/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=WIDEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product44.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 22:35:40,759 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 22:35:40,762 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 22:35:40,802 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 22:35:40,802 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 22:35:40,815 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 22:35:40,816 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 22:35:40,819 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 22:35:40,821 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 22:35:40,825 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 22:35:40,826 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 22:35:40,828 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 22:35:40,828 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 22:35:40,831 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 22:35:40,834 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 22:35:40,836 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 22:35:40,837 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 22:35:40,838 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 22:35:40,840 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 22:35:40,848 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 22:35:40,850 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 22:35:40,851 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 22:35:40,853 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 22:35:40,853 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 22:35:40,856 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 22:35:40,856 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 22:35:40,856 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 22:35:40,859 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 22:35:40,860 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 22:35:40,862 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 22:35:40,862 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 22:35:40,863 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 22:35:40,863 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 22:35:40,864 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 22:35:40,865 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 22:35:40,865 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 22:35:40,866 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 22:35:40,866 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 22:35:40,866 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 22:35:40,867 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 22:35:40,869 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 22:35:40,870 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-18 22:35:40,910 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 22:35:40,910 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 22:35:40,912 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 22:35:40,912 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 22:35:40,913 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 22:35:40,913 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 22:35:40,913 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 22:35:40,913 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 22:35:40,913 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 22:35:40,914 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 22:35:40,915 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 22:35:40,915 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 22:35:40,915 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 22:35:40,916 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 22:35:40,916 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 22:35:40,916 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 22:35:40,916 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 22:35:40,916 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 22:35:40,917 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 22:35:40,917 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 22:35:40,917 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 22:35:40,917 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 22:35:40,917 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 22:35:40,918 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 22:35:40,918 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 22:35:40,918 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 22:35:40,918 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 22:35:40,918 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 22:35:40,918 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 22:35:40,919 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=WIDEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDEST; [2020-08-18 22:35:41,283 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 22:35:41,306 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 22:35:41,312 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 22:35:41,314 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 22:35:41,315 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 22:35:41,316 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product44.cil.c [2020-08-18 22:35:41,391 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a43d40a15/c8d0d4b4d7ee4aec91af265c483f3845/FLAG748a3595d [2020-08-18 22:35:41,917 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 22:35:41,918 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product44.cil.c [2020-08-18 22:35:41,932 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a43d40a15/c8d0d4b4d7ee4aec91af265c483f3845/FLAG748a3595d [2020-08-18 22:35:42,233 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a43d40a15/c8d0d4b4d7ee4aec91af265c483f3845 [2020-08-18 22:35:42,241 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 22:35:42,242 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 22:35:42,243 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 22:35:42,244 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 22:35:42,247 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 22:35:42,248 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 10:35:42" (1/1) ... [2020-08-18 22:35:42,252 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7105da2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:35:42, skipping insertion in model container [2020-08-18 22:35:42,252 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 10:35:42" (1/1) ... [2020-08-18 22:35:42,261 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 22:35:42,303 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 22:35:42,758 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 22:35:42,771 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 22:35:42,851 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 22:35:42,888 INFO L208 MainTranslator]: Completed translation [2020-08-18 22:35:42,888 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:35:42 WrapperNode [2020-08-18 22:35:42,888 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 22:35:42,889 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 22:35:42,889 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 22:35:42,890 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 22:35:42,905 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:35:42" (1/1) ... [2020-08-18 22:35:42,906 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:35:42" (1/1) ... [2020-08-18 22:35:42,925 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:35:42" (1/1) ... [2020-08-18 22:35:42,926 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:35:42" (1/1) ... [2020-08-18 22:35:42,955 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:35:42" (1/1) ... [2020-08-18 22:35:42,965 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:35:42" (1/1) ... [2020-08-18 22:35:42,970 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:35:42" (1/1) ... [2020-08-18 22:35:42,983 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 22:35:42,984 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 22:35:42,984 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 22:35:42,984 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 22:35:42,984 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:35:42" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 22:35:43,054 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 22:35:43,055 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 22:35:43,055 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 22:35:43,056 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-08-18 22:35:43,057 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 22:35:43,057 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 22:35:43,057 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 22:35:43,057 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 22:35:43,057 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 22:35:43,057 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 22:35:43,058 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 22:35:43,059 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 22:35:43,059 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 22:35:43,059 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 22:35:43,059 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 22:35:43,060 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 22:35:43,060 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 22:35:43,060 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 22:35:43,060 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-08-18 22:35:43,061 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 22:35:43,061 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 22:35:43,061 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 22:35:43,061 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 22:35:43,061 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 22:35:43,062 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 22:35:43,062 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-18 22:35:43,063 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-18 22:35:43,063 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 22:35:43,063 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 22:35:43,063 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 22:35:43,064 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 22:35:43,064 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 22:35:43,064 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 22:35:43,064 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 22:35:43,064 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 22:35:43,064 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 22:35:43,065 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 22:35:43,065 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 22:35:43,065 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 22:35:43,065 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 22:35:43,065 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 22:35:43,066 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 22:35:43,066 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 22:35:43,066 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 22:35:43,066 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 22:35:43,066 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 22:35:43,068 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-08-18 22:35:43,068 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 22:35:43,069 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 22:35:43,069 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 22:35:43,069 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 22:35:43,069 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 22:35:43,069 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 22:35:43,069 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 22:35:43,070 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 22:35:43,070 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 22:35:43,070 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 22:35:43,071 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 22:35:43,071 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 22:35:43,071 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 22:35:43,071 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 22:35:43,071 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 22:35:43,071 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 22:35:43,072 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 22:35:43,072 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 22:35:43,072 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 22:35:43,072 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 22:35:43,072 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 22:35:43,072 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 22:35:43,072 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 22:35:43,072 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-18 22:35:43,073 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-18 22:35:43,073 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 22:35:43,074 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 22:35:43,074 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 22:35:43,074 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 22:35:43,075 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 22:35:43,075 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 22:35:43,076 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 22:35:43,076 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 22:35:43,076 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 22:35:43,076 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 22:35:43,076 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 22:35:43,076 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 22:35:43,077 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 22:35:43,077 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-08-18 22:35:43,077 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 22:35:43,077 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 22:35:43,077 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 22:35:43,077 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 22:35:43,077 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 22:35:43,078 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 22:35:43,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 22:35:43,078 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 22:35:44,079 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 22:35:44,080 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 22:35:44,085 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 10:35:44 BoogieIcfgContainer [2020-08-18 22:35:44,085 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 22:35:44,087 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 22:35:44,087 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 22:35:44,090 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 22:35:44,090 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 10:35:42" (1/3) ... [2020-08-18 22:35:44,091 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72be09b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 10:35:44, skipping insertion in model container [2020-08-18 22:35:44,092 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:35:42" (2/3) ... [2020-08-18 22:35:44,092 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72be09b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 10:35:44, skipping insertion in model container [2020-08-18 22:35:44,092 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 10:35:44" (3/3) ... [2020-08-18 22:35:44,094 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product44.cil.c [2020-08-18 22:35:44,105 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 22:35:44,113 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 22:35:44,128 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 22:35:44,155 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 22:35:44,155 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 22:35:44,155 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 22:35:44,155 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 22:35:44,155 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 22:35:44,156 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 22:35:44,156 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 22:35:44,156 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 22:35:44,179 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states. [2020-08-18 22:35:44,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-18 22:35:44,189 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:35:44,190 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 22:35:44,190 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:35:44,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:35:44,197 INFO L82 PathProgramCache]: Analyzing trace with hash -1915366745, now seen corresponding path program 1 times [2020-08-18 22:35:44,206 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:35:44,206 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [770018091] [2020-08-18 22:35:44,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:35:44,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:44,887 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 22:35:44,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:35:44,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:44,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:35:44,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:44,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:35:44,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:44,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:35:44,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:44,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 22:35:44,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:44,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 22:35:44,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:44,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 22:35:44,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:45,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 22:35:45,003 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [770018091] [2020-08-18 22:35:45,005 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:35:45,006 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 22:35:45,007 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983690787] [2020-08-18 22:35:45,013 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 22:35:45,014 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:35:45,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 22:35:45,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 22:35:45,032 INFO L87 Difference]: Start difference. First operand 176 states. Second operand 3 states. [2020-08-18 22:35:46,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:35:46,228 INFO L93 Difference]: Finished difference Result 310 states and 398 transitions. [2020-08-18 22:35:46,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 22:35:46,231 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-18 22:35:46,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:35:46,246 INFO L225 Difference]: With dead ends: 310 [2020-08-18 22:35:46,246 INFO L226 Difference]: Without dead ends: 168 [2020-08-18 22:35:46,253 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 [2020-08-18 22:35:46,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2020-08-18 22:35:46,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 133. [2020-08-18 22:35:46,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-08-18 22:35:46,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 153 transitions. [2020-08-18 22:35:46,355 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 153 transitions. Word has length 46 [2020-08-18 22:35:46,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:35:46,356 INFO L479 AbstractCegarLoop]: Abstraction has 133 states and 153 transitions. [2020-08-18 22:35:46,356 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 22:35:46,356 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 153 transitions. [2020-08-18 22:35:46,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-18 22:35:46,360 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:35:46,360 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 22:35:46,361 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 22:35:46,361 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:35:46,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:35:46,361 INFO L82 PathProgramCache]: Analyzing trace with hash -868486899, now seen corresponding path program 1 times [2020-08-18 22:35:46,362 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:35:46,362 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1373598977] [2020-08-18 22:35:46,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:35:46,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:46,723 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 22:35:46,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:35:46,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:46,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:35:46,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:46,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:35:46,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:46,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:35:46,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:46,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 22:35:46,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:46,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 22:35:46,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:46,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 22:35:46,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:46,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 22:35:46,772 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1373598977] [2020-08-18 22:35:46,773 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:35:46,773 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 22:35:46,773 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141145471] [2020-08-18 22:35:46,775 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 22:35:46,775 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:35:46,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 22:35:46,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 22:35:46,776 INFO L87 Difference]: Start difference. First operand 133 states and 153 transitions. Second operand 4 states. [2020-08-18 22:35:47,223 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:35:48,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:35:48,061 INFO L93 Difference]: Finished difference Result 230 states and 275 transitions. [2020-08-18 22:35:48,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 22:35:48,066 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-18 22:35:48,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:35:48,069 INFO L225 Difference]: With dead ends: 230 [2020-08-18 22:35:48,069 INFO L226 Difference]: Without dead ends: 152 [2020-08-18 22:35:48,074 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-18 22:35:48,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2020-08-18 22:35:48,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 124. [2020-08-18 22:35:48,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-08-18 22:35:48,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 141 transitions. [2020-08-18 22:35:48,145 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 141 transitions. Word has length 47 [2020-08-18 22:35:48,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:35:48,146 INFO L479 AbstractCegarLoop]: Abstraction has 124 states and 141 transitions. [2020-08-18 22:35:48,146 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 22:35:48,146 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 141 transitions. [2020-08-18 22:35:48,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-18 22:35:48,156 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:35:48,156 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 22:35:48,156 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 22:35:48,156 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:35:48,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:35:48,157 INFO L82 PathProgramCache]: Analyzing trace with hash -905097918, now seen corresponding path program 1 times [2020-08-18 22:35:48,157 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:35:48,157 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1896882993] [2020-08-18 22:35:48,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:35:48,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:48,528 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 22:35:48,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:35:48,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:48,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:35:48,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:48,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:35:48,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:48,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:35:48,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:48,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 22:35:48,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:48,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 22:35:48,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:48,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 22:35:48,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:48,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 22:35:48,649 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1896882993] [2020-08-18 22:35:48,649 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:35:48,650 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 22:35:48,650 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96745405] [2020-08-18 22:35:48,650 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 22:35:48,651 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:35:48,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 22:35:48,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 22:35:48,651 INFO L87 Difference]: Start difference. First operand 124 states and 141 transitions. Second operand 8 states. [2020-08-18 22:35:49,045 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 22:35:49,391 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 22:35:49,707 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 22:35:49,963 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 22:35:50,742 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:35:52,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:35:52,575 INFO L93 Difference]: Finished difference Result 427 states and 518 transitions. [2020-08-18 22:35:52,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 22:35:52,576 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2020-08-18 22:35:52,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:35:52,581 INFO L225 Difference]: With dead ends: 427 [2020-08-18 22:35:52,581 INFO L226 Difference]: Without dead ends: 327 [2020-08-18 22:35:52,583 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-08-18 22:35:52,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2020-08-18 22:35:52,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 250. [2020-08-18 22:35:52,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2020-08-18 22:35:52,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 294 transitions. [2020-08-18 22:35:52,649 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 294 transitions. Word has length 52 [2020-08-18 22:35:52,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:35:52,649 INFO L479 AbstractCegarLoop]: Abstraction has 250 states and 294 transitions. [2020-08-18 22:35:52,649 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 22:35:52,649 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 294 transitions. [2020-08-18 22:35:52,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-18 22:35:52,651 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:35:52,651 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] [2020-08-18 22:35:52,651 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 22:35:52,651 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:35:52,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:35:52,652 INFO L82 PathProgramCache]: Analyzing trace with hash 1583600214, now seen corresponding path program 1 times [2020-08-18 22:35:52,652 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:35:52,652 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1207972664] [2020-08-18 22:35:52,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:35:52,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:52,992 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 22:35:52,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:35:53,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:53,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:35:53,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:53,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:35:53,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:53,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:35:53,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:53,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 22:35:53,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:53,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 22:35:53,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:53,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 22:35:53,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:53,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-18 22:35:53,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:53,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 22:35:53,108 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1207972664] [2020-08-18 22:35:53,108 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:35:53,109 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 22:35:53,109 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556137947] [2020-08-18 22:35:53,109 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 22:35:53,110 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:35:53,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 22:35:53,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-18 22:35:53,110 INFO L87 Difference]: Start difference. First operand 250 states and 294 transitions. Second operand 12 states. [2020-08-18 22:35:53,499 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 22:35:53,851 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 22:35:54,129 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 22:35:54,391 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 22:35:55,005 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:35:55,784 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 22:35:56,165 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 22:35:56,471 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 22:35:56,806 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 22:35:57,103 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 22:35:57,525 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 22:35:57,813 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 22:35:58,131 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 22:35:59,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:35:59,865 INFO L93 Difference]: Finished difference Result 1013 states and 1362 transitions. [2020-08-18 22:35:59,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-18 22:35:59,866 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 57 [2020-08-18 22:35:59,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:35:59,874 INFO L225 Difference]: With dead ends: 1013 [2020-08-18 22:35:59,874 INFO L226 Difference]: Without dead ends: 787 [2020-08-18 22:35:59,880 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2020-08-18 22:35:59,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2020-08-18 22:36:00,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 690. [2020-08-18 22:36:00,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 690 states. [2020-08-18 22:36:00,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 690 states to 690 states and 848 transitions. [2020-08-18 22:36:00,092 INFO L78 Accepts]: Start accepts. Automaton has 690 states and 848 transitions. Word has length 57 [2020-08-18 22:36:00,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:36:00,093 INFO L479 AbstractCegarLoop]: Abstraction has 690 states and 848 transitions. [2020-08-18 22:36:00,093 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 22:36:00,093 INFO L276 IsEmpty]: Start isEmpty. Operand 690 states and 848 transitions. [2020-08-18 22:36:00,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-08-18 22:36:00,096 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:36:00,096 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] [2020-08-18 22:36:00,096 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 22:36:00,097 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:36:00,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:36:00,097 INFO L82 PathProgramCache]: Analyzing trace with hash -436303684, now seen corresponding path program 1 times [2020-08-18 22:36:00,097 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:36:00,098 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1696792340] [2020-08-18 22:36:00,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:36:00,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:00,410 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 22:36:00,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:36:00,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:00,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:36:00,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:00,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:36:00,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:00,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:36:00,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:00,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 22:36:00,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:00,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 22:36:00,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:00,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 22:36:00,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:00,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 22:36:00,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:00,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-18 22:36:00,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:00,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 22:36:00,535 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1696792340] [2020-08-18 22:36:00,535 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:36:00,535 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 22:36:00,535 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115208480] [2020-08-18 22:36:00,536 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 22:36:00,536 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:36:00,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 22:36:00,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-18 22:36:00,543 INFO L87 Difference]: Start difference. First operand 690 states and 848 transitions. Second operand 6 states. [2020-08-18 22:36:00,883 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 22:36:02,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:36:02,745 INFO L93 Difference]: Finished difference Result 1681 states and 2195 transitions. [2020-08-18 22:36:02,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-18 22:36:02,748 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 61 [2020-08-18 22:36:02,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:36:02,755 INFO L225 Difference]: With dead ends: 1681 [2020-08-18 22:36:02,755 INFO L226 Difference]: Without dead ends: 1015 [2020-08-18 22:36:02,758 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-08-18 22:36:02,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1015 states. [2020-08-18 22:36:02,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1015 to 948. [2020-08-18 22:36:02,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 948 states. [2020-08-18 22:36:02,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 948 states to 948 states and 1172 transitions. [2020-08-18 22:36:02,963 INFO L78 Accepts]: Start accepts. Automaton has 948 states and 1172 transitions. Word has length 61 [2020-08-18 22:36:02,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:36:02,963 INFO L479 AbstractCegarLoop]: Abstraction has 948 states and 1172 transitions. [2020-08-18 22:36:02,963 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 22:36:02,963 INFO L276 IsEmpty]: Start isEmpty. Operand 948 states and 1172 transitions. [2020-08-18 22:36:02,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-08-18 22:36:02,967 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:36:02,967 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 22:36:02,967 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 22:36:02,967 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:36:02,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:36:02,968 INFO L82 PathProgramCache]: Analyzing trace with hash 1209411089, now seen corresponding path program 1 times [2020-08-18 22:36:02,968 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:36:02,968 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1877479903] [2020-08-18 22:36:02,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:36:02,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:03,332 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 22:36:03,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:36:03,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:03,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:36:03,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:03,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:36:03,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:03,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:36:03,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:03,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 22:36:03,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:03,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 22:36:03,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:03,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 22:36:03,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:03,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-18 22:36:03,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:03,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:36:03,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:03,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:36:03,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:03,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-18 22:36:03,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:03,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-18 22:36:03,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:03,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-18 22:36:03,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:03,488 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 13 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-18 22:36:03,489 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1877479903] [2020-08-18 22:36:03,490 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 22:36:03,490 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-18 22:36:03,491 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715794659] [2020-08-18 22:36:03,491 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 22:36:03,491 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:36:03,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 22:36:03,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-08-18 22:36:03,493 INFO L87 Difference]: Start difference. First operand 948 states and 1172 transitions. Second operand 10 states. [2020-08-18 22:36:04,097 WARN L193 SmtUtils]: Spent 461.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 186 [2020-08-18 22:36:04,761 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 22:36:06,934 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 22:36:08,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:36:08,518 INFO L93 Difference]: Finished difference Result 1803 states and 2319 transitions. [2020-08-18 22:36:08,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-18 22:36:08,519 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 89 [2020-08-18 22:36:08,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:36:08,527 INFO L225 Difference]: With dead ends: 1803 [2020-08-18 22:36:08,527 INFO L226 Difference]: Without dead ends: 1150 [2020-08-18 22:36:08,530 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=143, Invalid=507, Unknown=0, NotChecked=0, Total=650 [2020-08-18 22:36:08,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1150 states. [2020-08-18 22:36:08,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1150 to 1055. [2020-08-18 22:36:08,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1055 states. [2020-08-18 22:36:08,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1055 states to 1055 states and 1284 transitions. [2020-08-18 22:36:08,741 INFO L78 Accepts]: Start accepts. Automaton has 1055 states and 1284 transitions. Word has length 89 [2020-08-18 22:36:08,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:36:08,744 INFO L479 AbstractCegarLoop]: Abstraction has 1055 states and 1284 transitions. [2020-08-18 22:36:08,744 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 22:36:08,744 INFO L276 IsEmpty]: Start isEmpty. Operand 1055 states and 1284 transitions. [2020-08-18 22:36:08,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-08-18 22:36:08,750 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:36:08,750 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 22:36:08,752 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 22:36:08,752 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:36:08,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:36:08,753 INFO L82 PathProgramCache]: Analyzing trace with hash -1717622205, now seen corresponding path program 1 times [2020-08-18 22:36:08,753 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:36:08,754 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [749342639] [2020-08-18 22:36:08,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:36:08,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:09,082 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 22:36:09,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:36:09,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:09,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:36:09,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:09,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:36:09,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:09,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:36:09,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:09,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 22:36:09,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:09,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 22:36:09,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:09,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:36:09,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:09,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:36:09,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:09,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:36:09,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:09,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 22:36:09,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:09,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:36:09,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:09,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:36:09,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:09,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:36:09,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:09,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 22:36:09,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:09,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:36:09,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:09,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-18 22:36:09,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:09,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-08-18 22:36:09,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:09,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:36:09,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:09,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-18 22:36:09,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:09,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-08-18 22:36:09,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:09,314 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-18 22:36:09,314 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [749342639] [2020-08-18 22:36:09,314 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 22:36:09,315 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-18 22:36:09,315 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574551157] [2020-08-18 22:36:09,316 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 22:36:09,316 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:36:09,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 22:36:09,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-18 22:36:09,316 INFO L87 Difference]: Start difference. First operand 1055 states and 1284 transitions. Second operand 10 states. [2020-08-18 22:36:10,341 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 22:36:10,616 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 22:36:10,897 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:36:11,159 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:36:12,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:36:12,420 INFO L93 Difference]: Finished difference Result 2230 states and 2894 transitions. [2020-08-18 22:36:12,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 22:36:12,421 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 126 [2020-08-18 22:36:12,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:36:12,433 INFO L225 Difference]: With dead ends: 2230 [2020-08-18 22:36:12,433 INFO L226 Difference]: Without dead ends: 1199 [2020-08-18 22:36:12,439 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-18 22:36:12,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1199 states. [2020-08-18 22:36:12,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1199 to 1085. [2020-08-18 22:36:12,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1085 states. [2020-08-18 22:36:12,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1085 states to 1085 states and 1318 transitions. [2020-08-18 22:36:12,681 INFO L78 Accepts]: Start accepts. Automaton has 1085 states and 1318 transitions. Word has length 126 [2020-08-18 22:36:12,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:36:12,682 INFO L479 AbstractCegarLoop]: Abstraction has 1085 states and 1318 transitions. [2020-08-18 22:36:12,682 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 22:36:12,682 INFO L276 IsEmpty]: Start isEmpty. Operand 1085 states and 1318 transitions. [2020-08-18 22:36:12,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-08-18 22:36:12,685 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:36:12,685 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 22:36:12,686 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 22:36:12,686 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:36:12,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:36:12,686 INFO L82 PathProgramCache]: Analyzing trace with hash -1477382459, now seen corresponding path program 1 times [2020-08-18 22:36:12,687 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:36:12,687 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [166766686] [2020-08-18 22:36:12,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:36:12,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:12,998 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 22:36:12,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:36:13,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:13,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:36:13,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:13,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:36:13,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:13,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:36:13,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:13,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 22:36:13,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:13,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 22:36:13,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:13,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:36:13,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:13,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:36:13,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:13,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:36:13,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:13,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 22:36:13,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:13,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:36:13,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:13,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:36:13,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:13,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:36:13,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:13,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 22:36:13,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:13,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:36:13,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:13,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-18 22:36:13,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:13,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-08-18 22:36:13,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:13,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:36:13,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:13,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-18 22:36:13,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:13,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-08-18 22:36:13,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:13,174 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-18 22:36:13,175 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [166766686] [2020-08-18 22:36:13,175 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 22:36:13,175 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-18 22:36:13,175 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809206123] [2020-08-18 22:36:13,176 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 22:36:13,176 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:36:13,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 22:36:13,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-08-18 22:36:13,177 INFO L87 Difference]: Start difference. First operand 1085 states and 1318 transitions. Second operand 12 states. [2020-08-18 22:36:13,715 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 22:36:13,988 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:36:14,252 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:36:15,017 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:36:15,304 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:36:15,572 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:36:16,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:36:16,662 INFO L93 Difference]: Finished difference Result 1969 states and 2463 transitions. [2020-08-18 22:36:16,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 22:36:16,663 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 126 [2020-08-18 22:36:16,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:36:16,670 INFO L225 Difference]: With dead ends: 1969 [2020-08-18 22:36:16,670 INFO L226 Difference]: Without dead ends: 908 [2020-08-18 22:36:16,674 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-18 22:36:16,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 908 states. [2020-08-18 22:36:16,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 908 to 856. [2020-08-18 22:36:16,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 856 states. [2020-08-18 22:36:16,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 856 states to 856 states and 1029 transitions. [2020-08-18 22:36:16,872 INFO L78 Accepts]: Start accepts. Automaton has 856 states and 1029 transitions. Word has length 126 [2020-08-18 22:36:16,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:36:16,873 INFO L479 AbstractCegarLoop]: Abstraction has 856 states and 1029 transitions. [2020-08-18 22:36:16,873 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 22:36:16,873 INFO L276 IsEmpty]: Start isEmpty. Operand 856 states and 1029 transitions. [2020-08-18 22:36:16,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-08-18 22:36:16,877 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:36:16,877 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 22:36:16,878 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 22:36:16,878 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:36:16,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:36:16,878 INFO L82 PathProgramCache]: Analyzing trace with hash -41255168, now seen corresponding path program 1 times [2020-08-18 22:36:16,879 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:36:16,879 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1158650478] [2020-08-18 22:36:16,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:36:16,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:17,238 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 22:36:17,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:36:17,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:17,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:36:17,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:17,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:36:17,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:17,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:36:17,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:17,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 22:36:17,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:17,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 22:36:17,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:17,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 22:36:17,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:17,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:36:17,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:17,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:36:17,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:17,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:36:17,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:17,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 22:36:17,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:17,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:36:17,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:17,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:36:17,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:17,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:36:17,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:17,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 22:36:17,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:17,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:36:17,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:17,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-18 22:36:17,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:17,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-18 22:36:17,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:17,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:36:17,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:17,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-18 22:36:17,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:17,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-08-18 22:36:17,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:17,418 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 18 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 22:36:17,419 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1158650478] [2020-08-18 22:36:17,419 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 22:36:17,419 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-18 22:36:17,419 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111164197] [2020-08-18 22:36:17,420 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 22:36:17,420 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:36:17,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 22:36:17,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-08-18 22:36:17,421 INFO L87 Difference]: Start difference. First operand 856 states and 1029 transitions. Second operand 12 states. [2020-08-18 22:36:18,008 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:36:18,939 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 22:36:19,253 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 22:36:19,533 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 22:36:19,810 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 22:36:20,082 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 22:36:20,494 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 22:36:21,161 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 22:36:21,486 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 22:36:21,822 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 22:36:23,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:36:23,839 INFO L93 Difference]: Finished difference Result 2072 states and 2648 transitions. [2020-08-18 22:36:23,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-18 22:36:23,840 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 130 [2020-08-18 22:36:23,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:36:23,850 INFO L225 Difference]: With dead ends: 2072 [2020-08-18 22:36:23,851 INFO L226 Difference]: Without dead ends: 1389 [2020-08-18 22:36:23,853 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 47 SyntacticMatches, 4 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=251, Invalid=619, Unknown=0, NotChecked=0, Total=870 [2020-08-18 22:36:23,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1389 states. [2020-08-18 22:36:24,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1389 to 1217. [2020-08-18 22:36:24,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1217 states. [2020-08-18 22:36:24,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1217 states to 1217 states and 1483 transitions. [2020-08-18 22:36:24,143 INFO L78 Accepts]: Start accepts. Automaton has 1217 states and 1483 transitions. Word has length 130 [2020-08-18 22:36:24,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:36:24,145 INFO L479 AbstractCegarLoop]: Abstraction has 1217 states and 1483 transitions. [2020-08-18 22:36:24,145 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 22:36:24,145 INFO L276 IsEmpty]: Start isEmpty. Operand 1217 states and 1483 transitions. [2020-08-18 22:36:24,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-08-18 22:36:24,151 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:36:24,152 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 22:36:24,152 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 22:36:24,152 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:36:24,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:36:24,153 INFO L82 PathProgramCache]: Analyzing trace with hash -786970621, now seen corresponding path program 1 times [2020-08-18 22:36:24,153 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:36:24,153 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [219021757] [2020-08-18 22:36:24,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:36:24,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:24,463 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 22:36:24,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:36:24,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:24,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:36:24,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:24,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:36:24,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:24,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:36:24,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:24,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 22:36:24,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:24,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 22:36:24,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:24,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 22:36:24,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:24,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:36:24,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:24,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:36:24,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:24,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:36:24,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:24,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 22:36:24,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:24,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:36:24,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:24,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:36:24,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:24,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:36:24,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:24,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 22:36:24,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:24,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:36:24,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:24,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-18 22:36:24,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:24,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:36:24,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:24,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:36:24,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:24,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:36:24,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:24,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 22:36:24,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:24,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:36:24,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:24,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-08-18 22:36:24,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:24,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-08-18 22:36:24,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:24,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-08-18 22:36:24,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:24,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-08-18 22:36:24,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:24,756 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 36 proven. 5 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-08-18 22:36:24,758 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [219021757] [2020-08-18 22:36:24,759 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 22:36:24,759 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-18 22:36:24,762 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134169520] [2020-08-18 22:36:24,763 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-18 22:36:24,763 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:36:24,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-18 22:36:24,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2020-08-18 22:36:24,764 INFO L87 Difference]: Start difference. First operand 1217 states and 1483 transitions. Second operand 13 states. [2020-08-18 22:36:25,398 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 22:36:25,682 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:36:25,950 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:36:26,516 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 22:36:27,862 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 22:36:29,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:36:29,007 INFO L93 Difference]: Finished difference Result 2226 states and 2782 transitions. [2020-08-18 22:36:29,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-08-18 22:36:29,008 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 163 [2020-08-18 22:36:29,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:36:29,016 INFO L225 Difference]: With dead ends: 2226 [2020-08-18 22:36:29,016 INFO L226 Difference]: Without dead ends: 1233 [2020-08-18 22:36:29,020 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=155, Invalid=601, Unknown=0, NotChecked=0, Total=756 [2020-08-18 22:36:29,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1233 states. [2020-08-18 22:36:29,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1233 to 911. [2020-08-18 22:36:29,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 911 states. [2020-08-18 22:36:29,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 911 states to 911 states and 1058 transitions. [2020-08-18 22:36:29,268 INFO L78 Accepts]: Start accepts. Automaton has 911 states and 1058 transitions. Word has length 163 [2020-08-18 22:36:29,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:36:29,269 INFO L479 AbstractCegarLoop]: Abstraction has 911 states and 1058 transitions. [2020-08-18 22:36:29,269 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-18 22:36:29,269 INFO L276 IsEmpty]: Start isEmpty. Operand 911 states and 1058 transitions. [2020-08-18 22:36:29,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-08-18 22:36:29,274 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:36:29,275 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 22:36:29,275 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 22:36:29,275 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:36:29,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:36:29,276 INFO L82 PathProgramCache]: Analyzing trace with hash -1876724494, now seen corresponding path program 2 times [2020-08-18 22:36:29,276 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:36:29,276 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1591071775] [2020-08-18 22:36:29,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:36:29,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 22:36:29,343 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 22:36:29,344 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 22:36:29,349 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 22:36:29,378 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 10:36:29 BoogieIcfgContainer [2020-08-18 22:36:29,378 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 22:36:29,380 INFO L168 Benchmark]: Toolchain (without parser) took 47137.43 ms. Allocated memory was 139.5 MB in the beginning and 741.9 MB in the end (delta: 602.4 MB). Free memory was 101.3 MB in the beginning and 601.3 MB in the end (delta: -499.9 MB). Peak memory consumption was 102.5 MB. Max. memory is 7.1 GB. [2020-08-18 22:36:29,380 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-18 22:36:29,381 INFO L168 Benchmark]: CACSL2BoogieTranslator took 645.52 ms. Allocated memory was 139.5 MB in the beginning and 200.8 MB in the end (delta: 61.3 MB). Free memory was 101.1 MB in the beginning and 168.0 MB in the end (delta: -66.9 MB). Peak memory consumption was 25.5 MB. Max. memory is 7.1 GB. [2020-08-18 22:36:29,382 INFO L168 Benchmark]: Boogie Preprocessor took 94.08 ms. Allocated memory is still 200.8 MB. Free memory was 168.0 MB in the beginning and 162.1 MB in the end (delta: 5.9 MB). Peak memory consumption was 5.9 MB. Max. memory is 7.1 GB. [2020-08-18 22:36:29,382 INFO L168 Benchmark]: RCFGBuilder took 1101.72 ms. Allocated memory was 200.8 MB in the beginning and 234.4 MB in the end (delta: 33.6 MB). Free memory was 162.1 MB in the beginning and 192.3 MB in the end (delta: -30.1 MB). Peak memory consumption was 80.8 MB. Max. memory is 7.1 GB. [2020-08-18 22:36:29,384 INFO L168 Benchmark]: TraceAbstraction took 45291.59 ms. Allocated memory was 234.4 MB in the beginning and 741.9 MB in the end (delta: 507.5 MB). Free memory was 190.9 MB in the beginning and 601.3 MB in the end (delta: -410.4 MB). Peak memory consumption was 97.1 MB. Max. memory is 7.1 GB. [2020-08-18 22:36:29,389 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 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 645.52 ms. Allocated memory was 139.5 MB in the beginning and 200.8 MB in the end (delta: 61.3 MB). Free memory was 101.1 MB in the beginning and 168.0 MB in the end (delta: -66.9 MB). Peak memory consumption was 25.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 94.08 ms. Allocated memory is still 200.8 MB. Free memory was 168.0 MB in the beginning and 162.1 MB in the end (delta: 5.9 MB). Peak memory consumption was 5.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1101.72 ms. Allocated memory was 200.8 MB in the beginning and 234.4 MB in the end (delta: 33.6 MB). Free memory was 162.1 MB in the beginning and 192.3 MB in the end (delta: -30.1 MB). Peak memory consumption was 80.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 45291.59 ms. Allocated memory was 234.4 MB in the beginning and 741.9 MB in the end (delta: 507.5 MB). Free memory was 190.9 MB in the beginning and 601.3 MB in the end (delta: -410.4 MB). Peak memory consumption was 97.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 752]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L238] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L555] int pumpRunning = 0; [L556] int systemActive = 1; [L757] int cleanupTimeShifts = 4; [L853] int waterLevel = 1; [L854] int methaneLevelCritical = 0; [L830] int retValue_acc ; [L831] int tmp ; [L835] FCALL select_helpers() [L836] FCALL select_features() [L837] CALL, EXPR valid_product() [L464] int retValue_acc ; [L467] retValue_acc = 1 [L468] return (retValue_acc); [L837] RET, EXPR valid_product() [L837] tmp = valid_product() [L839] COND TRUE \read(tmp) [L841] FCALL setup() [L842] CALL runTest() [L824] CALL test() [L480] int splverifierCounter ; [L481] int tmp ; [L482] int tmp___0 ; [L483] int tmp___1 ; [L484] int tmp___2 ; [L487] splverifierCounter = 0 [L489] COND TRUE 1 [L491] COND TRUE splverifierCounter < 4 [L497] tmp = __VERIFIER_nondet_int() [L499] COND TRUE \read(tmp) [L501] CALL waterRise() [L871] COND TRUE waterLevel < 2 [L872] waterLevel = waterLevel + 1 [L501] RET waterRise() [L507] tmp___0 = __VERIFIER_nondet_int() [L509] COND FALSE !(\read(tmp___0)) [L517] tmp___2 = __VERIFIER_nondet_int() [L519] COND FALSE !(\read(tmp___2)) [L525] tmp___1 = __VERIFIER_nondet_int() [L527] COND FALSE !(\read(tmp___1)) [L536] CALL timeShift() [L562] COND FALSE !(\read(pumpRunning)) [L569] COND TRUE \read(systemActive) [L571] CALL processEnvironment() [L591] int tmp ; [L594] COND TRUE ! pumpRunning [L596] CALL, EXPR isHighWaterLevel() [L706] int retValue_acc ; [L707] int tmp ; [L708] int tmp___0 ; [L712] CALL, EXPR isHighWaterSensorDry() [L933] int retValue_acc ; [L936] COND FALSE !(waterLevel < 2) [L940] retValue_acc = 0 [L941] return (retValue_acc); [L712] RET, EXPR isHighWaterSensorDry() [L712] tmp = isHighWaterSensorDry() [L714] COND FALSE !(\read(tmp)) [L717] tmp___0 = 1 [L719] retValue_acc = tmp___0 [L720] return (retValue_acc); [L596] RET, EXPR isHighWaterLevel() [L596] tmp = isHighWaterLevel() [L598] COND TRUE \read(tmp) [L600] CALL activatePump() [L625] int tmp ; [L629] CALL, EXPR isMethaneAlarm() [L650] int retValue_acc ; [L654] CALL, EXPR isMethaneLevelCritical() [L892] int retValue_acc ; [L895] retValue_acc = methaneLevelCritical [L896] return (retValue_acc); [L654] RET, EXPR isMethaneLevelCritical() [L654] retValue_acc = isMethaneLevelCritical() [L656] return (retValue_acc); [L629] RET, EXPR isMethaneAlarm() [L629] tmp = isMethaneAlarm() [L631] COND FALSE !(\read(tmp)) [L635] CALL activatePump__wrappee__highWaterSensor() [L619] pumpRunning = 1 [L635] RET activatePump__wrappee__highWaterSensor() [L600] RET activatePump() [L571] RET processEnvironment() [L577] CALL __utac_acc__Specification4_spec__1() [L44] int tmp ; [L45] int tmp___0 ; [L49] CALL, EXPR getWaterLevel() [L924] int retValue_acc ; [L927] retValue_acc = waterLevel [L928] return (retValue_acc); [L49] RET, EXPR getWaterLevel() [L49] tmp = getWaterLevel() [L51] COND FALSE !(tmp == 0) [L577] RET __utac_acc__Specification4_spec__1() [L536] RET timeShift() [L489] COND TRUE 1 [L491] COND TRUE splverifierCounter < 4 [L497] tmp = __VERIFIER_nondet_int() [L499] COND FALSE !(\read(tmp)) [L507] tmp___0 = __VERIFIER_nondet_int() [L509] COND FALSE !(\read(tmp___0)) [L517] tmp___2 = __VERIFIER_nondet_int() [L519] COND FALSE !(\read(tmp___2)) [L525] tmp___1 = __VERIFIER_nondet_int() [L527] COND FALSE !(\read(tmp___1)) [L536] CALL timeShift() [L562] COND TRUE \read(pumpRunning) [L564] CALL lowerWaterLevel() [L859] COND TRUE waterLevel > 0 [L860] waterLevel = waterLevel - 1 [L564] RET lowerWaterLevel() [L569] COND TRUE \read(systemActive) [L571] CALL processEnvironment() [L591] int tmp ; [L594] COND FALSE !(! pumpRunning) [L609] FCALL processEnvironment__wrappee__base() [L571] RET processEnvironment() [L577] CALL __utac_acc__Specification4_spec__1() [L44] int tmp ; [L45] int tmp___0 ; [L49] CALL, EXPR getWaterLevel() [L924] int retValue_acc ; [L927] retValue_acc = waterLevel [L928] return (retValue_acc); [L49] RET, EXPR getWaterLevel() [L49] tmp = getWaterLevel() [L51] COND FALSE !(tmp == 0) [L577] RET __utac_acc__Specification4_spec__1() [L536] RET timeShift() [L489] COND TRUE 1 [L491] COND TRUE splverifierCounter < 4 [L497] tmp = __VERIFIER_nondet_int() [L499] COND FALSE !(\read(tmp)) [L507] tmp___0 = __VERIFIER_nondet_int() [L509] COND FALSE !(\read(tmp___0)) [L517] tmp___2 = __VERIFIER_nondet_int() [L519] COND FALSE !(\read(tmp___2)) [L525] tmp___1 = __VERIFIER_nondet_int() [L527] COND FALSE !(\read(tmp___1)) [L536] CALL timeShift() [L562] COND TRUE \read(pumpRunning) [L564] CALL lowerWaterLevel() [L859] COND TRUE waterLevel > 0 [L860] waterLevel = waterLevel - 1 [L564] RET lowerWaterLevel() [L569] COND TRUE \read(systemActive) [L571] CALL processEnvironment() [L591] int tmp ; [L594] COND FALSE !(! pumpRunning) [L609] FCALL processEnvironment__wrappee__base() [L571] RET processEnvironment() [L577] CALL __utac_acc__Specification4_spec__1() [L44] int tmp ; [L45] int tmp___0 ; [L49] CALL, EXPR getWaterLevel() [L924] int retValue_acc ; [L927] retValue_acc = waterLevel [L928] return (retValue_acc); [L49] RET, EXPR getWaterLevel() [L49] tmp = getWaterLevel() [L51] COND TRUE tmp == 0 [L53] CALL, EXPR isPumpRunning() [L661] int retValue_acc ; [L664] retValue_acc = pumpRunning [L665] return (retValue_acc); [L53] RET, EXPR isPumpRunning() [L53] tmp___0 = isPumpRunning() [L55] COND TRUE \read(tmp___0) [L57] CALL __automaton_fail() [L752] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 40 procedures, 232 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 45.1s, OverallIterations: 11, TraceHistogramMax: 3, AutomataDifference: 37.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1357 SDtfs, 3146 SDslu, 1751 SDs, 0 SdLazy, 8586 SolverSat, 2304 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 18.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 473 GetRequests, 312 SyntacticMatches, 6 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 601 ImplicationChecksByTransitivity, 16.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1217occurred 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: 1.8s AutomataMinimizationTime, 10 MinimizatonAttempts, 1059 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 4.5s InterpolantComputationTime, 1063 NumberOfCodeBlocks, 1063 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 887 ConstructedInterpolants, 0 QuantifiedInterpolants, 327289 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 5 PerfectInterpolantSequences, 152/172 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...