/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.1 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product41.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 03:20:25,007 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 03:20:25,010 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 03:20:25,051 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 03:20:25,051 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 03:20:25,060 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 03:20:25,062 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 03:20:25,065 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 03:20:25,068 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 03:20:25,070 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 03:20:25,071 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 03:20:25,072 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 03:20:25,072 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 03:20:25,075 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 03:20:25,077 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 03:20:25,079 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 03:20:25,080 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 03:20:25,081 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 03:20:25,083 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 03:20:25,091 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 03:20:25,093 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 03:20:25,094 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 03:20:25,095 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 03:20:25,095 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 03:20:25,107 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 03:20:25,109 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 03:20:25,109 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 03:20:25,110 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 03:20:25,110 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 03:20:25,117 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 03:20:25,117 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 03:20:25,118 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 03:20:25,118 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 03:20:25,123 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 03:20:25,124 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 03:20:25,124 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 03:20:25,125 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 03:20:25,125 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 03:20:25,125 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 03:20:25,126 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 03:20:25,127 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 03:20:25,128 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-19 03:20:25,166 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 03:20:25,166 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 03:20:25,168 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 03:20:25,169 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 03:20:25,169 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 03:20:25,169 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 03:20:25,169 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 03:20:25,169 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 03:20:25,170 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 03:20:25,170 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 03:20:25,171 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 03:20:25,171 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 03:20:25,171 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 03:20:25,172 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 03:20:25,172 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 03:20:25,172 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 03:20:25,172 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 03:20:25,172 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 03:20:25,173 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 03:20:25,173 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 03:20:25,173 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 03:20:25,173 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 03:20:25,173 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 03:20:25,173 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 03:20:25,174 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 03:20:25,174 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 03:20:25,174 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 03:20:25,174 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 03:20:25,174 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 03:20:25,175 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1; [2020-08-19 03:20:25,503 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 03:20:25,514 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 03:20:25,519 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 03:20:25,522 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 03:20:25,522 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 03:20:25,523 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product41.cil.c [2020-08-19 03:20:25,575 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/433fe6d02/a7ba15465f8640a7aa7687f7aa4ef3de/FLAG060de6034 [2020-08-19 03:20:26,129 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 03:20:26,129 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product41.cil.c [2020-08-19 03:20:26,144 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/433fe6d02/a7ba15465f8640a7aa7687f7aa4ef3de/FLAG060de6034 [2020-08-19 03:20:26,413 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/433fe6d02/a7ba15465f8640a7aa7687f7aa4ef3de [2020-08-19 03:20:26,421 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 03:20:26,423 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 03:20:26,424 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 03:20:26,425 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 03:20:26,429 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 03:20:26,430 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 03:20:26" (1/1) ... [2020-08-19 03:20:26,433 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7845d484 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:20:26, skipping insertion in model container [2020-08-19 03:20:26,433 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 03:20:26" (1/1) ... [2020-08-19 03:20:26,440 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 03:20:26,501 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 03:20:26,911 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 03:20:26,929 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 03:20:27,009 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 03:20:27,046 INFO L208 MainTranslator]: Completed translation [2020-08-19 03:20:27,046 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:20:27 WrapperNode [2020-08-19 03:20:27,047 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 03:20:27,047 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 03:20:27,048 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 03:20:27,048 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 03:20:27,062 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:20:27" (1/1) ... [2020-08-19 03:20:27,062 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:20:27" (1/1) ... [2020-08-19 03:20:27,093 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:20:27" (1/1) ... [2020-08-19 03:20:27,094 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:20:27" (1/1) ... [2020-08-19 03:20:27,128 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:20:27" (1/1) ... [2020-08-19 03:20:27,142 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:20:27" (1/1) ... [2020-08-19 03:20:27,151 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:20:27" (1/1) ... [2020-08-19 03:20:27,168 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 03:20:27,168 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 03:20:27,168 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 03:20:27,169 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 03:20:27,172 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:20:27" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 03:20:27,249 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 03:20:27,250 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 03:20:27,250 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-19 03:20:27,251 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-19 03:20:27,251 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-19 03:20:27,251 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-19 03:20:27,251 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-19 03:20:27,252 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-19 03:20:27,252 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-19 03:20:27,253 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-19 03:20:27,253 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-19 03:20:27,253 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-19 03:20:27,253 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-19 03:20:27,253 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-19 03:20:27,253 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-19 03:20:27,254 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-19 03:20:27,255 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-19 03:20:27,255 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-19 03:20:27,255 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-19 03:20:27,255 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-19 03:20:27,255 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-08-19 03:20:27,255 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-19 03:20:27,255 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-19 03:20:27,256 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-19 03:20:27,256 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-19 03:20:27,257 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-19 03:20:27,257 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-19 03:20:27,257 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-19 03:20:27,257 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-19 03:20:27,257 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-19 03:20:27,258 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-19 03:20:27,258 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 03:20:27,258 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-19 03:20:27,258 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-19 03:20:27,258 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-19 03:20:27,258 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-19 03:20:27,259 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-19 03:20:27,259 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-08-19 03:20:27,259 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 03:20:27,259 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 03:20:27,259 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-19 03:20:27,259 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-19 03:20:27,259 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 03:20:27,260 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 03:20:27,260 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-19 03:20:27,260 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 03:20:27,260 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 03:20:27,260 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 03:20:27,260 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 03:20:27,260 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-19 03:20:27,261 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 03:20:27,261 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-19 03:20:27,261 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-19 03:20:27,261 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 03:20:27,262 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-19 03:20:27,262 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-19 03:20:27,262 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 03:20:27,262 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-19 03:20:27,262 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-19 03:20:27,263 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-19 03:20:27,263 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-19 03:20:27,263 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-19 03:20:27,263 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-19 03:20:27,263 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-19 03:20:27,263 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-19 03:20:27,263 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-19 03:20:27,264 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-19 03:20:27,264 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-19 03:20:27,264 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-19 03:20:27,264 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-19 03:20:27,264 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-19 03:20:27,265 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-19 03:20:27,265 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-08-19 03:20:27,266 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-19 03:20:27,266 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-19 03:20:27,266 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-19 03:20:27,267 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-08-19 03:20:27,267 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-19 03:20:27,268 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-19 03:20:27,268 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-19 03:20:27,268 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-19 03:20:27,268 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-19 03:20:27,269 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-19 03:20:27,269 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-19 03:20:27,269 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 03:20:27,269 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-19 03:20:27,270 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-19 03:20:27,270 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 03:20:27,270 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-19 03:20:27,270 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 03:20:28,271 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 03:20:28,271 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-19 03:20:28,276 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 03:20:28 BoogieIcfgContainer [2020-08-19 03:20:28,276 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 03:20:28,278 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 03:20:28,278 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 03:20:28,281 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 03:20:28,282 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 03:20:26" (1/3) ... [2020-08-19 03:20:28,282 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45dd6d73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 03:20:28, skipping insertion in model container [2020-08-19 03:20:28,283 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:20:27" (2/3) ... [2020-08-19 03:20:28,283 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45dd6d73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 03:20:28, skipping insertion in model container [2020-08-19 03:20:28,283 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 03:20:28" (3/3) ... [2020-08-19 03:20:28,285 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product41.cil.c [2020-08-19 03:20:28,296 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 03:20:28,304 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 03:20:28,319 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 03:20:28,345 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 03:20:28,345 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 03:20:28,346 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 03:20:28,346 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 03:20:28,346 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 03:20:28,346 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 03:20:28,346 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 03:20:28,347 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 03:20:28,372 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states. [2020-08-19 03:20:28,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-19 03:20:28,381 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:20:28,382 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] [2020-08-19 03:20:28,383 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:20:28,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:20:28,388 INFO L82 PathProgramCache]: Analyzing trace with hash -1904787813, now seen corresponding path program 1 times [2020-08-19 03:20:28,395 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:20:28,395 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1287549110] [2020-08-19 03:20:28,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:20:28,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:28,998 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 03:20:29,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:20:29,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:29,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:20:29,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:29,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:20:29,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:29,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:20:29,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:29,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:20:29,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:29,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 03:20:29,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:29,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 03:20:29,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:29,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 03:20:29,129 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1287549110] [2020-08-19 03:20:29,131 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:20:29,137 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 03:20:29,138 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993981712] [2020-08-19 03:20:29,145 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 03:20:29,145 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:20:29,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 03:20:29,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 03:20:29,163 INFO L87 Difference]: Start difference. First operand 160 states. Second operand 3 states. [2020-08-19 03:20:30,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:20:30,261 INFO L93 Difference]: Finished difference Result 275 states and 361 transitions. [2020-08-19 03:20:30,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 03:20:30,264 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-19 03:20:30,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:20:30,279 INFO L225 Difference]: With dead ends: 275 [2020-08-19 03:20:30,279 INFO L226 Difference]: Without dead ends: 149 [2020-08-19 03:20:30,284 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 03:20:30,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-08-19 03:20:30,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 117. [2020-08-19 03:20:30,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-08-19 03:20:30,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 137 transitions. [2020-08-19 03:20:30,372 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 137 transitions. Word has length 46 [2020-08-19 03:20:30,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:20:30,373 INFO L479 AbstractCegarLoop]: Abstraction has 117 states and 137 transitions. [2020-08-19 03:20:30,373 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 03:20:30,373 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 137 transitions. [2020-08-19 03:20:30,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-19 03:20:30,377 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:20:30,377 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] [2020-08-19 03:20:30,378 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 03:20:30,378 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:20:30,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:20:30,378 INFO L82 PathProgramCache]: Analyzing trace with hash -8679295, now seen corresponding path program 1 times [2020-08-19 03:20:30,379 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:20:30,379 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1759119780] [2020-08-19 03:20:30,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:20:30,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:30,807 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 03:20:30,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:20:30,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:30,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:20:30,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:30,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:20:30,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:30,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:20:30,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:30,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:20:30,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:30,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 03:20:30,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:30,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 03:20:30,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:30,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 03:20:30,890 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1759119780] [2020-08-19 03:20:30,890 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:20:30,890 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 03:20:30,890 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517227942] [2020-08-19 03:20:30,892 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 03:20:30,893 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:20:30,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 03:20:30,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 03:20:30,894 INFO L87 Difference]: Start difference. First operand 117 states and 137 transitions. Second operand 4 states. [2020-08-19 03:20:31,288 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:20:31,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:20:31,987 INFO L93 Difference]: Finished difference Result 208 states and 252 transitions. [2020-08-19 03:20:31,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 03:20:31,988 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-19 03:20:31,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:20:31,991 INFO L225 Difference]: With dead ends: 208 [2020-08-19 03:20:31,991 INFO L226 Difference]: Without dead ends: 133 [2020-08-19 03:20:31,993 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 [2020-08-19 03:20:31,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-08-19 03:20:32,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 108. [2020-08-19 03:20:32,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-08-19 03:20:32,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 125 transitions. [2020-08-19 03:20:32,028 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 125 transitions. Word has length 47 [2020-08-19 03:20:32,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:20:32,028 INFO L479 AbstractCegarLoop]: Abstraction has 108 states and 125 transitions. [2020-08-19 03:20:32,028 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 03:20:32,028 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 125 transitions. [2020-08-19 03:20:32,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-19 03:20:32,030 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:20:32,031 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] [2020-08-19 03:20:32,031 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 03:20:32,031 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:20:32,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:20:32,031 INFO L82 PathProgramCache]: Analyzing trace with hash -1364944070, now seen corresponding path program 1 times [2020-08-19 03:20:32,032 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:20:32,032 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2133141670] [2020-08-19 03:20:32,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:20:32,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:32,348 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 03:20:32,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:20:32,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:32,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:20:32,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:32,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:20:32,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:32,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:20:32,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:32,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:20:32,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:32,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 03:20:32,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:32,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 03:20:32,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:32,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 03:20:32,459 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2133141670] [2020-08-19 03:20:32,459 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:20:32,459 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 03:20:32,460 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177286874] [2020-08-19 03:20:32,461 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 03:20:32,461 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:20:32,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 03:20:32,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-19 03:20:32,462 INFO L87 Difference]: Start difference. First operand 108 states and 125 transitions. Second operand 8 states. [2020-08-19 03:20:32,805 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 03:20:33,122 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 03:20:33,371 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 03:20:33,617 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 03:20:34,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:20:34,688 INFO L93 Difference]: Finished difference Result 217 states and 266 transitions. [2020-08-19 03:20:34,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-19 03:20:34,689 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-08-19 03:20:34,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:20:34,691 INFO L225 Difference]: With dead ends: 217 [2020-08-19 03:20:34,691 INFO L226 Difference]: Without dead ends: 133 [2020-08-19 03:20:34,692 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-19 03:20:34,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-08-19 03:20:34,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 108. [2020-08-19 03:20:34,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-08-19 03:20:34,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 124 transitions. [2020-08-19 03:20:34,724 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 124 transitions. Word has length 51 [2020-08-19 03:20:34,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:20:34,725 INFO L479 AbstractCegarLoop]: Abstraction has 108 states and 124 transitions. [2020-08-19 03:20:34,725 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 03:20:34,725 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 124 transitions. [2020-08-19 03:20:34,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-19 03:20:34,727 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:20:34,727 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] [2020-08-19 03:20:34,727 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 03:20:34,728 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:20:34,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:20:34,728 INFO L82 PathProgramCache]: Analyzing trace with hash -1317252167, now seen corresponding path program 1 times [2020-08-19 03:20:34,728 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:20:34,729 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1142095197] [2020-08-19 03:20:34,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:20:34,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:35,033 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 03:20:35,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:20:35,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:35,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:20:35,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:35,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:20:35,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:35,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:20:35,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:35,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:20:35,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:35,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-19 03:20:35,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:35,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:20:35,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:35,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-19 03:20:35,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:35,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-19 03:20:35,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:35,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 03:20:35,158 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1142095197] [2020-08-19 03:20:35,158 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:20:35,158 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 03:20:35,158 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318069511] [2020-08-19 03:20:35,160 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 03:20:35,161 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:20:35,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 03:20:35,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-19 03:20:35,162 INFO L87 Difference]: Start difference. First operand 108 states and 124 transitions. Second operand 6 states. [2020-08-19 03:20:35,470 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 03:20:36,470 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:20:36,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:20:36,961 INFO L93 Difference]: Finished difference Result 300 states and 370 transitions. [2020-08-19 03:20:36,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-19 03:20:36,961 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 59 [2020-08-19 03:20:36,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:20:36,964 INFO L225 Difference]: With dead ends: 300 [2020-08-19 03:20:36,965 INFO L226 Difference]: Without dead ends: 216 [2020-08-19 03:20:36,966 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-08-19 03:20:36,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-08-19 03:20:37,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 175. [2020-08-19 03:20:37,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2020-08-19 03:20:37,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 201 transitions. [2020-08-19 03:20:37,014 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 201 transitions. Word has length 59 [2020-08-19 03:20:37,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:20:37,015 INFO L479 AbstractCegarLoop]: Abstraction has 175 states and 201 transitions. [2020-08-19 03:20:37,015 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 03:20:37,015 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 201 transitions. [2020-08-19 03:20:37,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-08-19 03:20:37,018 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:20:37,018 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] [2020-08-19 03:20:37,018 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 03:20:37,018 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:20:37,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:20:37,019 INFO L82 PathProgramCache]: Analyzing trace with hash 19293366, now seen corresponding path program 1 times [2020-08-19 03:20:37,019 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:20:37,019 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [546711641] [2020-08-19 03:20:37,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:20:37,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:37,340 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 03:20:37,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:20:37,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:37,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:20:37,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:37,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:20:37,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:37,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:20:37,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:37,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:20:37,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:37,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-19 03:20:37,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:37,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:20:37,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:37,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:20:37,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:37,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 03:20:37,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:37,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-19 03:20:37,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:37,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-19 03:20:37,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:37,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 03:20:37,441 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [546711641] [2020-08-19 03:20:37,441 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:20:37,441 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 03:20:37,442 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15276540] [2020-08-19 03:20:37,443 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 03:20:37,444 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:20:37,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 03:20:37,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-19 03:20:37,444 INFO L87 Difference]: Start difference. First operand 175 states and 201 transitions. Second operand 8 states. [2020-08-19 03:20:37,766 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 03:20:38,666 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 03:20:38,956 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 03:20:39,427 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 03:20:39,654 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 03:20:39,944 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:20:40,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:20:40,615 INFO L93 Difference]: Finished difference Result 520 states and 648 transitions. [2020-08-19 03:20:40,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-19 03:20:40,617 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 73 [2020-08-19 03:20:40,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:20:40,622 INFO L225 Difference]: With dead ends: 520 [2020-08-19 03:20:40,622 INFO L226 Difference]: Without dead ends: 369 [2020-08-19 03:20:40,623 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-08-19 03:20:40,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2020-08-19 03:20:40,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 305. [2020-08-19 03:20:40,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 305 states. [2020-08-19 03:20:40,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 352 transitions. [2020-08-19 03:20:40,693 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 352 transitions. Word has length 73 [2020-08-19 03:20:40,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:20:40,694 INFO L479 AbstractCegarLoop]: Abstraction has 305 states and 352 transitions. [2020-08-19 03:20:40,694 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 03:20:40,694 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 352 transitions. [2020-08-19 03:20:40,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-08-19 03:20:40,696 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:20:40,696 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] [2020-08-19 03:20:40,696 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 03:20:40,697 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:20:40,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:20:40,697 INFO L82 PathProgramCache]: Analyzing trace with hash -989642822, now seen corresponding path program 1 times [2020-08-19 03:20:40,697 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:20:40,698 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1486220945] [2020-08-19 03:20:40,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:20:40,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:41,014 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 03:20:41,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:20:41,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:41,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:20:41,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:41,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:20:41,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:41,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:20:41,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:41,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:20:41,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:41,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 03:20:41,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:41,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 03:20:41,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:41,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:20:41,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:41,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:20:41,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:41,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 03:20:41,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:41,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-08-19 03:20:41,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:41,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-19 03:20:41,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:41,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 03:20:41,104 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1486220945] [2020-08-19 03:20:41,104 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:20:41,104 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 03:20:41,104 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378249378] [2020-08-19 03:20:41,105 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 03:20:41,105 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:20:41,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 03:20:41,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 03:20:41,106 INFO L87 Difference]: Start difference. First operand 305 states and 352 transitions. Second operand 9 states. [2020-08-19 03:20:41,502 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 03:20:42,558 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 03:20:42,859 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:20:43,602 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 03:20:43,830 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 03:20:44,081 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 03:20:44,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:20:44,249 INFO L93 Difference]: Finished difference Result 408 states and 516 transitions. [2020-08-19 03:20:44,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-19 03:20:44,250 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 77 [2020-08-19 03:20:44,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:20:44,253 INFO L225 Difference]: With dead ends: 408 [2020-08-19 03:20:44,253 INFO L226 Difference]: Without dead ends: 405 [2020-08-19 03:20:44,254 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-19 03:20:44,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2020-08-19 03:20:44,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 305. [2020-08-19 03:20:44,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 305 states. [2020-08-19 03:20:44,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 351 transitions. [2020-08-19 03:20:44,317 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 351 transitions. Word has length 77 [2020-08-19 03:20:44,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:20:44,318 INFO L479 AbstractCegarLoop]: Abstraction has 305 states and 351 transitions. [2020-08-19 03:20:44,318 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 03:20:44,318 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 351 transitions. [2020-08-19 03:20:44,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-19 03:20:44,321 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:20:44,321 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:20:44,321 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 03:20:44,321 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:20:44,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:20:44,322 INFO L82 PathProgramCache]: Analyzing trace with hash 636453553, now seen corresponding path program 1 times [2020-08-19 03:20:44,322 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:20:44,322 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1693849385] [2020-08-19 03:20:44,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:20:44,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:44,589 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 03:20:44,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:20:44,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:44,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:20:44,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:44,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:20:44,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:44,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:20:44,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:44,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:20:44,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:44,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 03:20:44,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:44,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 03:20:44,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:44,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:20:44,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:44,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:20:44,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:44,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 03:20:44,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:44,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:20:44,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:44,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:20:44,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:44,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:20:44,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:44,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-19 03:20:44,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:44,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-19 03:20:44,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:44,714 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 03:20:44,714 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1693849385] [2020-08-19 03:20:44,714 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:20:44,715 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 03:20:44,715 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773100313] [2020-08-19 03:20:44,715 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 03:20:44,716 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:20:44,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 03:20:44,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 03:20:44,716 INFO L87 Difference]: Start difference. First operand 305 states and 351 transitions. Second operand 9 states. [2020-08-19 03:20:45,803 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 03:20:46,049 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 03:20:46,319 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:20:46,566 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:20:47,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:20:47,465 INFO L93 Difference]: Finished difference Result 694 states and 873 transitions. [2020-08-19 03:20:47,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-19 03:20:47,465 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 93 [2020-08-19 03:20:47,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:20:47,469 INFO L225 Difference]: With dead ends: 694 [2020-08-19 03:20:47,469 INFO L226 Difference]: Without dead ends: 413 [2020-08-19 03:20:47,471 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-19 03:20:47,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2020-08-19 03:20:47,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 315. [2020-08-19 03:20:47,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 315 states. [2020-08-19 03:20:47,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 361 transitions. [2020-08-19 03:20:47,538 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 361 transitions. Word has length 93 [2020-08-19 03:20:47,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:20:47,538 INFO L479 AbstractCegarLoop]: Abstraction has 315 states and 361 transitions. [2020-08-19 03:20:47,538 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 03:20:47,538 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 361 transitions. [2020-08-19 03:20:47,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-19 03:20:47,540 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:20:47,541 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:20:47,541 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 03:20:47,541 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:20:47,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:20:47,542 INFO L82 PathProgramCache]: Analyzing trace with hash -260939725, now seen corresponding path program 1 times [2020-08-19 03:20:47,542 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:20:47,542 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1495967159] [2020-08-19 03:20:47,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:20:47,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:47,842 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 03:20:47,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:20:47,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:47,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:20:47,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:47,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:20:47,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:47,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:20:47,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:47,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:20:47,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:47,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 03:20:47,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:47,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 03:20:47,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:47,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:20:47,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:47,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:20:47,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:47,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 03:20:47,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:47,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:20:47,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:47,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:20:47,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:47,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:20:47,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:47,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-19 03:20:47,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:47,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-19 03:20:47,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:47,980 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 03:20:47,980 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1495967159] [2020-08-19 03:20:47,981 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:20:47,981 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-19 03:20:47,981 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278994841] [2020-08-19 03:20:47,982 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-19 03:20:47,982 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:20:47,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-19 03:20:47,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-19 03:20:47,983 INFO L87 Difference]: Start difference. First operand 315 states and 361 transitions. Second operand 11 states. [2020-08-19 03:20:48,637 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:20:48,882 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:20:49,116 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:20:49,682 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:20:49,955 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:20:50,207 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:20:51,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:20:51,164 INFO L93 Difference]: Finished difference Result 714 states and 895 transitions. [2020-08-19 03:20:51,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-19 03:20:51,166 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 93 [2020-08-19 03:20:51,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:20:51,170 INFO L225 Difference]: With dead ends: 714 [2020-08-19 03:20:51,170 INFO L226 Difference]: Without dead ends: 423 [2020-08-19 03:20:51,172 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-19 03:20:51,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2020-08-19 03:20:51,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 323. [2020-08-19 03:20:51,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2020-08-19 03:20:51,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 369 transitions. [2020-08-19 03:20:51,235 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 369 transitions. Word has length 93 [2020-08-19 03:20:51,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:20:51,236 INFO L479 AbstractCegarLoop]: Abstraction has 323 states and 369 transitions. [2020-08-19 03:20:51,236 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-19 03:20:51,236 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 369 transitions. [2020-08-19 03:20:51,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-19 03:20:51,238 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:20:51,238 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:20:51,238 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 03:20:51,238 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:20:51,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:20:51,239 INFO L82 PathProgramCache]: Analyzing trace with hash 1709999732, now seen corresponding path program 1 times [2020-08-19 03:20:51,239 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:20:51,239 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [291872433] [2020-08-19 03:20:51,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:20:51,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:51,473 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 03:20:51,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:20:51,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:51,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:20:51,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:51,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:20:51,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:51,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:20:51,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:51,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:20:51,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:51,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 03:20:51,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:51,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 03:20:51,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:51,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:20:51,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:51,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:20:51,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:51,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 03:20:51,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:51,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:20:51,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:51,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:20:51,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:51,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:20:51,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:51,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-19 03:20:51,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:51,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-19 03:20:51,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:51,608 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 03:20:51,608 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [291872433] [2020-08-19 03:20:51,609 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:20:51,609 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-19 03:20:51,609 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000932844] [2020-08-19 03:20:51,609 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-19 03:20:51,610 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:20:51,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-19 03:20:51,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-19 03:20:51,610 INFO L87 Difference]: Start difference. First operand 323 states and 369 transitions. Second operand 7 states. [2020-08-19 03:20:51,962 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 03:20:52,658 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 03:20:54,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:20:54,473 INFO L93 Difference]: Finished difference Result 997 states and 1285 transitions. [2020-08-19 03:20:54,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-19 03:20:54,474 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 93 [2020-08-19 03:20:54,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:20:54,480 INFO L225 Difference]: With dead ends: 997 [2020-08-19 03:20:54,480 INFO L226 Difference]: Without dead ends: 698 [2020-08-19 03:20:54,482 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 37 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-08-19 03:20:54,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 698 states. [2020-08-19 03:20:54,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 698 to 599. [2020-08-19 03:20:54,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 599 states. [2020-08-19 03:20:54,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 711 transitions. [2020-08-19 03:20:54,599 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 711 transitions. Word has length 93 [2020-08-19 03:20:54,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:20:54,600 INFO L479 AbstractCegarLoop]: Abstraction has 599 states and 711 transitions. [2020-08-19 03:20:54,600 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-19 03:20:54,600 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 711 transitions. [2020-08-19 03:20:54,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-08-19 03:20:54,605 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:20:54,605 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:20:54,606 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 03:20:54,606 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:20:54,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:20:54,606 INFO L82 PathProgramCache]: Analyzing trace with hash -1136093798, now seen corresponding path program 1 times [2020-08-19 03:20:54,606 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:20:54,607 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [862327719] [2020-08-19 03:20:54,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:20:54,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:54,930 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 03:20:54,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:20:54,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:54,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:20:54,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:54,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:20:54,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:54,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:20:54,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:54,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:20:54,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:54,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 03:20:54,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:55,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 03:20:55,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:55,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 03:20:55,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:55,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:20:55,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:55,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:20:55,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:55,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 03:20:55,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:55,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:20:55,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:55,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:20:55,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:55,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:20:55,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:55,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-19 03:20:55,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:55,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-19 03:20:55,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:55,306 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-19 03:20:55,307 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [862327719] [2020-08-19 03:20:55,307 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 03:20:55,307 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-08-19 03:20:55,307 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703459804] [2020-08-19 03:20:55,309 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-08-19 03:20:55,309 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:20:55,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-08-19 03:20:55,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2020-08-19 03:20:55,310 INFO L87 Difference]: Start difference. First operand 599 states and 711 transitions. Second operand 17 states. [2020-08-19 03:20:55,962 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 03:20:56,286 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 03:20:56,538 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 03:20:56,774 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 03:20:57,349 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 03:20:58,322 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 03:20:58,671 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 03:20:58,943 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 03:20:59,208 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 03:20:59,577 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 03:20:59,875 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 03:21:00,434 WARN L193 SmtUtils]: Spent 428.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 188 [2020-08-19 03:21:00,977 WARN L193 SmtUtils]: Spent 440.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 188 [2020-08-19 03:21:02,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:21:02,352 INFO L93 Difference]: Finished difference Result 1238 states and 1532 transitions. [2020-08-19 03:21:02,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-08-19 03:21:02,352 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 97 [2020-08-19 03:21:02,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:21:02,358 INFO L225 Difference]: With dead ends: 1238 [2020-08-19 03:21:02,358 INFO L226 Difference]: Without dead ends: 663 [2020-08-19 03:21:02,361 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=279, Invalid=1127, Unknown=0, NotChecked=0, Total=1406 [2020-08-19 03:21:02,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 663 states. [2020-08-19 03:21:02,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 663 to 567. [2020-08-19 03:21:02,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 567 states. [2020-08-19 03:21:02,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 660 transitions. [2020-08-19 03:21:02,518 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 660 transitions. Word has length 97 [2020-08-19 03:21:02,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:21:02,519 INFO L479 AbstractCegarLoop]: Abstraction has 567 states and 660 transitions. [2020-08-19 03:21:02,519 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-08-19 03:21:02,519 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 660 transitions. [2020-08-19 03:21:02,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-08-19 03:21:02,521 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:21:02,521 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:21:02,522 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-19 03:21:02,522 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:21:02,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:21:02,522 INFO L82 PathProgramCache]: Analyzing trace with hash 773081915, now seen corresponding path program 1 times [2020-08-19 03:21:02,523 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:21:02,523 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [570406112] [2020-08-19 03:21:02,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:21:02,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-19 03:21:02,579 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-19 03:21:02,579 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-19 03:21:02,583 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-19 03:21:02,610 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 03:21:02 BoogieIcfgContainer [2020-08-19 03:21:02,611 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 03:21:02,612 INFO L168 Benchmark]: Toolchain (without parser) took 36189.52 ms. Allocated memory was 143.1 MB in the beginning and 609.7 MB in the end (delta: 466.6 MB). Free memory was 105.7 MB in the beginning and 535.3 MB in the end (delta: -429.6 MB). Peak memory consumption was 37.0 MB. Max. memory is 7.1 GB. [2020-08-19 03:21:02,613 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 143.1 MB. Free memory was 124.7 MB in the beginning and 124.5 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-19 03:21:02,614 INFO L168 Benchmark]: CACSL2BoogieTranslator took 622.72 ms. Allocated memory was 143.1 MB in the beginning and 206.0 MB in the end (delta: 62.9 MB). Free memory was 105.5 MB in the beginning and 174.7 MB in the end (delta: -69.2 MB). Peak memory consumption was 26.4 MB. Max. memory is 7.1 GB. [2020-08-19 03:21:02,615 INFO L168 Benchmark]: Boogie Preprocessor took 120.47 ms. Allocated memory is still 206.0 MB. Free memory was 174.7 MB in the beginning and 170.3 MB in the end (delta: 4.4 MB). Peak memory consumption was 4.4 MB. Max. memory is 7.1 GB. [2020-08-19 03:21:02,615 INFO L168 Benchmark]: RCFGBuilder took 1108.21 ms. Allocated memory was 206.0 MB in the beginning and 231.7 MB in the end (delta: 25.7 MB). Free memory was 170.3 MB in the beginning and 187.5 MB in the end (delta: -17.2 MB). Peak memory consumption was 76.7 MB. Max. memory is 7.1 GB. [2020-08-19 03:21:02,616 INFO L168 Benchmark]: TraceAbstraction took 34332.98 ms. Allocated memory was 231.7 MB in the beginning and 609.7 MB in the end (delta: 378.0 MB). Free memory was 187.5 MB in the beginning and 535.3 MB in the end (delta: -347.8 MB). Peak memory consumption was 30.2 MB. Max. memory is 7.1 GB. [2020-08-19 03:21:02,619 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 143.1 MB. Free memory was 124.7 MB in the beginning and 124.5 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 622.72 ms. Allocated memory was 143.1 MB in the beginning and 206.0 MB in the end (delta: 62.9 MB). Free memory was 105.5 MB in the beginning and 174.7 MB in the end (delta: -69.2 MB). Peak memory consumption was 26.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 120.47 ms. Allocated memory is still 206.0 MB. Free memory was 174.7 MB in the beginning and 170.3 MB in the end (delta: 4.4 MB). Peak memory consumption was 4.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1108.21 ms. Allocated memory was 206.0 MB in the beginning and 231.7 MB in the end (delta: 25.7 MB). Free memory was 170.3 MB in the beginning and 187.5 MB in the end (delta: -17.2 MB). Peak memory consumption was 76.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 34332.98 ms. Allocated memory was 231.7 MB in the beginning and 609.7 MB in the end (delta: 378.0 MB). Free memory was 187.5 MB in the beginning and 535.3 MB in the end (delta: -347.8 MB). Peak memory consumption was 30.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 887]: 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; [L480] int waterLevel = 1; [L481] int methaneLevelCritical = 0; [L578] int pumpRunning = 0; [L579] int systemActive = 1; [L749] int cleanupTimeShifts = 4; [L825] int retValue_acc ; [L826] int tmp ; [L830] FCALL select_helpers() [L831] FCALL select_features() [L832] CALL, EXPR valid_product() [L874] int retValue_acc ; [L877] retValue_acc = 1 [L878] return (retValue_acc); [L832] RET, EXPR valid_product() [L832] tmp = valid_product() [L834] COND TRUE \read(tmp) [L836] FCALL setup() [L837] CALL runTest() [L816] CALL test() [L411] int splverifierCounter ; [L412] int tmp ; [L413] int tmp___0 ; [L414] int tmp___1 ; [L415] int tmp___2 ; [L418] splverifierCounter = 0 [L420] COND TRUE 1 [L422] COND TRUE splverifierCounter < 4 [L428] tmp = __VERIFIER_nondet_int() [L430] COND TRUE \read(tmp) [L432] CALL waterRise() [L498] COND TRUE waterLevel < 2 [L499] waterLevel = waterLevel + 1 [L432] RET waterRise() [L438] tmp___0 = __VERIFIER_nondet_int() [L440] COND FALSE !(\read(tmp___0)) [L448] tmp___2 = __VERIFIER_nondet_int() [L450] COND TRUE \read(tmp___2) [L463] CALL timeShift() [L586] COND FALSE !(\read(pumpRunning)) [L593] COND TRUE \read(systemActive) [L595] CALL processEnvironment() [L615] int tmp ; [L618] COND TRUE ! pumpRunning [L620] CALL, EXPR isHighWaterLevel() [L730] int retValue_acc ; [L731] int tmp ; [L732] int tmp___0 ; [L736] CALL, EXPR isHighWaterSensorDry() [L560] int retValue_acc ; [L563] COND FALSE !(waterLevel < 2) [L567] retValue_acc = 0 [L568] return (retValue_acc); [L736] RET, EXPR isHighWaterSensorDry() [L736] tmp = isHighWaterSensorDry() [L738] COND FALSE !(\read(tmp)) [L741] tmp___0 = 1 [L743] retValue_acc = tmp___0 [L744] return (retValue_acc); [L620] RET, EXPR isHighWaterLevel() [L620] tmp = isHighWaterLevel() [L622] COND TRUE \read(tmp) [L624] CALL activatePump() [L649] int tmp ; [L653] CALL, EXPR isMethaneAlarm() [L674] int retValue_acc ; [L678] CALL, EXPR isMethaneLevelCritical() [L519] int retValue_acc ; [L522] retValue_acc = methaneLevelCritical [L523] return (retValue_acc); [L678] RET, EXPR isMethaneLevelCritical() [L678] retValue_acc = isMethaneLevelCritical() [L680] return (retValue_acc); [L653] RET, EXPR isMethaneAlarm() [L653] tmp = isMethaneAlarm() [L655] COND FALSE !(\read(tmp)) [L659] CALL activatePump__wrappee__highWaterSensor() [L643] pumpRunning = 1 [L659] RET activatePump__wrappee__highWaterSensor() [L624] RET activatePump() [L595] RET processEnvironment() [L601] CALL __utac_acc__Specification1_spec__1() [L893] int tmp ; [L894] int tmp___0 ; [L898] CALL, EXPR isMethaneLevelCritical() [L519] int retValue_acc ; [L522] retValue_acc = methaneLevelCritical [L523] return (retValue_acc); [L898] RET, EXPR isMethaneLevelCritical() [L898] tmp = isMethaneLevelCritical() [L900] COND FALSE !(\read(tmp)) [L601] RET __utac_acc__Specification1_spec__1() [L463] RET timeShift() [L420] COND TRUE 1 [L422] COND TRUE splverifierCounter < 4 [L428] tmp = __VERIFIER_nondet_int() [L430] COND FALSE !(\read(tmp)) [L438] tmp___0 = __VERIFIER_nondet_int() [L440] COND TRUE \read(tmp___0) [L442] CALL changeMethaneLevel() [L510] COND FALSE !(\read(methaneLevelCritical)) [L513] methaneLevelCritical = 1 [L442] RET changeMethaneLevel() [L448] tmp___2 = __VERIFIER_nondet_int() [L450] COND TRUE \read(tmp___2) [L463] CALL timeShift() [L586] COND TRUE \read(pumpRunning) [L588] CALL lowerWaterLevel() [L486] COND TRUE waterLevel > 0 [L487] waterLevel = waterLevel - 1 [L588] RET lowerWaterLevel() [L593] COND TRUE \read(systemActive) [L595] CALL processEnvironment() [L615] int tmp ; [L618] COND FALSE !(! pumpRunning) [L633] FCALL processEnvironment__wrappee__base() [L595] RET processEnvironment() [L601] CALL __utac_acc__Specification1_spec__1() [L893] int tmp ; [L894] int tmp___0 ; [L898] CALL, EXPR isMethaneLevelCritical() [L519] int retValue_acc ; [L522] retValue_acc = methaneLevelCritical [L523] return (retValue_acc); [L898] RET, EXPR isMethaneLevelCritical() [L898] tmp = isMethaneLevelCritical() [L900] COND TRUE \read(tmp) [L902] CALL, EXPR isPumpRunning() [L685] int retValue_acc ; [L688] retValue_acc = pumpRunning [L689] return (retValue_acc); [L902] RET, EXPR isPumpRunning() [L902] tmp___0 = isPumpRunning() [L904] COND TRUE \read(tmp___0) [L906] CALL __automaton_fail() [L887] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 38 procedures, 222 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 34.2s, OverallIterations: 11, TraceHistogramMax: 3, AutomataDifference: 28.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1133 SDtfs, 2290 SDslu, 1326 SDs, 0 SdLazy, 6349 SolverSat, 1428 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 13.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 391 GetRequests, 259 SyntacticMatches, 4 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 420 ImplicationChecksByTransitivity, 14.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=599occurred 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: 0.7s AutomataMinimizationTime, 10 MinimizatonAttempts, 680 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 4.1s InterpolantComputationTime, 861 NumberOfCodeBlocks, 861 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 719 ConstructedInterpolants, 0 QuantifiedInterpolants, 229226 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 9 PerfectInterpolantSequences, 10/12 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...