/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=BIGGEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product38.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 17:39:02,218 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 17:39:02,222 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 17:39:02,261 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 17:39:02,261 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 17:39:02,263 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 17:39:02,268 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 17:39:02,270 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 17:39:02,276 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 17:39:02,277 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 17:39:02,278 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 17:39:02,279 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 17:39:02,279 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 17:39:02,280 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 17:39:02,281 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 17:39:02,282 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 17:39:02,283 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 17:39:02,283 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 17:39:02,285 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 17:39:02,287 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 17:39:02,288 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 17:39:02,289 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 17:39:02,290 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 17:39:02,291 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 17:39:02,293 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 17:39:02,293 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 17:39:02,294 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 17:39:02,294 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 17:39:02,295 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 17:39:02,296 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 17:39:02,296 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 17:39:02,297 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 17:39:02,297 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 17:39:02,298 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 17:39:02,299 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 17:39:02,299 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 17:39:02,300 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 17:39:02,300 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 17:39:02,300 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 17:39:02,301 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 17:39:02,302 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 17:39:02,303 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-18 17:39:02,324 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 17:39:02,325 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 17:39:02,326 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 17:39:02,326 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 17:39:02,327 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 17:39:02,327 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 17:39:02,327 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 17:39:02,327 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 17:39:02,327 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 17:39:02,328 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 17:39:02,328 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 17:39:02,328 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 17:39:02,328 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 17:39:02,328 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 17:39:02,329 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 17:39:02,329 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 17:39:02,329 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 17:39:02,329 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 17:39:02,329 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 17:39:02,330 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 17:39:02,330 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 17:39:02,330 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 17:39:02,330 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 17:39:02,330 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 17:39:02,331 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 17:39:02,331 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 17:39:02,331 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 17:39:02,331 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 17:39:02,331 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 17:39:02,332 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=BIGGEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=BIGGEST; [2020-08-18 17:39:02,701 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 17:39:02,716 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 17:39:02,726 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 17:39:02,727 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 17:39:02,728 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 17:39:02,729 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product38.cil.c [2020-08-18 17:39:02,802 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6718a1383/96c6531006134d979c8de3b65afdb137/FLAGd949af81c [2020-08-18 17:39:03,342 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 17:39:03,343 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product38.cil.c [2020-08-18 17:39:03,357 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6718a1383/96c6531006134d979c8de3b65afdb137/FLAGd949af81c [2020-08-18 17:39:03,644 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6718a1383/96c6531006134d979c8de3b65afdb137 [2020-08-18 17:39:03,652 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 17:39:03,653 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 17:39:03,654 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 17:39:03,655 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 17:39:03,658 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 17:39:03,659 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 05:39:03" (1/1) ... [2020-08-18 17:39:03,662 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@538d8bff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:39:03, skipping insertion in model container [2020-08-18 17:39:03,662 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 05:39:03" (1/1) ... [2020-08-18 17:39:03,670 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 17:39:03,714 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 17:39:04,004 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 17:39:04,017 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 17:39:04,217 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 17:39:04,249 INFO L208 MainTranslator]: Completed translation [2020-08-18 17:39:04,249 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:39:04 WrapperNode [2020-08-18 17:39:04,250 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 17:39:04,251 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 17:39:04,251 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 17:39:04,251 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 17:39:04,261 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:39:04" (1/1) ... [2020-08-18 17:39:04,262 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:39:04" (1/1) ... [2020-08-18 17:39:04,281 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:39:04" (1/1) ... [2020-08-18 17:39:04,282 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:39:04" (1/1) ... [2020-08-18 17:39:04,317 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:39:04" (1/1) ... [2020-08-18 17:39:04,328 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:39:04" (1/1) ... [2020-08-18 17:39:04,332 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:39:04" (1/1) ... [2020-08-18 17:39:04,340 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 17:39:04,341 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 17:39:04,341 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 17:39:04,341 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 17:39:04,342 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:39:04" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 17:39:04,408 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 17:39:04,409 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 17:39:04,409 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 17:39:04,409 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 17:39:04,409 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 17:39:04,409 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 17:39:04,409 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 17:39:04,410 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 17:39:04,410 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 17:39:04,410 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 17:39:04,410 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 17:39:04,410 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 17:39:04,411 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-08-18 17:39:04,411 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 17:39:04,411 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 17:39:04,411 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 17:39:04,411 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 17:39:04,411 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 17:39:04,412 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 17:39:04,412 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 17:39:04,412 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 17:39:04,412 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 17:39:04,412 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 17:39:04,412 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 17:39:04,412 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 17:39:04,413 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 17:39:04,413 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 17:39:04,413 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 17:39:04,413 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 17:39:04,413 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-18 17:39:04,414 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 17:39:04,414 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 17:39:04,414 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 17:39:04,414 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 17:39:04,414 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 17:39:04,414 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 17:39:04,414 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 17:39:04,415 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 17:39:04,415 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 17:39:04,415 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 17:39:04,415 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 17:39:04,415 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 17:39:04,415 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 17:39:04,416 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 17:39:04,416 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 17:39:04,416 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 17:39:04,416 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 17:39:04,416 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 17:39:04,416 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 17:39:04,417 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 17:39:04,417 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 17:39:04,417 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 17:39:04,417 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 17:39:04,417 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 17:39:04,417 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 17:39:04,417 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 17:39:04,418 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 17:39:04,418 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 17:39:04,418 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 17:39:04,418 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-08-18 17:39:04,418 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 17:39:04,418 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 17:39:04,419 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 17:39:04,419 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 17:39:04,419 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 17:39:04,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 17:39:04,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 17:39:04,419 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 17:39:04,419 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 17:39:04,420 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 17:39:04,420 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 17:39:04,420 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 17:39:04,420 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 17:39:04,420 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 17:39:04,420 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 17:39:04,421 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 17:39:04,421 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 17:39:04,421 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 17:39:04,421 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 17:39:04,421 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 17:39:04,421 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 17:39:04,422 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 17:39:04,422 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-18 17:39:04,422 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 17:39:04,422 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 17:39:04,422 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 17:39:04,422 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 17:39:04,422 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 17:39:04,423 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 17:39:04,423 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 17:39:04,423 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 17:39:04,423 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 17:39:05,546 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 17:39:05,547 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 17:39:05,556 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 05:39:05 BoogieIcfgContainer [2020-08-18 17:39:05,556 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 17:39:05,559 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 17:39:05,560 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 17:39:05,563 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 17:39:05,563 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 05:39:03" (1/3) ... [2020-08-18 17:39:05,564 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5722ea7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 05:39:05, skipping insertion in model container [2020-08-18 17:39:05,565 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:39:04" (2/3) ... [2020-08-18 17:39:05,565 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5722ea7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 05:39:05, skipping insertion in model container [2020-08-18 17:39:05,566 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 05:39:05" (3/3) ... [2020-08-18 17:39:05,567 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product38.cil.c [2020-08-18 17:39:05,578 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 17:39:05,587 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 17:39:05,602 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 17:39:05,634 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 17:39:05,634 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 17:39:05,634 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 17:39:05,634 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 17:39:05,635 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 17:39:05,635 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 17:39:05,635 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 17:39:05,635 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 17:39:05,657 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states. [2020-08-18 17:39:05,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-18 17:39:05,667 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:39:05,668 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 17:39:05,669 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:39:05,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:39:05,676 INFO L82 PathProgramCache]: Analyzing trace with hash 1406508770, now seen corresponding path program 1 times [2020-08-18 17:39:05,683 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:39:05,684 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [260171945] [2020-08-18 17:39:05,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:39:05,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:39:06,390 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 17:39:06,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:39:06,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:39:06,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 17:39:06,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:39:06,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 17:39:06,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:39:06,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 17:39:06,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:39:06,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 17:39:06,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:39:06,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 17:39:06,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:39:06,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 17:39:06,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:39:06,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 17:39:06,507 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [260171945] [2020-08-18 17:39:06,509 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 17:39:06,510 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 17:39:06,511 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680661696] [2020-08-18 17:39:06,517 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 17:39:06,518 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:39:06,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 17:39:06,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 17:39:06,536 INFO L87 Difference]: Start difference. First operand 170 states. Second operand 3 states. [2020-08-18 17:39:07,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:39:07,691 INFO L93 Difference]: Finished difference Result 296 states and 388 transitions. [2020-08-18 17:39:07,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 17:39:07,694 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-18 17:39:07,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:39:07,709 INFO L225 Difference]: With dead ends: 296 [2020-08-18 17:39:07,709 INFO L226 Difference]: Without dead ends: 160 [2020-08-18 17:39:07,714 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 17:39:07,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-08-18 17:39:07,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 127. [2020-08-18 17:39:07,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-08-18 17:39:07,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 149 transitions. [2020-08-18 17:39:07,807 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 149 transitions. Word has length 46 [2020-08-18 17:39:07,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:39:07,808 INFO L479 AbstractCegarLoop]: Abstraction has 127 states and 149 transitions. [2020-08-18 17:39:07,808 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 17:39:07,808 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 149 transitions. [2020-08-18 17:39:07,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-18 17:39:07,812 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:39:07,812 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 17:39:07,813 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 17:39:07,813 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:39:07,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:39:07,813 INFO L82 PathProgramCache]: Analyzing trace with hash 297997714, now seen corresponding path program 1 times [2020-08-18 17:39:07,814 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:39:07,814 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1414725737] [2020-08-18 17:39:07,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:39:07,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:39:08,171 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 17:39:08,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:39:08,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:39:08,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 17:39:08,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:39:08,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 17:39:08,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:39:08,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 17:39:08,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:39:08,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 17:39:08,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:39:08,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 17:39:08,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:39:08,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 17:39:08,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:39:08,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 17:39:08,213 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1414725737] [2020-08-18 17:39:08,213 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 17:39:08,213 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 17:39:08,214 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774628317] [2020-08-18 17:39:08,215 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 17:39:08,216 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:39:08,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 17:39:08,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 17:39:08,216 INFO L87 Difference]: Start difference. First operand 127 states and 149 transitions. Second operand 4 states. [2020-08-18 17:39:08,615 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 17:39:09,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:39:09,339 INFO L93 Difference]: Finished difference Result 225 states and 275 transitions. [2020-08-18 17:39:09,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 17:39:09,340 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-18 17:39:09,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:39:09,343 INFO L225 Difference]: With dead ends: 225 [2020-08-18 17:39:09,343 INFO L226 Difference]: Without dead ends: 144 [2020-08-18 17:39:09,345 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-18 17:39:09,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-08-18 17:39:09,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 118. [2020-08-18 17:39:09,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-08-18 17:39:09,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 137 transitions. [2020-08-18 17:39:09,390 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 137 transitions. Word has length 47 [2020-08-18 17:39:09,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:39:09,391 INFO L479 AbstractCegarLoop]: Abstraction has 118 states and 137 transitions. [2020-08-18 17:39:09,391 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 17:39:09,391 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 137 transitions. [2020-08-18 17:39:09,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-18 17:39:09,399 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:39:09,400 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 17:39:09,400 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 17:39:09,400 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:39:09,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:39:09,401 INFO L82 PathProgramCache]: Analyzing trace with hash -1416539958, now seen corresponding path program 1 times [2020-08-18 17:39:09,401 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:39:09,401 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1568346605] [2020-08-18 17:39:09,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:39:09,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:39:09,819 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 17:39:09,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:39:09,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:39:09,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 17:39:09,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:39:09,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 17:39:09,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:39:09,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 17:39:09,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:39:09,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 17:39:09,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:39:09,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 17:39:09,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:39:09,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 17:39:09,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:39:09,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 17:39:09,927 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1568346605] [2020-08-18 17:39:09,927 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 17:39:09,927 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 17:39:09,928 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34094482] [2020-08-18 17:39:09,929 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 17:39:09,930 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:39:09,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 17:39:09,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 17:39:09,932 INFO L87 Difference]: Start difference. First operand 118 states and 137 transitions. Second operand 8 states. [2020-08-18 17:39:10,285 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 17:39:10,578 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 17:39:10,874 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 17:39:11,107 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 17:39:12,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:39:12,219 INFO L93 Difference]: Finished difference Result 238 states and 293 transitions. [2020-08-18 17:39:12,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 17:39:12,222 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2020-08-18 17:39:12,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:39:12,227 INFO L225 Difference]: With dead ends: 238 [2020-08-18 17:39:12,228 INFO L226 Difference]: Without dead ends: 144 [2020-08-18 17:39:12,229 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-18 17:39:12,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-08-18 17:39:12,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 118. [2020-08-18 17:39:12,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-08-18 17:39:12,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 136 transitions. [2020-08-18 17:39:12,271 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 136 transitions. Word has length 52 [2020-08-18 17:39:12,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:39:12,272 INFO L479 AbstractCegarLoop]: Abstraction has 118 states and 136 transitions. [2020-08-18 17:39:12,272 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 17:39:12,272 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 136 transitions. [2020-08-18 17:39:12,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-08-18 17:39:12,274 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:39:12,274 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] [2020-08-18 17:39:12,274 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 17:39:12,274 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:39:12,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:39:12,275 INFO L82 PathProgramCache]: Analyzing trace with hash -819223945, now seen corresponding path program 1 times [2020-08-18 17:39:12,275 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:39:12,275 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1986734413] [2020-08-18 17:39:12,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:39:12,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:39:12,528 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 17:39:12,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:39:12,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:39:12,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 17:39:12,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:39:12,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 17:39:12,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:39:12,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 17:39:12,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:39:12,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 17:39:12,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:39:12,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 17:39:12,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:39:12,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:39:12,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:39:12,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:39:12,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:39:12,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-18 17:39:12,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:39:12,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-08-18 17:39:12,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:39:12,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 17:39:12,609 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1986734413] [2020-08-18 17:39:12,609 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 17:39:12,609 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 17:39:12,610 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120744727] [2020-08-18 17:39:12,610 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 17:39:12,610 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:39:12,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 17:39:12,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-18 17:39:12,611 INFO L87 Difference]: Start difference. First operand 118 states and 136 transitions. Second operand 6 states. [2020-08-18 17:39:12,925 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 17:39:14,035 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 17:39:14,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:39:14,655 INFO L93 Difference]: Finished difference Result 335 states and 415 transitions. [2020-08-18 17:39:14,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 17:39:14,656 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 65 [2020-08-18 17:39:14,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:39:14,659 INFO L225 Difference]: With dead ends: 335 [2020-08-18 17:39:14,659 INFO L226 Difference]: Without dead ends: 241 [2020-08-18 17:39:14,660 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-08-18 17:39:14,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2020-08-18 17:39:14,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 198. [2020-08-18 17:39:14,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2020-08-18 17:39:14,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 225 transitions. [2020-08-18 17:39:14,711 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 225 transitions. Word has length 65 [2020-08-18 17:39:14,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:39:14,711 INFO L479 AbstractCegarLoop]: Abstraction has 198 states and 225 transitions. [2020-08-18 17:39:14,711 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 17:39:14,711 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 225 transitions. [2020-08-18 17:39:14,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-08-18 17:39:14,713 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:39:14,713 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 17:39:14,714 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 17:39:14,714 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:39:14,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:39:14,714 INFO L82 PathProgramCache]: Analyzing trace with hash -1180966768, now seen corresponding path program 1 times [2020-08-18 17:39:14,714 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:39:14,715 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1016231570] [2020-08-18 17:39:14,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:39:14,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:39:14,979 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 17:39:14,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:39:14,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:39:15,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 17:39:15,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:39:15,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 17:39:15,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:39:15,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 17:39:15,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:39:15,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 17:39:15,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:39:15,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 17:39:15,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:39:15,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:39:15,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:39:15,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:39:15,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:39:15,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:39:15,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:39:15,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 17:39:15,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:39:15,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-18 17:39:15,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:39:15,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-18 17:39:15,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:39:15,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 17:39:15,065 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1016231570] [2020-08-18 17:39:15,065 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 17:39:15,066 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 17:39:15,066 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902796288] [2020-08-18 17:39:15,066 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 17:39:15,067 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:39:15,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 17:39:15,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 17:39:15,067 INFO L87 Difference]: Start difference. First operand 198 states and 225 transitions. Second operand 8 states. [2020-08-18 17:39:15,455 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 17:39:16,604 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 17:39:16,859 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 17:39:17,101 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 17:39:17,316 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 17:39:17,595 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 17:39:18,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:39:18,591 INFO L93 Difference]: Finished difference Result 592 states and 731 transitions. [2020-08-18 17:39:18,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 17:39:18,593 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 79 [2020-08-18 17:39:18,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:39:18,596 INFO L225 Difference]: With dead ends: 592 [2020-08-18 17:39:18,597 INFO L226 Difference]: Without dead ends: 418 [2020-08-18 17:39:18,598 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-08-18 17:39:18,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2020-08-18 17:39:18,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 351. [2020-08-18 17:39:18,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 351 states. [2020-08-18 17:39:18,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 400 transitions. [2020-08-18 17:39:18,680 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 400 transitions. Word has length 79 [2020-08-18 17:39:18,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:39:18,680 INFO L479 AbstractCegarLoop]: Abstraction has 351 states and 400 transitions. [2020-08-18 17:39:18,680 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 17:39:18,680 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 400 transitions. [2020-08-18 17:39:18,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-18 17:39:18,682 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:39:18,682 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 17:39:18,683 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 17:39:18,683 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:39:18,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:39:18,683 INFO L82 PathProgramCache]: Analyzing trace with hash 1165038356, now seen corresponding path program 1 times [2020-08-18 17:39:18,683 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:39:18,684 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2001328660] [2020-08-18 17:39:18,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:39:18,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:39:18,990 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 17:39:18,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:39:19,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:39:19,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 17:39:19,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:39:19,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 17:39:19,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:39:19,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 17:39:19,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:39:19,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 17:39:19,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:39:19,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 17:39:19,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:39:19,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 17:39:19,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:39:19,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:39:19,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:39:19,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:39:19,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:39:19,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:39:19,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:39:19,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 17:39:19,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:39:19,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-18 17:39:19,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:39:19,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-18 17:39:19,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:39:19,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 17:39:19,100 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2001328660] [2020-08-18 17:39:19,100 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 17:39:19,100 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 17:39:19,101 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099312557] [2020-08-18 17:39:19,101 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 17:39:19,101 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:39:19,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 17:39:19,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 17:39:19,102 INFO L87 Difference]: Start difference. First operand 351 states and 400 transitions. Second operand 9 states. [2020-08-18 17:39:19,460 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 17:39:20,518 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 17:39:20,740 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 17:39:21,012 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 17:39:21,260 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 17:39:21,510 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 17:39:22,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:39:22,483 INFO L93 Difference]: Finished difference Result 460 states and 580 transitions. [2020-08-18 17:39:22,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-18 17:39:22,484 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 83 [2020-08-18 17:39:22,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:39:22,489 INFO L225 Difference]: With dead ends: 460 [2020-08-18 17:39:22,489 INFO L226 Difference]: Without dead ends: 457 [2020-08-18 17:39:22,490 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-18 17:39:22,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states. [2020-08-18 17:39:22,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 351. [2020-08-18 17:39:22,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 351 states. [2020-08-18 17:39:22,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 399 transitions. [2020-08-18 17:39:22,557 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 399 transitions. Word has length 83 [2020-08-18 17:39:22,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:39:22,558 INFO L479 AbstractCegarLoop]: Abstraction has 351 states and 399 transitions. [2020-08-18 17:39:22,558 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 17:39:22,558 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 399 transitions. [2020-08-18 17:39:22,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-18 17:39:22,560 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:39:22,560 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 17:39:22,560 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 17:39:22,560 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:39:22,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:39:22,561 INFO L82 PathProgramCache]: Analyzing trace with hash 1066260182, now seen corresponding path program 1 times [2020-08-18 17:39:22,561 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:39:22,561 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [977163071] [2020-08-18 17:39:22,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:39:22,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:39:22,784 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 17:39:22,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:39:22,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:39:22,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 17:39:22,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:39:22,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 17:39:22,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:39:22,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 17:39:22,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:39:22,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 17:39:22,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:39:22,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 17:39:22,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:39:22,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 17:39:22,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:39:22,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:39:22,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:39:22,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:39:22,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:39:22,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:39:22,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:39:22,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 17:39:22,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:39:22,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-18 17:39:22,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:39:22,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-18 17:39:22,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:39:22,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 17:39:22,949 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [977163071] [2020-08-18 17:39:22,949 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 17:39:22,949 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 17:39:22,950 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969374783] [2020-08-18 17:39:22,950 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 17:39:22,951 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:39:22,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 17:39:22,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 17:39:22,956 INFO L87 Difference]: Start difference. First operand 351 states and 399 transitions. Second operand 9 states. [2020-08-18 17:39:23,762 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 17:39:24,004 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 17:39:24,254 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 17:39:24,483 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 17:39:25,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:39:25,446 INFO L93 Difference]: Finished difference Result 788 states and 970 transitions. [2020-08-18 17:39:25,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 17:39:25,446 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 84 [2020-08-18 17:39:25,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:39:25,450 INFO L225 Difference]: With dead ends: 788 [2020-08-18 17:39:25,450 INFO L226 Difference]: Without dead ends: 461 [2020-08-18 17:39:25,451 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-18 17:39:25,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2020-08-18 17:39:25,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 361. [2020-08-18 17:39:25,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 361 states. [2020-08-18 17:39:25,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 409 transitions. [2020-08-18 17:39:25,520 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 409 transitions. Word has length 84 [2020-08-18 17:39:25,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:39:25,520 INFO L479 AbstractCegarLoop]: Abstraction has 361 states and 409 transitions. [2020-08-18 17:39:25,520 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 17:39:25,521 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 409 transitions. [2020-08-18 17:39:25,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-18 17:39:25,522 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:39:25,522 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 17:39:25,523 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 17:39:25,523 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:39:25,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:39:25,523 INFO L82 PathProgramCache]: Analyzing trace with hash 1088892436, now seen corresponding path program 1 times [2020-08-18 17:39:25,524 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:39:25,524 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [824685480] [2020-08-18 17:39:25,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:39:25,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:39:25,782 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 17:39:25,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:39:25,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:39:25,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 17:39:25,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:39:25,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 17:39:25,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:39:25,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 17:39:25,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:39:25,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 17:39:25,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:39:25,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 17:39:25,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:39:25,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 17:39:25,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:39:25,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:39:25,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:39:25,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:39:25,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:39:25,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:39:25,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:39:25,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 17:39:25,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:39:25,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-18 17:39:25,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:39:25,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-18 17:39:25,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:39:25,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 17:39:25,920 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [824685480] [2020-08-18 17:39:25,920 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 17:39:25,920 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-18 17:39:25,921 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977083649] [2020-08-18 17:39:25,922 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 17:39:25,922 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:39:25,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 17:39:25,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-18 17:39:25,923 INFO L87 Difference]: Start difference. First operand 361 states and 409 transitions. Second operand 11 states. [2020-08-18 17:39:26,404 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 17:39:26,648 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 17:39:26,862 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 17:39:27,428 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 17:39:27,670 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 17:39:27,913 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 17:39:28,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:39:28,995 INFO L93 Difference]: Finished difference Result 812 states and 1010 transitions. [2020-08-18 17:39:28,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 17:39:28,996 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 84 [2020-08-18 17:39:28,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:39:29,000 INFO L225 Difference]: With dead ends: 812 [2020-08-18 17:39:29,000 INFO L226 Difference]: Without dead ends: 475 [2020-08-18 17:39:29,002 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-18 17:39:29,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475 states. [2020-08-18 17:39:29,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475 to 369. [2020-08-18 17:39:29,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 369 states. [2020-08-18 17:39:29,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 417 transitions. [2020-08-18 17:39:29,072 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 417 transitions. Word has length 84 [2020-08-18 17:39:29,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:39:29,072 INFO L479 AbstractCegarLoop]: Abstraction has 369 states and 417 transitions. [2020-08-18 17:39:29,073 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 17:39:29,073 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 417 transitions. [2020-08-18 17:39:29,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-18 17:39:29,074 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:39:29,074 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 17:39:29,075 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 17:39:29,075 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:39:29,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:39:29,075 INFO L82 PathProgramCache]: Analyzing trace with hash 2114384435, now seen corresponding path program 1 times [2020-08-18 17:39:29,075 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:39:29,076 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1988493624] [2020-08-18 17:39:29,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:39:29,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:39:29,333 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 17:39:29,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:39:29,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:39:29,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 17:39:29,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:39:29,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 17:39:29,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:39:29,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 17:39:29,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:39:29,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 17:39:29,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:39:29,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 17:39:29,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:39:29,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 17:39:29,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:39:29,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:39:29,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:39:29,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:39:29,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:39:29,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:39:29,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:39:29,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 17:39:29,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:39:29,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-18 17:39:29,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:39:29,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-18 17:39:29,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:39:29,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 17:39:29,462 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1988493624] [2020-08-18 17:39:29,462 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 17:39:29,462 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-18 17:39:29,463 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959133606] [2020-08-18 17:39:29,463 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 17:39:29,463 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:39:29,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 17:39:29,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-18 17:39:29,464 INFO L87 Difference]: Start difference. First operand 369 states and 417 transitions. Second operand 7 states. [2020-08-18 17:39:29,830 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 17:39:30,514 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 17:39:32,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:39:32,307 INFO L93 Difference]: Finished difference Result 1154 states and 1484 transitions. [2020-08-18 17:39:32,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 17:39:32,308 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 84 [2020-08-18 17:39:32,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:39:32,313 INFO L225 Difference]: With dead ends: 1154 [2020-08-18 17:39:32,313 INFO L226 Difference]: Without dead ends: 809 [2020-08-18 17:39:32,315 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 33 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-08-18 17:39:32,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 809 states. [2020-08-18 17:39:32,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 809 to 689. [2020-08-18 17:39:32,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 689 states. [2020-08-18 17:39:32,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 689 states to 689 states and 811 transitions. [2020-08-18 17:39:32,414 INFO L78 Accepts]: Start accepts. Automaton has 689 states and 811 transitions. Word has length 84 [2020-08-18 17:39:32,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:39:32,414 INFO L479 AbstractCegarLoop]: Abstraction has 689 states and 811 transitions. [2020-08-18 17:39:32,415 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 17:39:32,415 INFO L276 IsEmpty]: Start isEmpty. Operand 689 states and 811 transitions. [2020-08-18 17:39:32,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-18 17:39:32,417 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:39:32,417 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 17:39:32,417 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 17:39:32,417 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:39:32,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:39:32,418 INFO L82 PathProgramCache]: Analyzing trace with hash 166319437, now seen corresponding path program 1 times [2020-08-18 17:39:32,418 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:39:32,418 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [97649187] [2020-08-18 17:39:32,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:39:32,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 17:39:32,471 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 17:39:32,471 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 17:39:32,476 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 17:39:32,500 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 05:39:32 BoogieIcfgContainer [2020-08-18 17:39:32,500 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 17:39:32,502 INFO L168 Benchmark]: Toolchain (without parser) took 28848.88 ms. Allocated memory was 140.0 MB in the beginning and 595.1 MB in the end (delta: 455.1 MB). Free memory was 102.1 MB in the beginning and 458.5 MB in the end (delta: -356.4 MB). Peak memory consumption was 98.7 MB. Max. memory is 7.1 GB. [2020-08-18 17:39:32,503 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-18 17:39:32,504 INFO L168 Benchmark]: CACSL2BoogieTranslator took 595.66 ms. Allocated memory was 140.0 MB in the beginning and 200.8 MB in the end (delta: 60.8 MB). Free memory was 101.9 MB in the beginning and 170.4 MB in the end (delta: -68.5 MB). Peak memory consumption was 28.3 MB. Max. memory is 7.1 GB. [2020-08-18 17:39:32,504 INFO L168 Benchmark]: Boogie Preprocessor took 89.92 ms. Allocated memory is still 200.8 MB. Free memory was 170.4 MB in the beginning and 166.1 MB in the end (delta: 4.4 MB). Peak memory consumption was 4.4 MB. Max. memory is 7.1 GB. [2020-08-18 17:39:32,505 INFO L168 Benchmark]: RCFGBuilder took 1215.29 ms. Allocated memory was 200.8 MB in the beginning and 235.9 MB in the end (delta: 35.1 MB). Free memory was 166.1 MB in the beginning and 196.4 MB in the end (delta: -30.4 MB). Peak memory consumption was 83.2 MB. Max. memory is 7.1 GB. [2020-08-18 17:39:32,506 INFO L168 Benchmark]: TraceAbstraction took 26940.86 ms. Allocated memory was 235.9 MB in the beginning and 595.1 MB in the end (delta: 359.1 MB). Free memory was 196.4 MB in the beginning and 458.5 MB in the end (delta: -262.1 MB). Peak memory consumption was 97.1 MB. Max. memory is 7.1 GB. [2020-08-18 17:39:32,509 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 595.66 ms. Allocated memory was 140.0 MB in the beginning and 200.8 MB in the end (delta: 60.8 MB). Free memory was 101.9 MB in the beginning and 170.4 MB in the end (delta: -68.5 MB). Peak memory consumption was 28.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 89.92 ms. Allocated memory is still 200.8 MB. Free memory was 170.4 MB in the beginning and 166.1 MB in the end (delta: 4.4 MB). Peak memory consumption was 4.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1215.29 ms. Allocated memory was 200.8 MB in the beginning and 235.9 MB in the end (delta: 35.1 MB). Free memory was 166.1 MB in the beginning and 196.4 MB in the end (delta: -30.4 MB). Peak memory consumption was 83.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 26940.86 ms. Allocated memory was 235.9 MB in the beginning and 595.1 MB in the end (delta: 359.1 MB). Free memory was 196.4 MB in the beginning and 458.5 MB in the end (delta: -262.1 MB). Peak memory consumption was 97.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 837]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L40] int cleanupTimeShifts = 4; [L377] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L580] int pumpRunning = 0; [L581] int systemActive = 1; [L843] int waterLevel = 1; [L844] int methaneLevelCritical = 0; [L121] int retValue_acc ; [L122] int tmp ; [L126] FCALL select_helpers() [L127] FCALL select_features() [L128] CALL, EXPR valid_product() [L170] int retValue_acc ; [L173] retValue_acc = 1 [L174] return (retValue_acc); [L128] RET, EXPR valid_product() [L128] tmp = valid_product() [L130] COND TRUE \read(tmp) [L132] FCALL setup() [L133] CALL runTest() [L112] CALL test() [L767] int splverifierCounter ; [L768] int tmp ; [L769] int tmp___0 ; [L770] int tmp___1 ; [L771] int tmp___2 ; [L774] splverifierCounter = 0 [L776] COND TRUE 1 [L778] COND TRUE splverifierCounter < 4 [L784] tmp = __VERIFIER_nondet_int() [L786] COND TRUE \read(tmp) [L788] CALL waterRise() [L861] COND TRUE waterLevel < 2 [L862] waterLevel = waterLevel + 1 [L788] RET waterRise() [L794] tmp___0 = __VERIFIER_nondet_int() [L796] COND TRUE \read(tmp___0) [L798] CALL changeMethaneLevel() [L873] COND FALSE !(\read(methaneLevelCritical)) [L876] methaneLevelCritical = 1 [L798] RET changeMethaneLevel() [L804] tmp___2 = __VERIFIER_nondet_int() [L806] COND FALSE !(\read(tmp___2)) [L812] tmp___1 = __VERIFIER_nondet_int() [L814] COND TRUE \read(tmp___1) [L821] CALL timeShift() [L587] COND FALSE !(\read(pumpRunning)) [L594] COND TRUE \read(systemActive) [L596] CALL processEnvironment() [L642] int tmp ; [L645] COND FALSE !(\read(pumpRunning)) [L660] CALL processEnvironment__wrappee__highWaterSensor() [L616] int tmp ; [L619] COND TRUE ! pumpRunning [L621] CALL, EXPR isHighWaterLevel() [L739] int retValue_acc ; [L740] int tmp ; [L741] int tmp___0 ; [L745] CALL, EXPR isHighWaterSensorDry() [L923] int retValue_acc ; [L926] COND FALSE !(waterLevel < 2) [L930] retValue_acc = 0 [L931] return (retValue_acc); [L745] RET, EXPR isHighWaterSensorDry() [L745] tmp = isHighWaterSensorDry() [L747] COND FALSE !(\read(tmp)) [L750] tmp___0 = 1 [L752] retValue_acc = tmp___0 [L753] return (retValue_acc); [L621] RET, EXPR isHighWaterLevel() [L621] tmp = isHighWaterLevel() [L623] COND TRUE \read(tmp) [L625] CALL activatePump() [L670] pumpRunning = 1 [L625] RET activatePump() [L660] RET processEnvironment__wrappee__highWaterSensor() [L596] RET processEnvironment() [L602] CALL __utac_acc__Specification1_spec__1() [L183] int tmp ; [L184] int tmp___0 ; [L188] CALL, EXPR isMethaneLevelCritical() [L882] int retValue_acc ; [L885] retValue_acc = methaneLevelCritical [L886] return (retValue_acc); [L188] RET, EXPR isMethaneLevelCritical() [L188] tmp = isMethaneLevelCritical() [L190] COND TRUE \read(tmp) [L192] CALL, EXPR isPumpRunning() [L694] int retValue_acc ; [L697] retValue_acc = pumpRunning [L698] return (retValue_acc); [L192] RET, EXPR isPumpRunning() [L192] tmp___0 = isPumpRunning() [L194] COND TRUE \read(tmp___0) [L196] CALL __automaton_fail() [L837] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 229 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 26.8s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 22.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1048 SDtfs, 1883 SDslu, 982 SDs, 0 SdLazy, 4943 SolverSat, 1282 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 11.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 320 GetRequests, 222 SyntacticMatches, 4 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 9.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=689occurred 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: 0.5s AutomataMinimizationTime, 9 MinimizatonAttempts, 627 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.3s InterpolantComputationTime, 712 NumberOfCodeBlocks, 712 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 615 ConstructedInterpolants, 0 QuantifiedInterpolants, 190312 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...