/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --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_product24.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 06:23:19,789 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 06:23:19,793 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 06:23:19,837 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 06:23:19,838 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 06:23:19,848 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 06:23:19,850 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 06:23:19,854 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 06:23:19,856 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 06:23:19,860 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 06:23:19,860 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 06:23:19,862 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 06:23:19,862 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 06:23:19,865 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 06:23:19,868 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 06:23:19,869 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 06:23:19,871 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 06:23:19,872 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 06:23:19,873 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 06:23:19,880 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 06:23:19,882 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 06:23:19,883 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 06:23:19,885 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 06:23:19,886 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 06:23:19,890 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 06:23:19,891 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 06:23:19,891 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 06:23:19,894 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 06:23:19,894 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 06:23:19,896 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 06:23:19,897 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 06:23:19,897 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 06:23:19,898 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 06:23:19,899 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 06:23:19,900 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 06:23:19,901 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 06:23:19,901 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 06:23:19,902 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 06:23:19,902 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 06:23:19,903 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 06:23:19,904 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 06:23:19,905 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 [2020-09-25 06:23:19,951 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 06:23:19,951 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 06:23:19,953 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 06:23:19,953 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 06:23:19,954 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 06:23:19,954 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 06:23:19,954 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 06:23:19,955 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 06:23:19,955 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 06:23:19,955 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 06:23:19,956 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 06:23:19,956 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 06:23:19,957 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 06:23:19,957 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 06:23:19,957 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 06:23:19,957 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 06:23:19,958 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 06:23:19,958 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 06:23:19,958 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 06:23:19,958 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 06:23:19,958 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 06:23:19,959 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 06:23:19,959 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 06:23:19,959 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 06:23:19,959 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 06:23:19,959 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 06:23:19,960 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 06:23:19,960 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 06:23:19,960 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 06:23:19,960 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; [2020-09-25 06:23:20,391 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 06:23:20,414 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 06:23:20,419 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 06:23:20,423 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 06:23:20,424 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 06:23:20,426 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product24.cil.c [2020-09-25 06:23:20,516 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/74cbca6fb/7b89ec75a523407389c04e00d270ea2e/FLAG62e8e2b98 [2020-09-25 06:23:21,110 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 06:23:21,111 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product24.cil.c [2020-09-25 06:23:21,126 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/74cbca6fb/7b89ec75a523407389c04e00d270ea2e/FLAG62e8e2b98 [2020-09-25 06:23:21,414 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/74cbca6fb/7b89ec75a523407389c04e00d270ea2e [2020-09-25 06:23:21,426 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 06:23:21,431 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 06:23:21,432 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 06:23:21,433 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 06:23:21,437 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 06:23:21,438 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:23:21" (1/1) ... [2020-09-25 06:23:21,442 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75e6ef35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:23:21, skipping insertion in model container [2020-09-25 06:23:21,442 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:23:21" (1/1) ... [2020-09-25 06:23:21,451 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 06:23:21,505 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 06:23:21,927 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:23:21,942 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 06:23:22,039 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:23:22,079 INFO L208 MainTranslator]: Completed translation [2020-09-25 06:23:22,080 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:23:22 WrapperNode [2020-09-25 06:23:22,080 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 06:23:22,081 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 06:23:22,081 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 06:23:22,081 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 06:23:22,095 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:23:22" (1/1) ... [2020-09-25 06:23:22,096 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:23:22" (1/1) ... [2020-09-25 06:23:22,117 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:23:22" (1/1) ... [2020-09-25 06:23:22,118 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:23:22" (1/1) ... [2020-09-25 06:23:22,152 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:23:22" (1/1) ... [2020-09-25 06:23:22,165 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:23:22" (1/1) ... [2020-09-25 06:23:22,170 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:23:22" (1/1) ... [2020-09-25 06:23:22,178 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 06:23:22,179 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 06:23:22,179 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 06:23:22,179 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 06:23:22,180 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:23:22" (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 [2020-09-25 06:23:22,260 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 06:23:22,260 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 06:23:22,261 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-25 06:23:22,261 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-25 06:23:22,261 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-25 06:23:22,261 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-25 06:23:22,261 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-09-25 06:23:22,262 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-25 06:23:22,263 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-25 06:23:22,263 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-25 06:23:22,263 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-25 06:23:22,263 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-25 06:23:22,263 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-25 06:23:22,263 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-09-25 06:23:22,264 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-09-25 06:23:22,265 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-09-25 06:23:22,265 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-25 06:23:22,265 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-09-25 06:23:22,265 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-25 06:23:22,266 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-25 06:23:22,266 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-25 06:23:22,266 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-25 06:23:22,266 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 06:23:22,266 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-25 06:23:22,267 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-25 06:23:22,267 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-25 06:23:22,268 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-25 06:23:22,268 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-25 06:23:22,268 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-25 06:23:22,268 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-25 06:23:22,268 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-25 06:23:22,268 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-25 06:23:22,269 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-25 06:23:22,269 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-25 06:23:22,269 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-25 06:23:22,269 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-09-25 06:23:22,269 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-25 06:23:22,269 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-25 06:23:22,269 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-25 06:23:22,270 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-25 06:23:22,270 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 06:23:22,270 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 06:23:22,270 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-25 06:23:22,270 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-25 06:23:22,270 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-25 06:23:22,271 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-25 06:23:22,271 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-25 06:23:22,271 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-09-25 06:23:22,271 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-25 06:23:22,272 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-25 06:23:22,272 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-25 06:23:22,272 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-25 06:23:22,272 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-25 06:23:22,273 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-09-25 06:23:22,273 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-09-25 06:23:22,273 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-09-25 06:23:22,273 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-25 06:23:22,273 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-25 06:23:22,273 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-09-25 06:23:22,273 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-09-25 06:23:22,274 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-25 06:23:22,274 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 06:23:22,274 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-25 06:23:22,274 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-25 06:23:22,274 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-25 06:23:22,274 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-25 06:23:22,275 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-25 06:23:22,275 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-25 06:23:22,275 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-25 06:23:22,275 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-25 06:23:22,276 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-25 06:23:22,277 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-25 06:23:22,277 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-25 06:23:22,278 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 06:23:22,278 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-25 06:23:22,278 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 06:23:22,278 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 06:23:22,278 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-25 06:23:22,278 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 06:23:22,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 06:23:22,279 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 06:23:22,279 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 06:23:22,280 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-25 06:23:22,280 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 06:23:22,280 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-25 06:23:22,280 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-25 06:23:22,280 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 06:23:22,280 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-25 06:23:22,281 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-25 06:23:22,281 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-25 06:23:22,281 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-25 06:23:22,281 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 06:23:22,281 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-25 06:23:22,281 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 06:23:23,410 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 06:23:23,410 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-25 06:23:23,417 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:23:23 BoogieIcfgContainer [2020-09-25 06:23:23,418 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 06:23:23,419 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 06:23:23,419 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 06:23:23,423 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 06:23:23,423 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 06:23:21" (1/3) ... [2020-09-25 06:23:23,424 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@475f4599 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:23:23, skipping insertion in model container [2020-09-25 06:23:23,424 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:23:22" (2/3) ... [2020-09-25 06:23:23,425 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@475f4599 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:23:23, skipping insertion in model container [2020-09-25 06:23:23,425 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:23:23" (3/3) ... [2020-09-25 06:23:23,427 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product24.cil.c [2020-09-25 06:23:23,438 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 06:23:23,449 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 06:23:23,472 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 06:23:23,506 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 06:23:23,507 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 06:23:23,507 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 06:23:23,507 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 06:23:23,507 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 06:23:23,507 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 06:23:23,508 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 06:23:23,508 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 06:23:23,540 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states. [2020-09-25 06:23:23,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-09-25 06:23:23,561 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:23:23,562 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:23:23,563 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:23:23,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:23:23,572 INFO L82 PathProgramCache]: Analyzing trace with hash -1912594641, now seen corresponding path program 1 times [2020-09-25 06:23:23,583 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:23:23,584 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1542345632] [2020-09-25 06:23:23,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:23:23,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:23:24,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:23:24,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:23:25,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:23:28,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:23:28,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-09-25 06:23:28,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 06:23:28,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-09-25 06:23:28,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:23:28,977 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:23:28,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:23:28,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 129 [2020-09-25 06:23:28,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:23:28,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 06:23:29,401 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-25 06:23:29,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:23:29,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:23:29,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:23:29,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:23:29,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 06:23:29,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:23:29,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-09-25 06:23:29,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:23:29,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:23:29,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:23:29,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:23:29,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:23:29,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:23:29,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 06:23:29,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:23:29,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:23:29,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:23:29,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:23:29,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:23:29,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 06:23:29,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:23:29,603 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:23:29,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:23:29,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:23:29,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:23:29,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 06:23:29,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 06:23:29,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:23:29,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:23:29,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:23:29,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:23:29,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:23:29,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 06:23:29,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:23:29,616 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:23:29,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:23:29,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:23:29,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:23:29,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:23:29,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-25 06:23:29,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:23:29,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:23:29,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:23:29,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:23:29,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:23:29,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 06:23:29,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:23:29,630 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:23:29,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:23:29,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:23:29,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:23:29,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:23:29,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-25 06:23:29,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:23:29,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:23:29,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:23:29,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:23:29,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:23:29,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 06:23:29,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:23:29,638 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:23:29,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:23:29,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:23:29,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:23:29,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:23:29,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-09-25 06:23:29,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:23:29,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:23:29,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:23:29,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:23:29,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:23:29,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 06:23:29,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:23:29,646 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:23:29,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:23:29,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 06:23:29,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:23:29,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:23:29,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-09-25 06:23:29,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:23:29,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:23:29,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:23:29,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:23:29,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:23:29,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 06:23:29,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:23:29,656 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:23:29,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:23:29,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 06:23:29,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:23:29,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:23:29,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-09-25 06:23:29,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:23:29,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:23:29,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:23:29,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:23:29,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:23:29,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 06:23:29,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:23:29,669 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:23:29,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:23:29,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 06:23:29,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:23:29,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:23:29,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:23:29,736 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1542345632] [2020-09-25 06:23:29,738 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:23:29,738 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 06:23:29,739 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853357977] [2020-09-25 06:23:29,746 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 06:23:29,746 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:23:29,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 06:23:29,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 06:23:29,770 INFO L87 Difference]: Start difference. First operand 316 states. Second operand 3 states. [2020-09-25 06:23:31,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:23:31,167 INFO L93 Difference]: Finished difference Result 500 states and 599 transitions. [2020-09-25 06:23:31,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 06:23:31,170 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 153 [2020-09-25 06:23:31,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:23:31,195 INFO L225 Difference]: With dead ends: 500 [2020-09-25 06:23:31,195 INFO L226 Difference]: Without dead ends: 309 [2020-09-25 06:23:31,201 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 [2020-09-25 06:23:31,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2020-09-25 06:23:31,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 265. [2020-09-25 06:23:31,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 265 states. [2020-09-25 06:23:31,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 290 transitions. [2020-09-25 06:23:31,331 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 290 transitions. Word has length 153 [2020-09-25 06:23:31,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:23:31,341 INFO L479 AbstractCegarLoop]: Abstraction has 265 states and 290 transitions. [2020-09-25 06:23:31,341 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 06:23:31,341 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 290 transitions. [2020-09-25 06:23:31,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-09-25 06:23:31,350 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:23:31,350 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:23:31,351 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 06:23:31,354 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:23:31,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:23:31,355 INFO L82 PathProgramCache]: Analyzing trace with hash -1080326154, now seen corresponding path program 1 times [2020-09-25 06:23:31,355 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:23:31,355 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1310965000] [2020-09-25 06:23:31,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:23:31,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:23:31,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:23:31,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:23:33,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:23:36,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:23:36,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-09-25 06:23:36,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 06:23:36,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-25 06:23:36,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:23:36,431 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:23:36,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:23:36,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 128 [2020-09-25 06:23:36,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 06:23:36,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:23:36,766 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-25 06:23:36,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:23:36,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:23:36,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:23:36,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:23:36,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 06:23:36,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:23:36,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-09-25 06:23:36,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:23:36,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:23:36,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:23:36,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:23:36,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:23:36,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:23:36,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 06:23:36,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:23:36,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:23:36,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:23:36,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:23:36,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:23:36,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 06:23:36,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:23:36,920 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:23:36,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:23:36,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:23:36,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:23:36,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:23:36,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 06:23:36,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:23:36,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:23:36,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:23:36,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:23:36,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:23:36,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 06:23:36,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:23:36,926 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:23:36,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:23:36,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:23:36,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:23:36,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:23:36,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-25 06:23:36,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:23:36,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:23:36,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:23:36,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:23:36,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:23:36,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 06:23:36,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:23:36,934 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:23:36,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:23:36,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:23:36,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:23:36,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:23:36,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-25 06:23:36,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:23:36,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:23:36,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:23:36,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:23:36,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:23:36,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 06:23:36,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:23:36,940 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:23:36,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:23:36,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:23:36,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:23:36,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:23:36,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-09-25 06:23:36,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:23:36,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:23:36,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:23:36,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:23:36,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:23:36,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 06:23:36,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:23:36,947 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:23:36,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:23:36,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 06:23:36,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:23:36,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:23:36,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-09-25 06:23:36,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:23:36,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:23:36,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:23:36,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:23:36,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:23:36,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 06:23:36,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:23:36,956 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:23:36,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:23:36,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 06:23:36,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:23:36,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:23:36,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-09-25 06:23:36,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:23:36,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:23:36,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:23:36,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:23:36,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:23:36,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 06:23:36,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:23:36,963 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:23:36,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:23:36,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 06:23:36,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:23:36,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:23:36,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:23:36,990 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1310965000] [2020-09-25 06:23:36,990 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:23:36,990 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 06:23:36,991 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848646879] [2020-09-25 06:23:36,994 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 06:23:36,994 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:23:36,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 06:23:36,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 06:23:36,994 INFO L87 Difference]: Start difference. First operand 265 states and 290 transitions. Second operand 4 states. [2020-09-25 06:23:37,570 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-25 06:23:38,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:23:38,632 INFO L93 Difference]: Finished difference Result 407 states and 462 transitions. [2020-09-25 06:23:38,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 06:23:38,633 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 154 [2020-09-25 06:23:38,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:23:38,637 INFO L225 Difference]: With dead ends: 407 [2020-09-25 06:23:38,637 INFO L226 Difference]: Without dead ends: 292 [2020-09-25 06:23:38,639 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 [2020-09-25 06:23:38,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2020-09-25 06:23:38,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 255. [2020-09-25 06:23:38,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255 states. [2020-09-25 06:23:38,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 277 transitions. [2020-09-25 06:23:38,692 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 277 transitions. Word has length 154 [2020-09-25 06:23:38,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:23:38,694 INFO L479 AbstractCegarLoop]: Abstraction has 255 states and 277 transitions. [2020-09-25 06:23:38,694 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 06:23:38,695 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 277 transitions. [2020-09-25 06:23:38,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-09-25 06:23:38,699 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:23:38,700 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:23:38,700 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 06:23:38,700 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:23:38,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:23:38,701 INFO L82 PathProgramCache]: Analyzing trace with hash 240826418, now seen corresponding path program 1 times [2020-09-25 06:23:38,701 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:23:38,701 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2010337391] [2020-09-25 06:23:38,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:23:38,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:23:38,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:23:39,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:23:41,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:23:41,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-09-25 06:23:41,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:23:41,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2869 [2020-09-25 06:23:41,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:23:41,633 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:23:41,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:23:41,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 146 [2020-09-25 06:23:41,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 06:23:41,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:23:41,905 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-25 06:23:41,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:23:41,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:23:41,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:23:42,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:23:42,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 06:23:42,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:23:42,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-09-25 06:23:42,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:23:42,012 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:23:42,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:23:42,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:23:42,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:23:42,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:23:42,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 06:23:42,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:23:42,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:23:42,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:23:42,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:23:42,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:23:42,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 06:23:42,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:23:42,050 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:23:42,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:23:42,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:23:42,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:23:42,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:23:42,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 06:23:42,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:23:42,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:23:42,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:23:42,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:23:42,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:23:42,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 06:23:42,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:23:42,057 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:23:42,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:23:42,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:23:42,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:23:42,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:23:42,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-25 06:23:42,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:23:42,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:23:42,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:23:42,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:23:42,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:23:42,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 06:23:42,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:23:42,065 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:23:42,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:23:42,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:23:42,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:23:42,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 06:23:42,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-25 06:23:42,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:23:42,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:23:42,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:23:42,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:23:42,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:23:42,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 06:23:42,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:23:42,072 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:23:42,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:23:42,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:23:42,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:23:42,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:23:42,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-25 06:23:42,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:23:42,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:23:42,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:23:42,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 06:23:42,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:23:42,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 06:23:42,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:23:42,087 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:23:42,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:23:42,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:23:42,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-25 06:23:42,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:23:42,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-09-25 06:23:42,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:23:42,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:23:42,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:23:42,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:23:42,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:23:42,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 06:23:42,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:23:42,099 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:23:42,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:23:42,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 06:23:42,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:23:42,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:23:42,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-09-25 06:23:42,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:23:42,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:23:42,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:23:42,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:23:42,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:23:42,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 06:23:42,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:23:42,106 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:23:42,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:23:42,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 06:23:42,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:23:42,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:23:42,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-09-25 06:23:42,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:23:42,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:23:42,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:23:42,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:23:42,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:23:42,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 06:23:42,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:23:42,112 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:23:42,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:23:42,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 06:23:42,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:23:42,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:23:42,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:23:42,145 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2010337391] [2020-09-25 06:23:42,145 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:23:42,145 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 06:23:42,146 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945985145] [2020-09-25 06:23:42,147 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:23:42,147 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:23:42,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:23:42,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:23:42,149 INFO L87 Difference]: Start difference. First operand 255 states and 277 transitions. Second operand 5 states. [2020-09-25 06:23:42,743 WARN L193 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-25 06:23:44,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:23:44,608 INFO L93 Difference]: Finished difference Result 615 states and 718 transitions. [2020-09-25 06:23:44,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 06:23:44,608 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 167 [2020-09-25 06:23:44,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:23:44,615 INFO L225 Difference]: With dead ends: 615 [2020-09-25 06:23:44,615 INFO L226 Difference]: Without dead ends: 470 [2020-09-25 06:23:44,616 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:23:44,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 470 states. [2020-09-25 06:23:44,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 470 to 390. [2020-09-25 06:23:44,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 390 states. [2020-09-25 06:23:44,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 435 transitions. [2020-09-25 06:23:44,699 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 435 transitions. Word has length 167 [2020-09-25 06:23:44,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:23:44,700 INFO L479 AbstractCegarLoop]: Abstraction has 390 states and 435 transitions. [2020-09-25 06:23:44,700 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 06:23:44,700 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 435 transitions. [2020-09-25 06:23:44,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-09-25 06:23:44,706 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:23:44,707 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:23:44,707 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 06:23:44,707 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:23:44,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:23:44,707 INFO L82 PathProgramCache]: Analyzing trace with hash -1420890141, now seen corresponding path program 1 times [2020-09-25 06:23:44,708 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:23:44,708 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2043850729] [2020-09-25 06:23:44,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:23:44,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:23:44,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:23:46,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:23:46,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 205 [2020-09-25 06:23:46,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:23:46,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1649 [2020-09-25 06:23:46,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:23:46,421 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:23:46,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 06:23:46,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-09-25 06:23:46,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-09-25 06:23:46,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:23:46,836 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-25 06:23:46,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:23:46,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:23:46,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:23:47,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:23:47,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 06:23:47,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:23:47,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 232 [2020-09-25 06:23:47,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:23:47,132 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:23:47,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:23:47,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:23:47,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 06:23:47,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:23:47,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 06:23:47,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:23:47,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:23:47,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:23:47,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:23:47,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:23:47,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 06:23:47,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:23:47,212 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:23:47,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:23:47,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:23:47,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 06:23:47,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:23:47,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 06:23:47,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:23:47,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:23:47,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:23:47,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:23:47,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:23:47,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 06:23:47,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:23:47,220 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:23:47,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:23:47,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:23:47,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 06:23:47,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:23:47,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-25 06:23:47,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:23:47,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:23:47,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:23:47,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:23:47,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:23:47,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 06:23:47,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:23:47,235 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:23:47,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:23:47,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:23:47,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 06:23:47,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:23:47,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-25 06:23:47,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:23:47,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:23:47,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:23:47,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:23:47,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:23:47,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 06:23:47,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:23:47,244 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:23:47,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:23:47,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:23:47,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 06:23:47,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:23:47,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-09-25 06:23:47,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:23:47,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:23:47,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:23:47,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:23:47,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:23:47,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 06:23:47,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:23:47,272 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:23:47,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:23:47,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:23:47,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:23:47,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:23:47,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-09-25 06:23:47,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:23:47,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:23:47,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:23:47,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:23:47,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:23:47,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 06:23:47,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:23:47,283 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:23:47,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:23:47,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:23:47,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 06:23:47,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:23:47,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-09-25 06:23:47,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:23:47,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:23:47,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:23:47,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:23:47,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:23:47,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 06:23:47,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:23:47,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:23:47,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:23:47,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:23:47,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 06:23:47,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:23:47,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-09-25 06:23:47,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:23:47,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:23:47,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:23:47,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:23:47,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:23:47,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 06:23:47,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:23:47,346 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:23:47,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:23:47,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 06:23:47,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:23:47,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:23:47,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:23:47,441 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2043850729] [2020-09-25 06:23:47,441 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:23:47,442 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-25 06:23:47,442 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429153586] [2020-09-25 06:23:47,443 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 06:23:47,443 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:23:47,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 06:23:47,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-09-25 06:23:47,444 INFO L87 Difference]: Start difference. First operand 390 states and 435 transitions. Second operand 10 states. [2020-09-25 06:23:47,981 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-25 06:23:50,279 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 06:23:50,610 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-25 06:23:50,968 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-25 06:23:51,306 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-25 06:23:51,548 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-25 06:23:51,846 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 06:23:52,150 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-25 06:23:52,610 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 06:23:53,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:23:53,483 INFO L93 Difference]: Finished difference Result 1056 states and 1281 transitions. [2020-09-25 06:23:53,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 06:23:53,484 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 172 [2020-09-25 06:23:53,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:23:53,490 INFO L225 Difference]: With dead ends: 1056 [2020-09-25 06:23:53,490 INFO L226 Difference]: Without dead ends: 776 [2020-09-25 06:23:53,492 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2020-09-25 06:23:53,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 776 states. [2020-09-25 06:23:53,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 776 to 667. [2020-09-25 06:23:53,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 667 states. [2020-09-25 06:23:53,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 667 states to 667 states and 767 transitions. [2020-09-25 06:23:53,614 INFO L78 Accepts]: Start accepts. Automaton has 667 states and 767 transitions. Word has length 172 [2020-09-25 06:23:53,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:23:53,614 INFO L479 AbstractCegarLoop]: Abstraction has 667 states and 767 transitions. [2020-09-25 06:23:53,614 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 06:23:53,615 INFO L276 IsEmpty]: Start isEmpty. Operand 667 states and 767 transitions. [2020-09-25 06:23:53,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-09-25 06:23:53,619 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:23:53,619 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:23:53,619 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 06:23:53,619 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:23:53,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:23:53,620 INFO L82 PathProgramCache]: Analyzing trace with hash -557067660, now seen corresponding path program 1 times [2020-09-25 06:23:53,620 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:23:53,620 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1130172490] [2020-09-25 06:23:53,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:23:53,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 06:23:53,684 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 06:23:53,685 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 06:23:53,690 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 06:23:53,716 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 06:23:53 BoogieIcfgContainer [2020-09-25 06:23:53,716 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 06:23:53,718 INFO L168 Benchmark]: Toolchain (without parser) took 32291.03 ms. Allocated memory was 140.0 MB in the beginning and 617.6 MB in the end (delta: 477.6 MB). Free memory was 102.6 MB in the beginning and 247.8 MB in the end (delta: -145.2 MB). Peak memory consumption was 332.4 MB. Max. memory is 7.1 GB. [2020-09-25 06:23:53,719 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 06:23:53,720 INFO L168 Benchmark]: CACSL2BoogieTranslator took 648.36 ms. Allocated memory was 140.0 MB in the beginning and 203.4 MB in the end (delta: 63.4 MB). Free memory was 101.9 MB in the beginning and 169.6 MB in the end (delta: -67.7 MB). Peak memory consumption was 26.0 MB. Max. memory is 7.1 GB. [2020-09-25 06:23:53,721 INFO L168 Benchmark]: Boogie Preprocessor took 96.99 ms. Allocated memory is still 203.4 MB. Free memory was 169.6 MB in the beginning and 164.9 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.7 MB. Max. memory is 7.1 GB. [2020-09-25 06:23:53,722 INFO L168 Benchmark]: RCFGBuilder took 1239.36 ms. Allocated memory was 203.4 MB in the beginning and 237.0 MB in the end (delta: 33.6 MB). Free memory was 164.9 MB in the beginning and 174.7 MB in the end (delta: -9.8 MB). Peak memory consumption was 80.9 MB. Max. memory is 7.1 GB. [2020-09-25 06:23:53,723 INFO L168 Benchmark]: TraceAbstraction took 30297.38 ms. Allocated memory was 237.0 MB in the beginning and 617.6 MB in the end (delta: 380.6 MB). Free memory was 173.3 MB in the beginning and 247.8 MB in the end (delta: -74.5 MB). Peak memory consumption was 306.1 MB. Max. memory is 7.1 GB. [2020-09-25 06:23:53,727 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 648.36 ms. Allocated memory was 140.0 MB in the beginning and 203.4 MB in the end (delta: 63.4 MB). Free memory was 101.9 MB in the beginning and 169.6 MB in the end (delta: -67.7 MB). Peak memory consumption was 26.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 96.99 ms. Allocated memory is still 203.4 MB. Free memory was 169.6 MB in the beginning and 164.9 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1239.36 ms. Allocated memory was 203.4 MB in the beginning and 237.0 MB in the end (delta: 33.6 MB). Free memory was 164.9 MB in the beginning and 174.7 MB in the end (delta: -9.8 MB). Peak memory consumption was 80.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 30297.38 ms. Allocated memory was 237.0 MB in the beginning and 617.6 MB in the end (delta: 380.6 MB). Free memory was 173.3 MB in the beginning and 247.8 MB in the end (delta: -74.5 MB). Peak memory consumption was 306.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 44]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L60] int pumpRunning = 0; [L61] int systemActive = 1; [L369] int cleanupTimeShifts = 4; [L637] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L834] int waterLevel = 1; [L835] int methaneLevelCritical = 0; [L445] int retValue_acc ; [L446] int tmp ; [L450] FCALL select_helpers() [L451] FCALL select_features() [L452] CALL, EXPR valid_product() [L949] int retValue_acc ; [L952] retValue_acc = 1 [L953] return (retValue_acc); [L452] RET, EXPR valid_product() [L452] tmp = valid_product() [L454] COND TRUE \read(tmp) [L456] FCALL setup() [L457] CALL runTest() [L436] CALL test() [L266] int splverifierCounter ; [L267] int tmp ; [L268] int tmp___0 ; [L269] int tmp___1 ; [L270] int tmp___2 ; [L273] splverifierCounter = 0 [L275] COND TRUE 1 [L277] COND TRUE splverifierCounter < 4 [L283] tmp = __VERIFIER_nondet_int() [L285] COND TRUE \read(tmp) [L287] CALL waterRise() [L852] COND TRUE waterLevel < 2 [L853] waterLevel = waterLevel + 1 [L287] RET waterRise() [L293] tmp___0 = __VERIFIER_nondet_int() [L295] COND FALSE !(\read(tmp___0)) [L303] tmp___2 = __VERIFIER_nondet_int() [L305] COND FALSE !(\read(tmp___2)) [L311] tmp___1 = __VERIFIER_nondet_int() [L313] COND TRUE \read(tmp___1) [L315] CALL stopSystem() [L242] COND FALSE !(\read(pumpRunning)) [L249] systemActive = 0 [L315] RET stopSystem() [L322] CALL timeShift() [L68] COND FALSE !(\read(pumpRunning)) [L75] COND FALSE !(\read(systemActive)) [L83] CALL __utac_acc__Specification3_spec__1() [L336] int tmp ; [L337] int tmp___0 ; [L338] int tmp___1 ; [L342] CALL, EXPR isMethaneLevelCritical() [L873] int retValue_acc ; [L876] retValue_acc = methaneLevelCritical [L877] return (retValue_acc); [L342] RET, EXPR isMethaneLevelCritical() [L342] tmp = isMethaneLevelCritical() [L344] COND FALSE !(\read(tmp)) [L348] CALL, EXPR getWaterLevel() [L905] int retValue_acc ; [L908] retValue_acc = waterLevel [L909] return (retValue_acc); [L348] RET, EXPR getWaterLevel() [L348] tmp___0 = getWaterLevel() [L350] COND TRUE tmp___0 == 2 [L352] CALL, EXPR isPumpRunning() [L175] int retValue_acc ; [L178] retValue_acc = pumpRunning [L179] return (retValue_acc); [L352] RET, EXPR isPumpRunning() [L352] tmp___1 = isPumpRunning() [L354] COND FALSE !(\read(tmp___1)) [L358] CALL __automaton_fail() [L44] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 40 procedures, 631 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 30.1s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 11.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1028 SDtfs, 1437 SDslu, 893 SDs, 0 SdLazy, 2245 SolverSat, 528 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 7.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 103 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 4.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=667occurred 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: 0.3s AutomataMinimizationTime, 4 MinimizatonAttempts, 270 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 17.2s InterpolantComputationTime, 823 NumberOfCodeBlocks, 823 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 642 ConstructedInterpolants, 0 QuantifiedInterpolants, 254693 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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...