/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product20.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 05:49:53,714 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 05:49:53,716 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 05:49:53,748 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 05:49:53,749 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 05:49:53,758 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 05:49:53,759 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 05:49:53,762 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 05:49:53,763 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 05:49:53,764 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 05:49:53,767 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 05:49:53,769 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 05:49:53,769 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 05:49:53,773 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 05:49:53,775 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 05:49:53,777 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 05:49:53,778 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 05:49:53,781 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 05:49:53,783 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 05:49:53,789 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 05:49:53,793 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 05:49:53,794 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 05:49:53,795 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 05:49:53,795 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 05:49:53,806 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 05:49:53,806 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 05:49:53,806 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 05:49:53,809 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 05:49:53,810 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 05:49:53,811 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 05:49:53,811 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 05:49:53,811 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 05:49:53,812 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 05:49:53,813 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 05:49:53,814 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 05:49:53,816 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 05:49:53,816 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 05:49:53,817 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 05:49:53,817 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 05:49:53,818 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 05:49:53,819 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 05:49:53,820 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-19 05:49:53,857 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 05:49:53,857 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 05:49:53,858 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 05:49:53,859 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 05:49:53,859 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 05:49:53,859 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 05:49:53,859 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 05:49:53,859 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 05:49:53,860 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 05:49:53,860 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 05:49:53,860 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 05:49:53,860 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 05:49:53,860 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 05:49:53,861 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 05:49:53,861 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 05:49:53,861 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 05:49:53,861 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 05:49:53,861 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 05:49:53,862 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 05:49:53,862 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 05:49:53,862 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 05:49:53,862 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 05:49:53,862 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 05:49:53,862 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 05:49:53,863 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 05:49:53,863 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 05:49:53,863 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 05:49:53,863 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 05:49:53,863 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 05:49:53,864 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4; [2020-08-19 05:49:54,185 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 05:49:54,198 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 05:49:54,202 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 05:49:54,203 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 05:49:54,204 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 05:49:54,204 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product20.cil.c [2020-08-19 05:49:54,280 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3162e9366/851be2190129475aac79354df659a52b/FLAGbc369688d [2020-08-19 05:49:54,832 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 05:49:54,833 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product20.cil.c [2020-08-19 05:49:54,846 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3162e9366/851be2190129475aac79354df659a52b/FLAGbc369688d [2020-08-19 05:49:55,127 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3162e9366/851be2190129475aac79354df659a52b [2020-08-19 05:49:55,134 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 05:49:55,136 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 05:49:55,137 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 05:49:55,137 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 05:49:55,141 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 05:49:55,142 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 05:49:55" (1/1) ... [2020-08-19 05:49:55,145 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6fec8256 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:49:55, skipping insertion in model container [2020-08-19 05:49:55,145 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 05:49:55" (1/1) ... [2020-08-19 05:49:55,154 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 05:49:55,213 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 05:49:55,625 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 05:49:55,647 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 05:49:55,750 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 05:49:55,782 INFO L208 MainTranslator]: Completed translation [2020-08-19 05:49:55,783 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:49:55 WrapperNode [2020-08-19 05:49:55,783 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 05:49:55,784 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 05:49:55,784 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 05:49:55,784 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 05:49:55,795 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:49:55" (1/1) ... [2020-08-19 05:49:55,795 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:49:55" (1/1) ... [2020-08-19 05:49:55,815 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:49:55" (1/1) ... [2020-08-19 05:49:55,815 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:49:55" (1/1) ... [2020-08-19 05:49:55,846 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:49:55" (1/1) ... [2020-08-19 05:49:55,856 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:49:55" (1/1) ... [2020-08-19 05:49:55,862 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:49:55" (1/1) ... [2020-08-19 05:49:55,869 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 05:49:55,870 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 05:49:55,870 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 05:49:55,870 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 05:49:55,871 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:49:55" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 05:49:55,940 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 05:49:55,941 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 05:49:55,941 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-19 05:49:55,941 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-19 05:49:55,941 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-19 05:49:55,941 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-19 05:49:55,942 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-19 05:49:55,942 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-19 05:49:55,942 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-19 05:49:55,942 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-19 05:49:55,942 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-19 05:49:55,942 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-19 05:49:55,943 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-19 05:49:55,943 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-19 05:49:55,943 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-19 05:49:55,943 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-19 05:49:55,943 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-19 05:49:55,943 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 05:49:55,944 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-19 05:49:55,944 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-19 05:49:55,944 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-19 05:49:55,944 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-19 05:49:55,944 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-19 05:49:55,945 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-19 05:49:55,945 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-19 05:49:55,945 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-19 05:49:55,945 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-19 05:49:55,945 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-19 05:49:55,945 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-19 05:49:55,945 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-19 05:49:55,946 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-19 05:49:55,946 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-19 05:49:55,946 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-19 05:49:55,946 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-19 05:49:55,946 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-19 05:49:55,946 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-19 05:49:55,947 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-19 05:49:55,947 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-19 05:49:55,947 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-19 05:49:55,947 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 05:49:55,947 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 05:49:55,948 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-19 05:49:55,948 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-19 05:49:55,948 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-19 05:49:55,948 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-19 05:49:55,948 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-19 05:49:55,948 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-19 05:49:55,948 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 05:49:55,949 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 05:49:55,949 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-19 05:49:55,949 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 05:49:55,949 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 05:49:55,949 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 05:49:55,949 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 05:49:55,950 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-19 05:49:55,950 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 05:49:55,950 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-19 05:49:55,950 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-19 05:49:55,950 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 05:49:55,950 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-19 05:49:55,951 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-19 05:49:55,951 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 05:49:55,951 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-19 05:49:55,951 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-19 05:49:55,951 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-19 05:49:55,951 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-19 05:49:55,951 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-19 05:49:55,952 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-19 05:49:55,952 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-19 05:49:55,952 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-19 05:49:55,952 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-19 05:49:55,952 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-19 05:49:55,952 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 05:49:55,952 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-19 05:49:55,953 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-19 05:49:55,953 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-19 05:49:55,953 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-19 05:49:55,953 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-19 05:49:55,953 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-19 05:49:55,953 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-19 05:49:55,954 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-19 05:49:55,954 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-19 05:49:55,954 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-19 05:49:55,954 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-19 05:49:55,954 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-19 05:49:55,954 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-19 05:49:55,954 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-19 05:49:55,955 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-19 05:49:55,955 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-19 05:49:55,955 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 05:49:55,955 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-19 05:49:55,955 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 05:49:57,030 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 05:49:57,031 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-19 05:49:57,036 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 05:49:57 BoogieIcfgContainer [2020-08-19 05:49:57,036 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 05:49:57,037 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 05:49:57,037 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 05:49:57,040 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 05:49:57,041 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 05:49:55" (1/3) ... [2020-08-19 05:49:57,042 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ae87a4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 05:49:57, skipping insertion in model container [2020-08-19 05:49:57,042 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:49:55" (2/3) ... [2020-08-19 05:49:57,042 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ae87a4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 05:49:57, skipping insertion in model container [2020-08-19 05:49:57,042 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 05:49:57" (3/3) ... [2020-08-19 05:49:57,044 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product20.cil.c [2020-08-19 05:49:57,055 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 05:49:57,063 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 05:49:57,077 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 05:49:57,102 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 05:49:57,102 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 05:49:57,102 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 05:49:57,102 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 05:49:57,103 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 05:49:57,103 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 05:49:57,103 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 05:49:57,103 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 05:49:57,129 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states. [2020-08-19 05:49:57,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-19 05:49:57,139 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:49:57,141 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:49:57,141 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:49:57,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:49:57,147 INFO L82 PathProgramCache]: Analyzing trace with hash -1020125937, now seen corresponding path program 1 times [2020-08-19 05:49:57,156 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:49:57,157 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1538101606] [2020-08-19 05:49:57,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:49:57,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:57,823 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 05:49:57,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:49:57,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:57,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:49:57,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:57,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:49:57,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:57,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:49:57,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:57,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:49:57,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:57,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 05:49:57,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:57,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 05:49:57,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:57,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 05:49:57,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:57,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 05:49:57,930 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1538101606] [2020-08-19 05:49:57,932 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:49:57,933 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 05:49:57,934 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983267814] [2020-08-19 05:49:57,940 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 05:49:57,941 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:49:57,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 05:49:57,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 05:49:57,959 INFO L87 Difference]: Start difference. First operand 166 states. Second operand 3 states. [2020-08-19 05:49:59,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:49:59,012 INFO L93 Difference]: Finished difference Result 282 states and 370 transitions. [2020-08-19 05:49:59,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 05:49:59,014 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-08-19 05:49:59,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:49:59,029 INFO L225 Difference]: With dead ends: 282 [2020-08-19 05:49:59,029 INFO L226 Difference]: Without dead ends: 153 [2020-08-19 05:49:59,034 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 05:49:59,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-08-19 05:49:59,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 120. [2020-08-19 05:49:59,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-08-19 05:49:59,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 140 transitions. [2020-08-19 05:49:59,117 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 140 transitions. Word has length 52 [2020-08-19 05:49:59,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:49:59,118 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 140 transitions. [2020-08-19 05:49:59,118 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 05:49:59,118 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 140 transitions. [2020-08-19 05:49:59,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-19 05:49:59,122 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:49:59,123 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:49:59,123 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 05:49:59,123 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:49:59,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:49:59,124 INFO L82 PathProgramCache]: Analyzing trace with hash -1976002315, now seen corresponding path program 1 times [2020-08-19 05:49:59,124 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:49:59,125 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1457807733] [2020-08-19 05:49:59,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:49:59,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:59,512 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 05:49:59,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:49:59,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:59,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:49:59,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:59,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:49:59,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:59,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:49:59,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:59,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:49:59,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:59,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 05:49:59,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:59,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 05:49:59,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:59,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-19 05:49:59,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:59,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 05:49:59,559 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1457807733] [2020-08-19 05:49:59,560 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:49:59,560 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 05:49:59,560 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633213740] [2020-08-19 05:49:59,562 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 05:49:59,562 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:49:59,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 05:49:59,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 05:49:59,563 INFO L87 Difference]: Start difference. First operand 120 states and 140 transitions. Second operand 4 states. [2020-08-19 05:50:00,002 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:50:00,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:50:00,767 INFO L93 Difference]: Finished difference Result 205 states and 249 transitions. [2020-08-19 05:50:00,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 05:50:00,768 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-08-19 05:50:00,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:50:00,771 INFO L225 Difference]: With dead ends: 205 [2020-08-19 05:50:00,771 INFO L226 Difference]: Without dead ends: 137 [2020-08-19 05:50:00,773 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-19 05:50:00,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2020-08-19 05:50:00,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 111. [2020-08-19 05:50:00,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-08-19 05:50:00,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 128 transitions. [2020-08-19 05:50:00,811 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 128 transitions. Word has length 53 [2020-08-19 05:50:00,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:50:00,811 INFO L479 AbstractCegarLoop]: Abstraction has 111 states and 128 transitions. [2020-08-19 05:50:00,811 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 05:50:00,811 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 128 transitions. [2020-08-19 05:50:00,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-08-19 05:50:00,814 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:50:00,814 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:50:00,814 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 05:50:00,815 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:50:00,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:50:00,815 INFO L82 PathProgramCache]: Analyzing trace with hash -979616740, now seen corresponding path program 1 times [2020-08-19 05:50:00,815 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:50:00,816 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1533940368] [2020-08-19 05:50:00,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:50:00,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:50:01,212 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 05:50:01,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:50:01,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:50:01,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:50:01,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:50:01,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:50:01,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:50:01,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:50:01,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:50:01,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:50:01,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:50:01,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 05:50:01,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:50:01,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 05:50:01,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:50:01,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-19 05:50:01,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:50:01,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 05:50:01,303 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1533940368] [2020-08-19 05:50:01,303 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:50:01,303 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 05:50:01,304 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626127107] [2020-08-19 05:50:01,304 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 05:50:01,305 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:50:01,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 05:50:01,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-19 05:50:01,305 INFO L87 Difference]: Start difference. First operand 111 states and 128 transitions. Second operand 8 states. [2020-08-19 05:50:01,689 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 05:50:02,015 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 05:50:02,296 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 05:50:02,528 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 05:50:03,287 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:50:04,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:50:04,953 INFO L93 Difference]: Finished difference Result 390 states and 482 transitions. [2020-08-19 05:50:04,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-19 05:50:04,955 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 58 [2020-08-19 05:50:04,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:50:04,959 INFO L225 Difference]: With dead ends: 390 [2020-08-19 05:50:04,960 INFO L226 Difference]: Without dead ends: 303 [2020-08-19 05:50:04,961 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-08-19 05:50:04,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2020-08-19 05:50:05,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 242. [2020-08-19 05:50:05,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2020-08-19 05:50:05,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 291 transitions. [2020-08-19 05:50:05,041 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 291 transitions. Word has length 58 [2020-08-19 05:50:05,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:50:05,041 INFO L479 AbstractCegarLoop]: Abstraction has 242 states and 291 transitions. [2020-08-19 05:50:05,041 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 05:50:05,041 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 291 transitions. [2020-08-19 05:50:05,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-08-19 05:50:05,045 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:50:05,045 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:50:05,045 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 05:50:05,045 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:50:05,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:50:05,046 INFO L82 PathProgramCache]: Analyzing trace with hash 1983050375, now seen corresponding path program 1 times [2020-08-19 05:50:05,046 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:50:05,046 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [159195304] [2020-08-19 05:50:05,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:50:05,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:50:05,352 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 05:50:05,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:50:05,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:50:05,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:50:05,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:50:05,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:50:05,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:50:05,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:50:05,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:50:05,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:50:05,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:50:05,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 05:50:05,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:50:05,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 05:50:05,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:50:05,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-19 05:50:05,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:50:05,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-19 05:50:05,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:50:05,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 05:50:05,469 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [159195304] [2020-08-19 05:50:05,469 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:50:05,470 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 05:50:05,470 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428451990] [2020-08-19 05:50:05,470 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 05:50:05,471 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:50:05,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 05:50:05,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-19 05:50:05,471 INFO L87 Difference]: Start difference. First operand 242 states and 291 transitions. Second operand 8 states. [2020-08-19 05:50:05,876 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 05:50:07,187 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 05:50:07,481 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 05:50:07,733 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 05:50:07,984 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 05:50:08,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:50:08,614 INFO L93 Difference]: Finished difference Result 741 states and 971 transitions. [2020-08-19 05:50:08,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-19 05:50:08,615 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 63 [2020-08-19 05:50:08,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:50:08,621 INFO L225 Difference]: With dead ends: 741 [2020-08-19 05:50:08,622 INFO L226 Difference]: Without dead ends: 523 [2020-08-19 05:50:08,624 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-08-19 05:50:08,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 523 states. [2020-08-19 05:50:08,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 523 to 457. [2020-08-19 05:50:08,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 457 states. [2020-08-19 05:50:08,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 457 states to 457 states and 563 transitions. [2020-08-19 05:50:08,739 INFO L78 Accepts]: Start accepts. Automaton has 457 states and 563 transitions. Word has length 63 [2020-08-19 05:50:08,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:50:08,739 INFO L479 AbstractCegarLoop]: Abstraction has 457 states and 563 transitions. [2020-08-19 05:50:08,740 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 05:50:08,740 INFO L276 IsEmpty]: Start isEmpty. Operand 457 states and 563 transitions. [2020-08-19 05:50:08,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-08-19 05:50:08,743 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:50:08,743 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:50:08,744 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 05:50:08,744 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:50:08,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:50:08,744 INFO L82 PathProgramCache]: Analyzing trace with hash -572770771, now seen corresponding path program 1 times [2020-08-19 05:50:08,745 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:50:08,745 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [154339305] [2020-08-19 05:50:08,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:50:08,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:50:09,012 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 05:50:09,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:50:09,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:50:09,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:50:09,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:50:09,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:50:09,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:50:09,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:50:09,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:50:09,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:50:09,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:50:09,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 05:50:09,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:50:09,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 05:50:09,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:50:09,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 05:50:09,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:50:09,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-19 05:50:09,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:50:09,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-19 05:50:09,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:50:09,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 05:50:09,089 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [154339305] [2020-08-19 05:50:09,089 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:50:09,089 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 05:50:09,090 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51546231] [2020-08-19 05:50:09,090 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 05:50:09,090 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:50:09,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 05:50:09,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-19 05:50:09,091 INFO L87 Difference]: Start difference. First operand 457 states and 563 transitions. Second operand 6 states. [2020-08-19 05:50:09,436 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 05:50:10,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:50:10,299 INFO L93 Difference]: Finished difference Result 806 states and 1047 transitions. [2020-08-19 05:50:10,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-19 05:50:10,300 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 67 [2020-08-19 05:50:10,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:50:10,304 INFO L225 Difference]: With dead ends: 806 [2020-08-19 05:50:10,304 INFO L226 Difference]: Without dead ends: 373 [2020-08-19 05:50:10,306 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2020-08-19 05:50:10,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2020-08-19 05:50:10,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 323. [2020-08-19 05:50:10,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2020-08-19 05:50:10,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 374 transitions. [2020-08-19 05:50:10,375 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 374 transitions. Word has length 67 [2020-08-19 05:50:10,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:50:10,375 INFO L479 AbstractCegarLoop]: Abstraction has 323 states and 374 transitions. [2020-08-19 05:50:10,376 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 05:50:10,376 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 374 transitions. [2020-08-19 05:50:10,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-08-19 05:50:10,377 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:50:10,378 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:50:10,378 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 05:50:10,378 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:50:10,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:50:10,379 INFO L82 PathProgramCache]: Analyzing trace with hash 935934029, now seen corresponding path program 1 times [2020-08-19 05:50:10,379 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:50:10,379 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [421130539] [2020-08-19 05:50:10,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:50:10,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-19 05:50:10,433 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-19 05:50:10,434 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-19 05:50:10,438 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 05:50:10,461 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 05:50:10 BoogieIcfgContainer [2020-08-19 05:50:10,461 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 05:50:10,463 INFO L168 Benchmark]: Toolchain (without parser) took 15326.96 ms. Allocated memory was 141.0 MB in the beginning and 472.9 MB in the end (delta: 331.9 MB). Free memory was 103.3 MB in the beginning and 210.7 MB in the end (delta: -107.4 MB). Peak memory consumption was 224.4 MB. Max. memory is 7.1 GB. [2020-08-19 05:50:10,464 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 141.0 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-19 05:50:10,465 INFO L168 Benchmark]: CACSL2BoogieTranslator took 646.49 ms. Allocated memory was 141.0 MB in the beginning and 204.5 MB in the end (delta: 63.4 MB). Free memory was 103.1 MB in the beginning and 171.0 MB in the end (delta: -68.0 MB). Peak memory consumption was 22.9 MB. Max. memory is 7.1 GB. [2020-08-19 05:50:10,466 INFO L168 Benchmark]: Boogie Preprocessor took 85.72 ms. Allocated memory is still 204.5 MB. Free memory was 171.0 MB in the beginning and 167.0 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. [2020-08-19 05:50:10,467 INFO L168 Benchmark]: RCFGBuilder took 1166.27 ms. Allocated memory was 204.5 MB in the beginning and 234.9 MB in the end (delta: 30.4 MB). Free memory was 167.0 MB in the beginning and 191.9 MB in the end (delta: -24.8 MB). Peak memory consumption was 79.9 MB. Max. memory is 7.1 GB. [2020-08-19 05:50:10,467 INFO L168 Benchmark]: TraceAbstraction took 13423.99 ms. Allocated memory was 234.9 MB in the beginning and 472.9 MB in the end (delta: 238.0 MB). Free memory was 190.5 MB in the beginning and 210.7 MB in the end (delta: -20.2 MB). Peak memory consumption was 217.8 MB. Max. memory is 7.1 GB. [2020-08-19 05:50:10,471 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 141.0 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 646.49 ms. Allocated memory was 141.0 MB in the beginning and 204.5 MB in the end (delta: 63.4 MB). Free memory was 103.1 MB in the beginning and 171.0 MB in the end (delta: -68.0 MB). Peak memory consumption was 22.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 85.72 ms. Allocated memory is still 204.5 MB. Free memory was 171.0 MB in the beginning and 167.0 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1166.27 ms. Allocated memory was 204.5 MB in the beginning and 234.9 MB in the end (delta: 30.4 MB). Free memory was 167.0 MB in the beginning and 191.9 MB in the end (delta: -24.8 MB). Peak memory consumption was 79.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 13423.99 ms. Allocated memory was 234.9 MB in the beginning and 472.9 MB in the end (delta: 238.0 MB). Free memory was 190.5 MB in the beginning and 210.7 MB in the end (delta: -20.2 MB). Peak memory consumption was 217.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 927]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L247] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L444] int cleanupTimeShifts = 4; [L590] int pumpRunning = 0; [L591] int systemActive = 1; [L834] int waterLevel = 1; [L835] int methaneLevelCritical = 0; [L522] int retValue_acc ; [L523] int tmp ; [L527] FCALL select_helpers() [L528] FCALL select_features() [L529] CALL, EXPR valid_product() [L69] int retValue_acc ; [L72] retValue_acc = 1 [L73] return (retValue_acc); [L529] RET, EXPR valid_product() [L529] tmp = valid_product() [L531] COND TRUE \read(tmp) [L533] FCALL setup() [L534] CALL runTest() [L516] CALL test() [L766] int splverifierCounter ; [L767] int tmp ; [L768] int tmp___0 ; [L769] int tmp___1 ; [L770] int tmp___2 ; [L773] splverifierCounter = 0 [L775] COND TRUE 1 [L777] COND TRUE splverifierCounter < 4 [L783] tmp = __VERIFIER_nondet_int() [L785] COND TRUE \read(tmp) [L787] CALL waterRise() [L852] COND TRUE waterLevel < 2 [L853] waterLevel = waterLevel + 1 [L787] RET waterRise() [L793] tmp___0 = __VERIFIER_nondet_int() [L795] COND FALSE !(\read(tmp___0)) [L803] tmp___2 = __VERIFIER_nondet_int() [L805] COND FALSE !(\read(tmp___2)) [L811] tmp___1 = __VERIFIER_nondet_int() [L813] COND TRUE \read(tmp___1) [L815] CALL stopSystem() [L745] COND FALSE !(\read(pumpRunning)) [L752] systemActive = 0 [L815] RET stopSystem() [L822] CALL timeShift() [L597] COND FALSE !(\read(pumpRunning)) [L604] COND FALSE !(\read(systemActive)) [L612] CALL __utac_acc__Specification3_spec__1() [L550] int tmp ; [L551] int tmp___0 ; [L552] int tmp___1 ; [L556] CALL, EXPR isMethaneLevelCritical() [L873] int retValue_acc ; [L876] retValue_acc = methaneLevelCritical [L877] return (retValue_acc); [L556] RET, EXPR isMethaneLevelCritical() [L556] tmp = isMethaneLevelCritical() [L558] COND FALSE !(\read(tmp)) [L562] CALL, EXPR getWaterLevel() [L905] int retValue_acc ; [L908] retValue_acc = waterLevel [L909] return (retValue_acc); [L562] RET, EXPR getWaterLevel() [L562] tmp___0 = getWaterLevel() [L564] COND TRUE tmp___0 == 2 [L566] CALL, EXPR isPumpRunning() [L678] int retValue_acc ; [L681] retValue_acc = pumpRunning [L682] return (retValue_acc); [L566] RET, EXPR isPumpRunning() [L566] tmp___1 = isPumpRunning() [L568] COND FALSE !(\read(tmp___1)) [L572] CALL __automaton_fail() [L927] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 227 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 13.3s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 10.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 533 SDtfs, 843 SDslu, 385 SDs, 0 SdLazy, 1890 SolverSat, 558 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 134 GetRequests, 98 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 4.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=457occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 5 MinimizatonAttempts, 236 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 360 NumberOfCodeBlocks, 360 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 288 ConstructedInterpolants, 0 QuantifiedInterpolants, 82716 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...