/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product30.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 04:29:34,641 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 04:29:34,644 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 04:29:34,680 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 04:29:34,682 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 04:29:34,689 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 04:29:34,691 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 04:29:34,695 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 04:29:34,698 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 04:29:34,701 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 04:29:34,702 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 04:29:34,703 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 04:29:34,703 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 04:29:34,706 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 04:29:34,709 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 04:29:34,710 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 04:29:34,712 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 04:29:34,713 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 04:29:34,714 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 04:29:34,724 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 04:29:34,726 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 04:29:34,727 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 04:29:34,728 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 04:29:34,728 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 04:29:34,740 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 04:29:34,740 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 04:29:34,740 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 04:29:34,742 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 04:29:34,743 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 04:29:34,746 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 04:29:34,746 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 04:29:34,747 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 04:29:34,747 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 04:29:34,748 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 04:29:34,749 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 04:29:34,749 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 04:29:34,749 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 04:29:34,750 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 04:29:34,750 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 04:29:34,751 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 04:29:34,752 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 04:29:34,753 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 04:29:34,793 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 04:29:34,793 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 04:29:34,795 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 04:29:34,796 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 04:29:34,796 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 04:29:34,796 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 04:29:34,796 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 04:29:34,796 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 04:29:34,797 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 04:29:34,797 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 04:29:34,798 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 04:29:34,798 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 04:29:34,798 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 04:29:34,799 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 04:29:34,799 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 04:29:34,799 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 04:29:34,799 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 04:29:34,800 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 04:29:34,800 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 04:29:34,800 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 04:29:34,800 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 04:29:34,800 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 04:29:34,801 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 04:29:34,801 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 04:29:34,801 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 04:29:34,801 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 04:29:34,801 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 04:29:34,802 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 04:29:34,802 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 04:29:34,802 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=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; [2020-08-22 04:29:35,081 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 04:29:35,094 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 04:29:35,098 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 04:29:35,100 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 04:29:35,100 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 04:29:35,101 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product30.cil.c [2020-08-22 04:29:35,178 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f951d1f9b/45c7958afe214347a1be7eaa8a1b1813/FLAGec796078e [2020-08-22 04:29:35,724 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 04:29:35,725 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product30.cil.c [2020-08-22 04:29:35,755 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f951d1f9b/45c7958afe214347a1be7eaa8a1b1813/FLAGec796078e [2020-08-22 04:29:35,999 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f951d1f9b/45c7958afe214347a1be7eaa8a1b1813 [2020-08-22 04:29:36,008 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 04:29:36,009 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 04:29:36,010 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 04:29:36,010 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 04:29:36,013 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 04:29:36,014 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:29:36" (1/1) ... [2020-08-22 04:29:36,016 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20d621dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:29:36, skipping insertion in model container [2020-08-22 04:29:36,017 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:29:36" (1/1) ... [2020-08-22 04:29:36,023 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 04:29:36,071 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 04:29:36,477 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 04:29:36,489 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 04:29:36,620 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 04:29:36,657 INFO L208 MainTranslator]: Completed translation [2020-08-22 04:29:36,657 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:29:36 WrapperNode [2020-08-22 04:29:36,657 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 04:29:36,658 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 04:29:36,658 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 04:29:36,659 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 04:29:36,672 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:29:36" (1/1) ... [2020-08-22 04:29:36,672 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:29:36" (1/1) ... [2020-08-22 04:29:36,692 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:29:36" (1/1) ... [2020-08-22 04:29:36,693 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:29:36" (1/1) ... [2020-08-22 04:29:36,728 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:29:36" (1/1) ... [2020-08-22 04:29:36,739 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:29:36" (1/1) ... [2020-08-22 04:29:36,744 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:29:36" (1/1) ... [2020-08-22 04:29:36,753 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 04:29:36,753 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 04:29:36,753 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 04:29:36,754 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 04:29:36,755 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:29:36" (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 04:29:36,834 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 04:29:36,834 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 04:29:36,835 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-22 04:29:36,835 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-22 04:29:36,835 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-22 04:29:36,836 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-22 04:29:36,836 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-22 04:29:36,836 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-22 04:29:36,836 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-22 04:29:36,837 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-22 04:29:36,837 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-22 04:29:36,837 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-22 04:29:36,838 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-22 04:29:36,838 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-22 04:29:36,838 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 04:29:36,839 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-22 04:29:36,839 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-22 04:29:36,839 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-22 04:29:36,839 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-22 04:29:36,839 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-22 04:29:36,840 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-22 04:29:36,840 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-22 04:29:36,840 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-22 04:29:36,840 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-22 04:29:36,840 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-08-22 04:29:36,841 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-22 04:29:36,842 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2020-08-22 04:29:36,842 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-22 04:29:36,842 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-22 04:29:36,842 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-22 04:29:36,842 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-22 04:29:36,843 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-22 04:29:36,843 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-22 04:29:36,843 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-22 04:29:36,843 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-22 04:29:36,843 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-22 04:29:36,843 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-22 04:29:36,843 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-22 04:29:36,844 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-22 04:29:36,844 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-22 04:29:36,844 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 04:29:36,844 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 04:29:36,844 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-22 04:29:36,844 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-22 04:29:36,845 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-22 04:29:36,845 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-22 04:29:36,845 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-22 04:29:36,846 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-22 04:29:36,846 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-22 04:29:36,846 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-22 04:29:36,847 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 04:29:36,847 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-22 04:29:36,847 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-22 04:29:36,847 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-22 04:29:36,848 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-22 04:29:36,848 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-22 04:29:36,848 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-22 04:29:36,848 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-22 04:29:36,848 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-22 04:29:36,849 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-22 04:29:36,849 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-22 04:29:36,849 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 04:29:36,849 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-22 04:29:36,849 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 04:29:36,849 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 04:29:36,849 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-22 04:29:36,850 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 04:29:36,850 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 04:29:36,850 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 04:29:36,850 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 04:29:36,850 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-22 04:29:36,851 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 04:29:36,852 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-22 04:29:36,852 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-22 04:29:36,852 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 04:29:36,853 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-22 04:29:36,854 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-22 04:29:36,854 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-22 04:29:36,854 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-22 04:29:36,854 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-22 04:29:36,854 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-22 04:29:36,854 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-22 04:29:36,855 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-22 04:29:36,856 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-22 04:29:36,856 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-22 04:29:36,856 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-22 04:29:36,856 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-08-22 04:29:36,856 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-22 04:29:36,857 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2020-08-22 04:29:36,857 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-22 04:29:36,857 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-22 04:29:36,857 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 04:29:36,857 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-22 04:29:36,857 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 04:29:37,945 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 04:29:37,945 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-22 04:29:37,950 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:29:37 BoogieIcfgContainer [2020-08-22 04:29:37,950 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 04:29:37,952 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 04:29:37,952 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 04:29:37,955 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 04:29:37,955 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 04:29:36" (1/3) ... [2020-08-22 04:29:37,956 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ee41353 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:29:37, skipping insertion in model container [2020-08-22 04:29:37,956 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:29:36" (2/3) ... [2020-08-22 04:29:37,957 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ee41353 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:29:37, skipping insertion in model container [2020-08-22 04:29:37,957 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:29:37" (3/3) ... [2020-08-22 04:29:37,959 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product30.cil.c [2020-08-22 04:29:37,969 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 04:29:37,977 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 04:29:37,991 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 04:29:38,016 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 04:29:38,016 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 04:29:38,016 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 04:29:38,016 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 04:29:38,017 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 04:29:38,017 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 04:29:38,017 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 04:29:38,017 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 04:29:38,039 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states. [2020-08-22 04:29:38,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-22 04:29:38,051 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:29:38,052 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 04:29:38,052 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:29:38,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:29:38,059 INFO L82 PathProgramCache]: Analyzing trace with hash -48518306, now seen corresponding path program 1 times [2020-08-22 04:29:38,066 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:29:38,066 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [930023832] [2020-08-22 04:29:38,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:29:38,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:38,737 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 04:29:38,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:29:38,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:38,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:29:38,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:38,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:29:38,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:38,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:29:38,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:38,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:29:38,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:38,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 04:29:38,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:38,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 04:29:38,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:38,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-22 04:29:38,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:38,821 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 04:29:38,822 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [930023832] [2020-08-22 04:29:38,824 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:29:38,824 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 04:29:38,825 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259668397] [2020-08-22 04:29:38,830 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 04:29:38,831 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:29:38,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 04:29:38,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 04:29:38,850 INFO L87 Difference]: Start difference. First operand 180 states. Second operand 3 states. [2020-08-22 04:29:40,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:29:40,009 INFO L93 Difference]: Finished difference Result 300 states and 394 transitions. [2020-08-22 04:29:40,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 04:29:40,012 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-08-22 04:29:40,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:29:40,027 INFO L225 Difference]: With dead ends: 300 [2020-08-22 04:29:40,027 INFO L226 Difference]: Without dead ends: 162 [2020-08-22 04:29:40,032 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 04:29:40,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-08-22 04:29:40,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 129. [2020-08-22 04:29:40,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-08-22 04:29:40,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 152 transitions. [2020-08-22 04:29:40,137 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 152 transitions. Word has length 52 [2020-08-22 04:29:40,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:29:40,138 INFO L479 AbstractCegarLoop]: Abstraction has 129 states and 152 transitions. [2020-08-22 04:29:40,138 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 04:29:40,138 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 152 transitions. [2020-08-22 04:29:40,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-22 04:29:40,149 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:29:40,150 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 04:29:40,150 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 04:29:40,150 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:29:40,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:29:40,151 INFO L82 PathProgramCache]: Analyzing trace with hash 224052050, now seen corresponding path program 1 times [2020-08-22 04:29:40,151 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:29:40,151 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1179984040] [2020-08-22 04:29:40,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:29:40,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:40,503 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 04:29:40,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:29:40,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:40,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:29:40,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:40,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:29:40,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:40,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:29:40,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:40,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:29:40,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:40,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 04:29:40,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:40,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-22 04:29:40,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:40,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-22 04:29:40,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:40,545 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 04:29:40,546 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1179984040] [2020-08-22 04:29:40,546 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:29:40,546 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 04:29:40,547 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78835619] [2020-08-22 04:29:40,548 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 04:29:40,549 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:29:40,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 04:29:40,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 04:29:40,549 INFO L87 Difference]: Start difference. First operand 129 states and 152 transitions. Second operand 4 states. [2020-08-22 04:29:40,953 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:29:41,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:29:41,806 INFO L93 Difference]: Finished difference Result 229 states and 281 transitions. [2020-08-22 04:29:41,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 04:29:41,807 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-08-22 04:29:41,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:29:41,811 INFO L225 Difference]: With dead ends: 229 [2020-08-22 04:29:41,811 INFO L226 Difference]: Without dead ends: 146 [2020-08-22 04:29:41,813 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-22 04:29:41,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-08-22 04:29:41,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 120. [2020-08-22 04:29:41,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-08-22 04:29:41,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 140 transitions. [2020-08-22 04:29:41,847 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 140 transitions. Word has length 53 [2020-08-22 04:29:41,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:29:41,848 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 140 transitions. [2020-08-22 04:29:41,848 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 04:29:41,848 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 140 transitions. [2020-08-22 04:29:41,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-08-22 04:29:41,850 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:29:41,850 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 04:29:41,851 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 04:29:41,851 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:29:41,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:29:41,851 INFO L82 PathProgramCache]: Analyzing trace with hash -1519728538, now seen corresponding path program 1 times [2020-08-22 04:29:41,852 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:29:41,852 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [341216161] [2020-08-22 04:29:41,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:29:41,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:42,159 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 04:29:42,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:29:42,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:42,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:29:42,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:42,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:29:42,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:42,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:29:42,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:42,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:29:42,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:42,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 04:29:42,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:42,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-22 04:29:42,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:42,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-22 04:29:42,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:42,237 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 04:29:42,237 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [341216161] [2020-08-22 04:29:42,238 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:29:42,238 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 04:29:42,238 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339512738] [2020-08-22 04:29:42,239 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 04:29:42,239 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:29:42,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 04:29:42,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-22 04:29:42,240 INFO L87 Difference]: Start difference. First operand 120 states and 140 transitions. Second operand 8 states. [2020-08-22 04:29:42,610 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 04:29:42,948 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 04:29:43,223 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 04:29:43,464 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 04:29:44,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:29:44,715 INFO L93 Difference]: Finished difference Result 242 states and 299 transitions. [2020-08-22 04:29:44,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-22 04:29:44,716 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 58 [2020-08-22 04:29:44,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:29:44,719 INFO L225 Difference]: With dead ends: 242 [2020-08-22 04:29:44,719 INFO L226 Difference]: Without dead ends: 146 [2020-08-22 04:29:44,740 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-22 04:29:44,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-08-22 04:29:44,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 120. [2020-08-22 04:29:44,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-08-22 04:29:44,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 139 transitions. [2020-08-22 04:29:44,779 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 139 transitions. Word has length 58 [2020-08-22 04:29:44,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:29:44,779 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 139 transitions. [2020-08-22 04:29:44,780 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 04:29:44,780 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 139 transitions. [2020-08-22 04:29:44,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-08-22 04:29:44,782 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:29:44,782 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 04:29:44,783 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 04:29:44,783 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:29:44,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:29:44,783 INFO L82 PathProgramCache]: Analyzing trace with hash -531263457, now seen corresponding path program 1 times [2020-08-22 04:29:44,783 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:29:44,784 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1800528844] [2020-08-22 04:29:44,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:29:44,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:45,080 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 04:29:45,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:29:45,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:45,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:29:45,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:45,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:29:45,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:45,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:29:45,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:45,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:29:45,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:45,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 04:29:45,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:45,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:29:45,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:45,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:29:45,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:45,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-22 04:29:45,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:45,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-08-22 04:29:45,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:45,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-08-22 04:29:45,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:45,218 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 04:29:45,218 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1800528844] [2020-08-22 04:29:45,219 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:29:45,219 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 04:29:45,219 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797659653] [2020-08-22 04:29:45,220 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 04:29:45,220 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:29:45,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 04:29:45,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-22 04:29:45,221 INFO L87 Difference]: Start difference. First operand 120 states and 139 transitions. Second operand 8 states. [2020-08-22 04:29:45,578 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 04:29:47,265 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 04:29:47,561 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 04:29:47,801 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 04:29:48,176 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 04:29:48,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:29:48,601 INFO L93 Difference]: Finished difference Result 363 states and 474 transitions. [2020-08-22 04:29:48,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-22 04:29:48,608 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 71 [2020-08-22 04:29:48,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:29:48,614 INFO L225 Difference]: With dead ends: 363 [2020-08-22 04:29:48,614 INFO L226 Difference]: Without dead ends: 267 [2020-08-22 04:29:48,615 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-08-22 04:29:48,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2020-08-22 04:29:48,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 216. [2020-08-22 04:29:48,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-08-22 04:29:48,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 258 transitions. [2020-08-22 04:29:48,682 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 258 transitions. Word has length 71 [2020-08-22 04:29:48,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:29:48,683 INFO L479 AbstractCegarLoop]: Abstraction has 216 states and 258 transitions. [2020-08-22 04:29:48,683 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 04:29:48,683 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 258 transitions. [2020-08-22 04:29:48,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-08-22 04:29:48,685 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:29:48,685 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, 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 04:29:48,686 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 04:29:48,686 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:29:48,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:29:48,686 INFO L82 PathProgramCache]: Analyzing trace with hash 1398757657, now seen corresponding path program 1 times [2020-08-22 04:29:48,687 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:29:48,687 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [826077318] [2020-08-22 04:29:48,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:29:48,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:48,932 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 04:29:48,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:29:48,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:48,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:29:48,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:48,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:29:48,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:48,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:29:48,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:48,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:29:48,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:48,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-22 04:29:48,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:48,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 04:29:48,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:48,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:29:48,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:48,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:29:48,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:48,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-22 04:29:48,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:48,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 04:29:48,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:49,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-08-22 04:29:49,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:49,010 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 04:29:49,011 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [826077318] [2020-08-22 04:29:49,011 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:29:49,011 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 04:29:49,012 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967565297] [2020-08-22 04:29:49,012 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 04:29:49,012 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:29:49,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 04:29:49,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 04:29:49,013 INFO L87 Difference]: Start difference. First operand 216 states and 258 transitions. Second operand 6 states. [2020-08-22 04:29:49,332 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 04:29:49,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:29:49,941 INFO L93 Difference]: Finished difference Result 348 states and 431 transitions. [2020-08-22 04:29:49,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-22 04:29:49,942 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 75 [2020-08-22 04:29:49,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:29:49,944 INFO L225 Difference]: With dead ends: 348 [2020-08-22 04:29:49,945 INFO L226 Difference]: Without dead ends: 156 [2020-08-22 04:29:49,946 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2020-08-22 04:29:49,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2020-08-22 04:29:49,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 143. [2020-08-22 04:29:49,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-08-22 04:29:49,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 158 transitions. [2020-08-22 04:29:49,973 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 158 transitions. Word has length 75 [2020-08-22 04:29:49,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:29:49,974 INFO L479 AbstractCegarLoop]: Abstraction has 143 states and 158 transitions. [2020-08-22 04:29:49,974 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 04:29:49,974 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 158 transitions. [2020-08-22 04:29:49,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-08-22 04:29:49,975 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:29:49,976 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 04:29:49,976 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 04:29:49,976 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:29:49,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:29:49,976 INFO L82 PathProgramCache]: Analyzing trace with hash -1135016507, now seen corresponding path program 1 times [2020-08-22 04:29:49,977 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:29:49,977 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [826869861] [2020-08-22 04:29:49,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:29:50,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 04:29:50,034 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 04:29:50,034 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 04:29:50,039 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 04:29:50,061 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 04:29:50 BoogieIcfgContainer [2020-08-22 04:29:50,062 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 04:29:50,063 INFO L168 Benchmark]: Toolchain (without parser) took 14054.30 ms. Allocated memory was 147.3 MB in the beginning and 432.5 MB in the end (delta: 285.2 MB). Free memory was 104.3 MB in the beginning and 292.6 MB in the end (delta: -188.3 MB). Peak memory consumption was 96.9 MB. Max. memory is 7.1 GB. [2020-08-22 04:29:50,064 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 147.3 MB. Free memory was 123.7 MB in the beginning and 123.5 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-22 04:29:50,065 INFO L168 Benchmark]: CACSL2BoogieTranslator took 647.81 ms. Allocated memory was 147.3 MB in the beginning and 207.1 MB in the end (delta: 59.8 MB). Free memory was 104.0 MB in the beginning and 173.4 MB in the end (delta: -69.3 MB). Peak memory consumption was 23.3 MB. Max. memory is 7.1 GB. [2020-08-22 04:29:50,066 INFO L168 Benchmark]: Boogie Preprocessor took 94.74 ms. Allocated memory is still 207.1 MB. Free memory was 173.4 MB in the beginning and 169.4 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. [2020-08-22 04:29:50,067 INFO L168 Benchmark]: RCFGBuilder took 1197.10 ms. Allocated memory was 207.1 MB in the beginning and 235.4 MB in the end (delta: 28.3 MB). Free memory was 169.4 MB in the beginning and 190.4 MB in the end (delta: -21.0 MB). Peak memory consumption was 78.5 MB. Max. memory is 7.1 GB. [2020-08-22 04:29:50,068 INFO L168 Benchmark]: TraceAbstraction took 12110.03 ms. Allocated memory was 235.4 MB in the beginning and 432.5 MB in the end (delta: 197.1 MB). Free memory was 190.4 MB in the beginning and 292.6 MB in the end (delta: -102.2 MB). Peak memory consumption was 94.9 MB. Max. memory is 7.1 GB. [2020-08-22 04:29:50,071 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 147.3 MB. Free memory was 123.7 MB in the beginning and 123.5 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 647.81 ms. Allocated memory was 147.3 MB in the beginning and 207.1 MB in the end (delta: 59.8 MB). Free memory was 104.0 MB in the beginning and 173.4 MB in the end (delta: -69.3 MB). Peak memory consumption was 23.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 94.74 ms. Allocated memory is still 207.1 MB. Free memory was 173.4 MB in the beginning and 169.4 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1197.10 ms. Allocated memory was 207.1 MB in the beginning and 235.4 MB in the end (delta: 28.3 MB). Free memory was 169.4 MB in the beginning and 190.4 MB in the end (delta: -21.0 MB). Peak memory consumption was 78.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 12110.03 ms. Allocated memory was 235.4 MB in the beginning and 432.5 MB in the end (delta: 197.1 MB). Free memory was 190.4 MB in the beginning and 292.6 MB in the end (delta: -102.2 MB). Peak memory consumption was 94.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 883]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L47] int waterLevel = 1; [L48] int methaneLevelCritical = 0; [L136] int cleanupTimeShifts = 4; [L407] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L675] int pumpRunning = 0; [L676] int systemActive = 1; [L215] int retValue_acc ; [L216] int tmp ; [L220] FCALL select_helpers() [L221] FCALL select_features() [L222] CALL, EXPR valid_product() [L914] int retValue_acc ; [L917] retValue_acc = 1 [L918] return (retValue_acc); [L222] RET, EXPR valid_product() [L222] tmp = valid_product() [L224] COND TRUE \read(tmp) [L226] FCALL setup() [L227] CALL runTest() [L206] CALL test() [L606] int splverifierCounter ; [L607] int tmp ; [L608] int tmp___0 ; [L609] int tmp___1 ; [L610] int tmp___2 ; [L613] splverifierCounter = 0 [L615] COND TRUE 1 [L617] COND TRUE splverifierCounter < 4 [L623] tmp = __VERIFIER_nondet_int() [L625] COND TRUE \read(tmp) [L627] CALL waterRise() [L65] COND TRUE waterLevel < 2 [L66] waterLevel = waterLevel + 1 [L627] RET waterRise() [L633] tmp___0 = __VERIFIER_nondet_int() [L635] COND FALSE !(\read(tmp___0)) [L643] tmp___2 = __VERIFIER_nondet_int() [L645] COND FALSE !(\read(tmp___2)) [L651] tmp___1 = __VERIFIER_nondet_int() [L653] COND TRUE \read(tmp___1) [L660] CALL timeShift() [L683] COND FALSE !(\read(pumpRunning)) [L690] COND TRUE \read(systemActive) [L692] CALL processEnvironment() [L738] int tmp ; [L741] COND FALSE !(\read(pumpRunning)) [L756] CALL processEnvironment__wrappee__methaneQuery() [L712] int tmp ; [L715] COND FALSE !(\read(pumpRunning)) [L730] FCALL processEnvironment__wrappee__base() [L756] RET processEnvironment__wrappee__methaneQuery() [L692] RET processEnvironment() [L698] CALL __utac_acc__Specification3_spec__1() [L924] int tmp ; [L925] int tmp___0 ; [L926] int tmp___1 ; [L930] CALL, EXPR isMethaneLevelCritical() [L86] int retValue_acc ; [L89] retValue_acc = methaneLevelCritical [L90] return (retValue_acc); [L930] RET, EXPR isMethaneLevelCritical() [L930] tmp = isMethaneLevelCritical() [L932] COND FALSE !(\read(tmp)) [L936] CALL, EXPR getWaterLevel() [L118] int retValue_acc ; [L121] retValue_acc = waterLevel [L122] return (retValue_acc); [L936] RET, EXPR getWaterLevel() [L936] tmp___0 = getWaterLevel() [L938] COND TRUE tmp___0 == 2 [L940] CALL, EXPR isPumpRunning() [L807] int retValue_acc ; [L810] retValue_acc = pumpRunning [L811] return (retValue_acc); [L940] RET, EXPR isPumpRunning() [L940] tmp___1 = isPumpRunning() [L942] COND FALSE !(\read(tmp___1)) [L946] CALL __automaton_fail() [L883] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 40 procedures, 238 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 12.0s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 9.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 519 SDtfs, 796 SDslu, 260 SDs, 0 SdLazy, 1585 SolverSat, 534 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 138 GetRequests, 104 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 3.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=216occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 5 MinimizatonAttempts, 149 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 384 NumberOfCodeBlocks, 384 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 304 ConstructedInterpolants, 0 QuantifiedInterpolants, 88076 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...