and 204.5 MB in the end (delta: 64.0 MB). Free memory was 100.9 MB in the beginning and 174.0 MB in the end (delta: -73.1 MB). Peak memory consumption was 28.0 MB. Max. memory is 7.1 GB. [2020-09-21 11:10:25,418 INFO L168 Benchmark]: Boogie Preprocessor took 92.65 ms. Allocated memory is still 204.5 MB. Free memory was 174.0 MB in the beginning and 169.9 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. [2020-09-21 11:10:25,419 INFO L168 Benchmark]: RCFGBuilder took 1171.43 ms. Allocated memory was 204.5 MB in the beginning and 237.5 MB in the end (delta: 33.0 MB). Free memory was 169.9 MB in the beginning and 198.3 MB in the end (delta: -28.4 MB). Peak memory consumption was 83.8 MB. Max. memory is 7.1 GB. [2020-09-21 11:10:25,420 INFO L168 Benchmark]: TraceAbstraction took 13939.74 ms. Allocated memory was 237.5 MB in the beginning and 481.8 MB in the end (delta: 244.3 MB). Free memory was 198.3 MB in the beginning and 136.0 MB in the end (delta: 62.3 MB). Peak memory consumption was 306.7 MB. Max. memory is 7.1 GB. [2020-09-21 11:10:25,424 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.86 ms. Allocated memory is still 140.5 MB. Free memory was 120.8 MB in the beginning and 120.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 780.34 ms. Allocated memory was 140.5 MB in the beginning and 204.5 MB in the end (delta: 64.0 MB). Free memory was 100.9 MB in the beginning and 174.0 MB in the end (delta: -73.1 MB). Peak memory consumption was 28.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 92.65 ms. Allocated memory is still 204.5 MB. Free memory was 174.0 MB in the beginning and 169.9 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1171.43 ms. Allocated memory was 204.5 MB in the beginning and 237.5 MB in the end (delta: 33.0 MB). Free memory was 169.9 MB in the beginning and 198.3 MB in the end (delta: -28.4 MB). Peak memory consumption was 83.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 13939.74 ms. Allocated memory was 237.5 MB in the beginning and 481.8 MB in the end (delta: 244.3 MB). Free memory was 198.3 MB in the beginning and 136.0 MB in the end (delta: 62.3 MB). Peak memory consumption was 306.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 883]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L47] int waterLevel = 1; [L48] int methaneLevelCritical = 0; [L136] int cleanupTimeShifts = 4; [L407] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L675] int pumpRunning = 0; [L676] int systemActive = 1; [L215] int retValue_acc ; [L216] int tmp ; [L220] FCALL select_helpers() [L221] FCALL select_features() [L222] CALL, EXPR valid_product() [L914] int retValue_acc ; [L917] retValue_acc = 1 [L918] return (retValue_acc); [L222] RET, EXPR valid_product() [L222] tmp = valid_product() [L224] COND TRUE \read(tmp) [L226] FCALL setup() [L227] CALL runTest() [L206] CALL test() [L606] int splverifierCounter ; [L607] int tmp ; [L608] int tmp___0 ; [L609] int tmp___1 ; [L610] int tmp___2 ; [L613] splverifierCounter = 0 [L615] COND TRUE 1 [L617] COND TRUE splverifierCounter < 4 [L623] tmp = __VERIFIER_nondet_int() [L625] COND TRUE \read(tmp) [L627] CALL waterRise() [L65] COND TRUE waterLevel < 2 [L66] waterLevel = waterLevel + 1 [L627] RET waterRise() [L633] tmp___0 = __VERIFIER_nondet_int() [L635] COND FALSE !(\read(tmp___0)) [L643] tmp___2 = __VERIFIER_nondet_int() [L645] COND FALSE !(\read(tmp___2)) [L651] tmp___1 = __VERIFIER_nondet_int() [L653] COND TRUE \read(tmp___1) [L660] CALL timeShift() [L683] COND FALSE !(\read(pumpRunning)) [L690] COND TRUE \read(systemActive) [L692] CALL processEnvironment() [L738] int tmp ; [L741] COND FALSE !(\read(pumpRunning)) [L756] CALL processEnvironment__wrappee__methaneQuery() [L712] int tmp ; [L715] COND FALSE !(\read(pumpRunning)) [L730] FCALL processEnvironment__wrappee__base() [L756] RET processEnvironment__wrappee__methaneQuery() [L692] RET processEnvironment() [L698] CALL __utac_acc__Specification3_spec__1() [L924] int tmp ; [L925] int tmp___0 ; [L926] int tmp___1 ; [L930] CALL, EXPR isMethaneLevelCritical() [L86] int retValue_acc ; [L89] retValue_acc = methaneLevelCritical [L90] return (retValue_acc); [L930] RET, EXPR isMethaneLevelCritical() [L930] tmp = isMethaneLevelCritical() [L932] COND FALSE !(\read(tmp)) [L936] CALL, EXPR getWaterLevel() [L118] int retValue_acc ; [L121] retValue_acc = waterLevel [L122] return (retValue_acc); [L936] RET, EXPR getWaterLevel() [L936] tmp___0 = getWaterLevel() [L938] COND TRUE tmp___0 == 2 [L940] CALL, EXPR isPumpRunning() [L807] int retValue_acc ; [L810] retValue_acc = pumpRunning [L811] return (retValue_acc); [L940] RET, EXPR isPumpRunning() [L940] tmp___1 = isPumpRunning() [L942] COND FALSE !(\read(tmp___1)) [L946] CALL __automaton_fail() [L883] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 40 procedures, 238 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 13.8s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 9.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 521 SDtfs, 698 SDslu, 219 SDs, 0 SdLazy, 1193 SolverSat, 445 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 135 GetRequests, 108 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 3.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=216occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 5 MinimizatonAttempts, 149 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.6s InterpolantComputationTime, 388 NumberOfCodeBlocks, 388 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 308 ConstructedInterpolants, 0 QuantifiedInterpolants, 88804 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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...