/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 interpolation-heuristic=FIRST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product36.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 14:45:41,640 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 14:45:41,642 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 14:45:41,682 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 14:45:41,683 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 14:45:41,691 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 14:45:41,693 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 14:45:41,697 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 14:45:41,699 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 14:45:41,702 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 14:45:41,703 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 14:45:41,704 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 14:45:41,704 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 14:45:41,707 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 14:45:41,709 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 14:45:41,711 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 14:45:41,712 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 14:45:41,713 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 14:45:41,715 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 14:45:41,723 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 14:45:41,726 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 14:45:41,727 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 14:45:41,728 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 14:45:41,729 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 14:45:41,741 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 14:45:41,741 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 14:45:41,742 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 14:45:41,742 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 14:45:41,743 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 14:45:41,752 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 14:45:41,752 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 14:45:41,753 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 14:45:41,754 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 14:45:41,754 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 14:45:41,758 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 14:45:41,759 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 14:45:41,759 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 14:45:41,760 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 14:45:41,760 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 14:45:41,760 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 14:45:41,762 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 14:45:41,762 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 [2020-08-21 14:45:41,805 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 14:45:41,805 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 14:45:41,807 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 14:45:41,807 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 14:45:41,807 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 14:45:41,807 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 14:45:41,807 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 14:45:41,808 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 14:45:41,808 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 14:45:41,808 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 14:45:41,808 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 14:45:41,808 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 14:45:41,809 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 14:45:41,810 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 14:45:41,810 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 14:45:41,810 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 14:45:41,810 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 14:45:41,810 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 14:45:41,811 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 14:45:41,811 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 14:45:41,811 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 14:45:41,811 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 14:45:41,811 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 14:45:41,812 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 14:45:41,812 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 14:45:41,812 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 14:45:41,812 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 14:45:41,812 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 14:45:41,813 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 14:45:41,813 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 -> interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> interpolation-heuristic=FIRST;log-additional-information=true; [2020-08-21 14:45:42,163 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 14:45:42,177 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 14:45:42,181 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 14:45:42,182 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 14:45:42,183 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 14:45:42,184 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product36.cil.c [2020-08-21 14:45:42,252 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a496588e1/b0f70d54092b4a4da28ddadb04711b3d/FLAGce7e7fbb4 [2020-08-21 14:45:42,753 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 14:45:42,754 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product36.cil.c [2020-08-21 14:45:42,776 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a496588e1/b0f70d54092b4a4da28ddadb04711b3d/FLAGce7e7fbb4 [2020-08-21 14:45:43,122 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a496588e1/b0f70d54092b4a4da28ddadb04711b3d [2020-08-21 14:45:43,132 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 14:45:43,133 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 14:45:43,134 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 14:45:43,135 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 14:45:43,138 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 14:45:43,139 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 02:45:43" (1/1) ... [2020-08-21 14:45:43,141 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@87441be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:45:43, skipping insertion in model container [2020-08-21 14:45:43,141 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 02:45:43" (1/1) ... [2020-08-21 14:45:43,149 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 14:45:43,197 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 14:45:43,612 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 14:45:43,637 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 14:45:43,767 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 14:45:43,797 INFO L208 MainTranslator]: Completed translation [2020-08-21 14:45:43,798 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:45:43 WrapperNode [2020-08-21 14:45:43,798 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 14:45:43,799 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 14:45:43,799 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 14:45:43,799 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 14:45:43,812 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:45:43" (1/1) ... [2020-08-21 14:45:43,812 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:45:43" (1/1) ... [2020-08-21 14:45:43,830 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:45:43" (1/1) ... [2020-08-21 14:45:43,831 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:45:43" (1/1) ... [2020-08-21 14:45:43,861 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:45:43" (1/1) ... [2020-08-21 14:45:43,872 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:45:43" (1/1) ... [2020-08-21 14:45:43,877 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:45:43" (1/1) ... [2020-08-21 14:45:43,884 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 14:45:43,885 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 14:45:43,885 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 14:45:43,885 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 14:45:43,890 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:45:43" (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 [2020-08-21 14:45:43,958 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 14:45:43,959 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 14:45:43,959 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 14:45:43,959 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 14:45:43,959 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 14:45:43,959 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 14:45:43,960 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 14:45:43,960 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 14:45:43,960 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 14:45:43,960 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 14:45:43,960 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 14:45:43,960 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 14:45:43,961 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 14:45:43,961 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 14:45:43,961 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 14:45:43,961 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 14:45:43,961 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 14:45:43,962 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 14:45:43,962 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-21 14:45:43,962 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-21 14:45:43,962 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-21 14:45:43,962 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 14:45:43,963 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 14:45:43,963 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 14:45:43,963 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 14:45:43,963 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 14:45:43,963 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 14:45:43,963 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 14:45:43,964 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-21 14:45:43,964 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 14:45:43,964 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 14:45:43,964 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 14:45:43,964 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 14:45:43,965 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 14:45:43,965 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 14:45:43,965 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 14:45:43,965 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 14:45:43,965 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 14:45:43,965 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-21 14:45:43,966 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 14:45:43,966 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 14:45:43,966 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 14:45:43,966 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 14:45:43,966 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 14:45:43,967 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 14:45:43,967 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 14:45:43,967 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 14:45:43,967 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 14:45:43,967 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 14:45:43,967 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 14:45:43,967 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 14:45:43,968 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 14:45:43,968 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 14:45:43,968 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 14:45:43,968 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 14:45:43,968 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 14:45:43,968 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 14:45:43,969 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 14:45:43,969 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 14:45:43,969 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 14:45:43,969 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 14:45:43,969 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 14:45:43,969 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 14:45:43,970 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-21 14:45:43,970 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 14:45:43,970 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 14:45:43,970 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 14:45:43,970 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 14:45:43,970 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 14:45:43,970 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-21 14:45:43,971 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-21 14:45:43,971 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-21 14:45:43,971 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 14:45:43,971 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 14:45:43,971 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-21 14:45:43,971 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 14:45:43,972 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 14:45:43,972 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 14:45:43,972 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 14:45:43,972 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 14:45:43,972 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 14:45:43,972 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 14:45:43,973 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 14:45:43,973 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 14:45:43,973 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 14:45:43,973 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 14:45:43,973 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 14:45:43,973 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 14:45:43,973 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 14:45:43,974 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 14:45:43,974 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 14:45:43,974 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 14:45:45,076 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 14:45:45,077 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 14:45:45,086 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 02:45:45 BoogieIcfgContainer [2020-08-21 14:45:45,087 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 14:45:45,088 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 14:45:45,089 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 14:45:45,092 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 14:45:45,093 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 02:45:43" (1/3) ... [2020-08-21 14:45:45,094 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6552c335 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 02:45:45, skipping insertion in model container [2020-08-21 14:45:45,094 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:45:43" (2/3) ... [2020-08-21 14:45:45,095 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6552c335 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 02:45:45, skipping insertion in model container [2020-08-21 14:45:45,095 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 02:45:45" (3/3) ... [2020-08-21 14:45:45,097 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product36.cil.c [2020-08-21 14:45:45,111 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 14:45:45,122 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 14:45:45,134 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 14:45:45,157 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 14:45:45,157 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 14:45:45,158 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 14:45:45,158 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 14:45:45,158 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 14:45:45,158 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 14:45:45,158 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 14:45:45,158 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 14:45:45,179 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states. [2020-08-21 14:45:45,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-21 14:45:45,190 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:45:45,191 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] [2020-08-21 14:45:45,192 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:45:45,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:45:45,197 INFO L82 PathProgramCache]: Analyzing trace with hash -16432852, now seen corresponding path program 1 times [2020-08-21 14:45:45,207 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:45:45,207 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1342333920] [2020-08-21 14:45:45,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:45:45,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:45:45,909 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 14:45:45,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:45:45,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:45:45,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:45:45,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:45:45,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:45:45,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:45:45,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:45:45,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:45:45,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 14:45:45,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:45:45,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 14:45:45,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:45:45,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 14:45:45,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:45:45,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 14:45:45,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:45:46,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 14:45:46,002 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1342333920] [2020-08-21 14:45:46,005 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 14:45:46,006 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 14:45:46,007 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071686611] [2020-08-21 14:45:46,017 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 14:45:46,017 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:45:46,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 14:45:46,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 14:45:46,038 INFO L87 Difference]: Start difference. First operand 170 states. Second operand 3 states. [2020-08-21 14:45:47,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:45:47,172 INFO L93 Difference]: Finished difference Result 290 states and 378 transitions. [2020-08-21 14:45:47,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 14:45:47,175 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-08-21 14:45:47,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:45:47,190 INFO L225 Difference]: With dead ends: 290 [2020-08-21 14:45:47,190 INFO L226 Difference]: Without dead ends: 157 [2020-08-21 14:45:47,196 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 14:45:47,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-08-21 14:45:47,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 124. [2020-08-21 14:45:47,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-08-21 14:45:47,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 144 transitions. [2020-08-21 14:45:47,292 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 144 transitions. Word has length 52 [2020-08-21 14:45:47,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:45:47,292 INFO L479 AbstractCegarLoop]: Abstraction has 124 states and 144 transitions. [2020-08-21 14:45:47,293 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 14:45:47,293 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 144 transitions. [2020-08-21 14:45:47,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-21 14:45:47,297 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:45:47,297 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] [2020-08-21 14:45:47,297 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 14:45:47,298 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:45:47,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:45:47,298 INFO L82 PathProgramCache]: Analyzing trace with hash -687450637, now seen corresponding path program 1 times [2020-08-21 14:45:47,298 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:45:47,299 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1185252260] [2020-08-21 14:45:47,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:45:47,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:45:47,668 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 14:45:47,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:45:47,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:45:47,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:45:47,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:45:47,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:45:47,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:45:47,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:45:47,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:45:47,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 14:45:47,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:45:47,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 14:45:47,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:45:47,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 14:45:47,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:45:47,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-21 14:45:47,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:45:47,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 14:45:47,742 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1185252260] [2020-08-21 14:45:47,742 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 14:45:47,742 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 14:45:47,743 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104479413] [2020-08-21 14:45:47,745 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 14:45:47,745 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:45:47,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 14:45:47,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 14:45:47,746 INFO L87 Difference]: Start difference. First operand 124 states and 144 transitions. Second operand 4 states. [2020-08-21 14:45:48,132 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 14:45:48,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:45:48,850 INFO L93 Difference]: Finished difference Result 210 states and 255 transitions. [2020-08-21 14:45:48,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 14:45:48,851 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-08-21 14:45:48,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:45:48,855 INFO L225 Difference]: With dead ends: 210 [2020-08-21 14:45:48,855 INFO L226 Difference]: Without dead ends: 141 [2020-08-21 14:45:48,856 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 [2020-08-21 14:45:48,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2020-08-21 14:45:48,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 115. [2020-08-21 14:45:48,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-08-21 14:45:48,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 132 transitions. [2020-08-21 14:45:48,893 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 132 transitions. Word has length 53 [2020-08-21 14:45:48,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:45:48,894 INFO L479 AbstractCegarLoop]: Abstraction has 115 states and 132 transitions. [2020-08-21 14:45:48,894 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 14:45:48,894 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 132 transitions. [2020-08-21 14:45:48,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-08-21 14:45:48,896 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:45:48,896 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] [2020-08-21 14:45:48,897 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 14:45:48,897 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:45:48,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:45:48,897 INFO L82 PathProgramCache]: Analyzing trace with hash 585649573, now seen corresponding path program 1 times [2020-08-21 14:45:48,898 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:45:48,898 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1900793790] [2020-08-21 14:45:48,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:45:48,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:45:49,195 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 14:45:49,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:45:49,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:45:49,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:45:49,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:45:49,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:45:49,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:45:49,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:45:49,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:45:49,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 14:45:49,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:45:49,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 14:45:49,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:45:49,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 14:45:49,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:45:49,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 14:45:49,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:45:49,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 14:45:49,282 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1900793790] [2020-08-21 14:45:49,283 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 14:45:49,283 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 14:45:49,284 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492823658] [2020-08-21 14:45:49,288 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 14:45:49,288 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:45:49,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 14:45:49,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 14:45:49,289 INFO L87 Difference]: Start difference. First operand 115 states and 132 transitions. Second operand 8 states. [2020-08-21 14:45:49,677 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 14:45:49,959 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 14:45:50,194 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 14:45:50,461 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 14:45:51,193 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 14:45:52,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:45:52,764 INFO L93 Difference]: Finished difference Result 402 states and 494 transitions. [2020-08-21 14:45:52,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 14:45:52,773 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 58 [2020-08-21 14:45:52,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:45:52,778 INFO L225 Difference]: With dead ends: 402 [2020-08-21 14:45:52,778 INFO L226 Difference]: Without dead ends: 311 [2020-08-21 14:45:52,779 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-08-21 14:45:52,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2020-08-21 14:45:52,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 238. [2020-08-21 14:45:52,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2020-08-21 14:45:52,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 283 transitions. [2020-08-21 14:45:52,888 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 283 transitions. Word has length 58 [2020-08-21 14:45:52,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:45:52,889 INFO L479 AbstractCegarLoop]: Abstraction has 238 states and 283 transitions. [2020-08-21 14:45:52,889 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 14:45:52,889 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 283 transitions. [2020-08-21 14:45:52,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-08-21 14:45:52,892 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:45:52,892 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] [2020-08-21 14:45:52,893 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 14:45:52,893 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:45:52,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:45:52,893 INFO L82 PathProgramCache]: Analyzing trace with hash -107584034, now seen corresponding path program 1 times [2020-08-21 14:45:52,893 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:45:52,894 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1176017293] [2020-08-21 14:45:52,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:45:52,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:45:53,151 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 14:45:53,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:45:53,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:45:53,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:45:53,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:45:53,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:45:53,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:45:53,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:45:53,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:45:53,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 14:45:53,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:45:53,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 14:45:53,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:45:53,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 14:45:53,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:45:53,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-21 14:45:53,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:45:53,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-21 14:45:53,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:45:53,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 14:45:53,244 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1176017293] [2020-08-21 14:45:53,245 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 14:45:53,245 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 14:45:53,245 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449546043] [2020-08-21 14:45:53,246 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 14:45:53,246 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:45:53,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 14:45:53,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 14:45:53,247 INFO L87 Difference]: Start difference. First operand 238 states and 283 transitions. Second operand 8 states. [2020-08-21 14:45:53,681 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 14:45:54,953 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 14:45:55,256 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 14:45:55,527 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 14:45:55,810 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 14:45:56,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:45:56,487 INFO L93 Difference]: Finished difference Result 729 states and 953 transitions. [2020-08-21 14:45:56,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-21 14:45:56,492 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 63 [2020-08-21 14:45:56,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:45:56,499 INFO L225 Difference]: With dead ends: 729 [2020-08-21 14:45:56,499 INFO L226 Difference]: Without dead ends: 515 [2020-08-21 14:45:56,506 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 [2020-08-21 14:45:56,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2020-08-21 14:45:56,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 449. [2020-08-21 14:45:56,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 449 states. [2020-08-21 14:45:56,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 545 transitions. [2020-08-21 14:45:56,639 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 545 transitions. Word has length 63 [2020-08-21 14:45:56,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:45:56,640 INFO L479 AbstractCegarLoop]: Abstraction has 449 states and 545 transitions. [2020-08-21 14:45:56,640 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 14:45:56,640 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 545 transitions. [2020-08-21 14:45:56,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-08-21 14:45:56,643 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:45:56,643 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] [2020-08-21 14:45:56,644 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 14:45:56,644 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:45:56,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:45:56,644 INFO L82 PathProgramCache]: Analyzing trace with hash -1291077628, now seen corresponding path program 1 times [2020-08-21 14:45:56,645 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:45:56,645 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [981611748] [2020-08-21 14:45:56,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:45:56,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:45:56,929 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 14:45:56,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:45:56,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:45:56,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:45:56,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:45:56,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:45:56,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:45:56,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:45:56,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:45:56,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 14:45:56,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:45:56,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 14:45:56,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:45:56,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 14:45:56,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:45:56,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 14:45:56,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:45:56,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-21 14:45:56,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:45:56,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-21 14:45:56,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:45:56,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 14:45:56,998 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [981611748] [2020-08-21 14:45:56,999 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 14:45:56,999 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 14:45:56,999 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19252049] [2020-08-21 14:45:56,999 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 14:45:57,000 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:45:57,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 14:45:57,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-21 14:45:57,000 INFO L87 Difference]: Start difference. First operand 449 states and 545 transitions. Second operand 6 states. [2020-08-21 14:45:57,310 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 14:45:58,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:45:58,952 INFO L93 Difference]: Finished difference Result 1117 states and 1430 transitions. [2020-08-21 14:45:58,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-21 14:45:58,953 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 67 [2020-08-21 14:45:58,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:45:58,958 INFO L225 Difference]: With dead ends: 1117 [2020-08-21 14:45:58,958 INFO L226 Difference]: Without dead ends: 692 [2020-08-21 14:45:58,960 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-08-21 14:45:58,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 692 states. [2020-08-21 14:45:59,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 692 to 639. [2020-08-21 14:45:59,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 639 states. [2020-08-21 14:45:59,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 639 states to 639 states and 776 transitions. [2020-08-21 14:45:59,064 INFO L78 Accepts]: Start accepts. Automaton has 639 states and 776 transitions. Word has length 67 [2020-08-21 14:45:59,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:45:59,064 INFO L479 AbstractCegarLoop]: Abstraction has 639 states and 776 transitions. [2020-08-21 14:45:59,064 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 14:45:59,065 INFO L276 IsEmpty]: Start isEmpty. Operand 639 states and 776 transitions. [2020-08-21 14:45:59,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-08-21 14:45:59,066 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:45:59,066 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] [2020-08-21 14:45:59,067 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 14:45:59,067 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:45:59,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:45:59,067 INFO L82 PathProgramCache]: Analyzing trace with hash -1290048412, now seen corresponding path program 1 times [2020-08-21 14:45:59,068 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:45:59,068 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1934030159] [2020-08-21 14:45:59,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:45:59,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 14:45:59,122 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 14:45:59,122 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 14:45:59,126 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 14:45:59,148 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 02:45:59 BoogieIcfgContainer [2020-08-21 14:45:59,149 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 14:45:59,151 INFO L168 Benchmark]: Toolchain (without parser) took 16017.31 ms. Allocated memory was 139.5 MB in the beginning and 490.2 MB in the end (delta: 350.7 MB). Free memory was 101.2 MB in the beginning and 257.2 MB in the end (delta: -156.0 MB). Peak memory consumption was 194.8 MB. Max. memory is 7.1 GB. [2020-08-21 14:45:59,152 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-21 14:45:59,153 INFO L168 Benchmark]: CACSL2BoogieTranslator took 664.28 ms. Allocated memory was 139.5 MB in the beginning and 201.9 MB in the end (delta: 62.4 MB). Free memory was 101.0 MB in the beginning and 170.6 MB in the end (delta: -69.6 MB). Peak memory consumption was 26.3 MB. Max. memory is 7.1 GB. [2020-08-21 14:45:59,153 INFO L168 Benchmark]: Boogie Preprocessor took 85.65 ms. Allocated memory is still 201.9 MB. Free memory was 170.6 MB in the beginning and 166.4 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. [2020-08-21 14:45:59,154 INFO L168 Benchmark]: RCFGBuilder took 1201.68 ms. Allocated memory was 201.9 MB in the beginning and 234.4 MB in the end (delta: 32.5 MB). Free memory was 166.4 MB in the beginning and 196.3 MB in the end (delta: -29.9 MB). Peak memory consumption was 85.1 MB. Max. memory is 7.1 GB. [2020-08-21 14:45:59,155 INFO L168 Benchmark]: TraceAbstraction took 14060.49 ms. Allocated memory was 234.4 MB in the beginning and 490.2 MB in the end (delta: 255.9 MB). Free memory was 196.3 MB in the beginning and 257.2 MB in the end (delta: -60.9 MB). Peak memory consumption was 195.0 MB. Max. memory is 7.1 GB. [2020-08-21 14:45:59,159 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 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 664.28 ms. Allocated memory was 139.5 MB in the beginning and 201.9 MB in the end (delta: 62.4 MB). Free memory was 101.0 MB in the beginning and 170.6 MB in the end (delta: -69.6 MB). Peak memory consumption was 26.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 85.65 ms. Allocated memory is still 201.9 MB. Free memory was 170.6 MB in the beginning and 166.4 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1201.68 ms. Allocated memory was 201.9 MB in the beginning and 234.4 MB in the end (delta: 32.5 MB). Free memory was 166.4 MB in the beginning and 196.3 MB in the end (delta: -29.9 MB). Peak memory consumption was 85.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 14060.49 ms. Allocated memory was 234.4 MB in the beginning and 490.2 MB in the end (delta: 255.9 MB). Free memory was 196.3 MB in the beginning and 257.2 MB in the end (delta: -60.9 MB). Peak memory consumption was 195.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 44]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L218] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L426] int pumpRunning = 0; [L427] int systemActive = 1; [L675] int waterLevel = 1; [L676] int methaneLevelCritical = 0; [L769] int cleanupTimeShifts = 4; [L845] int retValue_acc ; [L846] int tmp ; [L850] FCALL select_helpers() [L851] FCALL select_features() [L852] CALL, EXPR valid_product() [L894] int retValue_acc ; [L897] retValue_acc = 1 [L898] return (retValue_acc); [L852] RET, EXPR valid_product() [L852] tmp = valid_product() [L854] COND TRUE \read(tmp) [L856] FCALL setup() [L857] CALL runTest() [L836] 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() [L693] COND TRUE waterLevel < 2 [L694] 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) [L655] CALL stopSystem() [L582] COND FALSE !(\read(pumpRunning)) [L589] systemActive = 0 [L655] RET stopSystem() [L662] CALL timeShift() [L434] COND FALSE !(\read(pumpRunning)) [L441] COND FALSE !(\read(systemActive)) [L449] CALL __utac_acc__Specification3_spec__1() [L904] int tmp ; [L905] int tmp___0 ; [L906] int tmp___1 ; [L910] CALL, EXPR isMethaneLevelCritical() [L714] int retValue_acc ; [L717] retValue_acc = methaneLevelCritical [L718] return (retValue_acc); [L910] RET, EXPR isMethaneLevelCritical() [L910] tmp = isMethaneLevelCritical() [L912] COND FALSE !(\read(tmp)) [L916] CALL, EXPR getWaterLevel() [L746] int retValue_acc ; [L749] retValue_acc = waterLevel [L750] return (retValue_acc); [L916] RET, EXPR getWaterLevel() [L916] tmp___0 = getWaterLevel() [L918] COND TRUE tmp___0 == 2 [L920] CALL, EXPR isPumpRunning() [L515] int retValue_acc ; [L518] retValue_acc = pumpRunning [L519] return (retValue_acc); [L920] RET, EXPR isPumpRunning() [L920] tmp___1 = isPumpRunning() [L922] COND FALSE !(\read(tmp___1)) [L926] CALL __automaton_fail() [L44] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 228 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 13.9s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 11.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 575 SDtfs, 948 SDslu, 418 SDs, 0 SdLazy, 2130 SolverSat, 619 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 135 GetRequests, 98 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 3.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=639occurred 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, 251 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 360 NumberOfCodeBlocks, 360 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 288 ConstructedInterpolants, 0 QuantifiedInterpolants, 82716 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...