/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.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product33.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 20:26:58,626 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 20:26:58,631 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 20:26:58,678 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 20:26:58,678 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 20:26:58,690 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 20:26:58,692 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 20:26:58,697 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 20:26:58,699 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 20:26:58,703 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 20:26:58,704 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 20:26:58,705 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 20:26:58,705 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 20:26:58,708 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 20:26:58,711 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 20:26:58,713 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 20:26:58,715 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 20:26:58,717 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 20:26:58,720 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 20:26:58,726 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 20:26:58,730 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 20:26:58,731 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 20:26:58,732 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 20:26:58,733 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 20:26:58,738 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-04 20:26:58,738 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-04 20:26:58,738 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-04 20:26:58,741 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-04 20:26:58,742 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-04 20:26:58,744 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-04 20:26:58,744 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-04 20:26:58,745 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-04 20:26:58,746 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-04 20:26:58,747 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-04 20:26:58,748 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-04 20:26:58,749 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-04 20:26:58,749 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-04 20:26:58,750 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-04 20:26:58,750 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 20:26:58,751 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 20:26:58,753 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 20:26:58,754 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-09-04 20:26:58,773 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 20:26:58,774 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 20:26:58,776 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 20:26:58,777 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 20:26:58,777 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 20:26:58,777 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 20:26:58,778 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 20:26:58,778 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 20:26:58,778 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 20:26:58,779 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 20:26:58,780 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 20:26:58,780 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 20:26:58,780 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 20:26:58,780 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 20:26:58,781 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 20:26:58,781 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 20:26:58,781 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 20:26:58,782 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 20:26:58,782 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 20:26:58,782 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 20:26:58,782 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 20:26:58,782 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 20:26:58,783 INFO L138 SettingsManager]: * Use separate solver for trace checks=false 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: Use separate solver for trace checks -> true [2020-09-04 20:26:59,202 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 20:26:59,226 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 20:26:59,230 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 20:26:59,233 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 20:26:59,233 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 20:26:59,234 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product33.cil.c [2020-09-04 20:26:59,327 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bd87542b7/875abd0255af4549b3b6152c0d535f4f/FLAGf395790ae [2020-09-04 20:26:59,908 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 20:26:59,909 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product33.cil.c [2020-09-04 20:26:59,924 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bd87542b7/875abd0255af4549b3b6152c0d535f4f/FLAGf395790ae [2020-09-04 20:27:00,195 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bd87542b7/875abd0255af4549b3b6152c0d535f4f [2020-09-04 20:27:00,208 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 20:27:00,210 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 20:27:00,211 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 20:27:00,211 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 20:27:00,215 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 20:27:00,217 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 08:27:00" (1/1) ... [2020-09-04 20:27:00,221 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22589b7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 08:27:00, skipping insertion in model container [2020-09-04 20:27:00,221 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 08:27:00" (1/1) ... [2020-09-04 20:27:00,230 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 20:27:00,290 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 20:27:00,629 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 20:27:00,646 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 20:27:00,891 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 20:27:00,928 INFO L208 MainTranslator]: Completed translation [2020-09-04 20:27:00,929 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 08:27:00 WrapperNode [2020-09-04 20:27:00,929 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 20:27:00,929 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 20:27:00,930 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 20:27:00,930 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 20:27:00,943 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 08:27:00" (1/1) ... [2020-09-04 20:27:00,944 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 08:27:00" (1/1) ... [2020-09-04 20:27:00,964 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 08:27:00" (1/1) ... [2020-09-04 20:27:00,964 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 08:27:00" (1/1) ... [2020-09-04 20:27:00,997 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 08:27:00" (1/1) ... [2020-09-04 20:27:01,008 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 08:27:00" (1/1) ... [2020-09-04 20:27:01,015 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 08:27:00" (1/1) ... [2020-09-04 20:27:01,032 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 20:27:01,033 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 20:27:01,033 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 20:27:01,034 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 20:27:01,037 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 08:27:00" (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 [2020-09-04 20:27:01,132 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 20:27:01,133 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 20:27:01,133 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-04 20:27:01,133 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-04 20:27:01,133 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-04 20:27:01,134 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-04 20:27:01,134 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-04 20:27:01,134 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-04 20:27:01,134 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-04 20:27:01,135 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-04 20:27:01,135 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-04 20:27:01,135 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-04 20:27:01,135 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-04 20:27:01,135 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-04 20:27:01,136 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-04 20:27:01,136 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-04 20:27:01,136 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-04 20:27:01,136 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-04 20:27:01,136 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-09-04 20:27:01,137 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-04 20:27:01,137 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-04 20:27:01,138 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-04 20:27:01,138 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-04 20:27:01,138 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-04 20:27:01,138 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-04 20:27:01,138 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-04 20:27:01,139 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-04 20:27:01,139 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-04 20:27:01,139 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 20:27:01,139 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-09-04 20:27:01,139 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-04 20:27:01,139 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-04 20:27:01,140 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-04 20:27:01,140 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-04 20:27:01,140 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-04 20:27:01,140 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-04 20:27:01,140 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-09-04 20:27:01,141 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 20:27:01,141 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 20:27:01,141 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-04 20:27:01,141 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-04 20:27:01,141 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-04 20:27:01,141 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-04 20:27:01,141 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-04 20:27:01,142 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-04 20:27:01,142 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-04 20:27:01,142 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-04 20:27:01,142 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-04 20:27:01,142 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-04 20:27:01,142 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 20:27:01,143 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-04 20:27:01,143 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-04 20:27:01,143 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-04 20:27:01,143 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-04 20:27:01,143 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-04 20:27:01,143 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-04 20:27:01,143 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-04 20:27:01,144 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-04 20:27:01,144 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-04 20:27:01,144 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-04 20:27:01,144 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-04 20:27:01,144 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-09-04 20:27:01,144 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-04 20:27:01,145 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-04 20:27:01,145 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-04 20:27:01,145 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-04 20:27:01,145 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-04 20:27:01,145 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-09-04 20:27:01,145 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-04 20:27:01,145 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-04 20:27:01,146 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-09-04 20:27:01,146 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-04 20:27:01,146 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-04 20:27:01,146 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-04 20:27:01,146 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-04 20:27:01,146 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-04 20:27:01,147 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-04 20:27:01,147 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-04 20:27:01,147 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-04 20:27:01,147 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-04 20:27:01,147 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-04 20:27:01,147 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-04 20:27:01,148 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-04 20:27:01,148 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 20:27:01,148 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-04 20:27:01,148 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 20:27:01,148 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-04 20:27:01,148 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 20:27:02,257 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 20:27:02,257 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-04 20:27:02,271 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 08:27:02 BoogieIcfgContainer [2020-09-04 20:27:02,272 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 20:27:02,273 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 20:27:02,273 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 20:27:02,277 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 20:27:02,278 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 08:27:00" (1/3) ... [2020-09-04 20:27:02,279 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3afddfcd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 08:27:02, skipping insertion in model container [2020-09-04 20:27:02,279 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 08:27:00" (2/3) ... [2020-09-04 20:27:02,279 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3afddfcd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 08:27:02, skipping insertion in model container [2020-09-04 20:27:02,280 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 08:27:02" (3/3) ... [2020-09-04 20:27:02,282 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product33.cil.c [2020-09-04 20:27:02,293 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 20:27:02,306 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 20:27:02,329 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 20:27:02,353 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 20:27:02,353 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 20:27:02,353 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-04 20:27:02,354 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 20:27:02,354 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 20:27:02,354 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 20:27:02,354 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 20:27:02,354 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 20:27:02,378 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states. [2020-09-04 20:27:02,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-09-04 20:27:02,401 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 20:27:02,403 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 20:27:02,404 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 20:27:02,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 20:27:02,411 INFO L82 PathProgramCache]: Analyzing trace with hash -955195086, now seen corresponding path program 1 times [2020-09-04 20:27:02,424 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 20:27:02,424 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1815701190] [2020-09-04 20:27:02,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 20:27:02,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:27:03,167 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 20:27:03,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 20:27:03,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:27:03,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 20:27:03,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:27:03,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 20:27:03,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:27:03,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 20:27:03,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:27:03,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 20:27:03,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:27:03,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-09-04 20:27:03,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:27:03,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-09-04 20:27:03,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:27:03,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 20:27:03,348 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1815701190] [2020-09-04 20:27:03,350 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 20:27:03,351 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 20:27:03,352 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896257398] [2020-09-04 20:27:03,358 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 20:27:03,359 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 20:27:03,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 20:27:03,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 20:27:03,380 INFO L87 Difference]: Start difference. First operand 284 states. Second operand 3 states. [2020-09-04 20:27:04,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 20:27:04,656 INFO L93 Difference]: Finished difference Result 419 states and 501 transitions. [2020-09-04 20:27:04,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 20:27:04,659 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 142 [2020-09-04 20:27:04,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 20:27:04,679 INFO L225 Difference]: With dead ends: 419 [2020-09-04 20:27:04,679 INFO L226 Difference]: Without dead ends: 266 [2020-09-04 20:27:04,685 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 20:27:04,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-09-04 20:27:04,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 227. [2020-09-04 20:27:04,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2020-09-04 20:27:04,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 245 transitions. [2020-09-04 20:27:04,818 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 245 transitions. Word has length 142 [2020-09-04 20:27:04,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 20:27:04,819 INFO L479 AbstractCegarLoop]: Abstraction has 227 states and 245 transitions. [2020-09-04 20:27:04,819 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 20:27:04,819 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 245 transitions. [2020-09-04 20:27:04,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-09-04 20:27:04,824 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 20:27:04,824 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 20:27:04,825 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 20:27:04,825 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 20:27:04,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 20:27:04,826 INFO L82 PathProgramCache]: Analyzing trace with hash -853880488, now seen corresponding path program 1 times [2020-09-04 20:27:04,826 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 20:27:04,826 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [562456685] [2020-09-04 20:27:04,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 20:27:04,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:27:05,208 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 20:27:05,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 20:27:05,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:27:05,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 20:27:05,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:27:05,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 20:27:05,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:27:05,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 20:27:05,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:27:05,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 20:27:05,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:27:05,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-09-04 20:27:05,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:27:05,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-09-04 20:27:05,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:27:05,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 20:27:05,334 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [562456685] [2020-09-04 20:27:05,334 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 20:27:05,334 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 20:27:05,334 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160711238] [2020-09-04 20:27:05,337 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 20:27:05,337 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 20:27:05,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 20:27:05,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 20:27:05,338 INFO L87 Difference]: Start difference. First operand 227 states and 245 transitions. Second operand 4 states. [2020-09-04 20:27:05,975 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 20:27:06,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 20:27:06,718 INFO L93 Difference]: Finished difference Result 336 states and 376 transitions. [2020-09-04 20:27:06,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-04 20:27:06,719 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 143 [2020-09-04 20:27:06,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 20:27:06,726 INFO L225 Difference]: With dead ends: 336 [2020-09-04 20:27:06,727 INFO L226 Difference]: Without dead ends: 249 [2020-09-04 20:27:06,731 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 [2020-09-04 20:27:06,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2020-09-04 20:27:06,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 217. [2020-09-04 20:27:06,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2020-09-04 20:27:06,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 232 transitions. [2020-09-04 20:27:06,811 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 232 transitions. Word has length 143 [2020-09-04 20:27:06,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 20:27:06,812 INFO L479 AbstractCegarLoop]: Abstraction has 217 states and 232 transitions. [2020-09-04 20:27:06,812 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 20:27:06,812 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 232 transitions. [2020-09-04 20:27:06,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-09-04 20:27:06,814 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 20:27:06,815 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 20:27:06,815 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 20:27:06,815 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 20:27:06,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 20:27:06,816 INFO L82 PathProgramCache]: Analyzing trace with hash -2102825874, now seen corresponding path program 1 times [2020-09-04 20:27:06,816 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 20:27:06,816 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [698351833] [2020-09-04 20:27:06,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 20:27:06,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:27:07,284 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 20:27:07,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 20:27:07,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:27:07,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 20:27:07,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:27:07,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 20:27:07,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:27:07,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 20:27:07,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:27:07,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 20:27:07,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:27:07,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-09-04 20:27:07,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:27:07,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-09-04 20:27:07,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:27:07,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 20:27:07,451 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [698351833] [2020-09-04 20:27:07,451 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 20:27:07,451 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-04 20:27:07,452 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356090452] [2020-09-04 20:27:07,452 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-04 20:27:07,453 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 20:27:07,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-04 20:27:07,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-04 20:27:07,453 INFO L87 Difference]: Start difference. First operand 217 states and 232 transitions. Second operand 9 states. [2020-09-04 20:27:07,934 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 20:27:08,343 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 20:27:08,617 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-04 20:27:08,924 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 20:27:09,219 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 20:27:09,528 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 20:27:10,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 20:27:10,756 INFO L93 Difference]: Finished difference Result 356 states and 401 transitions. [2020-09-04 20:27:10,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-04 20:27:10,756 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 152 [2020-09-04 20:27:10,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 20:27:10,763 INFO L225 Difference]: With dead ends: 356 [2020-09-04 20:27:10,763 INFO L226 Difference]: Without dead ends: 249 [2020-09-04 20:27:10,768 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2020-09-04 20:27:10,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2020-09-04 20:27:10,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 217. [2020-09-04 20:27:10,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2020-09-04 20:27:10,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 231 transitions. [2020-09-04 20:27:10,888 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 231 transitions. Word has length 152 [2020-09-04 20:27:10,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 20:27:10,888 INFO L479 AbstractCegarLoop]: Abstraction has 217 states and 231 transitions. [2020-09-04 20:27:10,888 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-04 20:27:10,889 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 231 transitions. [2020-09-04 20:27:10,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-09-04 20:27:10,891 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 20:27:10,891 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 20:27:10,891 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 20:27:10,892 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 20:27:10,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 20:27:10,892 INFO L82 PathProgramCache]: Analyzing trace with hash -1355593621, now seen corresponding path program 1 times [2020-09-04 20:27:10,892 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 20:27:10,893 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [806116365] [2020-09-04 20:27:10,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 20:27:10,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:27:11,240 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 20:27:11,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 20:27:11,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:27:11,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 20:27:11,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:27:11,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 20:27:11,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:27:11,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 20:27:11,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:27:11,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 20:27:11,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:27:11,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-09-04 20:27:11,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:27:11,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 20:27:11,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:27:11,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-09-04 20:27:11,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:27:11,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2020-09-04 20:27:11,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:27:11,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 20:27:11,437 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [806116365] [2020-09-04 20:27:11,437 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 20:27:11,437 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-04 20:27:11,438 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849015374] [2020-09-04 20:27:11,439 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-04 20:27:11,439 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 20:27:11,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-04 20:27:11,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-04 20:27:11,440 INFO L87 Difference]: Start difference. First operand 217 states and 231 transitions. Second operand 6 states. [2020-09-04 20:27:11,976 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 20:27:13,389 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 20:27:13,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 20:27:13,897 INFO L93 Difference]: Finished difference Result 478 states and 544 transitions. [2020-09-04 20:27:13,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-04 20:27:13,898 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 160 [2020-09-04 20:27:13,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 20:27:13,902 INFO L225 Difference]: With dead ends: 478 [2020-09-04 20:27:13,902 INFO L226 Difference]: Without dead ends: 371 [2020-09-04 20:27:13,903 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-09-04 20:27:13,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2020-09-04 20:27:14,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 312. [2020-09-04 20:27:14,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 312 states. [2020-09-04 20:27:14,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 336 transitions. [2020-09-04 20:27:14,008 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 336 transitions. Word has length 160 [2020-09-04 20:27:14,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 20:27:14,008 INFO L479 AbstractCegarLoop]: Abstraction has 312 states and 336 transitions. [2020-09-04 20:27:14,008 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-04 20:27:14,009 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 336 transitions. [2020-09-04 20:27:14,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-09-04 20:27:14,011 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 20:27:14,011 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 20:27:14,011 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-04 20:27:14,012 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 20:27:14,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 20:27:14,012 INFO L82 PathProgramCache]: Analyzing trace with hash 2011013837, now seen corresponding path program 1 times [2020-09-04 20:27:14,012 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 20:27:14,013 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1186735022] [2020-09-04 20:27:14,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 20:27:14,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:27:14,378 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 20:27:14,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 20:27:14,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:27:14,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 20:27:14,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:27:14,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 20:27:14,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:27:14,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 20:27:14,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:27:14,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 20:27:14,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:27:14,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-09-04 20:27:14,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:27:14,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 20:27:14,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:27:14,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 20:27:14,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:27:14,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-04 20:27:14,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:27:14,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2020-09-04 20:27:14,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:27:14,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2020-09-04 20:27:14,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:27:14,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 20:27:14,637 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1186735022] [2020-09-04 20:27:14,637 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 20:27:14,638 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-09-04 20:27:14,638 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498767622] [2020-09-04 20:27:14,639 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-04 20:27:14,639 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 20:27:14,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-04 20:27:14,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-09-04 20:27:14,640 INFO L87 Difference]: Start difference. First operand 312 states and 336 transitions. Second operand 12 states. [2020-09-04 20:27:15,441 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 20:27:15,792 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-04 20:27:16,063 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 20:27:16,330 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 20:27:16,587 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 20:27:17,497 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 20:27:17,835 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 20:27:18,148 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 20:27:18,468 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 20:27:18,749 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 20:27:19,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 20:27:19,793 INFO L93 Difference]: Finished difference Result 578 states and 658 transitions. [2020-09-04 20:27:19,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-04 20:27:19,795 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 184 [2020-09-04 20:27:19,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 20:27:19,798 INFO L225 Difference]: With dead ends: 578 [2020-09-04 20:27:19,798 INFO L226 Difference]: Without dead ends: 376 [2020-09-04 20:27:19,799 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=82, Invalid=380, Unknown=0, NotChecked=0, Total=462 [2020-09-04 20:27:19,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2020-09-04 20:27:19,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 318. [2020-09-04 20:27:19,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 318 states. [2020-09-04 20:27:19,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 342 transitions. [2020-09-04 20:27:19,891 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 342 transitions. Word has length 184 [2020-09-04 20:27:19,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 20:27:19,891 INFO L479 AbstractCegarLoop]: Abstraction has 318 states and 342 transitions. [2020-09-04 20:27:19,892 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-04 20:27:19,892 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 342 transitions. [2020-09-04 20:27:19,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-09-04 20:27:19,894 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 20:27:19,894 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 20:27:19,895 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-04 20:27:19,895 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 20:27:19,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 20:27:19,895 INFO L82 PathProgramCache]: Analyzing trace with hash 394324589, now seen corresponding path program 1 times [2020-09-04 20:27:19,896 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 20:27:19,896 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [925608128] [2020-09-04 20:27:19,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 20:27:19,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:27:20,294 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 20:27:20,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 20:27:20,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:27:20,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 20:27:20,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:27:20,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 20:27:20,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:27:20,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 20:27:20,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:27:20,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 20:27:20,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:27:20,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-09-04 20:27:20,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:27:20,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 20:27:20,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:27:20,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 20:27:20,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:27:20,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-04 20:27:20,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:27:20,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2020-09-04 20:27:20,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:27:20,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2020-09-04 20:27:20,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:27:20,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 20:27:20,521 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [925608128] [2020-09-04 20:27:20,523 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 20:27:20,523 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-04 20:27:20,523 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255518200] [2020-09-04 20:27:20,524 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-04 20:27:20,524 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 20:27:20,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-04 20:27:20,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-04 20:27:20,526 INFO L87 Difference]: Start difference. First operand 318 states and 342 transitions. Second operand 9 states. [2020-09-04 20:27:21,056 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 20:27:22,588 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 20:27:22,891 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 20:27:23,202 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 20:27:23,501 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 20:27:23,802 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 20:27:24,131 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 20:27:24,427 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 20:27:24,835 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 20:27:25,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 20:27:25,700 INFO L93 Difference]: Finished difference Result 788 states and 910 transitions. [2020-09-04 20:27:25,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-04 20:27:25,702 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 184 [2020-09-04 20:27:25,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 20:27:25,706 INFO L225 Difference]: With dead ends: 788 [2020-09-04 20:27:25,706 INFO L226 Difference]: Without dead ends: 580 [2020-09-04 20:27:25,708 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2020-09-04 20:27:25,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2020-09-04 20:27:25,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 489. [2020-09-04 20:27:25,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 489 states. [2020-09-04 20:27:25,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 532 transitions. [2020-09-04 20:27:25,859 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 532 transitions. Word has length 184 [2020-09-04 20:27:25,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 20:27:25,859 INFO L479 AbstractCegarLoop]: Abstraction has 489 states and 532 transitions. [2020-09-04 20:27:25,860 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-04 20:27:25,860 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 532 transitions. [2020-09-04 20:27:25,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-09-04 20:27:25,862 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 20:27:25,863 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 20:27:25,863 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-04 20:27:25,863 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 20:27:25,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 20:27:25,864 INFO L82 PathProgramCache]: Analyzing trace with hash 682865486, now seen corresponding path program 1 times [2020-09-04 20:27:25,864 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 20:27:25,864 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1667858576] [2020-09-04 20:27:25,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 20:27:25,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:27:26,274 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 20:27:26,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 20:27:26,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:27:26,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 20:27:26,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:27:26,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 20:27:26,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:27:26,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 20:27:26,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:27:26,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 20:27:26,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:27:26,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-09-04 20:27:26,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:27:26,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-09-04 20:27:26,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:27:26,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 20:27:26,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:27:26,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 20:27:26,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:27:26,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-04 20:27:26,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:27:26,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-09-04 20:27:26,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:27:26,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-09-04 20:27:26,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:27:26,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 20:27:26,483 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1667858576] [2020-09-04 20:27:26,484 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 20:27:26,484 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-04 20:27:26,484 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314904279] [2020-09-04 20:27:26,485 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-04 20:27:26,485 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 20:27:26,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-04 20:27:26,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-09-04 20:27:26,486 INFO L87 Difference]: Start difference. First operand 489 states and 532 transitions. Second operand 10 states. [2020-09-04 20:27:27,044 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 20:27:28,613 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 20:27:28,882 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 20:27:29,182 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 20:27:29,462 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 20:27:29,785 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 20:27:30,119 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 20:27:30,430 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 20:27:30,735 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 20:27:31,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 20:27:31,525 INFO L93 Difference]: Finished difference Result 646 states and 750 transitions. [2020-09-04 20:27:31,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-04 20:27:31,528 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 189 [2020-09-04 20:27:31,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 20:27:31,533 INFO L225 Difference]: With dead ends: 646 [2020-09-04 20:27:31,535 INFO L226 Difference]: Without dead ends: 643 [2020-09-04 20:27:31,536 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2020-09-04 20:27:31,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2020-09-04 20:27:31,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 489. [2020-09-04 20:27:31,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 489 states. [2020-09-04 20:27:31,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 531 transitions. [2020-09-04 20:27:31,741 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 531 transitions. Word has length 189 [2020-09-04 20:27:31,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 20:27:31,742 INFO L479 AbstractCegarLoop]: Abstraction has 489 states and 531 transitions. [2020-09-04 20:27:31,742 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-04 20:27:31,742 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 531 transitions. [2020-09-04 20:27:31,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-09-04 20:27:31,744 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 20:27:31,745 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 20:27:31,745 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-04 20:27:31,745 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 20:27:31,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 20:27:31,746 INFO L82 PathProgramCache]: Analyzing trace with hash 888496141, now seen corresponding path program 1 times [2020-09-04 20:27:31,746 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 20:27:31,746 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1901613963] [2020-09-04 20:27:31,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 20:27:31,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:27:32,052 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 20:27:32,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 20:27:32,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:27:32,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 20:27:32,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:27:32,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 20:27:32,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:27:32,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 20:27:32,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:27:32,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 20:27:32,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:27:32,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-09-04 20:27:32,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:27:32,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-09-04 20:27:32,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:27:32,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 20:27:32,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:27:32,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 20:27:32,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:27:32,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-04 20:27:32,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:27:32,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2020-09-04 20:27:32,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:27:32,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-09-04 20:27:32,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:27:32,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 20:27:32,243 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1901613963] [2020-09-04 20:27:32,243 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 20:27:32,243 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-04 20:27:32,244 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313534732] [2020-09-04 20:27:32,244 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-04 20:27:32,244 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 20:27:32,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-04 20:27:32,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-09-04 20:27:32,245 INFO L87 Difference]: Start difference. First operand 489 states and 531 transitions. Second operand 10 states. [2020-09-04 20:27:33,559 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 20:27:33,877 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-04 20:27:34,207 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-09-04 20:27:34,518 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 20:27:34,834 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 20:27:35,108 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 20:27:36,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 20:27:36,162 INFO L93 Difference]: Finished difference Result 1032 states and 1191 transitions. [2020-09-04 20:27:36,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-04 20:27:36,163 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 190 [2020-09-04 20:27:36,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 20:27:36,167 INFO L225 Difference]: With dead ends: 1032 [2020-09-04 20:27:36,167 INFO L226 Difference]: Without dead ends: 653 [2020-09-04 20:27:36,169 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2020-09-04 20:27:36,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 653 states. [2020-09-04 20:27:36,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 653 to 505. [2020-09-04 20:27:36,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 505 states. [2020-09-04 20:27:36,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 505 states to 505 states and 547 transitions. [2020-09-04 20:27:36,353 INFO L78 Accepts]: Start accepts. Automaton has 505 states and 547 transitions. Word has length 190 [2020-09-04 20:27:36,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 20:27:36,354 INFO L479 AbstractCegarLoop]: Abstraction has 505 states and 547 transitions. [2020-09-04 20:27:36,354 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-04 20:27:36,354 INFO L276 IsEmpty]: Start isEmpty. Operand 505 states and 547 transitions. [2020-09-04 20:27:36,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-09-04 20:27:36,357 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 20:27:36,357 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 20:27:36,358 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-04 20:27:36,358 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 20:27:36,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 20:27:36,358 INFO L82 PathProgramCache]: Analyzing trace with hash -325395952, now seen corresponding path program 1 times [2020-09-04 20:27:36,358 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 20:27:36,359 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [786242824] [2020-09-04 20:27:36,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 20:27:36,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:27:36,741 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 20:27:36,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 20:27:36,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:27:36,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 20:27:36,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:27:36,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 20:27:36,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:27:36,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 20:27:36,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:27:36,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 20:27:36,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:27:36,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-09-04 20:27:36,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:27:36,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-09-04 20:27:36,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:27:36,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 20:27:36,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:27:36,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 20:27:36,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:27:36,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-04 20:27:36,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:27:36,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2020-09-04 20:27:36,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:27:36,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-09-04 20:27:36,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:27:37,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 20:27:37,027 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [786242824] [2020-09-04 20:27:37,027 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 20:27:37,028 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-04 20:27:37,028 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783319816] [2020-09-04 20:27:37,029 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-04 20:27:37,029 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 20:27:37,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-04 20:27:37,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-04 20:27:37,030 INFO L87 Difference]: Start difference. First operand 505 states and 547 transitions. Second operand 7 states. [2020-09-04 20:27:37,653 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 20:27:38,242 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 20:27:40,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 20:27:40,476 INFO L93 Difference]: Finished difference Result 1471 states and 1751 transitions. [2020-09-04 20:27:40,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-04 20:27:40,477 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 190 [2020-09-04 20:27:40,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 20:27:40,485 INFO L225 Difference]: With dead ends: 1471 [2020-09-04 20:27:40,485 INFO L226 Difference]: Without dead ends: 1076 [2020-09-04 20:27:40,487 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 33 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2020-09-04 20:27:40,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1076 states. [2020-09-04 20:27:40,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1076 to 903. [2020-09-04 20:27:40,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 903 states. [2020-09-04 20:27:40,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 903 states to 903 states and 1011 transitions. [2020-09-04 20:27:40,811 INFO L78 Accepts]: Start accepts. Automaton has 903 states and 1011 transitions. Word has length 190 [2020-09-04 20:27:40,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 20:27:40,812 INFO L479 AbstractCegarLoop]: Abstraction has 903 states and 1011 transitions. [2020-09-04 20:27:40,812 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-04 20:27:40,812 INFO L276 IsEmpty]: Start isEmpty. Operand 903 states and 1011 transitions. [2020-09-04 20:27:40,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2020-09-04 20:27:40,815 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 20:27:40,815 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 20:27:40,815 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-04 20:27:40,815 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 20:27:40,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 20:27:40,816 INFO L82 PathProgramCache]: Analyzing trace with hash -527704718, now seen corresponding path program 1 times [2020-09-04 20:27:40,816 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 20:27:40,816 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2015243043] [2020-09-04 20:27:40,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 20:27:40,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 20:27:40,888 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 20:27:40,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 20:27:40,963 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 20:27:41,158 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-04 20:27:41,158 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 20:27:41,159 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-04 20:27:41,429 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 08:27:41 BoogieIcfgContainer [2020-09-04 20:27:41,429 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 20:27:41,432 INFO L168 Benchmark]: Toolchain (without parser) took 41222.21 ms. Allocated memory was 140.0 MB in the beginning and 770.2 MB in the end (delta: 630.2 MB). Free memory was 101.9 MB in the beginning and 420.2 MB in the end (delta: -318.3 MB). Peak memory consumption was 311.9 MB. Max. memory is 7.1 GB. [2020-09-04 20:27:41,433 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 140.0 MB. Free memory was 121.3 MB in the beginning and 121.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-04 20:27:41,434 INFO L168 Benchmark]: CACSL2BoogieTranslator took 718.10 ms. Allocated memory was 140.0 MB in the beginning and 205.0 MB in the end (delta: 65.0 MB). Free memory was 101.7 MB in the beginning and 174.9 MB in the end (delta: -73.2 MB). Peak memory consumption was 29.2 MB. Max. memory is 7.1 GB. [2020-09-04 20:27:41,434 INFO L168 Benchmark]: Boogie Preprocessor took 103.29 ms. Allocated memory is still 205.0 MB. Free memory was 174.9 MB in the beginning and 171.0 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. [2020-09-04 20:27:41,435 INFO L168 Benchmark]: RCFGBuilder took 1238.65 ms. Allocated memory was 205.0 MB in the beginning and 237.5 MB in the end (delta: 32.5 MB). Free memory was 170.3 MB in the beginning and 181.2 MB in the end (delta: -10.9 MB). Peak memory consumption was 83.2 MB. Max. memory is 7.1 GB. [2020-09-04 20:27:41,436 INFO L168 Benchmark]: TraceAbstraction took 39156.48 ms. Allocated memory was 237.5 MB in the beginning and 770.2 MB in the end (delta: 532.7 MB). Free memory was 179.8 MB in the beginning and 420.2 MB in the end (delta: -240.4 MB). Peak memory consumption was 292.2 MB. Max. memory is 7.1 GB. [2020-09-04 20:27:41,439 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 140.0 MB. Free memory was 121.3 MB in the beginning and 121.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 718.10 ms. Allocated memory was 140.0 MB in the beginning and 205.0 MB in the end (delta: 65.0 MB). Free memory was 101.7 MB in the beginning and 174.9 MB in the end (delta: -73.2 MB). Peak memory consumption was 29.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 103.29 ms. Allocated memory is still 205.0 MB. Free memory was 174.9 MB in the beginning and 171.0 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1238.65 ms. Allocated memory was 205.0 MB in the beginning and 237.5 MB in the end (delta: 32.5 MB). Free memory was 170.3 MB in the beginning and 181.2 MB in the end (delta: -10.9 MB). Peak memory consumption was 83.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 39156.48 ms. Allocated memory was 237.5 MB in the beginning and 770.2 MB in the end (delta: 532.7 MB). Free memory was 179.8 MB in the beginning and 420.2 MB in the end (delta: -240.4 MB). Peak memory consumption was 292.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 410]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L209] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; VAL [\old(cleanupTimeShifts)=171, \old(head)=176, \old(head)=162, \old(methaneLevelCritical)=146, \old(pumpRunning)=137, \old(systemActive)=136, \old(waterLevel)=139, cleanupTimeShifts=171, head={0:0}, methaneLevelCritical=146, pumpRunning=137, systemActive=136, waterLevel=139] [L424] int pumpRunning = 0; VAL [\old(cleanupTimeShifts)=171, \old(head)=162, \old(head)=176, \old(methaneLevelCritical)=146, \old(pumpRunning)=137, \old(systemActive)=136, \old(waterLevel)=139, cleanupTimeShifts=171, head={0:0}, methaneLevelCritical=146, pumpRunning=0, systemActive=136, waterLevel=139] [L425] int systemActive = 1; VAL [\old(cleanupTimeShifts)=171, \old(head)=162, \old(head)=176, \old(methaneLevelCritical)=146, \old(pumpRunning)=137, \old(systemActive)=136, \old(waterLevel)=139, cleanupTimeShifts=171, head={0:0}, methaneLevelCritical=146, pumpRunning=0, systemActive=1, waterLevel=139] [L683] int cleanupTimeShifts = 4; VAL [\old(cleanupTimeShifts)=171, \old(head)=176, \old(head)=162, \old(methaneLevelCritical)=146, \old(pumpRunning)=137, \old(systemActive)=136, \old(waterLevel)=139, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=146, pumpRunning=0, systemActive=1, waterLevel=139] [L806] int waterLevel = 1; VAL [\old(cleanupTimeShifts)=171, \old(head)=176, \old(head)=162, \old(methaneLevelCritical)=146, \old(pumpRunning)=137, \old(systemActive)=136, \old(waterLevel)=139, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=146, pumpRunning=0, systemActive=1, waterLevel=1] [L807] int methaneLevelCritical = 0; VAL [\old(cleanupTimeShifts)=171, \old(head)=176, \old(head)=162, \old(methaneLevelCritical)=146, \old(pumpRunning)=137, \old(systemActive)=136, \old(waterLevel)=139, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L756] int retValue_acc ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L757] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L761] FCALL select_helpers() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L762] FCALL select_features() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L763] CALL, EXPR valid_product() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L674] int retValue_acc ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L677] retValue_acc = 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=1, systemActive=1, waterLevel=1] [L678] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=1, systemActive=1, waterLevel=1] [L763] RET, EXPR valid_product() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, valid_product()=1, waterLevel=1] [L763] tmp = valid_product() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=1, valid_product()=1, waterLevel=1] [L765] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=1, waterLevel=1] [L767] FCALL setup() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=1, waterLevel=1] [L768] CALL runTest() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L750] CALL test() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L581] int splverifierCounter ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L582] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L583] int tmp___0 ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L584] int tmp___1 ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L585] int tmp___2 ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L588] splverifierCounter = 0 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L590] COND TRUE 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L592] COND TRUE splverifierCounter < 4 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L598] tmp = __VERIFIER_nondet_int() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, __VERIFIER_nondet_int()=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=1] [L600] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=1] [L602] CALL waterRise() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L824] COND TRUE waterLevel < 2 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L825] waterLevel = waterLevel + 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L602] RET waterRise() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=2] [L608] tmp___0 = __VERIFIER_nondet_int() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, __VERIFIER_nondet_int()=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=1, waterLevel=2] [L610] COND TRUE \read(tmp___0) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=1, waterLevel=2] [L612] CALL changeMethaneLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L836] COND FALSE !(\read(methaneLevelCritical)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L839] methaneLevelCritical = 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L612] RET changeMethaneLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=1, waterLevel=2] [L618] tmp___2 = __VERIFIER_nondet_int() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, __VERIFIER_nondet_int()=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=1, tmp___2=1, waterLevel=2] [L620] COND TRUE \read(tmp___2) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=1, tmp___2=1, waterLevel=2] [L633] CALL timeShift() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L432] COND FALSE !(\read(pumpRunning)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L439] COND TRUE \read(systemActive) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L441] CALL processEnvironment() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L461] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L464] COND TRUE ! pumpRunning VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L466] CALL, EXPR isHighWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L558] int retValue_acc ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L559] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L560] int tmp___0 ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L564] CALL, EXPR isHighWaterSensorDry() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L886] int retValue_acc ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L889] COND FALSE !(waterLevel < 2) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L893] retValue_acc = 0 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, retValue_acc=0, systemActive=1, waterLevel=2] [L894] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, retValue_acc=0, systemActive=1, waterLevel=2] [L564] RET, EXPR isHighWaterSensorDry() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isHighWaterSensorDry()=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L564] tmp = isHighWaterSensorDry() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isHighWaterSensorDry()=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, tmp=0, waterLevel=2] [L566] COND FALSE !(\read(tmp)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, tmp=0, waterLevel=2] [L569] tmp___0 = 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, tmp=0, tmp___0=1, waterLevel=2] [L571] retValue_acc = tmp___0 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, retValue_acc=1, systemActive=1, tmp=0, tmp___0=1, waterLevel=2] [L572] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, retValue_acc=1, systemActive=1, tmp=0, tmp___0=1, waterLevel=2] [L466] RET, EXPR isHighWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isHighWaterLevel()=1, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L466] tmp = isHighWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isHighWaterLevel()=1, methaneLevelCritical=1, pumpRunning=0, systemActive=1, tmp=1, waterLevel=2] [L468] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, tmp=1, waterLevel=2] [L470] CALL activatePump() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L489] pumpRunning = 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L470] RET activatePump() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, waterLevel=2] [L441] RET processEnvironment() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L447] CALL __utac_acc__Specification1_spec__1() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L780] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L781] int tmp___0 ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L785] CALL, EXPR isMethaneLevelCritical() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L845] int retValue_acc ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L848] retValue_acc = methaneLevelCritical VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=2] [L849] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=2] [L785] RET, EXPR isMethaneLevelCritical() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L785] tmp = isMethaneLevelCritical() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, waterLevel=2] [L787] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, waterLevel=2] [L789] CALL, EXPR isPumpRunning() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L513] int retValue_acc ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L516] retValue_acc = pumpRunning VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=2] [L517] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=2] [L789] RET, EXPR isPumpRunning() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isPumpRunning()=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, waterLevel=2] [L789] tmp___0 = isPumpRunning() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isPumpRunning()=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, tmp___0=1, waterLevel=2] [L791] COND TRUE \read(tmp___0) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, tmp___0=1, waterLevel=2] [L793] CALL __automaton_fail() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L410] __VERIFIER_error() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 37 procedures, 606 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 38.8s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 31.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1934 SDtfs, 3181 SDslu, 3624 SDs, 0 SdLazy, 6424 SolverSat, 881 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 13.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 325 GetRequests, 211 SyntacticMatches, 3 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 213 ImplicationChecksByTransitivity, 15.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=903occurred 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: 1.3s AutomataMinimizationTime, 9 MinimizatonAttempts, 786 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 4.5s InterpolantComputationTime, 1729 NumberOfCodeBlocks, 1729 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 1525 ConstructedInterpolants, 0 QuantifiedInterpolants, 659139 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...