/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.8 --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_product51.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 01:15:10,706 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 01:15:10,709 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 01:15:10,751 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 01:15:10,752 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 01:15:10,760 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 01:15:10,762 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 01:15:10,765 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 01:15:10,768 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 01:15:10,771 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 01:15:10,772 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 01:15:10,773 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 01:15:10,773 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 01:15:10,776 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 01:15:10,778 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 01:15:10,779 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 01:15:10,781 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 01:15:10,782 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 01:15:10,783 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 01:15:10,791 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 01:15:10,793 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 01:15:10,794 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 01:15:10,795 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 01:15:10,796 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 01:15:10,812 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 01:15:10,813 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 01:15:10,813 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 01:15:10,815 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 01:15:10,816 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 01:15:10,819 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 01:15:10,819 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 01:15:10,820 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 01:15:10,821 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 01:15:10,821 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 01:15:10,825 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 01:15:10,826 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 01:15:10,826 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 01:15:10,827 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 01:15:10,827 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 01:15:10,828 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 01:15:10,829 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 01:15:10,830 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 [2020-08-22 01:15:10,868 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 01:15:10,869 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 01:15:10,871 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 01:15:10,871 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 01:15:10,872 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 01:15:10,872 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 01:15:10,872 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 01:15:10,872 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 01:15:10,872 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 01:15:10,872 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 01:15:10,873 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 01:15:10,874 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 01:15:10,874 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 01:15:10,874 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 01:15:10,875 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 01:15:10,875 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 01:15:10,875 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 01:15:10,875 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 01:15:10,875 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 01:15:10,876 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 01:15:10,876 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 01:15:10,876 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 01:15:10,876 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 01:15:10,876 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 01:15:10,876 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 01:15:10,877 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 01:15:10,877 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 01:15:10,877 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 01:15:10,877 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 01:15:10,877 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; [2020-08-22 01:15:11,217 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 01:15:11,239 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 01:15:11,244 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 01:15:11,246 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 01:15:11,246 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 01:15:11,247 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product51.cil.c [2020-08-22 01:15:11,323 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4c7cd9d9e/ff389cd1cc4a449093f8d899acc52abe/FLAG2750d9426 [2020-08-22 01:15:11,920 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 01:15:11,920 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product51.cil.c [2020-08-22 01:15:11,940 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4c7cd9d9e/ff389cd1cc4a449093f8d899acc52abe/FLAG2750d9426 [2020-08-22 01:15:12,149 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4c7cd9d9e/ff389cd1cc4a449093f8d899acc52abe [2020-08-22 01:15:12,158 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 01:15:12,160 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 01:15:12,161 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 01:15:12,161 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 01:15:12,165 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 01:15:12,166 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 01:15:12" (1/1) ... [2020-08-22 01:15:12,169 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22589b7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:15:12, skipping insertion in model container [2020-08-22 01:15:12,169 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 01:15:12" (1/1) ... [2020-08-22 01:15:12,177 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 01:15:12,217 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 01:15:12,744 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 01:15:12,766 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 01:15:12,846 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 01:15:12,882 INFO L208 MainTranslator]: Completed translation [2020-08-22 01:15:12,883 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:15:12 WrapperNode [2020-08-22 01:15:12,883 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 01:15:12,884 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 01:15:12,884 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 01:15:12,884 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 01:15:12,895 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:15:12" (1/1) ... [2020-08-22 01:15:12,896 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:15:12" (1/1) ... [2020-08-22 01:15:12,918 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:15:12" (1/1) ... [2020-08-22 01:15:12,918 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:15:12" (1/1) ... [2020-08-22 01:15:12,977 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:15:12" (1/1) ... [2020-08-22 01:15:12,991 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:15:12" (1/1) ... [2020-08-22 01:15:12,996 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:15:12" (1/1) ... [2020-08-22 01:15:13,023 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 01:15:13,023 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 01:15:13,024 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 01:15:13,025 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 01:15:13,030 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:15:12" (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 [2020-08-22 01:15:13,124 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 01:15:13,124 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 01:15:13,125 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-22 01:15:13,125 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-22 01:15:13,125 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-22 01:15:13,125 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-22 01:15:13,126 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-22 01:15:13,126 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-22 01:15:13,126 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-22 01:15:13,127 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-22 01:15:13,127 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-22 01:15:13,127 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-22 01:15:13,127 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-22 01:15:13,128 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-22 01:15:13,128 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-22 01:15:13,129 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-22 01:15:13,129 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-22 01:15:13,129 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-22 01:15:13,129 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-22 01:15:13,129 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-22 01:15:13,130 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-22 01:15:13,130 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-22 01:15:13,130 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-22 01:15:13,130 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-22 01:15:13,130 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-22 01:15:13,132 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-22 01:15:13,132 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-22 01:15:13,132 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-22 01:15:13,132 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-22 01:15:13,132 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 01:15:13,133 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-22 01:15:13,133 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-22 01:15:13,133 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-22 01:15:13,133 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-22 01:15:13,133 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-22 01:15:13,133 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-22 01:15:13,134 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-22 01:15:13,134 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-22 01:15:13,134 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-22 01:15:13,134 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-22 01:15:13,134 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-22 01:15:13,135 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 01:15:13,135 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 01:15:13,135 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-22 01:15:13,135 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-22 01:15:13,135 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-22 01:15:13,135 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-22 01:15:13,135 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-22 01:15:13,136 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-22 01:15:13,136 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-22 01:15:13,136 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-22 01:15:13,136 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-22 01:15:13,136 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 01:15:13,137 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-22 01:15:13,137 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-22 01:15:13,137 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-22 01:15:13,137 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-22 01:15:13,138 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-22 01:15:13,138 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-22 01:15:13,138 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-22 01:15:13,138 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-22 01:15:13,138 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-22 01:15:13,138 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-22 01:15:13,138 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-22 01:15:13,139 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-22 01:15:13,139 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-22 01:15:13,139 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-22 01:15:13,139 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-22 01:15:13,139 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-22 01:15:13,139 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-22 01:15:13,140 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-22 01:15:13,141 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-22 01:15:13,141 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-22 01:15:13,142 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-22 01:15:13,142 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-22 01:15:13,143 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 01:15:13,143 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-22 01:15:13,143 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-22 01:15:13,143 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 01:15:13,143 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 01:15:13,143 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-22 01:15:13,144 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 01:15:13,145 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 01:15:13,145 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 01:15:13,145 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 01:15:13,145 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-22 01:15:13,145 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 01:15:13,145 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-22 01:15:13,145 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-22 01:15:13,146 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 01:15:13,146 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-22 01:15:13,146 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-22 01:15:13,146 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-22 01:15:13,146 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 01:15:13,146 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-22 01:15:13,146 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 01:15:14,250 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 01:15:14,251 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-22 01:15:14,256 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 01:15:14 BoogieIcfgContainer [2020-08-22 01:15:14,257 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 01:15:14,258 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 01:15:14,258 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 01:15:14,261 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 01:15:14,262 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 01:15:12" (1/3) ... [2020-08-22 01:15:14,262 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71c61866 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 01:15:14, skipping insertion in model container [2020-08-22 01:15:14,263 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:15:12" (2/3) ... [2020-08-22 01:15:14,263 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71c61866 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 01:15:14, skipping insertion in model container [2020-08-22 01:15:14,263 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 01:15:14" (3/3) ... [2020-08-22 01:15:14,265 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product51.cil.c [2020-08-22 01:15:14,276 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 01:15:14,285 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 01:15:14,299 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 01:15:14,325 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 01:15:14,325 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 01:15:14,326 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 01:15:14,326 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 01:15:14,326 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 01:15:14,326 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 01:15:14,326 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 01:15:14,326 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 01:15:14,348 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states. [2020-08-22 01:15:14,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-22 01:15:14,359 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:15:14,361 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 01:15:14,361 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:15:14,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:15:14,368 INFO L82 PathProgramCache]: Analyzing trace with hash 640895003, now seen corresponding path program 1 times [2020-08-22 01:15:14,377 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:15:14,377 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [477848502] [2020-08-22 01:15:14,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:15:14,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:15:15,048 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 01:15:15,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:15:15,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:15:15,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:15:15,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:15:15,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:15:15,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:15:15,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:15:15,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:15:15,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 01:15:15,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:15:15,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 01:15:15,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:15:15,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 01:15:15,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:15:15,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-22 01:15:15,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:15:15,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 01:15:15,203 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [477848502] [2020-08-22 01:15:15,205 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:15:15,206 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 01:15:15,207 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079369777] [2020-08-22 01:15:15,212 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 01:15:15,213 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:15:15,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 01:15:15,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 01:15:15,231 INFO L87 Difference]: Start difference. First operand 186 states. Second operand 3 states. [2020-08-22 01:15:16,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:15:16,559 INFO L93 Difference]: Finished difference Result 323 states and 421 transitions. [2020-08-22 01:15:16,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 01:15:16,561 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-08-22 01:15:16,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:15:16,577 INFO L225 Difference]: With dead ends: 323 [2020-08-22 01:15:16,577 INFO L226 Difference]: Without dead ends: 174 [2020-08-22 01:15:16,582 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 [2020-08-22 01:15:16,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2020-08-22 01:15:16,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 140. [2020-08-22 01:15:16,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-08-22 01:15:16,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 165 transitions. [2020-08-22 01:15:16,680 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 165 transitions. Word has length 52 [2020-08-22 01:15:16,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:15:16,681 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 165 transitions. [2020-08-22 01:15:16,681 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 01:15:16,681 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 165 transitions. [2020-08-22 01:15:16,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-22 01:15:16,685 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:15:16,685 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 01:15:16,685 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 01:15:16,686 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:15:16,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:15:16,686 INFO L82 PathProgramCache]: Analyzing trace with hash -61253498, now seen corresponding path program 1 times [2020-08-22 01:15:16,686 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:15:16,687 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1213846368] [2020-08-22 01:15:16,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:15:16,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:15:17,117 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 01:15:17,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:15:17,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:15:17,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:15:17,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:15:17,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:15:17,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:15:17,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:15:17,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:15:17,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 01:15:17,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:15:17,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 01:15:17,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:15:17,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-22 01:15:17,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:15:17,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-22 01:15:17,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:15:17,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 01:15:17,161 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1213846368] [2020-08-22 01:15:17,161 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:15:17,161 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 01:15:17,162 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333878484] [2020-08-22 01:15:17,164 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 01:15:17,164 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:15:17,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 01:15:17,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 01:15:17,165 INFO L87 Difference]: Start difference. First operand 140 states and 165 transitions. Second operand 4 states. [2020-08-22 01:15:17,588 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 01:15:18,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:15:18,640 INFO L93 Difference]: Finished difference Result 250 states and 304 transitions. [2020-08-22 01:15:18,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 01:15:18,641 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-08-22 01:15:18,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:15:18,645 INFO L225 Difference]: With dead ends: 250 [2020-08-22 01:15:18,645 INFO L226 Difference]: Without dead ends: 158 [2020-08-22 01:15:18,647 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-22 01:15:18,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-08-22 01:15:18,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 131. [2020-08-22 01:15:18,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-08-22 01:15:18,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 153 transitions. [2020-08-22 01:15:18,687 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 153 transitions. Word has length 53 [2020-08-22 01:15:18,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:15:18,687 INFO L479 AbstractCegarLoop]: Abstraction has 131 states and 153 transitions. [2020-08-22 01:15:18,687 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 01:15:18,687 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 153 transitions. [2020-08-22 01:15:18,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-22 01:15:18,690 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:15:18,690 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] [2020-08-22 01:15:18,690 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 01:15:18,691 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:15:18,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:15:18,691 INFO L82 PathProgramCache]: Analyzing trace with hash 2048791527, now seen corresponding path program 1 times [2020-08-22 01:15:18,691 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:15:18,692 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1430408623] [2020-08-22 01:15:18,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:15:18,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:15:19,092 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 01:15:19,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:15:19,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:15:19,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:15:19,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:15:19,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:15:19,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:15:19,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:15:19,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:15:19,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 01:15:19,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:15:19,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 01:15:19,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:15:19,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 01:15:19,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:15:19,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-22 01:15:19,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:15:19,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 01:15:19,191 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1430408623] [2020-08-22 01:15:19,191 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:15:19,191 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 01:15:19,192 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692840036] [2020-08-22 01:15:19,192 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 01:15:19,193 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:15:19,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 01:15:19,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-22 01:15:19,193 INFO L87 Difference]: Start difference. First operand 131 states and 153 transitions. Second operand 8 states. [2020-08-22 01:15:19,565 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 01:15:19,945 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 01:15:20,239 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 01:15:20,482 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 01:15:21,258 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 01:15:23,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:15:23,224 INFO L93 Difference]: Finished difference Result 451 states and 558 transitions. [2020-08-22 01:15:23,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 01:15:23,225 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2020-08-22 01:15:23,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:15:23,232 INFO L225 Difference]: With dead ends: 451 [2020-08-22 01:15:23,232 INFO L226 Difference]: Without dead ends: 344 [2020-08-22 01:15:23,237 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-08-22 01:15:23,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2020-08-22 01:15:23,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 286. [2020-08-22 01:15:23,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 286 states. [2020-08-22 01:15:23,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 345 transitions. [2020-08-22 01:15:23,319 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 345 transitions. Word has length 57 [2020-08-22 01:15:23,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:15:23,320 INFO L479 AbstractCegarLoop]: Abstraction has 286 states and 345 transitions. [2020-08-22 01:15:23,320 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 01:15:23,320 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 345 transitions. [2020-08-22 01:15:23,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-08-22 01:15:23,323 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:15:23,323 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] [2020-08-22 01:15:23,324 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 01:15:23,324 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:15:23,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:15:23,324 INFO L82 PathProgramCache]: Analyzing trace with hash 1441609457, now seen corresponding path program 1 times [2020-08-22 01:15:23,325 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:15:23,325 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1597710827] [2020-08-22 01:15:23,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:15:23,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:15:23,640 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 01:15:23,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:15:23,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:15:23,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:15:23,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:15:23,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:15:23,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:15:23,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:15:23,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:15:23,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 01:15:23,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:15:23,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 01:15:23,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:15:23,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 01:15:23,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:15:23,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-22 01:15:23,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:15:23,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-22 01:15:23,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:15:23,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 01:15:23,776 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1597710827] [2020-08-22 01:15:23,777 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:15:23,777 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 01:15:23,777 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556550232] [2020-08-22 01:15:23,778 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 01:15:23,778 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:15:23,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 01:15:23,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-22 01:15:23,779 INFO L87 Difference]: Start difference. First operand 286 states and 345 transitions. Second operand 8 states. [2020-08-22 01:15:24,121 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 01:15:25,544 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 01:15:25,910 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 01:15:26,172 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 01:15:26,390 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 01:15:27,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:15:27,074 INFO L93 Difference]: Finished difference Result 878 states and 1149 transitions. [2020-08-22 01:15:27,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-22 01:15:27,076 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 63 [2020-08-22 01:15:27,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:15:27,088 INFO L225 Difference]: With dead ends: 878 [2020-08-22 01:15:27,088 INFO L226 Difference]: Without dead ends: 616 [2020-08-22 01:15:27,094 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-08-22 01:15:27,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 616 states. [2020-08-22 01:15:27,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 616 to 549. [2020-08-22 01:15:27,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 549 states. [2020-08-22 01:15:27,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 675 transitions. [2020-08-22 01:15:27,218 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 675 transitions. Word has length 63 [2020-08-22 01:15:27,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:15:27,218 INFO L479 AbstractCegarLoop]: Abstraction has 549 states and 675 transitions. [2020-08-22 01:15:27,219 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 01:15:27,219 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 675 transitions. [2020-08-22 01:15:27,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-08-22 01:15:27,227 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:15:27,227 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] [2020-08-22 01:15:27,227 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 01:15:27,228 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:15:27,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:15:27,228 INFO L82 PathProgramCache]: Analyzing trace with hash -1167704009, now seen corresponding path program 1 times [2020-08-22 01:15:27,228 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:15:27,229 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1779144536] [2020-08-22 01:15:27,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:15:27,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:15:27,488 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 01:15:27,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:15:27,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:15:27,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:15:27,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:15:27,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:15:27,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:15:27,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:15:27,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:15:27,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 01:15:27,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:15:27,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 01:15:27,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:15:27,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 01:15:27,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:15:27,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-22 01:15:27,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:15:27,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-22 01:15:27,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:15:27,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-22 01:15:27,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:15:27,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 01:15:27,599 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1779144536] [2020-08-22 01:15:27,599 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:15:27,599 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 01:15:27,599 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504379254] [2020-08-22 01:15:27,600 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 01:15:27,600 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:15:27,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 01:15:27,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 01:15:27,601 INFO L87 Difference]: Start difference. First operand 549 states and 675 transitions. Second operand 6 states. [2020-08-22 01:15:27,993 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 01:15:29,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:15:29,427 INFO L93 Difference]: Finished difference Result 1300 states and 1694 transitions. [2020-08-22 01:15:29,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-22 01:15:29,428 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 67 [2020-08-22 01:15:29,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:15:29,435 INFO L225 Difference]: With dead ends: 1300 [2020-08-22 01:15:29,435 INFO L226 Difference]: Without dead ends: 775 [2020-08-22 01:15:29,437 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-08-22 01:15:29,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 775 states. [2020-08-22 01:15:29,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 775 to 705. [2020-08-22 01:15:29,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 705 states. [2020-08-22 01:15:29,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 705 states to 705 states and 860 transitions. [2020-08-22 01:15:29,589 INFO L78 Accepts]: Start accepts. Automaton has 705 states and 860 transitions. Word has length 67 [2020-08-22 01:15:29,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:15:29,589 INFO L479 AbstractCegarLoop]: Abstraction has 705 states and 860 transitions. [2020-08-22 01:15:29,590 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 01:15:29,590 INFO L276 IsEmpty]: Start isEmpty. Operand 705 states and 860 transitions. [2020-08-22 01:15:29,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-08-22 01:15:29,592 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:15:29,592 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] [2020-08-22 01:15:29,592 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 01:15:29,592 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:15:29,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:15:29,593 INFO L82 PathProgramCache]: Analyzing trace with hash -1951258889, now seen corresponding path program 1 times [2020-08-22 01:15:29,593 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:15:29,593 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [485157381] [2020-08-22 01:15:29,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:15:29,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 01:15:29,645 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 01:15:29,645 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 01:15:29,649 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 01:15:29,672 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 01:15:29 BoogieIcfgContainer [2020-08-22 01:15:29,672 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 01:15:29,674 INFO L168 Benchmark]: Toolchain (without parser) took 17514.78 ms. Allocated memory was 140.0 MB in the beginning and 533.7 MB in the end (delta: 393.7 MB). Free memory was 102.4 MB in the beginning and 416.2 MB in the end (delta: -313.8 MB). Peak memory consumption was 79.9 MB. Max. memory is 7.1 GB. [2020-08-22 01:15:29,675 INFO L168 Benchmark]: CDTParser took 0.74 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. [2020-08-22 01:15:29,676 INFO L168 Benchmark]: CACSL2BoogieTranslator took 722.26 ms. Allocated memory was 140.0 MB in the beginning and 201.3 MB in the end (delta: 61.3 MB). Free memory was 102.2 MB in the beginning and 168.5 MB in the end (delta: -66.3 MB). Peak memory consumption was 25.4 MB. Max. memory is 7.1 GB. [2020-08-22 01:15:29,677 INFO L168 Benchmark]: Boogie Preprocessor took 139.33 ms. Allocated memory is still 201.3 MB. Free memory was 168.5 MB in the beginning and 164.4 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. [2020-08-22 01:15:29,678 INFO L168 Benchmark]: RCFGBuilder took 1233.36 ms. Allocated memory was 201.3 MB in the beginning and 235.4 MB in the end (delta: 34.1 MB). Free memory was 164.4 MB in the beginning and 193.1 MB in the end (delta: -28.7 MB). Peak memory consumption was 82.0 MB. Max. memory is 7.1 GB. [2020-08-22 01:15:29,679 INFO L168 Benchmark]: TraceAbstraction took 15414.32 ms. Allocated memory was 235.4 MB in the beginning and 533.7 MB in the end (delta: 298.3 MB). Free memory was 193.1 MB in the beginning and 416.2 MB in the end (delta: -223.1 MB). Peak memory consumption was 75.2 MB. Max. memory is 7.1 GB. [2020-08-22 01:15:29,682 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.74 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 722.26 ms. Allocated memory was 140.0 MB in the beginning and 201.3 MB in the end (delta: 61.3 MB). Free memory was 102.2 MB in the beginning and 168.5 MB in the end (delta: -66.3 MB). Peak memory consumption was 25.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 139.33 ms. Allocated memory is still 201.3 MB. Free memory was 168.5 MB in the beginning and 164.4 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1233.36 ms. Allocated memory was 201.3 MB in the beginning and 235.4 MB in the end (delta: 34.1 MB). Free memory was 164.4 MB in the beginning and 193.1 MB in the end (delta: -28.7 MB). Peak memory consumption was 82.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 15414.32 ms. Allocated memory was 235.4 MB in the beginning and 533.7 MB in the end (delta: 298.3 MB). Free memory was 193.1 MB in the beginning and 416.2 MB in the end (delta: -223.1 MB). Peak memory consumption was 75.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 977]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L48] int waterLevel = 1; [L49] int methaneLevelCritical = 0; [L225] int pumpRunning = 0; [L226] int systemActive = 1; [L473] int cleanupTimeShifts = 4; [L776] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L549] int retValue_acc ; [L550] int tmp ; [L554] FCALL select_helpers() [L555] FCALL select_features() [L556] CALL, EXPR valid_product() [L598] int retValue_acc ; [L601] retValue_acc = 1 [L602] return (retValue_acc); [L556] RET, EXPR valid_product() [L556] tmp = valid_product() [L558] COND TRUE \read(tmp) [L560] FCALL setup() [L561] CALL runTest() [L540] CALL test() [L155] int splverifierCounter ; [L156] int tmp ; [L157] int tmp___0 ; [L158] int tmp___1 ; [L159] int tmp___2 ; [L162] splverifierCounter = 0 [L164] COND TRUE 1 [L166] COND TRUE splverifierCounter < 4 [L172] tmp = __VERIFIER_nondet_int() [L174] COND TRUE \read(tmp) [L176] CALL waterRise() [L66] COND TRUE waterLevel < 2 [L67] waterLevel = waterLevel + 1 [L176] RET waterRise() [L182] tmp___0 = __VERIFIER_nondet_int() [L184] COND FALSE !(\read(tmp___0)) [L192] tmp___2 = __VERIFIER_nondet_int() [L194] COND FALSE !(\read(tmp___2)) [L198] tmp___1 = __VERIFIER_nondet_int() [L200] COND TRUE \read(tmp___1) [L202] CALL stopSystem() [L426] COND FALSE !(\read(pumpRunning)) [L433] systemActive = 0 [L202] RET stopSystem() [L209] CALL timeShift() [L233] COND FALSE !(\read(pumpRunning)) [L240] COND FALSE !(\read(systemActive)) [L248] CALL __utac_acc__Specification3_spec__1() [L440] int tmp ; [L441] int tmp___0 ; [L442] int tmp___1 ; [L446] CALL, EXPR isMethaneLevelCritical() [L87] int retValue_acc ; [L90] retValue_acc = methaneLevelCritical [L91] return (retValue_acc); [L446] RET, EXPR isMethaneLevelCritical() [L446] tmp = isMethaneLevelCritical() [L448] COND FALSE !(\read(tmp)) [L452] CALL, EXPR getWaterLevel() [L119] int retValue_acc ; [L122] retValue_acc = waterLevel [L123] return (retValue_acc); [L452] RET, EXPR getWaterLevel() [L452] tmp___0 = getWaterLevel() [L454] COND TRUE tmp___0 == 2 [L456] CALL, EXPR isPumpRunning() [L340] int retValue_acc ; [L343] retValue_acc = pumpRunning [L344] return (retValue_acc); [L456] RET, EXPR isPumpRunning() [L456] tmp___1 = isPumpRunning() [L458] COND FALSE !(\read(tmp___1)) [L462] CALL __automaton_fail() [L977] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 41 procedures, 244 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 15.3s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 12.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 639 SDtfs, 1471 SDslu, 410 SDs, 0 SdLazy, 2273 SolverSat, 928 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 7.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 135 GetRequests, 98 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 4.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=705occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 5 MinimizatonAttempts, 256 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 359 NumberOfCodeBlocks, 359 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 287 ConstructedInterpolants, 0 QuantifiedInterpolants, 82182 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...