/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product32.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 16:54:23,777 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 16:54:23,783 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 16:54:23,828 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 16:54:23,828 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 16:54:23,830 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 16:54:23,831 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 16:54:23,833 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 16:54:23,835 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 16:54:23,836 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 16:54:23,838 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 16:54:23,839 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 16:54:23,839 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 16:54:23,841 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 16:54:23,842 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 16:54:23,843 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 16:54:23,844 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 16:54:23,846 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 16:54:23,848 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 16:54:23,850 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 16:54:23,851 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 16:54:23,853 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 16:54:23,854 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 16:54:23,855 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 16:54:23,858 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 16:54:23,858 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 16:54:23,858 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 16:54:23,859 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 16:54:23,860 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 16:54:23,861 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 16:54:23,861 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 16:54:23,862 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 16:54:23,863 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 16:54:23,864 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 16:54:23,866 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 16:54:23,866 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 16:54:23,867 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 16:54:23,867 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 16:54:23,867 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 16:54:23,869 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 16:54:23,869 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 16:54:23,870 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 16:54:23,897 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 16:54:23,898 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 16:54:23,899 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 16:54:23,899 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 16:54:23,900 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 16:54:23,900 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 16:54:23,900 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 16:54:23,900 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 16:54:23,900 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 16:54:23,901 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 16:54:23,901 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 16:54:23,901 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 16:54:23,901 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 16:54:23,901 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 16:54:23,902 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 16:54:23,902 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 16:54:23,902 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 16:54:23,902 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 16:54:23,903 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 16:54:23,903 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 16:54:23,903 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 16:54:23,903 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 16:54:23,903 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 16:54:23,904 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 16:54:23,904 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 16:54:23,904 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 16:54:23,904 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 16:54:23,904 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 16:54:23,905 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 16:54:23,905 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;log-additional-information=true; [2020-09-24 16:54:24,368 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 16:54:24,392 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 16:54:24,396 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 16:54:24,399 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 16:54:24,400 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 16:54:24,402 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product32.cil.c [2020-09-24 16:54:24,504 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f86c36ade/ccbe7dd3474e421d8f73785897ae6728/FLAG629b78e87 [2020-09-24 16:54:25,146 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 16:54:25,149 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product32.cil.c [2020-09-24 16:54:25,170 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f86c36ade/ccbe7dd3474e421d8f73785897ae6728/FLAG629b78e87 [2020-09-24 16:54:25,429 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f86c36ade/ccbe7dd3474e421d8f73785897ae6728 [2020-09-24 16:54:25,443 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 16:54:25,448 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 16:54:25,450 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 16:54:25,450 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 16:54:25,455 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 16:54:25,456 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 04:54:25" (1/1) ... [2020-09-24 16:54:25,462 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@630c7dac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:54:25, skipping insertion in model container [2020-09-24 16:54:25,462 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 04:54:25" (1/1) ... [2020-09-24 16:54:25,473 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 16:54:25,531 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 16:54:26,067 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 16:54:26,083 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 16:54:26,164 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 16:54:26,209 INFO L208 MainTranslator]: Completed translation [2020-09-24 16:54:26,209 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:54:26 WrapperNode [2020-09-24 16:54:26,210 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 16:54:26,211 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 16:54:26,211 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 16:54:26,211 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 16:54:26,229 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:54:26" (1/1) ... [2020-09-24 16:54:26,229 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:54:26" (1/1) ... [2020-09-24 16:54:26,250 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:54:26" (1/1) ... [2020-09-24 16:54:26,251 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:54:26" (1/1) ... [2020-09-24 16:54:26,284 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:54:26" (1/1) ... [2020-09-24 16:54:26,302 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:54:26" (1/1) ... [2020-09-24 16:54:26,311 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:54:26" (1/1) ... [2020-09-24 16:54:26,330 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 16:54:26,331 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 16:54:26,331 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 16:54:26,331 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 16:54:26,335 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:54:26" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 16:54:26,433 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 16:54:26,434 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 16:54:26,434 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-24 16:54:26,434 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-09-24 16:54:26,435 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-24 16:54:26,435 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-24 16:54:26,435 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-24 16:54:26,435 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-24 16:54:26,435 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-24 16:54:26,436 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-24 16:54:26,436 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-24 16:54:26,436 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-24 16:54:26,436 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-24 16:54:26,436 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 16:54:26,437 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-24 16:54:26,437 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-24 16:54:26,437 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-24 16:54:26,437 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-24 16:54:26,437 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-24 16:54:26,438 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-24 16:54:26,438 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-09-24 16:54:26,438 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-24 16:54:26,438 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-24 16:54:26,438 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-24 16:54:26,439 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-24 16:54:26,439 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-24 16:54:26,439 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-24 16:54:26,439 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-24 16:54:26,439 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-24 16:54:26,439 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-09-24 16:54:26,440 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-24 16:54:26,440 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2020-09-24 16:54:26,440 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-24 16:54:26,440 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-24 16:54:26,440 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-24 16:54:26,440 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-24 16:54:26,441 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-24 16:54:26,441 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-09-24 16:54:26,441 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-09-24 16:54:26,441 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-09-24 16:54:26,441 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-24 16:54:26,441 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 16:54:26,442 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 16:54:26,442 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-24 16:54:26,442 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-24 16:54:26,442 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-24 16:54:26,442 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-24 16:54:26,442 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-09-24 16:54:26,442 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-24 16:54:26,443 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-24 16:54:26,443 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-24 16:54:26,443 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-24 16:54:26,443 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-24 16:54:26,443 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-24 16:54:26,443 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-24 16:54:26,444 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-24 16:54:26,444 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-24 16:54:26,444 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-24 16:54:26,444 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-24 16:54:26,444 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-24 16:54:26,444 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-24 16:54:26,445 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 16:54:26,445 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-24 16:54:26,445 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-24 16:54:26,445 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-24 16:54:26,445 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-09-24 16:54:26,445 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 16:54:26,445 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-24 16:54:26,446 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 16:54:26,446 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-24 16:54:26,446 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-24 16:54:26,446 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 16:54:26,446 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-24 16:54:26,446 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 16:54:26,447 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-24 16:54:26,447 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-24 16:54:26,447 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 16:54:26,447 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-24 16:54:26,447 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-24 16:54:26,447 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 16:54:26,448 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-24 16:54:26,448 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-24 16:54:26,448 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-24 16:54:26,448 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-24 16:54:26,448 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-24 16:54:26,449 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-09-24 16:54:26,449 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-09-24 16:54:26,449 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-24 16:54:26,449 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-24 16:54:26,449 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-09-24 16:54:26,449 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-09-24 16:54:26,449 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-24 16:54:26,450 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2020-09-24 16:54:26,450 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 16:54:26,450 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-24 16:54:26,450 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 16:54:27,612 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 16:54:27,612 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-24 16:54:27,620 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 04:54:27 BoogieIcfgContainer [2020-09-24 16:54:27,620 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 16:54:27,621 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 16:54:27,621 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 16:54:27,625 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 16:54:27,626 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 04:54:25" (1/3) ... [2020-09-24 16:54:27,627 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38a4fbc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 04:54:27, skipping insertion in model container [2020-09-24 16:54:27,627 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:54:26" (2/3) ... [2020-09-24 16:54:27,627 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38a4fbc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 04:54:27, skipping insertion in model container [2020-09-24 16:54:27,628 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 04:54:27" (3/3) ... [2020-09-24 16:54:27,630 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product32.cil.c [2020-09-24 16:54:27,642 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 16:54:27,654 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 16:54:27,679 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 16:54:27,717 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 16:54:27,717 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 16:54:27,717 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 16:54:27,717 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 16:54:27,718 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 16:54:27,718 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 16:54:27,718 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 16:54:27,718 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 16:54:27,752 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states. [2020-09-24 16:54:27,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-09-24 16:54:27,772 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:54:27,774 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] [2020-09-24 16:54:27,775 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:54:27,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:54:27,784 INFO L82 PathProgramCache]: Analyzing trace with hash -29194710, now seen corresponding path program 1 times [2020-09-24 16:54:27,800 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:54:27,801 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1512732148] [2020-09-24 16:54:27,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:54:28,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:54:28,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:54:28,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:54:30,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:54:31,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:54:37,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:54:43,546 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:54:43,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-09-24 16:54:43,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 16:54:43,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15331 [2020-09-24 16:54:43,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:54:43,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 16:54:43,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-09-24 16:54:43,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-24 16:54:43,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 16:54:44,028 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 16:54:44,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:54:44,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:54:44,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:54:44,372 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:54:44,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 16:54:44,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:54:44,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 295 [2020-09-24 16:54:44,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:54:44,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:54:44,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:54:44,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-24 16:54:44,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 16:54:44,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 16:54:44,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:54:44,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:54:44,562 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:54:44,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:54:44,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:54:44,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 16:54:44,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:54:44,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:54:44,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:54:44,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 16:54:44,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:54:44,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 16:54:44,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:54:44,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:54:44,571 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:54:44,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:54:44,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:54:44,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 16:54:44,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:54:44,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:54:44,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:54:44,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 16:54:44,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:54:44,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 16:54:44,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:54:44,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:54:44,586 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:54:44,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:54:44,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:54:44,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 16:54:44,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:54:44,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:54:44,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:54:44,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 16:54:44,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:54:44,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 16:54:44,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:54:44,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:54:44,599 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:54:44,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:54:44,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:54:44,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 16:54:44,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:54:44,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:54:44,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:54:44,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 16:54:44,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:54:44,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-09-24 16:54:44,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:54:44,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:54:44,608 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:54:44,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:54:44,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:54:44,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 16:54:44,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:54:44,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:54:44,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 16:54:44,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:54:44,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:54:44,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-09-24 16:54:44,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:54:44,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:54:44,619 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:54:44,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:54:44,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:54:44,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 16:54:44,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:54:44,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:54:44,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 16:54:44,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:54:44,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:54:44,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:54:44,675 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1512732148] [2020-09-24 16:54:44,678 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:54:44,679 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 16:54:44,680 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136287615] [2020-09-24 16:54:44,688 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 16:54:44,689 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:54:44,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 16:54:44,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 16:54:44,720 INFO L87 Difference]: Start difference. First operand 320 states. Second operand 5 states. [2020-09-24 16:54:45,391 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 16:54:46,320 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 16:54:48,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:54:48,804 INFO L93 Difference]: Finished difference Result 782 states and 975 transitions. [2020-09-24 16:54:48,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 16:54:48,807 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 142 [2020-09-24 16:54:48,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:54:48,830 INFO L225 Difference]: With dead ends: 782 [2020-09-24 16:54:48,830 INFO L226 Difference]: Without dead ends: 569 [2020-09-24 16:54:48,837 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-24 16:54:48,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 569 states. [2020-09-24 16:54:49,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 569 to 478. [2020-09-24 16:54:49,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 478 states. [2020-09-24 16:54:49,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 543 transitions. [2020-09-24 16:54:49,015 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 543 transitions. Word has length 142 [2020-09-24 16:54:49,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:54:49,016 INFO L479 AbstractCegarLoop]: Abstraction has 478 states and 543 transitions. [2020-09-24 16:54:49,017 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 16:54:49,017 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 543 transitions. [2020-09-24 16:54:49,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-09-24 16:54:49,022 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:54:49,023 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] [2020-09-24 16:54:49,023 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 16:54:49,023 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:54:49,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:54:49,024 INFO L82 PathProgramCache]: Analyzing trace with hash 997847038, now seen corresponding path program 1 times [2020-09-24 16:54:49,024 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:54:49,024 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1735474341] [2020-09-24 16:54:49,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:54:49,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:54:49,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:54:49,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:54:50,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:54:50,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:54:50,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:54:58,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking...