/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=5 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product33.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 16:50:39,530 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 16:50:39,533 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 16:50:39,574 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 16:50:39,574 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 16:50:39,586 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 16:50:39,588 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 16:50:39,589 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 16:50:39,591 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 16:50:39,592 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 16:50:39,592 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 16:50:39,593 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 16:50:39,594 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 16:50:39,594 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 16:50:39,595 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 16:50:39,596 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 16:50:39,597 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 16:50:39,598 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 16:50:39,599 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 16:50:39,601 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 16:50:39,602 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 16:50:39,603 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 16:50:39,604 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 16:50:39,605 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 16:50:39,607 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 16:50:39,607 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 16:50:39,607 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 16:50:39,608 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 16:50:39,609 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 16:50:39,609 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 16:50:39,609 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 16:50:39,610 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 16:50:39,611 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 16:50:39,611 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 16:50:39,612 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 16:50:39,613 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 16:50:39,613 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 16:50:39,613 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 16:50:39,614 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 16:50:39,614 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 16:50:39,615 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 16:50:39,616 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 [2020-08-18 16:50:39,637 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 16:50:39,638 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 16:50:39,639 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 16:50:39,639 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 16:50:39,639 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 16:50:39,639 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 16:50:39,640 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 16:50:39,640 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 16:50:39,640 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 16:50:39,640 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 16:50:39,640 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 16:50:39,641 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 16:50:39,641 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 16:50:39,641 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 16:50:39,641 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 16:50:39,641 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 16:50:39,641 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 16:50:39,642 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 16:50:39,642 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 16:50:39,642 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 16:50:39,642 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 16:50:39,642 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 16:50:39,643 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 16:50:39,643 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 16:50:39,643 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 16:50:39,643 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 16:50:39,643 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 16:50:39,644 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 16:50:39,644 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 16:50:39,644 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=5;interpolation-heuristic=SMALLEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLEST; [2020-08-18 16:50:39,969 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 16:50:39,993 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 16:50:39,998 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 16:50:40,000 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 16:50:40,001 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 16:50:40,002 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product33.cil.c [2020-08-18 16:50:40,077 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0b0148a62/e5e9360633dd469d899bfdd392783b8e/FLAG414f96688 [2020-08-18 16:50:40,574 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 16:50:40,575 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product33.cil.c [2020-08-18 16:50:40,599 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0b0148a62/e5e9360633dd469d899bfdd392783b8e/FLAG414f96688 [2020-08-18 16:50:40,927 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0b0148a62/e5e9360633dd469d899bfdd392783b8e [2020-08-18 16:50:40,936 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 16:50:40,937 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 16:50:40,939 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 16:50:40,939 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 16:50:40,943 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 16:50:40,944 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 04:50:40" (1/1) ... [2020-08-18 16:50:40,947 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2aa713d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:50:40, skipping insertion in model container [2020-08-18 16:50:40,947 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 04:50:40" (1/1) ... [2020-08-18 16:50:40,956 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 16:50:41,018 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 16:50:41,447 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 16:50:41,459 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 16:50:41,562 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 16:50:41,610 INFO L208 MainTranslator]: Completed translation [2020-08-18 16:50:41,612 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:50:41 WrapperNode [2020-08-18 16:50:41,612 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 16:50:41,615 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 16:50:41,615 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 16:50:41,615 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 16:50:41,626 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:50:41" (1/1) ... [2020-08-18 16:50:41,626 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:50:41" (1/1) ... [2020-08-18 16:50:41,646 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:50:41" (1/1) ... [2020-08-18 16:50:41,646 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:50:41" (1/1) ... [2020-08-18 16:50:41,674 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:50:41" (1/1) ... [2020-08-18 16:50:41,683 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:50:41" (1/1) ... [2020-08-18 16:50:41,689 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:50:41" (1/1) ... [2020-08-18 16:50:41,696 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 16:50:41,697 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 16:50:41,697 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 16:50:41,697 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 16:50:41,698 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:50:41" (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 [2020-08-18 16:50:41,760 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 16:50:41,760 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 16:50:41,760 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 16:50:41,760 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 16:50:41,760 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 16:50:41,761 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 16:50:41,761 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 16:50:41,761 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 16:50:41,761 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 16:50:41,761 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 16:50:41,761 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 16:50:41,762 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 16:50:41,762 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 16:50:41,762 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 16:50:41,762 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 16:50:41,762 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 16:50:41,762 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 16:50:41,763 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 16:50:41,763 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 16:50:41,763 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 16:50:41,763 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 16:50:41,763 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 16:50:41,763 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 16:50:41,763 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 16:50:41,764 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 16:50:41,764 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 16:50:41,764 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 16:50:41,764 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 16:50:41,764 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 16:50:41,764 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-08-18 16:50:41,765 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 16:50:41,765 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 16:50:41,765 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 16:50:41,765 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 16:50:41,765 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 16:50:41,765 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 16:50:41,765 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 16:50:41,766 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 16:50:41,766 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 16:50:41,766 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 16:50:41,766 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 16:50:41,766 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 16:50:41,766 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 16:50:41,766 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 16:50:41,767 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 16:50:41,767 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 16:50:41,767 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 16:50:41,767 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 16:50:41,767 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 16:50:41,767 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 16:50:41,767 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 16:50:41,767 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 16:50:41,767 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 16:50:41,767 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 16:50:41,768 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 16:50:41,768 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 16:50:41,768 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 16:50:41,768 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 16:50:41,768 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 16:50:41,768 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 16:50:41,768 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 16:50:41,769 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 16:50:41,769 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 16:50:41,769 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 16:50:41,769 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 16:50:41,769 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 16:50:41,769 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 16:50:41,769 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-08-18 16:50:41,769 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 16:50:41,769 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 16:50:41,769 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 16:50:41,770 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 16:50:41,770 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 16:50:41,770 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 16:50:41,770 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 16:50:41,770 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 16:50:41,770 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 16:50:41,770 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 16:50:41,771 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 16:50:41,771 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 16:50:41,771 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 16:50:41,771 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 16:50:41,771 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 16:50:41,771 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 16:50:41,772 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 16:50:41,772 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 16:50:41,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 16:50:41,772 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 16:50:42,855 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 16:50:42,855 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 16:50:42,860 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 04:50:42 BoogieIcfgContainer [2020-08-18 16:50:42,861 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 16:50:42,862 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 16:50:42,862 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 16:50:42,866 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 16:50:42,866 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 04:50:40" (1/3) ... [2020-08-18 16:50:42,867 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4af0d147 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 04:50:42, skipping insertion in model container [2020-08-18 16:50:42,867 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:50:41" (2/3) ... [2020-08-18 16:50:42,867 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4af0d147 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 04:50:42, skipping insertion in model container [2020-08-18 16:50:42,868 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 04:50:42" (3/3) ... [2020-08-18 16:50:42,869 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product33.cil.c [2020-08-18 16:50:42,880 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 16:50:42,889 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 16:50:42,903 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 16:50:42,929 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 16:50:42,929 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 16:50:42,929 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 16:50:42,929 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 16:50:42,930 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 16:50:42,930 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 16:50:42,930 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 16:50:42,930 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 16:50:42,952 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states. [2020-08-18 16:50:42,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-18 16:50:42,962 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:50:42,963 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] [2020-08-18 16:50:42,964 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:50:42,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:50:42,970 INFO L82 PathProgramCache]: Analyzing trace with hash 936709255, now seen corresponding path program 1 times [2020-08-18 16:50:42,979 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:50:42,980 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1342566684] [2020-08-18 16:50:42,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:50:43,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:50:43,653 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:50:43,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:50:43,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:50:43,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:50:43,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:50:43,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:50:43,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:50:43,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:50:43,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:50:43,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:50:43,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:50:43,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 16:50:43,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:50:43,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 16:50:43,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:50:43,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:50:43,759 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1342566684] [2020-08-18 16:50:43,761 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:50:43,762 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 16:50:43,763 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469528348] [2020-08-18 16:50:43,775 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 16:50:43,777 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:50:43,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 16:50:43,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 16:50:43,795 INFO L87 Difference]: Start difference. First operand 151 states. Second operand 3 states. [2020-08-18 16:50:44,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:50:44,799 INFO L93 Difference]: Finished difference Result 249 states and 331 transitions. [2020-08-18 16:50:44,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 16:50:44,801 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-18 16:50:44,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:50:44,814 INFO L225 Difference]: With dead ends: 249 [2020-08-18 16:50:44,814 INFO L226 Difference]: Without dead ends: 135 [2020-08-18 16:50:44,820 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 16:50:44,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-08-18 16:50:44,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 105. [2020-08-18 16:50:44,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-08-18 16:50:44,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 123 transitions. [2020-08-18 16:50:44,907 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 123 transitions. Word has length 46 [2020-08-18 16:50:44,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:50:44,908 INFO L479 AbstractCegarLoop]: Abstraction has 105 states and 123 transitions. [2020-08-18 16:50:44,908 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 16:50:44,908 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 123 transitions. [2020-08-18 16:50:44,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-18 16:50:44,911 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:50:44,911 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] [2020-08-18 16:50:44,912 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 16:50:44,912 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:50:44,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:50:44,913 INFO L82 PathProgramCache]: Analyzing trace with hash -1814743517, now seen corresponding path program 1 times [2020-08-18 16:50:44,913 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:50:44,913 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1744584511] [2020-08-18 16:50:44,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:50:44,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:50:45,313 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:50:45,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:50:45,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:50:45,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:50:45,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:50:45,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:50:45,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:50:45,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:50:45,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:50:45,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:50:45,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:50:45,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 16:50:45,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:50:45,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 16:50:45,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:50:45,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:50:45,371 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1744584511] [2020-08-18 16:50:45,372 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:50:45,372 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 16:50:45,372 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795365032] [2020-08-18 16:50:45,374 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 16:50:45,374 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:50:45,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 16:50:45,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 16:50:45,375 INFO L87 Difference]: Start difference. First operand 105 states and 123 transitions. Second operand 4 states. [2020-08-18 16:50:45,781 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:50:46,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:50:46,403 INFO L93 Difference]: Finished difference Result 182 states and 222 transitions. [2020-08-18 16:50:46,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 16:50:46,404 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-18 16:50:46,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:50:46,407 INFO L225 Difference]: With dead ends: 182 [2020-08-18 16:50:46,408 INFO L226 Difference]: Without dead ends: 119 [2020-08-18 16:50:46,413 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-18 16:50:46,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-08-18 16:50:46,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 96. [2020-08-18 16:50:46,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-08-18 16:50:46,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 111 transitions. [2020-08-18 16:50:46,465 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 111 transitions. Word has length 47 [2020-08-18 16:50:46,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:50:46,466 INFO L479 AbstractCegarLoop]: Abstraction has 96 states and 111 transitions. [2020-08-18 16:50:46,467 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 16:50:46,467 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 111 transitions. [2020-08-18 16:50:46,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-18 16:50:46,481 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:50:46,481 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] [2020-08-18 16:50:46,481 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 16:50:46,482 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:50:46,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:50:46,482 INFO L82 PathProgramCache]: Analyzing trace with hash 268149636, now seen corresponding path program 1 times [2020-08-18 16:50:46,482 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:50:46,483 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1555714812] [2020-08-18 16:50:46,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:50:46,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:50:46,843 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:50:46,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:50:46,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:50:46,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:50:46,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:50:46,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:50:46,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:50:46,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:50:46,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:50:46,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:50:46,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:50:46,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 16:50:46,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:50:46,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 16:50:46,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:50:46,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:50:46,927 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1555714812] [2020-08-18 16:50:46,928 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:50:46,928 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 16:50:46,928 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093998384] [2020-08-18 16:50:46,929 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 16:50:46,929 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:50:46,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 16:50:46,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 16:50:46,930 INFO L87 Difference]: Start difference. First operand 96 states and 111 transitions. Second operand 8 states. [2020-08-18 16:50:47,298 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:50:47,578 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:50:47,840 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:50:48,122 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:50:49,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:50:49,057 INFO L93 Difference]: Finished difference Result 191 states and 236 transitions. [2020-08-18 16:50:49,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 16:50:49,061 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-08-18 16:50:49,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:50:49,064 INFO L225 Difference]: With dead ends: 191 [2020-08-18 16:50:49,064 INFO L226 Difference]: Without dead ends: 119 [2020-08-18 16:50:49,065 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-18 16:50:49,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-08-18 16:50:49,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 96. [2020-08-18 16:50:49,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-08-18 16:50:49,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 110 transitions. [2020-08-18 16:50:49,097 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 110 transitions. Word has length 51 [2020-08-18 16:50:49,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:50:49,097 INFO L479 AbstractCegarLoop]: Abstraction has 96 states and 110 transitions. [2020-08-18 16:50:49,098 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 16:50:49,098 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 110 transitions. [2020-08-18 16:50:49,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-18 16:50:49,099 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:50:49,099 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] [2020-08-18 16:50:49,099 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 16:50:49,100 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:50:49,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:50:49,100 INFO L82 PathProgramCache]: Analyzing trace with hash -169231603, now seen corresponding path program 1 times [2020-08-18 16:50:49,100 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:50:49,101 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1015478690] [2020-08-18 16:50:49,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:50:49,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:50:49,372 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:50:49,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:50:49,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:50:49,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:50:49,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:50:49,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:50:49,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:50:49,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:50:49,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:50:49,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:50:49,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:50:49,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-18 16:50:49,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:50:49,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:50:49,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:50:49,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 16:50:49,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:50:49,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-18 16:50:49,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:50:49,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:50:49,471 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1015478690] [2020-08-18 16:50:49,471 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:50:49,471 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 16:50:49,472 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614466411] [2020-08-18 16:50:49,472 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 16:50:49,472 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:50:49,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 16:50:49,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-18 16:50:49,474 INFO L87 Difference]: Start difference. First operand 96 states and 110 transitions. Second operand 6 states. [2020-08-18 16:50:49,772 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:50:50,890 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:50:51,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:50:51,341 INFO L93 Difference]: Finished difference Result 274 states and 340 transitions. [2020-08-18 16:50:51,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 16:50:51,342 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 59 [2020-08-18 16:50:51,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:50:51,348 INFO L225 Difference]: With dead ends: 274 [2020-08-18 16:50:51,348 INFO L226 Difference]: Without dead ends: 202 [2020-08-18 16:50:51,349 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-08-18 16:50:51,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-08-18 16:50:51,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 161. [2020-08-18 16:50:51,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-08-18 16:50:51,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 185 transitions. [2020-08-18 16:50:51,390 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 185 transitions. Word has length 59 [2020-08-18 16:50:51,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:50:51,391 INFO L479 AbstractCegarLoop]: Abstraction has 161 states and 185 transitions. [2020-08-18 16:50:51,391 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 16:50:51,391 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 185 transitions. [2020-08-18 16:50:51,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-08-18 16:50:51,392 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:50:51,393 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] [2020-08-18 16:50:51,393 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 16:50:51,393 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:50:51,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:50:51,393 INFO L82 PathProgramCache]: Analyzing trace with hash 1300839735, now seen corresponding path program 1 times [2020-08-18 16:50:51,394 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:50:51,394 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [508766389] [2020-08-18 16:50:51,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:50:51,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:50:51,712 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:50:51,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:50:51,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:50:51,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:50:51,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:50:51,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:50:51,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:50:51,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:50:51,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:50:51,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:50:51,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:50:51,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-18 16:50:51,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:50:51,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:50:51,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:50:51,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:50:51,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:50:51,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:50:51,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:50:51,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-18 16:50:51,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:50:51,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-18 16:50:51,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:50:51,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:50:51,797 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [508766389] [2020-08-18 16:50:51,797 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:50:51,797 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 16:50:51,798 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639591114] [2020-08-18 16:50:51,798 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 16:50:51,798 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:50:51,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 16:50:51,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 16:50:51,799 INFO L87 Difference]: Start difference. First operand 161 states and 185 transitions. Second operand 8 states. [2020-08-18 16:50:52,136 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:50:53,179 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:50:53,448 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:50:53,686 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:50:53,906 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:50:54,198 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:50:54,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:50:54,862 INFO L93 Difference]: Finished difference Result 478 states and 600 transitions. [2020-08-18 16:50:54,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 16:50:54,865 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 73 [2020-08-18 16:50:54,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:50:54,870 INFO L225 Difference]: With dead ends: 478 [2020-08-18 16:50:54,870 INFO L226 Difference]: Without dead ends: 341 [2020-08-18 16:50:54,871 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-08-18 16:50:54,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2020-08-18 16:50:54,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 277. [2020-08-18 16:50:54,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 277 states. [2020-08-18 16:50:54,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 320 transitions. [2020-08-18 16:50:54,943 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 320 transitions. Word has length 73 [2020-08-18 16:50:54,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:50:54,943 INFO L479 AbstractCegarLoop]: Abstraction has 277 states and 320 transitions. [2020-08-18 16:50:54,943 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 16:50:54,944 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 320 transitions. [2020-08-18 16:50:54,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-08-18 16:50:54,945 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:50:54,945 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:50:54,945 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 16:50:54,946 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:50:54,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:50:54,946 INFO L82 PathProgramCache]: Analyzing trace with hash 2135215483, now seen corresponding path program 1 times [2020-08-18 16:50:54,946 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:50:54,946 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [140087296] [2020-08-18 16:50:54,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:50:54,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:50:55,211 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:50:55,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:50:55,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:50:55,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:50:55,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:50:55,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:50:55,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:50:55,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:50:55,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:50:55,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:50:55,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:50:55,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 16:50:55,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:50:55,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 16:50:55,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:50:55,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:50:55,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:50:55,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:50:55,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:50:55,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:50:55,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:50:55,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-08-18 16:50:55,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:50:55,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-18 16:50:55,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:50:55,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:50:55,309 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [140087296] [2020-08-18 16:50:55,309 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:50:55,310 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 16:50:55,310 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498620156] [2020-08-18 16:50:55,310 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 16:50:55,311 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:50:55,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 16:50:55,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 16:50:55,312 INFO L87 Difference]: Start difference. First operand 277 states and 320 transitions. Second operand 9 states. [2020-08-18 16:50:55,695 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:50:56,663 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:50:56,903 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:50:57,177 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:50:57,421 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:50:57,667 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:50:58,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:50:58,379 INFO L93 Difference]: Finished difference Result 380 states and 484 transitions. [2020-08-18 16:50:58,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-18 16:50:58,380 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 77 [2020-08-18 16:50:58,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:50:58,389 INFO L225 Difference]: With dead ends: 380 [2020-08-18 16:50:58,389 INFO L226 Difference]: Without dead ends: 377 [2020-08-18 16:50:58,390 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-18 16:50:58,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2020-08-18 16:50:58,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 277. [2020-08-18 16:50:58,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 277 states. [2020-08-18 16:50:58,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 319 transitions. [2020-08-18 16:50:58,463 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 319 transitions. Word has length 77 [2020-08-18 16:50:58,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:50:58,463 INFO L479 AbstractCegarLoop]: Abstraction has 277 states and 319 transitions. [2020-08-18 16:50:58,463 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 16:50:58,464 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 319 transitions. [2020-08-18 16:50:58,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-08-18 16:50:58,465 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:50:58,465 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:50:58,465 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 16:50:58,466 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:50:58,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:50:58,466 INFO L82 PathProgramCache]: Analyzing trace with hash 2125508241, now seen corresponding path program 1 times [2020-08-18 16:50:58,466 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:50:58,466 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1481155043] [2020-08-18 16:50:58,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:50:58,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:50:58,764 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:50:58,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:50:58,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:50:58,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:50:58,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:50:58,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:50:58,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:50:58,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:50:58,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:50:58,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:50:58,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:50:58,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 16:50:58,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:50:58,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 16:50:58,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:50:58,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:50:58,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:50:58,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:50:58,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:50:58,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:50:58,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:50:58,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-18 16:50:58,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:50:58,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-18 16:50:58,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:50:58,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:50:58,968 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1481155043] [2020-08-18 16:50:58,968 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:50:58,968 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 16:50:58,969 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53154345] [2020-08-18 16:50:58,970 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 16:50:58,971 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:50:58,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 16:50:58,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 16:50:58,976 INFO L87 Difference]: Start difference. First operand 277 states and 319 transitions. Second operand 9 states. [2020-08-18 16:50:59,737 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:50:59,981 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:51:00,215 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:51:00,439 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:51:01,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:51:01,207 INFO L93 Difference]: Finished difference Result 634 states and 793 transitions. [2020-08-18 16:51:01,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 16:51:01,208 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 78 [2020-08-18 16:51:01,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:51:01,212 INFO L225 Difference]: With dead ends: 634 [2020-08-18 16:51:01,212 INFO L226 Difference]: Without dead ends: 381 [2020-08-18 16:51:01,213 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-18 16:51:01,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2020-08-18 16:51:01,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 287. [2020-08-18 16:51:01,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2020-08-18 16:51:01,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 329 transitions. [2020-08-18 16:51:01,272 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 329 transitions. Word has length 78 [2020-08-18 16:51:01,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:51:01,273 INFO L479 AbstractCegarLoop]: Abstraction has 287 states and 329 transitions. [2020-08-18 16:51:01,273 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 16:51:01,273 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 329 transitions. [2020-08-18 16:51:01,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-08-18 16:51:01,274 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:51:01,275 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:51:01,275 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 16:51:01,275 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:51:01,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:51:01,275 INFO L82 PathProgramCache]: Analyzing trace with hash 1616035151, now seen corresponding path program 1 times [2020-08-18 16:51:01,276 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:51:01,276 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2000008641] [2020-08-18 16:51:01,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:51:01,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:51:01,552 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:51:01,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:51:01,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:51:01,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:51:01,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:51:01,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:51:01,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:51:01,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:51:01,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:51:01,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:51:01,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:51:01,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 16:51:01,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:51:01,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 16:51:01,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:51:01,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:51:01,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:51:01,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:51:01,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:51:01,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:51:01,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:51:01,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-18 16:51:01,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:51:01,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-18 16:51:01,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:51:01,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:51:01,677 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2000008641] [2020-08-18 16:51:01,677 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:51:01,677 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-18 16:51:01,677 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517363481] [2020-08-18 16:51:01,678 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 16:51:01,678 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:51:01,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 16:51:01,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-18 16:51:01,679 INFO L87 Difference]: Start difference. First operand 287 states and 329 transitions. Second operand 11 states. [2020-08-18 16:51:02,112 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:51:02,362 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:51:02,626 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:51:03,181 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:51:03,429 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:51:03,663 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:51:04,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:51:04,523 INFO L93 Difference]: Finished difference Result 658 states and 831 transitions. [2020-08-18 16:51:04,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 16:51:04,523 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 78 [2020-08-18 16:51:04,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:51:04,526 INFO L225 Difference]: With dead ends: 658 [2020-08-18 16:51:04,526 INFO L226 Difference]: Without dead ends: 395 [2020-08-18 16:51:04,527 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-18 16:51:04,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2020-08-18 16:51:04,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 295. [2020-08-18 16:51:04,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 295 states. [2020-08-18 16:51:04,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 337 transitions. [2020-08-18 16:51:04,583 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 337 transitions. Word has length 78 [2020-08-18 16:51:04,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:51:04,583 INFO L479 AbstractCegarLoop]: Abstraction has 295 states and 337 transitions. [2020-08-18 16:51:04,584 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 16:51:04,584 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 337 transitions. [2020-08-18 16:51:04,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-08-18 16:51:04,585 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:51:04,585 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:51:04,586 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 16:51:04,586 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:51:04,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:51:04,586 INFO L82 PathProgramCache]: Analyzing trace with hash -394068690, now seen corresponding path program 1 times [2020-08-18 16:51:04,586 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:51:04,587 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1354628105] [2020-08-18 16:51:04,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:51:04,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:51:04,843 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:51:04,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:51:04,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:51:04,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:51:04,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:51:04,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:51:04,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:51:04,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:51:04,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:51:04,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:51:04,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:51:04,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 16:51:04,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:51:04,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 16:51:04,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:51:04,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:51:04,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:51:04,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:51:04,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:51:04,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:51:04,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:51:04,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-18 16:51:04,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:51:04,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-18 16:51:04,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:51:04,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:51:04,951 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1354628105] [2020-08-18 16:51:04,951 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:51:04,951 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-18 16:51:04,951 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20312351] [2020-08-18 16:51:04,952 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 16:51:04,952 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:51:04,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 16:51:04,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-18 16:51:04,953 INFO L87 Difference]: Start difference. First operand 295 states and 337 transitions. Second operand 7 states. [2020-08-18 16:51:05,238 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:51:05,715 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:51:07,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:51:07,309 INFO L93 Difference]: Finished difference Result 941 states and 1221 transitions. [2020-08-18 16:51:07,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-18 16:51:07,310 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 78 [2020-08-18 16:51:07,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:51:07,319 INFO L225 Difference]: With dead ends: 941 [2020-08-18 16:51:07,319 INFO L226 Difference]: Without dead ends: 670 [2020-08-18 16:51:07,321 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 31 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-08-18 16:51:07,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2020-08-18 16:51:07,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 571. [2020-08-18 16:51:07,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 571 states. [2020-08-18 16:51:07,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 679 transitions. [2020-08-18 16:51:07,515 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 679 transitions. Word has length 78 [2020-08-18 16:51:07,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:51:07,515 INFO L479 AbstractCegarLoop]: Abstraction has 571 states and 679 transitions. [2020-08-18 16:51:07,515 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 16:51:07,516 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 679 transitions. [2020-08-18 16:51:07,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-08-18 16:51:07,520 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:51:07,521 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:51:07,521 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 16:51:07,521 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:51:07,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:51:07,522 INFO L82 PathProgramCache]: Analyzing trace with hash 823271752, now seen corresponding path program 1 times [2020-08-18 16:51:07,522 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:51:07,522 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1310316004] [2020-08-18 16:51:07,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:51:07,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 16:51:07,607 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 16:51:07,607 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 16:51:07,613 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 16:51:07,655 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 04:51:07 BoogieIcfgContainer [2020-08-18 16:51:07,656 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 16:51:07,658 INFO L168 Benchmark]: Toolchain (without parser) took 26720.77 ms. Allocated memory was 141.0 MB in the beginning and 619.2 MB in the end (delta: 478.2 MB). Free memory was 103.1 MB in the beginning and 291.1 MB in the end (delta: -188.0 MB). Peak memory consumption was 290.1 MB. Max. memory is 7.1 GB. [2020-08-18 16:51:07,659 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-18 16:51:07,660 INFO L168 Benchmark]: CACSL2BoogieTranslator took 673.95 ms. Allocated memory was 141.0 MB in the beginning and 203.4 MB in the end (delta: 62.4 MB). Free memory was 102.9 MB in the beginning and 168.9 MB in the end (delta: -66.0 MB). Peak memory consumption was 23.2 MB. Max. memory is 7.1 GB. [2020-08-18 16:51:07,660 INFO L168 Benchmark]: Boogie Preprocessor took 81.54 ms. Allocated memory is still 203.4 MB. Free memory was 168.9 MB in the beginning and 164.9 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. [2020-08-18 16:51:07,661 INFO L168 Benchmark]: RCFGBuilder took 1163.80 ms. Allocated memory was 203.4 MB in the beginning and 234.9 MB in the end (delta: 31.5 MB). Free memory was 164.9 MB in the beginning and 192.1 MB in the end (delta: -27.2 MB). Peak memory consumption was 78.3 MB. Max. memory is 7.1 GB. [2020-08-18 16:51:07,662 INFO L168 Benchmark]: TraceAbstraction took 24794.04 ms. Allocated memory was 234.9 MB in the beginning and 619.2 MB in the end (delta: 384.3 MB). Free memory was 190.7 MB in the beginning and 291.1 MB in the end (delta: -100.4 MB). Peak memory consumption was 283.9 MB. Max. memory is 7.1 GB. [2020-08-18 16:51:07,672 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 673.95 ms. Allocated memory was 141.0 MB in the beginning and 203.4 MB in the end (delta: 62.4 MB). Free memory was 102.9 MB in the beginning and 168.9 MB in the end (delta: -66.0 MB). Peak memory consumption was 23.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 81.54 ms. Allocated memory is still 203.4 MB. Free memory was 168.9 MB in the beginning and 164.9 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1163.80 ms. Allocated memory was 203.4 MB in the beginning and 234.9 MB in the end (delta: 31.5 MB). Free memory was 164.9 MB in the beginning and 192.1 MB in the end (delta: -27.2 MB). Peak memory consumption was 78.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 24794.04 ms. Allocated memory was 234.9 MB in the beginning and 619.2 MB in the end (delta: 384.3 MB). Free memory was 190.7 MB in the beginning and 291.1 MB in the end (delta: -100.4 MB). Peak memory consumption was 283.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 410]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L209] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L424] int pumpRunning = 0; [L425] int systemActive = 1; [L683] int cleanupTimeShifts = 4; [L806] int waterLevel = 1; [L807] int methaneLevelCritical = 0; [L756] int retValue_acc ; [L757] int tmp ; [L761] FCALL select_helpers() [L762] FCALL select_features() [L763] CALL, EXPR valid_product() [L674] int retValue_acc ; [L677] retValue_acc = 1 [L678] return (retValue_acc); [L763] RET, EXPR valid_product() [L763] tmp = valid_product() [L765] COND TRUE \read(tmp) [L767] FCALL setup() [L768] CALL runTest() [L750] CALL test() [L581] int splverifierCounter ; [L582] int tmp ; [L583] int tmp___0 ; [L584] int tmp___1 ; [L585] int tmp___2 ; [L588] splverifierCounter = 0 [L590] COND TRUE 1 [L592] COND TRUE splverifierCounter < 4 [L598] tmp = __VERIFIER_nondet_int() [L600] COND TRUE \read(tmp) [L602] CALL waterRise() [L824] COND TRUE waterLevel < 2 [L825] waterLevel = waterLevel + 1 [L602] RET waterRise() [L608] tmp___0 = __VERIFIER_nondet_int() [L610] COND TRUE \read(tmp___0) [L612] CALL changeMethaneLevel() [L836] COND FALSE !(\read(methaneLevelCritical)) [L839] methaneLevelCritical = 1 [L612] RET changeMethaneLevel() [L618] tmp___2 = __VERIFIER_nondet_int() [L620] COND TRUE \read(tmp___2) [L633] CALL timeShift() [L432] COND FALSE !(\read(pumpRunning)) [L439] COND TRUE \read(systemActive) [L441] CALL processEnvironment() [L461] int tmp ; [L464] COND TRUE ! pumpRunning [L466] CALL, EXPR isHighWaterLevel() [L558] int retValue_acc ; [L559] int tmp ; [L560] int tmp___0 ; [L564] CALL, EXPR isHighWaterSensorDry() [L886] int retValue_acc ; [L889] COND FALSE !(waterLevel < 2) [L893] retValue_acc = 0 [L894] return (retValue_acc); [L564] RET, EXPR isHighWaterSensorDry() [L564] tmp = isHighWaterSensorDry() [L566] COND FALSE !(\read(tmp)) [L569] tmp___0 = 1 [L571] retValue_acc = tmp___0 [L572] return (retValue_acc); [L466] RET, EXPR isHighWaterLevel() [L466] tmp = isHighWaterLevel() [L468] COND TRUE \read(tmp) [L470] CALL activatePump() [L489] pumpRunning = 1 [L470] RET activatePump() [L441] RET processEnvironment() [L447] CALL __utac_acc__Specification1_spec__1() [L780] int tmp ; [L781] int tmp___0 ; [L785] CALL, EXPR isMethaneLevelCritical() [L845] int retValue_acc ; [L848] retValue_acc = methaneLevelCritical [L849] return (retValue_acc); [L785] RET, EXPR isMethaneLevelCritical() [L785] tmp = isMethaneLevelCritical() [L787] COND TRUE \read(tmp) [L789] CALL, EXPR isPumpRunning() [L513] int retValue_acc ; [L516] retValue_acc = pumpRunning [L517] return (retValue_acc); [L789] RET, EXPR isPumpRunning() [L789] tmp___0 = isPumpRunning() [L791] COND TRUE \read(tmp___0) [L793] CALL __automaton_fail() [L410] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 37 procedures, 215 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 24.6s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 19.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 855 SDtfs, 1520 SDslu, 835 SDs, 0 SdLazy, 3965 SolverSat, 923 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 9.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 297 GetRequests, 202 SyntacticMatches, 3 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 9.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=571occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 9 MinimizatonAttempts, 574 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.4s InterpolantComputationTime, 669 NumberOfCodeBlocks, 669 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 578 ConstructedInterpolants, 0 QuantifiedInterpolants, 173318 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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...