/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_product38.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 11:54:20,634 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 11:54:20,636 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 11:54:20,660 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 11:54:20,660 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 11:54:20,661 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 11:54:20,663 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 11:54:20,665 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 11:54:20,666 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 11:54:20,667 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 11:54:20,668 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 11:54:20,669 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 11:54:20,669 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 11:54:20,670 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 11:54:20,671 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 11:54:20,673 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 11:54:20,673 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 11:54:20,674 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 11:54:20,676 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 11:54:20,678 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 11:54:20,679 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 11:54:20,680 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 11:54:20,681 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 11:54:20,682 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 11:54:20,684 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 11:54:20,685 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 11:54:20,685 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 11:54:20,686 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 11:54:20,686 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 11:54:20,687 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 11:54:20,687 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 11:54:20,688 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 11:54:20,689 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 11:54:20,690 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 11:54:20,691 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 11:54:20,691 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 11:54:20,691 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 11:54:20,692 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 11:54:20,692 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 11:54:20,693 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 11:54:20,694 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 11:54:20,695 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 11:54:20,722 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 11:54:20,722 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 11:54:20,723 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 11:54:20,724 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 11:54:20,724 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 11:54:20,724 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 11:54:20,724 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 11:54:20,725 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 11:54:20,725 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 11:54:20,725 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 11:54:20,725 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 11:54:20,726 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 11:54:20,726 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 11:54:20,726 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 11:54:20,726 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 11:54:20,726 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 11:54:20,727 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 11:54:20,727 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 11:54:20,727 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 11:54:20,727 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 11:54:20,728 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 11:54:20,728 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 11:54:20,728 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 11:54:20,728 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 11:54:20,728 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 11:54:20,729 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 11:54:20,729 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 11:54:20,729 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 11:54:20,729 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 11:54:20,729 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 11:54:21,039 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 11:54:21,051 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 11:54:21,054 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 11:54:21,056 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 11:54:21,056 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 11:54:21,057 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product38.cil.c [2020-08-18 11:54:21,124 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4dfcb0b02/7c5b629041cd4f20aa985dbc4464be60/FLAGbef1b87dc [2020-08-18 11:54:21,670 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 11:54:21,671 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product38.cil.c [2020-08-18 11:54:21,691 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4dfcb0b02/7c5b629041cd4f20aa985dbc4464be60/FLAGbef1b87dc [2020-08-18 11:54:21,928 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4dfcb0b02/7c5b629041cd4f20aa985dbc4464be60 [2020-08-18 11:54:21,938 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 11:54:21,940 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 11:54:21,941 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 11:54:21,942 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 11:54:21,946 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 11:54:21,947 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 11:54:21" (1/1) ... [2020-08-18 11:54:21,950 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f3ebb61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:54:21, skipping insertion in model container [2020-08-18 11:54:21,950 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 11:54:21" (1/1) ... [2020-08-18 11:54:21,958 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 11:54:22,014 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 11:54:22,394 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 11:54:22,406 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 11:54:22,488 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 11:54:22,525 INFO L208 MainTranslator]: Completed translation [2020-08-18 11:54:22,525 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:54:22 WrapperNode [2020-08-18 11:54:22,526 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 11:54:22,526 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 11:54:22,526 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 11:54:22,527 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 11:54:22,540 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:54:22" (1/1) ... [2020-08-18 11:54:22,541 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:54:22" (1/1) ... [2020-08-18 11:54:22,564 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:54:22" (1/1) ... [2020-08-18 11:54:22,564 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:54:22" (1/1) ... [2020-08-18 11:54:22,605 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:54:22" (1/1) ... [2020-08-18 11:54:22,614 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:54:22" (1/1) ... [2020-08-18 11:54:22,619 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:54:22" (1/1) ... [2020-08-18 11:54:22,626 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 11:54:22,627 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 11:54:22,627 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 11:54:22,627 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 11:54:22,628 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:54:22" (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 11:54:22,688 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 11:54:22,688 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 11:54:22,689 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 11:54:22,689 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 11:54:22,689 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 11:54:22,689 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 11:54:22,689 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 11:54:22,689 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 11:54:22,690 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 11:54:22,690 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 11:54:22,690 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 11:54:22,690 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 11:54:22,690 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-08-18 11:54:22,690 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 11:54:22,690 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 11:54:22,691 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 11:54:22,691 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 11:54:22,691 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 11:54:22,691 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 11:54:22,691 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 11:54:22,691 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 11:54:22,692 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 11:54:22,692 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 11:54:22,692 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 11:54:22,692 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 11:54:22,692 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 11:54:22,692 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 11:54:22,693 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 11:54:22,693 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 11:54:22,693 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-18 11:54:22,693 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 11:54:22,693 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 11:54:22,693 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 11:54:22,694 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 11:54:22,694 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 11:54:22,694 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 11:54:22,694 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 11:54:22,694 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 11:54:22,694 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 11:54:22,695 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 11:54:22,695 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 11:54:22,695 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 11:54:22,695 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 11:54:22,695 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 11:54:22,695 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 11:54:22,695 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 11:54:22,696 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 11:54:22,696 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 11:54:22,696 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 11:54:22,696 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 11:54:22,696 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 11:54:22,696 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 11:54:22,696 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 11:54:22,697 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 11:54:22,697 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 11:54:22,697 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 11:54:22,697 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 11:54:22,697 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 11:54:22,698 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 11:54:22,698 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-08-18 11:54:22,698 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 11:54:22,698 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 11:54:22,698 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 11:54:22,698 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 11:54:22,699 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 11:54:22,699 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 11:54:22,699 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 11:54:22,699 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 11:54:22,699 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 11:54:22,699 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 11:54:22,700 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 11:54:22,700 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 11:54:22,700 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 11:54:22,700 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 11:54:22,700 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 11:54:22,700 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 11:54:22,700 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 11:54:22,701 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 11:54:22,701 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 11:54:22,701 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 11:54:22,701 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 11:54:22,701 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 11:54:22,701 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-18 11:54:22,701 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 11:54:22,702 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 11:54:22,702 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 11:54:22,702 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 11:54:22,702 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 11:54:22,702 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 11:54:22,702 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 11:54:22,703 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 11:54:22,703 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 11:54:23,906 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 11:54:23,906 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 11:54:23,914 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 11:54:23 BoogieIcfgContainer [2020-08-18 11:54:23,914 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 11:54:23,917 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 11:54:23,917 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 11:54:23,920 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 11:54:23,920 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 11:54:21" (1/3) ... [2020-08-18 11:54:23,921 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@713b6fe8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 11:54:23, skipping insertion in model container [2020-08-18 11:54:23,921 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:54:22" (2/3) ... [2020-08-18 11:54:23,922 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@713b6fe8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 11:54:23, skipping insertion in model container [2020-08-18 11:54:23,922 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 11:54:23" (3/3) ... [2020-08-18 11:54:23,924 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product38.cil.c [2020-08-18 11:54:23,934 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 11:54:23,943 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 11:54:23,957 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 11:54:23,993 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 11:54:23,994 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 11:54:23,994 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 11:54:23,994 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 11:54:23,995 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 11:54:23,995 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 11:54:23,995 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 11:54:23,995 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 11:54:24,024 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states. [2020-08-18 11:54:24,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-18 11:54:24,034 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:54:24,035 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 11:54:24,036 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:54:24,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:54:24,041 INFO L82 PathProgramCache]: Analyzing trace with hash 1406508770, now seen corresponding path program 1 times [2020-08-18 11:54:24,050 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:54:24,050 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1734796295] [2020-08-18 11:54:24,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:54:24,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:24,714 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 11:54:24,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:54:24,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:24,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:54:24,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:24,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 11:54:24,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:24,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:54:24,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:24,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:54:24,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:24,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 11:54:24,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:24,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 11:54:24,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:24,836 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 11:54:24,837 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1734796295] [2020-08-18 11:54:24,843 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:54:24,843 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 11:54:24,844 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844573030] [2020-08-18 11:54:24,852 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 11:54:24,852 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:54:24,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 11:54:24,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 11:54:24,876 INFO L87 Difference]: Start difference. First operand 170 states. Second operand 3 states. [2020-08-18 11:54:26,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:54:26,060 INFO L93 Difference]: Finished difference Result 296 states and 388 transitions. [2020-08-18 11:54:26,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 11:54:26,062 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-18 11:54:26,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:54:26,077 INFO L225 Difference]: With dead ends: 296 [2020-08-18 11:54:26,078 INFO L226 Difference]: Without dead ends: 160 [2020-08-18 11:54:26,082 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 11:54:26,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-08-18 11:54:26,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 127. [2020-08-18 11:54:26,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-08-18 11:54:26,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 149 transitions. [2020-08-18 11:54:26,178 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 149 transitions. Word has length 46 [2020-08-18 11:54:26,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:54:26,179 INFO L479 AbstractCegarLoop]: Abstraction has 127 states and 149 transitions. [2020-08-18 11:54:26,179 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 11:54:26,179 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 149 transitions. [2020-08-18 11:54:26,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-18 11:54:26,188 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:54:26,188 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 11:54:26,189 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 11:54:26,189 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:54:26,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:54:26,189 INFO L82 PathProgramCache]: Analyzing trace with hash 297997714, now seen corresponding path program 1 times [2020-08-18 11:54:26,190 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:54:26,190 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1250038637] [2020-08-18 11:54:26,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:54:26,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:26,583 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 11:54:26,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:54:26,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:26,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:54:26,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:26,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 11:54:26,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:26,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:54:26,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:26,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:54:26,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:26,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 11:54:26,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:26,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 11:54:26,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:26,631 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 11:54:26,632 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1250038637] [2020-08-18 11:54:26,632 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:54:26,633 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 11:54:26,633 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291673492] [2020-08-18 11:54:26,635 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 11:54:26,635 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:54:26,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 11:54:26,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 11:54:26,636 INFO L87 Difference]: Start difference. First operand 127 states and 149 transitions. Second operand 4 states. [2020-08-18 11:54:27,050 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 11:54:27,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:54:27,979 INFO L93 Difference]: Finished difference Result 225 states and 275 transitions. [2020-08-18 11:54:27,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 11:54:27,980 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-18 11:54:27,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:54:27,983 INFO L225 Difference]: With dead ends: 225 [2020-08-18 11:54:27,983 INFO L226 Difference]: Without dead ends: 144 [2020-08-18 11:54:27,985 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-18 11:54:27,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-08-18 11:54:28,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 118. [2020-08-18 11:54:28,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-08-18 11:54:28,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 137 transitions. [2020-08-18 11:54:28,025 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 137 transitions. Word has length 47 [2020-08-18 11:54:28,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:54:28,026 INFO L479 AbstractCegarLoop]: Abstraction has 118 states and 137 transitions. [2020-08-18 11:54:28,026 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 11:54:28,026 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 137 transitions. [2020-08-18 11:54:28,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-18 11:54:28,028 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:54:28,029 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 11:54:28,029 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 11:54:28,029 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:54:28,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:54:28,030 INFO L82 PathProgramCache]: Analyzing trace with hash -1416539958, now seen corresponding path program 1 times [2020-08-18 11:54:28,030 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:54:28,030 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [349575749] [2020-08-18 11:54:28,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:54:28,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:28,402 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 11:54:28,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:54:28,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:28,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:54:28,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:28,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 11:54:28,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:28,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:54:28,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:28,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:54:28,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:28,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 11:54:28,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:28,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 11:54:28,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:28,486 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 11:54:28,487 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [349575749] [2020-08-18 11:54:28,487 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:54:28,487 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 11:54:28,488 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514336907] [2020-08-18 11:54:28,488 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 11:54:28,489 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:54:28,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 11:54:28,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 11:54:28,489 INFO L87 Difference]: Start difference. First operand 118 states and 137 transitions. Second operand 8 states. [2020-08-18 11:54:28,877 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 11:54:29,180 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 11:54:29,438 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 11:54:29,704 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 11:54:30,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:54:30,906 INFO L93 Difference]: Finished difference Result 238 states and 293 transitions. [2020-08-18 11:54:30,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 11:54:30,908 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2020-08-18 11:54:30,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:54:30,910 INFO L225 Difference]: With dead ends: 238 [2020-08-18 11:54:30,910 INFO L226 Difference]: Without dead ends: 144 [2020-08-18 11:54:30,911 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 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 11:54:30,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-08-18 11:54:30,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 118. [2020-08-18 11:54:30,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-08-18 11:54:30,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 136 transitions. [2020-08-18 11:54:30,953 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 136 transitions. Word has length 52 [2020-08-18 11:54:30,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:54:30,954 INFO L479 AbstractCegarLoop]: Abstraction has 118 states and 136 transitions. [2020-08-18 11:54:30,954 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 11:54:30,954 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 136 transitions. [2020-08-18 11:54:30,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-08-18 11:54:30,957 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:54:30,957 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] [2020-08-18 11:54:30,957 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 11:54:30,957 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:54:30,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:54:30,958 INFO L82 PathProgramCache]: Analyzing trace with hash -819223945, now seen corresponding path program 1 times [2020-08-18 11:54:30,958 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:54:30,958 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1195373409] [2020-08-18 11:54:30,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:54:30,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:31,236 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 11:54:31,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:54:31,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:31,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:54:31,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:31,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 11:54:31,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:31,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:54:31,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:31,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:54:31,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:31,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 11:54:31,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:31,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:54:31,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:31,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:54:31,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:31,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-18 11:54:31,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:31,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-08-18 11:54:31,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:31,346 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 11:54:31,347 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1195373409] [2020-08-18 11:54:31,347 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:54:31,347 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 11:54:31,347 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384197018] [2020-08-18 11:54:31,348 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 11:54:31,348 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:54:31,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 11:54:31,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-18 11:54:31,350 INFO L87 Difference]: Start difference. First operand 118 states and 136 transitions. Second operand 6 states. [2020-08-18 11:54:31,681 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 11:54:32,850 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 11:54:33,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:54:33,527 INFO L93 Difference]: Finished difference Result 335 states and 415 transitions. [2020-08-18 11:54:33,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 11:54:33,528 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 65 [2020-08-18 11:54:33,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:54:33,531 INFO L225 Difference]: With dead ends: 335 [2020-08-18 11:54:33,531 INFO L226 Difference]: Without dead ends: 241 [2020-08-18 11:54:33,532 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-08-18 11:54:33,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2020-08-18 11:54:33,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 198. [2020-08-18 11:54:33,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2020-08-18 11:54:33,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 225 transitions. [2020-08-18 11:54:33,599 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 225 transitions. Word has length 65 [2020-08-18 11:54:33,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:54:33,600 INFO L479 AbstractCegarLoop]: Abstraction has 198 states and 225 transitions. [2020-08-18 11:54:33,600 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 11:54:33,600 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 225 transitions. [2020-08-18 11:54:33,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-08-18 11:54:33,602 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:54:33,602 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] [2020-08-18 11:54:33,603 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 11:54:33,603 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:54:33,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:54:33,603 INFO L82 PathProgramCache]: Analyzing trace with hash -1180966768, now seen corresponding path program 1 times [2020-08-18 11:54:33,603 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:54:33,604 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1944131327] [2020-08-18 11:54:33,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:54:33,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:33,909 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 11:54:33,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:54:33,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:33,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:54:33,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:33,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 11:54:33,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:33,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:54:33,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:33,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:54:33,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:33,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 11:54:33,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:33,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:54:33,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:33,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:54:33,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:33,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:54:33,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:33,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 11:54:34,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:34,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-18 11:54:34,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:34,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-18 11:54:34,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:34,037 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 11:54:34,037 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1944131327] [2020-08-18 11:54:34,038 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:54:34,038 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 11:54:34,038 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108181307] [2020-08-18 11:54:34,040 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 11:54:34,040 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:54:34,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 11:54:34,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 11:54:34,041 INFO L87 Difference]: Start difference. First operand 198 states and 225 transitions. Second operand 8 states. [2020-08-18 11:54:34,392 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 11:54:35,576 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 11:54:35,846 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 11:54:36,069 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 11:54:36,295 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 11:54:36,581 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 11:54:37,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:54:37,571 INFO L93 Difference]: Finished difference Result 592 states and 731 transitions. [2020-08-18 11:54:37,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 11:54:37,576 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 79 [2020-08-18 11:54:37,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:54:37,580 INFO L225 Difference]: With dead ends: 592 [2020-08-18 11:54:37,581 INFO L226 Difference]: Without dead ends: 418 [2020-08-18 11:54:37,582 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 26 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 11:54:37,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2020-08-18 11:54:37,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 351. [2020-08-18 11:54:37,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 351 states. [2020-08-18 11:54:37,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 400 transitions. [2020-08-18 11:54:37,662 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 400 transitions. Word has length 79 [2020-08-18 11:54:37,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:54:37,663 INFO L479 AbstractCegarLoop]: Abstraction has 351 states and 400 transitions. [2020-08-18 11:54:37,663 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 11:54:37,663 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 400 transitions. [2020-08-18 11:54:37,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-18 11:54:37,665 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:54:37,665 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 11:54:37,666 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 11:54:37,666 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:54:37,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:54:37,666 INFO L82 PathProgramCache]: Analyzing trace with hash 1165038356, now seen corresponding path program 1 times [2020-08-18 11:54:37,667 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:54:37,667 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [658803864] [2020-08-18 11:54:37,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:54:37,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:38,020 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 11:54:38,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:54:38,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:38,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:54:38,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:38,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 11:54:38,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:38,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:54:38,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:38,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:54:38,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:38,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 11:54:38,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:38,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 11:54:38,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:38,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:54:38,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:38,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:54:38,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:38,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:54:38,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:38,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 11:54:38,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:38,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-18 11:54:38,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:38,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-18 11:54:38,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:38,136 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 11:54:38,137 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [658803864] [2020-08-18 11:54:38,137 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:54:38,137 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 11:54:38,137 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503058224] [2020-08-18 11:54:38,138 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 11:54:38,138 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:54:38,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 11:54:38,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 11:54:38,139 INFO L87 Difference]: Start difference. First operand 351 states and 400 transitions. Second operand 9 states. [2020-08-18 11:54:38,511 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 11:54:39,537 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 11:54:39,771 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 11:54:40,032 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 11:54:40,278 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 11:54:40,501 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 11:54:41,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:54:41,513 INFO L93 Difference]: Finished difference Result 460 states and 580 transitions. [2020-08-18 11:54:41,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-18 11:54:41,514 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 83 [2020-08-18 11:54:41,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:54:41,518 INFO L225 Difference]: With dead ends: 460 [2020-08-18 11:54:41,519 INFO L226 Difference]: Without dead ends: 457 [2020-08-18 11:54:41,519 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 32 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 11:54:41,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states. [2020-08-18 11:54:41,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 351. [2020-08-18 11:54:41,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 351 states. [2020-08-18 11:54:41,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 399 transitions. [2020-08-18 11:54:41,588 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 399 transitions. Word has length 83 [2020-08-18 11:54:41,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:54:41,589 INFO L479 AbstractCegarLoop]: Abstraction has 351 states and 399 transitions. [2020-08-18 11:54:41,589 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 11:54:41,589 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 399 transitions. [2020-08-18 11:54:41,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-18 11:54:41,591 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:54:41,591 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 11:54:41,591 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 11:54:41,591 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:54:41,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:54:41,592 INFO L82 PathProgramCache]: Analyzing trace with hash 1066260182, now seen corresponding path program 1 times [2020-08-18 11:54:41,592 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:54:41,592 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [396699930] [2020-08-18 11:54:41,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:54:41,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:41,827 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 11:54:41,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:54:41,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:41,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:54:41,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:41,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 11:54:41,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:41,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:54:41,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:41,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:54:41,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:41,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 11:54:41,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:41,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 11:54:41,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:41,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:54:41,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:41,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:54:41,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:41,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:54:41,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:41,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 11:54:41,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:41,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-18 11:54:41,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:41,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-18 11:54:41,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:41,968 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 11:54:41,969 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [396699930] [2020-08-18 11:54:41,969 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:54:41,969 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 11:54:41,969 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711076479] [2020-08-18 11:54:41,970 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 11:54:41,971 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:54:41,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 11:54:41,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 11:54:41,980 INFO L87 Difference]: Start difference. First operand 351 states and 399 transitions. Second operand 9 states. [2020-08-18 11:54:42,816 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 11:54:43,052 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 11:54:43,299 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 11:54:43,524 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 11:54:44,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:54:44,459 INFO L93 Difference]: Finished difference Result 788 states and 970 transitions. [2020-08-18 11:54:44,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 11:54:44,460 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 84 [2020-08-18 11:54:44,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:54:44,463 INFO L225 Difference]: With dead ends: 788 [2020-08-18 11:54:44,463 INFO L226 Difference]: Without dead ends: 461 [2020-08-18 11:54:44,465 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 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 11:54:44,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2020-08-18 11:54:44,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 361. [2020-08-18 11:54:44,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 361 states. [2020-08-18 11:54:44,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 409 transitions. [2020-08-18 11:54:44,528 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 409 transitions. Word has length 84 [2020-08-18 11:54:44,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:54:44,529 INFO L479 AbstractCegarLoop]: Abstraction has 361 states and 409 transitions. [2020-08-18 11:54:44,529 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 11:54:44,529 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 409 transitions. [2020-08-18 11:54:44,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-18 11:54:44,531 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:54:44,531 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 11:54:44,531 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 11:54:44,532 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:54:44,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:54:44,532 INFO L82 PathProgramCache]: Analyzing trace with hash 1088892436, now seen corresponding path program 1 times [2020-08-18 11:54:44,532 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:54:44,532 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [497473879] [2020-08-18 11:54:44,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:54:44,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:44,785 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 11:54:44,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:54:44,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:44,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:54:44,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:44,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 11:54:44,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:44,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:54:44,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:44,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:54:44,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:44,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 11:54:44,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:44,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 11:54:44,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:44,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:54:44,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:44,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:54:44,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:44,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:54:44,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:44,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 11:54:44,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:44,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-18 11:54:44,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:44,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-18 11:54:44,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:44,899 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 11:54:44,900 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [497473879] [2020-08-18 11:54:44,900 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:54:44,900 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-18 11:54:44,901 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571722852] [2020-08-18 11:54:44,901 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 11:54:44,902 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:54:44,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 11:54:44,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-18 11:54:44,902 INFO L87 Difference]: Start difference. First operand 361 states and 409 transitions. Second operand 11 states. [2020-08-18 11:54:45,373 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 11:54:45,615 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 11:54:45,857 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 11:54:46,461 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 11:54:46,694 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 11:54:46,920 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 11:54:48,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:54:48,021 INFO L93 Difference]: Finished difference Result 812 states and 1010 transitions. [2020-08-18 11:54:48,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 11:54:48,021 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 84 [2020-08-18 11:54:48,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:54:48,026 INFO L225 Difference]: With dead ends: 812 [2020-08-18 11:54:48,026 INFO L226 Difference]: Without dead ends: 475 [2020-08-18 11:54:48,028 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-18 11:54:48,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475 states. [2020-08-18 11:54:48,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475 to 369. [2020-08-18 11:54:48,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 369 states. [2020-08-18 11:54:48,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 417 transitions. [2020-08-18 11:54:48,106 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 417 transitions. Word has length 84 [2020-08-18 11:54:48,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:54:48,107 INFO L479 AbstractCegarLoop]: Abstraction has 369 states and 417 transitions. [2020-08-18 11:54:48,107 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 11:54:48,107 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 417 transitions. [2020-08-18 11:54:48,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-18 11:54:48,109 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:54:48,109 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 11:54:48,109 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 11:54:48,109 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:54:48,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:54:48,109 INFO L82 PathProgramCache]: Analyzing trace with hash 2114384435, now seen corresponding path program 1 times [2020-08-18 11:54:48,110 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:54:48,110 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1681394069] [2020-08-18 11:54:48,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:54:48,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:48,363 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 11:54:48,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:54:48,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:48,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:54:48,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:48,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 11:54:48,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:48,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:54:48,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:48,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:54:48,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:48,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 11:54:48,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:48,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 11:54:48,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:48,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:54:48,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:48,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:54:48,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:48,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:54:48,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:48,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 11:54:48,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:48,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-18 11:54:48,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:48,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-18 11:54:48,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:48,488 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 11:54:48,488 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1681394069] [2020-08-18 11:54:48,489 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:54:48,489 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-18 11:54:48,489 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436271314] [2020-08-18 11:54:48,489 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 11:54:48,490 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:54:48,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 11:54:48,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-18 11:54:48,490 INFO L87 Difference]: Start difference. First operand 369 states and 417 transitions. Second operand 7 states. [2020-08-18 11:54:48,803 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 11:54:49,305 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 11:54:51,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:54:51,150 INFO L93 Difference]: Finished difference Result 1154 states and 1484 transitions. [2020-08-18 11:54:51,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 11:54:51,151 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 84 [2020-08-18 11:54:51,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:54:51,157 INFO L225 Difference]: With dead ends: 1154 [2020-08-18 11:54:51,157 INFO L226 Difference]: Without dead ends: 809 [2020-08-18 11:54:51,159 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 33 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-08-18 11:54:51,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 809 states. [2020-08-18 11:54:51,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 809 to 689. [2020-08-18 11:54:51,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 689 states. [2020-08-18 11:54:51,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 689 states to 689 states and 811 transitions. [2020-08-18 11:54:51,336 INFO L78 Accepts]: Start accepts. Automaton has 689 states and 811 transitions. Word has length 84 [2020-08-18 11:54:51,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:54:51,339 INFO L479 AbstractCegarLoop]: Abstraction has 689 states and 811 transitions. [2020-08-18 11:54:51,340 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 11:54:51,340 INFO L276 IsEmpty]: Start isEmpty. Operand 689 states and 811 transitions. [2020-08-18 11:54:51,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-18 11:54:51,346 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:54:51,347 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 11:54:51,347 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 11:54:51,347 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:54:51,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:54:51,348 INFO L82 PathProgramCache]: Analyzing trace with hash 166319437, now seen corresponding path program 1 times [2020-08-18 11:54:51,348 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:54:51,349 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [487662471] [2020-08-18 11:54:51,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:54:51,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 11:54:51,438 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 11:54:51,439 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 11:54:51,445 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 11:54:51,493 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 11:54:51 BoogieIcfgContainer [2020-08-18 11:54:51,493 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 11:54:51,499 INFO L168 Benchmark]: Toolchain (without parser) took 29555.62 ms. Allocated memory was 138.4 MB in the beginning and 667.4 MB in the end (delta: 529.0 MB). Free memory was 100.7 MB in the beginning and 577.4 MB in the end (delta: -476.7 MB). Peak memory consumption was 52.3 MB. Max. memory is 7.1 GB. [2020-08-18 11:54:51,500 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 138.4 MB. Free memory was 120.0 MB in the beginning and 119.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-18 11:54:51,506 INFO L168 Benchmark]: CACSL2BoogieTranslator took 584.61 ms. Allocated memory was 138.4 MB in the beginning and 201.3 MB in the end (delta: 62.9 MB). Free memory was 100.4 MB in the beginning and 169.0 MB in the end (delta: -68.5 MB). Peak memory consumption was 24.8 MB. Max. memory is 7.1 GB. [2020-08-18 11:54:51,512 INFO L168 Benchmark]: Boogie Preprocessor took 100.29 ms. Allocated memory is still 201.3 MB. Free memory was 169.0 MB in the beginning and 164.8 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. [2020-08-18 11:54:51,513 INFO L168 Benchmark]: RCFGBuilder took 1287.16 ms. Allocated memory was 201.3 MB in the beginning and 232.3 MB in the end (delta: 30.9 MB). Free memory was 164.1 MB in the beginning and 194.4 MB in the end (delta: -30.3 MB). Peak memory consumption was 84.8 MB. Max. memory is 7.1 GB. [2020-08-18 11:54:51,514 INFO L168 Benchmark]: TraceAbstraction took 27576.44 ms. Allocated memory was 232.3 MB in the beginning and 667.4 MB in the end (delta: 435.2 MB). Free memory was 194.4 MB in the beginning and 577.4 MB in the end (delta: -383.0 MB). Peak memory consumption was 52.1 MB. Max. memory is 7.1 GB. [2020-08-18 11:54:51,519 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 138.4 MB. Free memory was 120.0 MB in the beginning and 119.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 584.61 ms. Allocated memory was 138.4 MB in the beginning and 201.3 MB in the end (delta: 62.9 MB). Free memory was 100.4 MB in the beginning and 169.0 MB in the end (delta: -68.5 MB). Peak memory consumption was 24.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 100.29 ms. Allocated memory is still 201.3 MB. Free memory was 169.0 MB in the beginning and 164.8 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1287.16 ms. Allocated memory was 201.3 MB in the beginning and 232.3 MB in the end (delta: 30.9 MB). Free memory was 164.1 MB in the beginning and 194.4 MB in the end (delta: -30.3 MB). Peak memory consumption was 84.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 27576.44 ms. Allocated memory was 232.3 MB in the beginning and 667.4 MB in the end (delta: 435.2 MB). Free memory was 194.4 MB in the beginning and 577.4 MB in the end (delta: -383.0 MB). Peak memory consumption was 52.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 837]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L40] int cleanupTimeShifts = 4; [L377] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L580] int pumpRunning = 0; [L581] int systemActive = 1; [L843] int waterLevel = 1; [L844] int methaneLevelCritical = 0; [L121] int retValue_acc ; [L122] int tmp ; [L126] FCALL select_helpers() [L127] FCALL select_features() [L128] CALL, EXPR valid_product() [L170] int retValue_acc ; [L173] retValue_acc = 1 [L174] return (retValue_acc); [L128] RET, EXPR valid_product() [L128] tmp = valid_product() [L130] COND TRUE \read(tmp) [L132] FCALL setup() [L133] CALL runTest() [L112] CALL test() [L767] int splverifierCounter ; [L768] int tmp ; [L769] int tmp___0 ; [L770] int tmp___1 ; [L771] int tmp___2 ; [L774] splverifierCounter = 0 [L776] COND TRUE 1 [L778] COND TRUE splverifierCounter < 4 [L784] tmp = __VERIFIER_nondet_int() [L786] COND TRUE \read(tmp) [L788] CALL waterRise() [L861] COND TRUE waterLevel < 2 [L862] waterLevel = waterLevel + 1 [L788] RET waterRise() [L794] tmp___0 = __VERIFIER_nondet_int() [L796] COND TRUE \read(tmp___0) [L798] CALL changeMethaneLevel() [L873] COND FALSE !(\read(methaneLevelCritical)) [L876] methaneLevelCritical = 1 [L798] RET changeMethaneLevel() [L804] tmp___2 = __VERIFIER_nondet_int() [L806] COND FALSE !(\read(tmp___2)) [L812] tmp___1 = __VERIFIER_nondet_int() [L814] COND TRUE \read(tmp___1) [L821] CALL timeShift() [L587] COND FALSE !(\read(pumpRunning)) [L594] COND TRUE \read(systemActive) [L596] CALL processEnvironment() [L642] int tmp ; [L645] COND FALSE !(\read(pumpRunning)) [L660] CALL processEnvironment__wrappee__highWaterSensor() [L616] int tmp ; [L619] COND TRUE ! pumpRunning [L621] CALL, EXPR isHighWaterLevel() [L739] int retValue_acc ; [L740] int tmp ; [L741] int tmp___0 ; [L745] CALL, EXPR isHighWaterSensorDry() [L923] int retValue_acc ; [L926] COND FALSE !(waterLevel < 2) [L930] retValue_acc = 0 [L931] return (retValue_acc); [L745] RET, EXPR isHighWaterSensorDry() [L745] tmp = isHighWaterSensorDry() [L747] COND FALSE !(\read(tmp)) [L750] tmp___0 = 1 [L752] retValue_acc = tmp___0 [L753] return (retValue_acc); [L621] RET, EXPR isHighWaterLevel() [L621] tmp = isHighWaterLevel() [L623] COND TRUE \read(tmp) [L625] CALL activatePump() [L670] pumpRunning = 1 [L625] RET activatePump() [L660] RET processEnvironment__wrappee__highWaterSensor() [L596] RET processEnvironment() [L602] CALL __utac_acc__Specification1_spec__1() [L183] int tmp ; [L184] int tmp___0 ; [L188] CALL, EXPR isMethaneLevelCritical() [L882] int retValue_acc ; [L885] retValue_acc = methaneLevelCritical [L886] return (retValue_acc); [L188] RET, EXPR isMethaneLevelCritical() [L188] tmp = isMethaneLevelCritical() [L190] COND TRUE \read(tmp) [L192] CALL, EXPR isPumpRunning() [L694] int retValue_acc ; [L697] retValue_acc = pumpRunning [L698] return (retValue_acc); [L192] RET, EXPR isPumpRunning() [L192] tmp___0 = isPumpRunning() [L194] COND TRUE \read(tmp___0) [L196] CALL __automaton_fail() [L837] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 229 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 27.4s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 22.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1050 SDtfs, 1883 SDslu, 987 SDs, 0 SdLazy, 4938 SolverSat, 1284 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 12.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 320 GetRequests, 222 SyntacticMatches, 4 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 9.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=689occurred 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, 627 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.4s InterpolantComputationTime, 712 NumberOfCodeBlocks, 712 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 615 ConstructedInterpolants, 0 QuantifiedInterpolants, 190312 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...