/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=HIGHLEXORDER -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product37.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 19:15:37,843 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 19:15:37,846 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 19:15:37,887 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 19:15:37,887 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 19:15:37,896 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 19:15:37,899 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 19:15:37,902 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 19:15:37,905 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 19:15:37,908 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 19:15:37,909 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 19:15:37,910 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 19:15:37,910 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 19:15:37,913 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 19:15:37,915 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 19:15:37,917 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 19:15:37,918 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 19:15:37,919 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 19:15:37,921 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 19:15:37,929 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 19:15:37,931 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 19:15:37,932 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 19:15:37,933 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 19:15:37,934 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 19:15:37,946 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 19:15:37,946 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 19:15:37,952 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 19:15:37,953 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 19:15:37,953 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 19:15:37,954 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 19:15:37,954 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 19:15:37,955 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 19:15:37,955 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 19:15:37,956 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 19:15:37,957 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 19:15:37,957 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 19:15:37,958 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 19:15:37,958 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 19:15:37,958 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 19:15:37,959 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 19:15:37,960 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 19:15:37,961 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 19:15:37,983 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 19:15:37,984 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 19:15:37,985 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 19:15:37,985 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 19:15:37,985 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 19:15:37,985 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 19:15:37,986 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 19:15:37,986 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 19:15:37,986 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 19:15:37,986 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 19:15:37,986 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 19:15:37,987 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 19:15:37,987 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 19:15:37,987 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 19:15:37,987 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 19:15:37,987 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 19:15:37,987 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 19:15:37,988 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 19:15:37,988 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 19:15:37,988 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 19:15:37,988 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 19:15:37,989 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 19:15:37,989 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 19:15:37,989 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 19:15:37,989 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 19:15:37,989 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 19:15:37,989 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 19:15:37,990 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 19:15:37,990 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 19:15:37,990 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=HIGHLEXORDER; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=HIGHLEXORDER; [2020-08-18 19:15:38,289 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 19:15:38,301 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 19:15:38,305 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 19:15:38,306 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 19:15:38,307 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 19:15:38,307 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product37.cil.c [2020-08-18 19:15:38,375 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0566f7557/051ac2f5a5664c7288575024e0be553e/FLAG571a02253 [2020-08-18 19:15:38,920 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 19:15:38,921 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product37.cil.c [2020-08-18 19:15:38,935 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0566f7557/051ac2f5a5664c7288575024e0be553e/FLAG571a02253 [2020-08-18 19:15:39,203 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0566f7557/051ac2f5a5664c7288575024e0be553e [2020-08-18 19:15:39,212 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 19:15:39,214 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 19:15:39,216 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 19:15:39,216 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 19:15:39,220 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 19:15:39,221 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 07:15:39" (1/1) ... [2020-08-18 19:15:39,224 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f36cd5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:15:39, skipping insertion in model container [2020-08-18 19:15:39,224 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 07:15:39" (1/1) ... [2020-08-18 19:15:39,232 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 19:15:39,277 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 19:15:39,602 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 19:15:39,721 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 19:15:39,819 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 19:15:39,866 INFO L208 MainTranslator]: Completed translation [2020-08-18 19:15:39,866 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:15:39 WrapperNode [2020-08-18 19:15:39,867 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 19:15:39,867 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 19:15:39,868 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 19:15:39,868 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 19:15:39,882 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:15:39" (1/1) ... [2020-08-18 19:15:39,882 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:15:39" (1/1) ... [2020-08-18 19:15:39,902 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:15:39" (1/1) ... [2020-08-18 19:15:39,902 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:15:39" (1/1) ... [2020-08-18 19:15:39,934 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:15:39" (1/1) ... [2020-08-18 19:15:39,950 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:15:39" (1/1) ... [2020-08-18 19:15:39,958 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:15:39" (1/1) ... [2020-08-18 19:15:39,979 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 19:15:39,979 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 19:15:39,980 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 19:15:39,980 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 19:15:39,980 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:15:39" (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 19:15:40,071 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 19:15:40,072 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 19:15:40,072 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 19:15:40,072 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 19:15:40,072 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 19:15:40,072 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 19:15:40,073 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 19:15:40,073 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 19:15:40,073 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 19:15:40,073 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 19:15:40,073 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 19:15:40,074 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 19:15:40,074 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 19:15:40,074 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 19:15:40,074 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-08-18 19:15:40,074 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 19:15:40,074 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 19:15:40,075 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 19:15:40,075 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 19:15:40,075 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 19:15:40,075 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 19:15:40,075 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 19:15:40,075 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 19:15:40,076 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 19:15:40,076 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 19:15:40,076 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 19:15:40,076 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 19:15:40,076 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 19:15:40,076 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 19:15:40,077 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 19:15:40,077 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 19:15:40,077 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 19:15:40,077 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 19:15:40,077 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 19:15:40,077 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 19:15:40,078 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 19:15:40,078 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 19:15:40,078 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 19:15:40,078 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 19:15:40,078 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 19:15:40,078 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 19:15:40,079 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 19:15:40,079 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 19:15:40,079 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 19:15:40,079 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 19:15:40,079 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 19:15:40,079 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 19:15:40,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 19:15:40,080 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 19:15:40,080 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 19:15:40,080 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 19:15:40,080 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 19:15:40,080 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 19:15:40,081 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 19:15:40,081 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 19:15:40,081 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 19:15:40,081 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 19:15:40,081 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 19:15:40,082 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 19:15:40,082 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 19:15:40,082 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 19:15:40,082 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 19:15:40,082 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 19:15:40,082 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 19:15:40,082 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 19:15:40,083 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 19:15:40,083 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 19:15:40,083 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 19:15:40,083 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 19:15:40,083 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 19:15:40,083 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 19:15:40,084 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 19:15:40,084 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 19:15:40,084 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 19:15:40,084 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-08-18 19:15:40,084 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 19:15:40,084 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 19:15:40,085 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 19:15:40,085 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 19:15:40,085 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 19:15:40,085 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 19:15:40,085 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 19:15:40,085 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 19:15:40,086 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 19:15:40,086 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 19:15:40,086 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 19:15:40,086 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 19:15:40,086 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 19:15:40,086 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 19:15:40,086 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 19:15:41,192 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 19:15:41,192 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 19:15:41,197 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 07:15:41 BoogieIcfgContainer [2020-08-18 19:15:41,197 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 19:15:41,199 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 19:15:41,199 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 19:15:41,202 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 19:15:41,202 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 07:15:39" (1/3) ... [2020-08-18 19:15:41,203 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@200ff3a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 07:15:41, skipping insertion in model container [2020-08-18 19:15:41,204 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:15:39" (2/3) ... [2020-08-18 19:15:41,204 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@200ff3a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 07:15:41, skipping insertion in model container [2020-08-18 19:15:41,204 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 07:15:41" (3/3) ... [2020-08-18 19:15:41,206 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product37.cil.c [2020-08-18 19:15:41,217 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 19:15:41,225 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 19:15:41,240 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 19:15:41,267 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 19:15:41,268 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 19:15:41,268 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 19:15:41,268 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 19:15:41,269 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 19:15:41,269 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 19:15:41,269 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 19:15:41,269 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 19:15:41,293 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states. [2020-08-18 19:15:41,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-18 19:15:41,304 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:15:41,306 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 19:15:41,306 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:15:41,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:15:41,313 INFO L82 PathProgramCache]: Analyzing trace with hash -749162492, now seen corresponding path program 1 times [2020-08-18 19:15:41,325 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:15:41,326 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1514513367] [2020-08-18 19:15:41,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:15:41,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:15:42,038 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 19:15:42,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:15:42,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:15:42,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:15:42,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:15:42,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:15:42,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:15:42,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:15:42,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:15:42,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:15:42,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:15:42,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 19:15:42,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:15:42,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 19:15:42,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:15:42,121 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 19:15:42,122 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1514513367] [2020-08-18 19:15:42,125 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:15:42,125 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 19:15:42,127 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874550829] [2020-08-18 19:15:42,135 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 19:15:42,136 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:15:42,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 19:15:42,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 19:15:42,155 INFO L87 Difference]: Start difference. First operand 166 states. Second operand 3 states. [2020-08-18 19:15:43,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:15:43,350 INFO L93 Difference]: Finished difference Result 287 states and 378 transitions. [2020-08-18 19:15:43,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 19:15:43,352 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-18 19:15:43,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:15:43,366 INFO L225 Difference]: With dead ends: 287 [2020-08-18 19:15:43,367 INFO L226 Difference]: Without dead ends: 155 [2020-08-18 19:15:43,371 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 19:15:43,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-08-18 19:15:43,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 123. [2020-08-18 19:15:43,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-08-18 19:15:43,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 145 transitions. [2020-08-18 19:15:43,462 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 145 transitions. Word has length 46 [2020-08-18 19:15:43,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:15:43,463 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 145 transitions. [2020-08-18 19:15:43,463 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 19:15:43,464 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 145 transitions. [2020-08-18 19:15:43,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-18 19:15:43,471 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:15:43,471 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 19:15:43,472 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 19:15:43,472 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:15:43,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:15:43,472 INFO L82 PathProgramCache]: Analyzing trace with hash 1435333190, now seen corresponding path program 1 times [2020-08-18 19:15:43,473 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:15:43,473 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1864831292] [2020-08-18 19:15:43,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:15:43,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:15:43,835 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 19:15:43,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:15:43,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:15:43,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:15:43,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:15:43,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:15:43,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:15:43,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:15:43,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:15:43,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:15:43,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:15:43,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 19:15:43,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:15:43,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 19:15:43,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:15:43,876 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 19:15:43,877 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1864831292] [2020-08-18 19:15:43,877 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:15:43,877 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 19:15:43,877 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898749271] [2020-08-18 19:15:43,879 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 19:15:43,880 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:15:43,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 19:15:43,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 19:15:43,880 INFO L87 Difference]: Start difference. First operand 123 states and 145 transitions. Second operand 4 states. [2020-08-18 19:15:44,296 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:15:45,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:15:45,087 INFO L93 Difference]: Finished difference Result 220 states and 269 transitions. [2020-08-18 19:15:45,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 19:15:45,088 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-18 19:15:45,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:15:45,092 INFO L225 Difference]: With dead ends: 220 [2020-08-18 19:15:45,093 INFO L226 Difference]: Without dead ends: 139 [2020-08-18 19:15:45,094 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-18 19:15:45,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-08-18 19:15:45,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 114. [2020-08-18 19:15:45,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-08-18 19:15:45,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 133 transitions. [2020-08-18 19:15:45,133 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 133 transitions. Word has length 47 [2020-08-18 19:15:45,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:15:45,134 INFO L479 AbstractCegarLoop]: Abstraction has 114 states and 133 transitions. [2020-08-18 19:15:45,134 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 19:15:45,134 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 133 transitions. [2020-08-18 19:15:45,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-18 19:15:45,136 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:15:45,136 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 19:15:45,137 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 19:15:45,137 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:15:45,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:15:45,137 INFO L82 PathProgramCache]: Analyzing trace with hash 325618258, now seen corresponding path program 1 times [2020-08-18 19:15:45,137 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:15:45,138 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1931179138] [2020-08-18 19:15:45,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:15:45,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:15:45,450 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 19:15:45,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:15:45,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:15:45,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:15:45,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:15:45,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:15:45,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:15:45,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:15:45,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:15:45,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:15:45,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:15:45,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 19:15:45,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:15:45,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 19:15:45,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:15:45,539 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 19:15:45,539 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1931179138] [2020-08-18 19:15:45,539 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:15:45,540 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 19:15:45,540 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523321056] [2020-08-18 19:15:45,541 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 19:15:45,541 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:15:45,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 19:15:45,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 19:15:45,541 INFO L87 Difference]: Start difference. First operand 114 states and 133 transitions. Second operand 8 states. [2020-08-18 19:15:45,870 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 19:15:46,185 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 19:15:46,452 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 19:15:46,684 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 19:15:47,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:15:47,760 INFO L93 Difference]: Finished difference Result 229 states and 283 transitions. [2020-08-18 19:15:47,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 19:15:47,764 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-08-18 19:15:47,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:15:47,769 INFO L225 Difference]: With dead ends: 229 [2020-08-18 19:15:47,769 INFO L226 Difference]: Without dead ends: 139 [2020-08-18 19:15:47,774 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-18 19:15:47,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-08-18 19:15:47,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 114. [2020-08-18 19:15:47,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-08-18 19:15:47,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 132 transitions. [2020-08-18 19:15:47,817 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 132 transitions. Word has length 51 [2020-08-18 19:15:47,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:15:47,818 INFO L479 AbstractCegarLoop]: Abstraction has 114 states and 132 transitions. [2020-08-18 19:15:47,818 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 19:15:47,818 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 132 transitions. [2020-08-18 19:15:47,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-08-18 19:15:47,821 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:15:47,821 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 19:15:47,821 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 19:15:47,821 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:15:47,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:15:47,822 INFO L82 PathProgramCache]: Analyzing trace with hash -1759847866, now seen corresponding path program 1 times [2020-08-18 19:15:47,822 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:15:47,822 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [382533203] [2020-08-18 19:15:47,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:15:47,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:15:48,118 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 19:15:48,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:15:48,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:15:48,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:15:48,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:15:48,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:15:48,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:15:48,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:15:48,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:15:48,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:15:48,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:15:48,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-18 19:15:48,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:15:48,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:15:48,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:15:48,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:15:48,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:15:48,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 19:15:48,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:15:48,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-18 19:15:48,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:15:48,232 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 19:15:48,232 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [382533203] [2020-08-18 19:15:48,232 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:15:48,233 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 19:15:48,233 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797759850] [2020-08-18 19:15:48,234 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 19:15:48,234 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:15:48,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 19:15:48,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-18 19:15:48,235 INFO L87 Difference]: Start difference. First operand 114 states and 132 transitions. Second operand 6 states. [2020-08-18 19:15:48,596 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 19:15:49,733 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:15:50,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:15:50,361 INFO L93 Difference]: Finished difference Result 321 states and 399 transitions. [2020-08-18 19:15:50,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 19:15:50,364 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 64 [2020-08-18 19:15:50,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:15:50,368 INFO L225 Difference]: With dead ends: 321 [2020-08-18 19:15:50,369 INFO L226 Difference]: Without dead ends: 231 [2020-08-18 19:15:50,370 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-08-18 19:15:50,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2020-08-18 19:15:50,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 190. [2020-08-18 19:15:50,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2020-08-18 19:15:50,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 217 transitions. [2020-08-18 19:15:50,418 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 217 transitions. Word has length 64 [2020-08-18 19:15:50,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:15:50,419 INFO L479 AbstractCegarLoop]: Abstraction has 190 states and 217 transitions. [2020-08-18 19:15:50,419 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 19:15:50,419 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 217 transitions. [2020-08-18 19:15:50,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-08-18 19:15:50,421 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:15:50,422 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 19:15:50,422 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 19:15:50,422 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:15:50,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:15:50,423 INFO L82 PathProgramCache]: Analyzing trace with hash -1017680522, now seen corresponding path program 1 times [2020-08-18 19:15:50,423 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:15:50,423 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1174258514] [2020-08-18 19:15:50,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:15:50,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:15:50,742 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 19:15:50,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:15:50,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:15:50,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:15:50,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:15:50,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:15:50,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:15:50,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:15:50,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:15:50,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:15:50,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:15:50,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-18 19:15:50,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:15:50,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:15:50,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:15:50,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:15:50,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:15:50,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:15:50,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:15:50,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 19:15:50,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:15:50,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-18 19:15:50,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:15:50,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-18 19:15:50,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:15:50,827 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 19:15:50,827 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1174258514] [2020-08-18 19:15:50,828 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:15:50,828 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 19:15:50,828 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427146822] [2020-08-18 19:15:50,828 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 19:15:50,829 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:15:50,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 19:15:50,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 19:15:50,829 INFO L87 Difference]: Start difference. First operand 190 states and 217 transitions. Second operand 8 states. [2020-08-18 19:15:51,188 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 19:15:52,240 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 19:15:52,505 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 19:15:52,746 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 19:15:52,962 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 19:15:53,274 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:15:54,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:15:54,231 INFO L93 Difference]: Finished difference Result 565 states and 701 transitions. [2020-08-18 19:15:54,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 19:15:54,237 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 78 [2020-08-18 19:15:54,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:15:54,241 INFO L225 Difference]: With dead ends: 565 [2020-08-18 19:15:54,241 INFO L226 Difference]: Without dead ends: 399 [2020-08-18 19:15:54,243 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-08-18 19:15:54,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2020-08-18 19:15:54,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 335. [2020-08-18 19:15:54,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 335 states. [2020-08-18 19:15:54,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 384 transitions. [2020-08-18 19:15:54,327 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 384 transitions. Word has length 78 [2020-08-18 19:15:54,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:15:54,327 INFO L479 AbstractCegarLoop]: Abstraction has 335 states and 384 transitions. [2020-08-18 19:15:54,327 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 19:15:54,327 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 384 transitions. [2020-08-18 19:15:54,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-08-18 19:15:54,330 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:15:54,330 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 19:15:54,330 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 19:15:54,330 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:15:54,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:15:54,331 INFO L82 PathProgramCache]: Analyzing trace with hash 1476513266, now seen corresponding path program 1 times [2020-08-18 19:15:54,331 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:15:54,331 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1860804488] [2020-08-18 19:15:54,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:15:54,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:15:54,620 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 19:15:54,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:15:54,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:15:54,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:15:54,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:15:54,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:15:54,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:15:54,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:15:54,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:15:54,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:15:54,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:15:54,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 19:15:54,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:15:54,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 19:15:54,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:15:54,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:15:54,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:15:54,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:15:54,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:15:54,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:15:54,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:15:54,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 19:15:54,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:15:54,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-08-18 19:15:54,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:15:54,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-18 19:15:54,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:15:54,743 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 19:15:54,743 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1860804488] [2020-08-18 19:15:54,744 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:15:54,744 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 19:15:54,744 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960629463] [2020-08-18 19:15:54,745 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 19:15:54,745 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:15:54,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 19:15:54,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 19:15:54,746 INFO L87 Difference]: Start difference. First operand 335 states and 384 transitions. Second operand 9 states. [2020-08-18 19:15:55,105 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 19:15:56,126 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 19:15:56,384 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 19:15:56,645 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 19:15:56,910 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 19:15:57,168 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:15:58,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:15:58,127 INFO L93 Difference]: Finished difference Result 438 states and 552 transitions. [2020-08-18 19:15:58,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-18 19:15:58,128 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 82 [2020-08-18 19:15:58,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:15:58,133 INFO L225 Difference]: With dead ends: 438 [2020-08-18 19:15:58,133 INFO L226 Difference]: Without dead ends: 435 [2020-08-18 19:15:58,134 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-18 19:15:58,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2020-08-18 19:15:58,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 335. [2020-08-18 19:15:58,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 335 states. [2020-08-18 19:15:58,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 383 transitions. [2020-08-18 19:15:58,222 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 383 transitions. Word has length 82 [2020-08-18 19:15:58,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:15:58,222 INFO L479 AbstractCegarLoop]: Abstraction has 335 states and 383 transitions. [2020-08-18 19:15:58,222 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 19:15:58,223 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 383 transitions. [2020-08-18 19:15:58,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-18 19:15:58,226 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:15:58,227 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 19:15:58,228 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 19:15:58,228 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:15:58,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:15:58,228 INFO L82 PathProgramCache]: Analyzing trace with hash 1573868364, now seen corresponding path program 1 times [2020-08-18 19:15:58,229 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:15:58,229 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1809352239] [2020-08-18 19:15:58,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:15:58,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:15:58,455 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 19:15:58,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:15:58,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:15:58,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:15:58,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:15:58,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:15:58,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:15:58,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:15:58,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:15:58,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:15:58,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:15:58,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 19:15:58,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:15:58,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 19:15:58,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:15:58,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:15:58,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:15:58,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:15:58,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:15:58,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:15:58,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:15:58,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 19:15:58,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:15:58,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-18 19:15:58,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:15:58,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-18 19:15:58,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:15:58,616 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 19:15:58,617 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1809352239] [2020-08-18 19:15:58,617 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:15:58,617 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 19:15:58,617 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142740074] [2020-08-18 19:15:58,618 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 19:15:58,619 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:15:58,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 19:15:58,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 19:15:58,624 INFO L87 Difference]: Start difference. First operand 335 states and 383 transitions. Second operand 9 states. [2020-08-18 19:15:59,469 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 19:15:59,730 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 19:15:59,969 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:16:00,201 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:16:01,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:16:01,152 INFO L93 Difference]: Finished difference Result 750 states and 926 transitions. [2020-08-18 19:16:01,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 19:16:01,153 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 83 [2020-08-18 19:16:01,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:16:01,157 INFO L225 Difference]: With dead ends: 750 [2020-08-18 19:16:01,157 INFO L226 Difference]: Without dead ends: 439 [2020-08-18 19:16:01,159 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-18 19:16:01,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2020-08-18 19:16:01,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 345. [2020-08-18 19:16:01,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 345 states. [2020-08-18 19:16:01,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 393 transitions. [2020-08-18 19:16:01,227 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 393 transitions. Word has length 83 [2020-08-18 19:16:01,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:16:01,227 INFO L479 AbstractCegarLoop]: Abstraction has 345 states and 393 transitions. [2020-08-18 19:16:01,227 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 19:16:01,228 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 393 transitions. [2020-08-18 19:16:01,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-18 19:16:01,229 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:16:01,229 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 19:16:01,229 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 19:16:01,230 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:16:01,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:16:01,230 INFO L82 PathProgramCache]: Analyzing trace with hash 1596500618, now seen corresponding path program 1 times [2020-08-18 19:16:01,230 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:16:01,230 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [693386552] [2020-08-18 19:16:01,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:16:01,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:01,507 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 19:16:01,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:16:01,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:01,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:16:01,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:01,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:16:01,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:01,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:16:01,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:01,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:16:01,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:01,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 19:16:01,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:01,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 19:16:01,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:01,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:16:01,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:01,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:16:01,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:01,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:16:01,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:01,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 19:16:01,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:01,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-18 19:16:01,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:01,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-18 19:16:01,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:01,629 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 19:16:01,629 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [693386552] [2020-08-18 19:16:01,629 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:16:01,630 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-18 19:16:01,630 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464146102] [2020-08-18 19:16:01,630 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 19:16:01,631 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:16:01,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 19:16:01,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-18 19:16:01,631 INFO L87 Difference]: Start difference. First operand 345 states and 393 transitions. Second operand 11 states. [2020-08-18 19:16:02,116 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:16:02,349 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:16:02,574 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:16:03,135 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:16:03,401 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:16:03,645 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:16:04,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:16:04,694 INFO L93 Difference]: Finished difference Result 774 states and 966 transitions. [2020-08-18 19:16:04,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 19:16:04,695 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 83 [2020-08-18 19:16:04,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:16:04,699 INFO L225 Difference]: With dead ends: 774 [2020-08-18 19:16:04,699 INFO L226 Difference]: Without dead ends: 453 [2020-08-18 19:16:04,701 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-18 19:16:04,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states. [2020-08-18 19:16:04,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 353. [2020-08-18 19:16:04,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 353 states. [2020-08-18 19:16:04,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 401 transitions. [2020-08-18 19:16:04,774 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 401 transitions. Word has length 83 [2020-08-18 19:16:04,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:16:04,774 INFO L479 AbstractCegarLoop]: Abstraction has 353 states and 401 transitions. [2020-08-18 19:16:04,774 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 19:16:04,774 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 401 transitions. [2020-08-18 19:16:04,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-18 19:16:04,776 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:16:04,776 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 19:16:04,776 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 19:16:04,776 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:16:04,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:16:04,777 INFO L82 PathProgramCache]: Analyzing trace with hash -1672974679, now seen corresponding path program 1 times [2020-08-18 19:16:04,777 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:16:04,777 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [834081877] [2020-08-18 19:16:04,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:16:04,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:05,049 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 19:16:05,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:16:05,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:05,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:16:05,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:05,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:16:05,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:05,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:16:05,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:05,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:16:05,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:05,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 19:16:05,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:05,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 19:16:05,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:05,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:16:05,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:05,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:16:05,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:05,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:16:05,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:05,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 19:16:05,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:05,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-18 19:16:05,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:05,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-18 19:16:05,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:05,176 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 19:16:05,177 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [834081877] [2020-08-18 19:16:05,177 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:16:05,177 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-18 19:16:05,178 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855280363] [2020-08-18 19:16:05,178 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 19:16:05,178 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:16:05,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 19:16:05,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-18 19:16:05,179 INFO L87 Difference]: Start difference. First operand 353 states and 401 transitions. Second operand 7 states. [2020-08-18 19:16:05,516 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 19:16:06,034 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 19:16:07,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:16:07,828 INFO L93 Difference]: Finished difference Result 1077 states and 1388 transitions. [2020-08-18 19:16:07,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-18 19:16:07,829 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 83 [2020-08-18 19:16:07,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:16:07,835 INFO L225 Difference]: With dead ends: 1077 [2020-08-18 19:16:07,835 INFO L226 Difference]: Without dead ends: 748 [2020-08-18 19:16:07,836 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 33 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-08-18 19:16:07,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 748 states. [2020-08-18 19:16:07,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 748 to 649. [2020-08-18 19:16:07,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 649 states. [2020-08-18 19:16:07,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 771 transitions. [2020-08-18 19:16:07,955 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 771 transitions. Word has length 83 [2020-08-18 19:16:07,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:16:07,955 INFO L479 AbstractCegarLoop]: Abstraction has 649 states and 771 transitions. [2020-08-18 19:16:07,955 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 19:16:07,955 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 771 transitions. [2020-08-18 19:16:07,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-08-18 19:16:07,957 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:16:07,957 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:16:07,958 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 19:16:07,958 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:16:07,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:16:07,958 INFO L82 PathProgramCache]: Analyzing trace with hash 1457224847, now seen corresponding path program 1 times [2020-08-18 19:16:07,958 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:16:07,959 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [941974482] [2020-08-18 19:16:07,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:16:08,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 19:16:08,009 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 19:16:08,009 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 19:16:08,013 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 19:16:08,037 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 07:16:08 BoogieIcfgContainer [2020-08-18 19:16:08,037 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 19:16:08,039 INFO L168 Benchmark]: Toolchain (without parser) took 28825.28 ms. Allocated memory was 148.4 MB in the beginning and 579.3 MB in the end (delta: 431.0 MB). Free memory was 104.0 MB in the beginning and 210.5 MB in the end (delta: -106.6 MB). Peak memory consumption was 324.4 MB. Max. memory is 7.1 GB. [2020-08-18 19:16:08,040 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 148.4 MB. Free memory was 122.9 MB in the beginning and 122.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-18 19:16:08,041 INFO L168 Benchmark]: CACSL2BoogieTranslator took 651.14 ms. Allocated memory was 148.4 MB in the beginning and 205.0 MB in the end (delta: 56.6 MB). Free memory was 103.7 MB in the beginning and 174.3 MB in the end (delta: -70.5 MB). Peak memory consumption was 25.7 MB. Max. memory is 7.1 GB. [2020-08-18 19:16:08,041 INFO L168 Benchmark]: Boogie Preprocessor took 111.69 ms. Allocated memory is still 205.0 MB. Free memory was 174.3 MB in the beginning and 170.1 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. [2020-08-18 19:16:08,042 INFO L168 Benchmark]: RCFGBuilder took 1217.92 ms. Allocated memory was 205.0 MB in the beginning and 235.9 MB in the end (delta: 30.9 MB). Free memory was 170.1 MB in the beginning and 196.8 MB in the end (delta: -26.6 MB). Peak memory consumption was 83.1 MB. Max. memory is 7.1 GB. [2020-08-18 19:16:08,043 INFO L168 Benchmark]: TraceAbstraction took 26838.80 ms. Allocated memory was 235.9 MB in the beginning and 579.3 MB in the end (delta: 343.4 MB). Free memory was 196.8 MB in the beginning and 210.5 MB in the end (delta: -13.7 MB). Peak memory consumption was 329.7 MB. Max. memory is 7.1 GB. [2020-08-18 19:16:08,046 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 148.4 MB. Free memory was 122.9 MB in the beginning and 122.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 651.14 ms. Allocated memory was 148.4 MB in the beginning and 205.0 MB in the end (delta: 56.6 MB). Free memory was 103.7 MB in the beginning and 174.3 MB in the end (delta: -70.5 MB). Peak memory consumption was 25.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 111.69 ms. Allocated memory is still 205.0 MB. Free memory was 174.3 MB in the beginning and 170.1 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1217.92 ms. Allocated memory was 205.0 MB in the beginning and 235.9 MB in the end (delta: 30.9 MB). Free memory was 170.1 MB in the beginning and 196.8 MB in the end (delta: -26.6 MB). Peak memory consumption was 83.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 26838.80 ms. Allocated memory was 235.9 MB in the beginning and 579.3 MB in the end (delta: 343.4 MB). Free memory was 196.8 MB in the beginning and 210.5 MB in the end (delta: -13.7 MB). Peak memory consumption was 329.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 543]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L209] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L406] int cleanupTimeShifts = 4; [L588] int pumpRunning = 0; [L589] int systemActive = 1; [L832] int waterLevel = 1; [L833] int methaneLevelCritical = 0; [L487] int retValue_acc ; [L488] int tmp ; [L492] FCALL select_helpers() [L493] FCALL select_features() [L494] CALL, EXPR valid_product() [L574] int retValue_acc ; [L577] retValue_acc = 1 [L578] return (retValue_acc); [L494] RET, EXPR valid_product() [L494] tmp = valid_product() [L496] COND TRUE \read(tmp) [L498] FCALL setup() [L499] CALL runTest() [L478] CALL test() [L767] int splverifierCounter ; [L768] int tmp ; [L769] int tmp___0 ; [L770] int tmp___1 ; [L771] int tmp___2 ; [L774] splverifierCounter = 0 [L776] COND TRUE 1 [L778] COND TRUE splverifierCounter < 4 [L784] tmp = __VERIFIER_nondet_int() [L786] COND TRUE \read(tmp) [L788] CALL waterRise() [L850] COND TRUE waterLevel < 2 [L851] waterLevel = waterLevel + 1 [L788] RET waterRise() [L794] tmp___0 = __VERIFIER_nondet_int() [L796] COND TRUE \read(tmp___0) [L798] CALL changeMethaneLevel() [L862] COND FALSE !(\read(methaneLevelCritical)) [L865] methaneLevelCritical = 1 [L798] RET changeMethaneLevel() [L804] tmp___2 = __VERIFIER_nondet_int() [L806] COND TRUE \read(tmp___2) [L819] CALL timeShift() [L595] COND FALSE !(\read(pumpRunning)) [L602] COND TRUE \read(systemActive) [L604] CALL processEnvironment() [L650] int tmp ; [L653] COND FALSE !(\read(pumpRunning)) [L668] CALL processEnvironment__wrappee__highWaterSensor() [L624] int tmp ; [L627] COND TRUE ! pumpRunning [L629] CALL, EXPR isHighWaterLevel() [L747] int retValue_acc ; [L748] int tmp ; [L749] int tmp___0 ; [L753] CALL, EXPR isHighWaterSensorDry() [L912] int retValue_acc ; [L915] COND FALSE !(waterLevel < 2) [L919] retValue_acc = 0 [L920] return (retValue_acc); [L753] RET, EXPR isHighWaterSensorDry() [L753] tmp = isHighWaterSensorDry() [L755] COND FALSE !(\read(tmp)) [L758] tmp___0 = 1 [L760] retValue_acc = tmp___0 [L761] return (retValue_acc); [L629] RET, EXPR isHighWaterLevel() [L629] tmp = isHighWaterLevel() [L631] COND TRUE \read(tmp) [L633] CALL activatePump() [L678] pumpRunning = 1 [L633] RET activatePump() [L668] RET processEnvironment__wrappee__highWaterSensor() [L604] RET processEnvironment() [L610] CALL __utac_acc__Specification1_spec__1() [L514] int tmp ; [L515] int tmp___0 ; [L519] CALL, EXPR isMethaneLevelCritical() [L871] int retValue_acc ; [L874] retValue_acc = methaneLevelCritical [L875] return (retValue_acc); [L519] RET, EXPR isMethaneLevelCritical() [L519] tmp = isMethaneLevelCritical() [L521] COND TRUE \read(tmp) [L523] CALL, EXPR isPumpRunning() [L702] int retValue_acc ; [L705] retValue_acc = pumpRunning [L706] return (retValue_acc); [L523] RET, EXPR isPumpRunning() [L523] tmp___0 = isPumpRunning() [L525] COND TRUE \read(tmp___0) [L527] CALL __automaton_fail() [L543] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 38 procedures, 225 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 26.7s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 21.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1006 SDtfs, 1711 SDslu, 941 SDs, 0 SdLazy, 4729 SolverSat, 1067 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 11.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 316 GetRequests, 219 SyntacticMatches, 4 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 9.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=649occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 9 MinimizatonAttempts, 580 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.3s InterpolantComputationTime, 704 NumberOfCodeBlocks, 704 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 608 ConstructedInterpolants, 0 QuantifiedInterpolants, 186785 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...