/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 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product49.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-267fbe0 [2020-07-17 11:27:46,234 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-17 11:27:46,236 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-17 11:27:46,255 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-17 11:27:46,256 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-17 11:27:46,258 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-17 11:27:46,260 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-17 11:27:46,273 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-17 11:27:46,275 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-17 11:27:46,276 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-17 11:27:46,277 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-17 11:27:46,280 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-17 11:27:46,280 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-17 11:27:46,284 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-17 11:27:46,286 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-17 11:27:46,287 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-17 11:27:46,288 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-17 11:27:46,293 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-17 11:27:46,294 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-17 11:27:46,298 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-17 11:27:46,300 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-17 11:27:46,302 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-17 11:27:46,305 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-17 11:27:46,306 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-17 11:27:46,309 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-17 11:27:46,309 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-17 11:27:46,309 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-17 11:27:46,313 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-17 11:27:46,313 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-17 11:27:46,314 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-17 11:27:46,314 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-17 11:27:46,315 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-17 11:27:46,316 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-17 11:27:46,317 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-17 11:27:46,320 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-17 11:27:46,320 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-17 11:27:46,323 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-17 11:27:46,323 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-17 11:27:46,324 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-17 11:27:46,324 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-17 11:27:46,326 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-17 11:27:46,327 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-17 11:27:46,349 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-17 11:27:46,349 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-17 11:27:46,351 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-17 11:27:46,352 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-17 11:27:46,352 INFO L138 SettingsManager]: * Use SBE=true [2020-07-17 11:27:46,352 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-17 11:27:46,352 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-17 11:27:46,353 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-17 11:27:46,353 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-17 11:27:46,353 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-17 11:27:46,354 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-17 11:27:46,354 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-17 11:27:46,354 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-17 11:27:46,355 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-17 11:27:46,355 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-17 11:27:46,355 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-17 11:27:46,355 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-17 11:27:46,356 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-17 11:27:46,356 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-17 11:27:46,356 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-17 11:27:46,356 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-17 11:27:46,356 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-17 11:27:46,357 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-17 11:27:46,357 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-17 11:27:46,357 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-17 11:27:46,357 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-17 11:27:46,357 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-17 11:27:46,357 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-17 11:27:46,358 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-17 11:27:46,358 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-07-17 11:27:46,681 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-17 11:27:46,695 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-17 11:27:46,698 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-17 11:27:46,700 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-17 11:27:46,700 INFO L275 PluginConnector]: CDTParser initialized [2020-07-17 11:27:46,701 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product49.cil.c [2020-07-17 11:27:46,763 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ade677de4/4e35ab9f449d430488f00315e0845d7a/FLAG27c06529b [2020-07-17 11:27:47,246 INFO L306 CDTParser]: Found 1 translation units. [2020-07-17 11:27:47,246 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec1_product49.cil.c [2020-07-17 11:27:47,269 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ade677de4/4e35ab9f449d430488f00315e0845d7a/FLAG27c06529b [2020-07-17 11:27:47,579 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ade677de4/4e35ab9f449d430488f00315e0845d7a [2020-07-17 11:27:47,590 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-17 11:27:47,593 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-17 11:27:47,594 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-17 11:27:47,595 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-17 11:27:47,599 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-17 11:27:47,601 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 11:27:47" (1/1) ... [2020-07-17 11:27:47,604 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d6f94b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 11:27:47, skipping insertion in model container [2020-07-17 11:27:47,604 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 11:27:47" (1/1) ... [2020-07-17 11:27:47,613 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-17 11:27:47,660 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-17 11:27:48,017 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 11:27:48,046 INFO L203 MainTranslator]: Completed pre-run [2020-07-17 11:27:48,253 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 11:27:48,285 INFO L208 MainTranslator]: Completed translation [2020-07-17 11:27:48,286 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 11:27:48 WrapperNode [2020-07-17 11:27:48,286 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-17 11:27:48,287 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-17 11:27:48,287 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-17 11:27:48,287 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-17 11:27:48,298 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 11:27:48" (1/1) ... [2020-07-17 11:27:48,299 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 11:27:48" (1/1) ... [2020-07-17 11:27:48,323 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 11:27:48" (1/1) ... [2020-07-17 11:27:48,324 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 11:27:48" (1/1) ... [2020-07-17 11:27:48,365 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 11:27:48" (1/1) ... [2020-07-17 11:27:48,381 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 11:27:48" (1/1) ... [2020-07-17 11:27:48,386 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 11:27:48" (1/1) ... [2020-07-17 11:27:48,393 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-17 11:27:48,394 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-17 11:27:48,394 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-17 11:27:48,394 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-17 11:27:48,396 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 11:27:48" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2020-07-17 11:27:48,493 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-17 11:27:48,493 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-17 11:27:48,493 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-07-17 11:27:48,493 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-07-17 11:27:48,494 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-07-17 11:27:48,494 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-07-17 11:27:48,494 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-07-17 11:27:48,494 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-07-17 11:27:48,494 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-17 11:27:48,494 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-07-17 11:27:48,495 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-07-17 11:27:48,495 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-07-17 11:27:48,496 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-07-17 11:27:48,497 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-07-17 11:27:48,497 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-07-17 11:27:48,498 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-07-17 11:27:48,498 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-07-17 11:27:48,498 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-07-17 11:27:48,498 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-07-17 11:27:48,499 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-07-17 11:27:48,499 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-07-17 11:27:48,499 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-07-17 11:27:48,500 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-07-17 11:27:48,500 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-07-17 11:27:48,500 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-07-17 11:27:48,501 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-07-17 11:27:48,502 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-07-17 11:27:48,502 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-07-17 11:27:48,502 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-07-17 11:27:48,503 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-07-17 11:27:48,503 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-07-17 11:27:48,503 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-07-17 11:27:48,503 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-07-17 11:27:48,503 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-07-17 11:27:48,503 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-07-17 11:27:48,504 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-07-17 11:27:48,504 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-07-17 11:27:48,504 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-07-17 11:27:48,504 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-07-17 11:27:48,504 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-07-17 11:27:48,505 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-17 11:27:48,505 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-17 11:27:48,505 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-07-17 11:27:48,505 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-07-17 11:27:48,506 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-07-17 11:27:48,506 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-07-17 11:27:48,506 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-07-17 11:27:48,506 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-07-17 11:27:48,506 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-07-17 11:27:48,506 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-07-17 11:27:48,507 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-07-17 11:27:48,507 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-07-17 11:27:48,507 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-07-17 11:27:48,507 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-07-17 11:27:48,507 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-07-17 11:27:48,507 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-07-17 11:27:48,508 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-07-17 11:27:48,508 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-07-17 11:27:48,508 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-07-17 11:27:48,508 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-17 11:27:48,508 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-07-17 11:27:48,508 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-17 11:27:48,508 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-17 11:27:48,509 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-07-17 11:27:48,509 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-17 11:27:48,509 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-17 11:27:48,509 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-17 11:27:48,509 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-17 11:27:48,510 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-07-17 11:27:48,510 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-17 11:27:48,510 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-07-17 11:27:48,510 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-07-17 11:27:48,511 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-17 11:27:48,512 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-07-17 11:27:48,512 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-07-17 11:27:48,512 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-17 11:27:48,512 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-07-17 11:27:48,513 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-07-17 11:27:48,513 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-07-17 11:27:48,513 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-07-17 11:27:48,513 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-07-17 11:27:48,514 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-07-17 11:27:48,514 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-07-17 11:27:48,514 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-07-17 11:27:48,514 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-07-17 11:27:48,515 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-07-17 11:27:48,515 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-07-17 11:27:48,516 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-07-17 11:27:48,516 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-07-17 11:27:48,516 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-07-17 11:27:48,518 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-07-17 11:27:48,518 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-17 11:27:48,518 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-07-17 11:27:48,518 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-17 11:27:49,732 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-17 11:27:49,732 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-07-17 11:27:49,738 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 11:27:49 BoogieIcfgContainer [2020-07-17 11:27:49,738 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-17 11:27:49,739 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-17 11:27:49,739 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-17 11:27:49,742 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-17 11:27:49,743 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.07 11:27:47" (1/3) ... [2020-07-17 11:27:49,743 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dd5967e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 11:27:49, skipping insertion in model container [2020-07-17 11:27:49,744 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 11:27:48" (2/3) ... [2020-07-17 11:27:49,744 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dd5967e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 11:27:49, skipping insertion in model container [2020-07-17 11:27:49,744 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 11:27:49" (3/3) ... [2020-07-17 11:27:49,746 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product49.cil.c [2020-07-17 11:27:49,756 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-17 11:27:49,764 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-17 11:27:49,778 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-17 11:27:49,802 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-17 11:27:49,802 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-17 11:27:49,802 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-17 11:27:49,802 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-17 11:27:49,802 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-17 11:27:49,803 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-17 11:27:49,803 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-17 11:27:49,803 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-17 11:27:49,825 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states. [2020-07-17 11:27:49,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-07-17 11:27:49,835 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 11:27:49,836 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] [2020-07-17 11:27:49,837 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 11:27:49,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 11:27:49,844 INFO L82 PathProgramCache]: Analyzing trace with hash 922466731, now seen corresponding path program 1 times [2020-07-17 11:27:49,854 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 11:27:49,854 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748442929] [2020-07-17 11:27:49,855 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 11:27:50,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:27:50,501 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-17 11:27:50,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:27:50,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:27:50,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:27:50,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:27:50,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:27:50,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:27:50,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:27:50,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 11:27:50,600 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748442929] [2020-07-17 11:27:50,601 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 11:27:50,601 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-17 11:27:50,602 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812024305] [2020-07-17 11:27:50,607 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-17 11:27:50,608 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 11:27:50,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-17 11:27:50,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 11:27:50,628 INFO L87 Difference]: Start difference. First operand 174 states. Second operand 3 states. [2020-07-17 11:27:51,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 11:27:51,770 INFO L93 Difference]: Finished difference Result 297 states and 388 transitions. [2020-07-17 11:27:51,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-17 11:27:51,772 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-07-17 11:27:51,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 11:27:51,787 INFO L225 Difference]: With dead ends: 297 [2020-07-17 11:27:51,787 INFO L226 Difference]: Without dead ends: 160 [2020-07-17 11:27:51,792 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 [2020-07-17 11:27:51,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-07-17 11:27:51,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 128. [2020-07-17 11:27:51,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-07-17 11:27:51,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 150 transitions. [2020-07-17 11:27:51,878 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 150 transitions. Word has length 46 [2020-07-17 11:27:51,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 11:27:51,879 INFO L479 AbstractCegarLoop]: Abstraction has 128 states and 150 transitions. [2020-07-17 11:27:51,879 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-17 11:27:51,879 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 150 transitions. [2020-07-17 11:27:51,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-07-17 11:27:51,882 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 11:27:51,883 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] [2020-07-17 11:27:51,883 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-17 11:27:51,883 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 11:27:51,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 11:27:51,884 INFO L82 PathProgramCache]: Analyzing trace with hash 288176866, now seen corresponding path program 1 times [2020-07-17 11:27:51,884 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 11:27:51,885 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085313110] [2020-07-17 11:27:51,885 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 11:27:51,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:27:52,237 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-17 11:27:52,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:27:52,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:27:52,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:27:52,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:27:52,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:27:52,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:27:52,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:27:52,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 11:27:52,278 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085313110] [2020-07-17 11:27:52,279 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 11:27:52,279 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-17 11:27:52,279 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669648982] [2020-07-17 11:27:52,281 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-17 11:27:52,281 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 11:27:52,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-17 11:27:52,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-17 11:27:52,282 INFO L87 Difference]: Start difference. First operand 128 states and 150 transitions. Second operand 4 states. [2020-07-17 11:27:52,712 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-17 11:27:53,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 11:27:53,521 INFO L93 Difference]: Finished difference Result 230 states and 279 transitions. [2020-07-17 11:27:53,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-17 11:27:53,522 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-07-17 11:27:53,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 11:27:53,526 INFO L225 Difference]: With dead ends: 230 [2020-07-17 11:27:53,526 INFO L226 Difference]: Without dead ends: 144 [2020-07-17 11:27:53,528 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 [2020-07-17 11:27:53,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-07-17 11:27:53,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 119. [2020-07-17 11:27:53,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-07-17 11:27:53,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 138 transitions. [2020-07-17 11:27:53,563 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 138 transitions. Word has length 47 [2020-07-17 11:27:53,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 11:27:53,563 INFO L479 AbstractCegarLoop]: Abstraction has 119 states and 138 transitions. [2020-07-17 11:27:53,564 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-17 11:27:53,564 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 138 transitions. [2020-07-17 11:27:53,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-07-17 11:27:53,566 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 11:27:53,566 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 11:27:53,566 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-17 11:27:53,567 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 11:27:53,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 11:27:53,567 INFO L82 PathProgramCache]: Analyzing trace with hash -2059632594, now seen corresponding path program 1 times [2020-07-17 11:27:53,567 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 11:27:53,568 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702371609] [2020-07-17 11:27:53,568 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 11:27:53,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:27:53,870 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-17 11:27:53,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:27:53,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:27:53,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:27:53,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:27:53,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:27:53,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:27:53,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:27:53,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 11:27:53,944 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702371609] [2020-07-17 11:27:53,945 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 11:27:53,945 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-07-17 11:27:53,945 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545025220] [2020-07-17 11:27:53,946 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-17 11:27:53,946 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 11:27:53,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-17 11:27:53,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-07-17 11:27:53,947 INFO L87 Difference]: Start difference. First operand 119 states and 138 transitions. Second operand 8 states. [2020-07-17 11:27:54,350 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-17 11:27:54,659 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-17 11:27:54,909 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-17 11:27:55,125 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-17 11:27:56,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 11:27:56,230 INFO L93 Difference]: Finished difference Result 239 states and 293 transitions. [2020-07-17 11:27:56,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-17 11:27:56,231 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-07-17 11:27:56,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 11:27:56,233 INFO L225 Difference]: With dead ends: 239 [2020-07-17 11:27:56,234 INFO L226 Difference]: Without dead ends: 144 [2020-07-17 11:27:56,240 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-07-17 11:27:56,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-07-17 11:27:56,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 119. [2020-07-17 11:27:56,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-07-17 11:27:56,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 137 transitions. [2020-07-17 11:27:56,297 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 137 transitions. Word has length 51 [2020-07-17 11:27:56,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 11:27:56,298 INFO L479 AbstractCegarLoop]: Abstraction has 119 states and 137 transitions. [2020-07-17 11:27:56,298 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-17 11:27:56,298 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 137 transitions. [2020-07-17 11:27:56,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-07-17 11:27:56,308 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 11:27:56,308 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 11:27:56,309 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-17 11:27:56,309 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 11:27:56,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 11:27:56,313 INFO L82 PathProgramCache]: Analyzing trace with hash -1182566725, now seen corresponding path program 1 times [2020-07-17 11:27:56,314 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 11:27:56,314 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74003447] [2020-07-17 11:27:56,314 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 11:27:56,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:27:56,667 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-17 11:27:56,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:27:56,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:27:56,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:27:56,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:27:56,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:27:56,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:27:56,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:27:56,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:27:56,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:27:56,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:27:56,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 11:27:56,746 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74003447] [2020-07-17 11:27:56,746 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 11:27:56,746 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-17 11:27:56,747 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72487915] [2020-07-17 11:27:56,747 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-17 11:27:56,747 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 11:27:56,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-17 11:27:56,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-07-17 11:27:56,748 INFO L87 Difference]: Start difference. First operand 119 states and 137 transitions. Second operand 6 states. [2020-07-17 11:27:57,096 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-17 11:27:58,161 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-17 11:27:58,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 11:27:58,806 INFO L93 Difference]: Finished difference Result 331 states and 409 transitions. [2020-07-17 11:27:58,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-17 11:27:58,806 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 64 [2020-07-17 11:27:58,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 11:27:58,809 INFO L225 Difference]: With dead ends: 331 [2020-07-17 11:27:58,810 INFO L226 Difference]: Without dead ends: 236 [2020-07-17 11:27:58,811 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 [2020-07-17 11:27:58,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2020-07-17 11:27:58,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 195. [2020-07-17 11:27:58,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2020-07-17 11:27:58,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 222 transitions. [2020-07-17 11:27:58,863 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 222 transitions. Word has length 64 [2020-07-17 11:27:58,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 11:27:58,863 INFO L479 AbstractCegarLoop]: Abstraction has 195 states and 222 transitions. [2020-07-17 11:27:58,863 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-17 11:27:58,863 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 222 transitions. [2020-07-17 11:27:58,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-07-17 11:27:58,865 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 11:27:58,865 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 11:27:58,865 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-17 11:27:58,866 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 11:27:58,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 11:27:58,866 INFO L82 PathProgramCache]: Analyzing trace with hash 590157777, now seen corresponding path program 1 times [2020-07-17 11:27:58,866 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 11:27:58,866 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193582509] [2020-07-17 11:27:58,867 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 11:27:58,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:27:59,170 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-17 11:27:59,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:27:59,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:27:59,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:27:59,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:27:59,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:27:59,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:27:59,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:27:59,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:27:59,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:27:59,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:27:59,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:27:59,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:27:59,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 11:27:59,296 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193582509] [2020-07-17 11:27:59,297 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 11:27:59,297 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-07-17 11:27:59,297 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155176393] [2020-07-17 11:27:59,298 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-17 11:27:59,298 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 11:27:59,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-17 11:27:59,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-07-17 11:27:59,299 INFO L87 Difference]: Start difference. First operand 195 states and 222 transitions. Second operand 8 states. [2020-07-17 11:27:59,776 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-17 11:28:00,813 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-17 11:28:01,065 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-17 11:28:01,289 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-17 11:28:01,512 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-17 11:28:01,806 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-17 11:28:02,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 11:28:02,821 INFO L93 Difference]: Finished difference Result 580 states and 716 transitions. [2020-07-17 11:28:02,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-07-17 11:28:02,825 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 78 [2020-07-17 11:28:02,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 11:28:02,829 INFO L225 Difference]: With dead ends: 580 [2020-07-17 11:28:02,829 INFO L226 Difference]: Without dead ends: 409 [2020-07-17 11:28:02,830 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 [2020-07-17 11:28:02,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2020-07-17 11:28:02,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 345. [2020-07-17 11:28:02,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 345 states. [2020-07-17 11:28:02,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 394 transitions. [2020-07-17 11:28:02,920 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 394 transitions. Word has length 78 [2020-07-17 11:28:02,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 11:28:02,921 INFO L479 AbstractCegarLoop]: Abstraction has 345 states and 394 transitions. [2020-07-17 11:28:02,921 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-17 11:28:02,921 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 394 transitions. [2020-07-17 11:28:02,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-07-17 11:28:02,922 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 11:28:02,923 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 11:28:02,923 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-07-17 11:28:02,923 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 11:28:02,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 11:28:02,923 INFO L82 PathProgramCache]: Analyzing trace with hash 1032148237, now seen corresponding path program 1 times [2020-07-17 11:28:02,924 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 11:28:02,924 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896467450] [2020-07-17 11:28:02,924 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 11:28:02,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:28:03,194 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-17 11:28:03,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:28:03,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:28:03,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:28:03,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:28:03,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:28:03,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:28:03,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:28:03,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:28:03,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:28:03,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:28:03,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:28:03,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:28:03,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:28:03,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 11:28:03,331 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896467450] [2020-07-17 11:28:03,332 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 11:28:03,332 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-07-17 11:28:03,332 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505862855] [2020-07-17 11:28:03,335 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-17 11:28:03,336 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 11:28:03,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-17 11:28:03,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-07-17 11:28:03,336 INFO L87 Difference]: Start difference. First operand 345 states and 394 transitions. Second operand 9 states. [2020-07-17 11:28:03,713 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-17 11:28:04,768 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-17 11:28:04,992 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-17 11:28:05,259 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-17 11:28:05,514 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-17 11:28:05,764 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-17 11:28:06,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 11:28:06,792 INFO L93 Difference]: Finished difference Result 448 states and 562 transitions. [2020-07-17 11:28:06,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-07-17 11:28:06,793 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 82 [2020-07-17 11:28:06,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 11:28:06,798 INFO L225 Difference]: With dead ends: 448 [2020-07-17 11:28:06,798 INFO L226 Difference]: Without dead ends: 445 [2020-07-17 11:28:06,799 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 [2020-07-17 11:28:06,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states. [2020-07-17 11:28:06,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 345. [2020-07-17 11:28:06,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 345 states. [2020-07-17 11:28:06,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 393 transitions. [2020-07-17 11:28:06,870 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 393 transitions. Word has length 82 [2020-07-17 11:28:06,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 11:28:06,871 INFO L479 AbstractCegarLoop]: Abstraction has 345 states and 393 transitions. [2020-07-17 11:28:06,871 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-17 11:28:06,871 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 393 transitions. [2020-07-17 11:28:06,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-07-17 11:28:06,872 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 11:28:06,873 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] [2020-07-17 11:28:06,873 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-07-17 11:28:06,873 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 11:28:06,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 11:28:06,874 INFO L82 PathProgramCache]: Analyzing trace with hash 2065507240, now seen corresponding path program 1 times [2020-07-17 11:28:06,874 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 11:28:06,874 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074885956] [2020-07-17 11:28:06,874 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 11:28:06,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:28:07,132 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-17 11:28:07,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:28:07,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:28:07,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:28:07,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:28:07,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:28:07,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:28:07,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:28:07,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:28:07,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:28:07,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:28:07,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:28:07,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:28:07,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:28:07,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 11:28:07,293 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074885956] [2020-07-17 11:28:07,293 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 11:28:07,293 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-07-17 11:28:07,293 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577595203] [2020-07-17 11:28:07,294 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-17 11:28:07,294 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 11:28:07,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-17 11:28:07,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-07-17 11:28:07,295 INFO L87 Difference]: Start difference. First operand 345 states and 393 transitions. Second operand 9 states. [2020-07-17 11:28:08,232 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-17 11:28:08,486 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-07-17 11:28:08,728 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-17 11:28:08,956 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-17 11:28:09,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 11:28:09,927 INFO L93 Difference]: Finished difference Result 770 states and 946 transitions. [2020-07-17 11:28:09,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-17 11:28:09,929 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 83 [2020-07-17 11:28:09,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 11:28:09,932 INFO L225 Difference]: With dead ends: 770 [2020-07-17 11:28:09,933 INFO L226 Difference]: Without dead ends: 449 [2020-07-17 11:28:09,934 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 [2020-07-17 11:28:09,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2020-07-17 11:28:10,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 355. [2020-07-17 11:28:10,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 355 states. [2020-07-17 11:28:10,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 403 transitions. [2020-07-17 11:28:10,008 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 403 transitions. Word has length 83 [2020-07-17 11:28:10,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 11:28:10,009 INFO L479 AbstractCegarLoop]: Abstraction has 355 states and 403 transitions. [2020-07-17 11:28:10,009 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-17 11:28:10,009 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 403 transitions. [2020-07-17 11:28:10,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-07-17 11:28:10,011 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 11:28:10,011 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] [2020-07-17 11:28:10,011 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-07-17 11:28:10,011 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 11:28:10,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 11:28:10,012 INFO L82 PathProgramCache]: Analyzing trace with hash 2088139494, now seen corresponding path program 1 times [2020-07-17 11:28:10,012 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 11:28:10,012 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957965006] [2020-07-17 11:28:10,012 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 11:28:10,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:28:10,291 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-17 11:28:10,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:28:10,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:28:10,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:28:10,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:28:10,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:28:10,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:28:10,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:28:10,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:28:10,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:28:10,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:28:10,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:28:10,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:28:10,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:28:10,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 11:28:10,448 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957965006] [2020-07-17 11:28:10,448 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 11:28:10,449 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-07-17 11:28:10,449 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793231339] [2020-07-17 11:28:10,449 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-07-17 11:28:10,450 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 11:28:10,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-07-17 11:28:10,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-07-17 11:28:10,450 INFO L87 Difference]: Start difference. First operand 355 states and 403 transitions. Second operand 11 states. [2020-07-17 11:28:11,076 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-17 11:28:11,319 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-17 11:28:11,567 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-17 11:28:12,124 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-17 11:28:12,383 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-17 11:28:12,630 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-17 11:28:13,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 11:28:13,791 INFO L93 Difference]: Finished difference Result 794 states and 986 transitions. [2020-07-17 11:28:13,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-07-17 11:28:13,794 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 83 [2020-07-17 11:28:13,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 11:28:13,798 INFO L225 Difference]: With dead ends: 794 [2020-07-17 11:28:13,798 INFO L226 Difference]: Without dead ends: 463 [2020-07-17 11:28:13,800 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-07-17 11:28:13,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2020-07-17 11:28:13,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 363. [2020-07-17 11:28:13,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 363 states. [2020-07-17 11:28:13,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 411 transitions. [2020-07-17 11:28:13,862 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 411 transitions. Word has length 83 [2020-07-17 11:28:13,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 11:28:13,863 INFO L479 AbstractCegarLoop]: Abstraction has 363 states and 411 transitions. [2020-07-17 11:28:13,863 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-07-17 11:28:13,863 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 411 transitions. [2020-07-17 11:28:13,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-07-17 11:28:13,864 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 11:28:13,864 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] [2020-07-17 11:28:13,865 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-07-17 11:28:13,865 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 11:28:13,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 11:28:13,865 INFO L82 PathProgramCache]: Analyzing trace with hash -1181335803, now seen corresponding path program 1 times [2020-07-17 11:28:13,866 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 11:28:13,866 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513479382] [2020-07-17 11:28:13,866 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 11:28:13,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:28:14,189 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-17 11:28:14,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:28:14,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:28:14,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:28:14,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:28:14,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:28:14,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:28:14,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:28:14,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:28:14,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:28:14,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:28:14,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:28:14,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:28:14,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:28:14,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 11:28:14,375 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513479382] [2020-07-17 11:28:14,376 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 11:28:14,376 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-07-17 11:28:14,376 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378498907] [2020-07-17 11:28:14,377 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-17 11:28:14,377 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 11:28:14,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-17 11:28:14,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-07-17 11:28:14,378 INFO L87 Difference]: Start difference. First operand 363 states and 411 transitions. Second operand 7 states. [2020-07-17 11:28:14,960 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-17 11:28:15,439 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-17 11:28:17,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 11:28:17,421 INFO L93 Difference]: Finished difference Result 1097 states and 1408 transitions. [2020-07-17 11:28:17,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-07-17 11:28:17,422 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 83 [2020-07-17 11:28:17,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 11:28:17,428 INFO L225 Difference]: With dead ends: 1097 [2020-07-17 11:28:17,428 INFO L226 Difference]: Without dead ends: 758 [2020-07-17 11:28:17,430 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 33 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-07-17 11:28:17,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 758 states. [2020-07-17 11:28:17,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 758 to 659. [2020-07-17 11:28:17,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 659 states. [2020-07-17 11:28:17,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 781 transitions. [2020-07-17 11:28:17,580 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 781 transitions. Word has length 83 [2020-07-17 11:28:17,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 11:28:17,583 INFO L479 AbstractCegarLoop]: Abstraction has 659 states and 781 transitions. [2020-07-17 11:28:17,583 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-17 11:28:17,583 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 781 transitions. [2020-07-17 11:28:17,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-07-17 11:28:17,589 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 11:28:17,589 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 11:28:17,589 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-07-17 11:28:17,589 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 11:28:17,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 11:28:17,590 INFO L82 PathProgramCache]: Analyzing trace with hash -765720469, now seen corresponding path program 1 times [2020-07-17 11:28:17,590 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 11:28:17,590 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933145832] [2020-07-17 11:28:17,590 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 11:28:17,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-17 11:28:17,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-17 11:28:17,799 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-17 11:28:17,799 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-17 11:28:17,799 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-07-17 11:28:17,980 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.07 11:28:17 BoogieIcfgContainer [2020-07-17 11:28:17,980 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-17 11:28:17,982 INFO L168 Benchmark]: Toolchain (without parser) took 30390.60 ms. Allocated memory was 147.8 MB in the beginning and 586.7 MB in the end (delta: 438.8 MB). Free memory was 103.6 MB in the beginning and 443.3 MB in the end (delta: -339.7 MB). Peak memory consumption was 99.1 MB. Max. memory is 7.1 GB. [2020-07-17 11:28:17,983 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 147.8 MB. Free memory was 122.8 MB in the beginning and 122.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-17 11:28:17,984 INFO L168 Benchmark]: CACSL2BoogieTranslator took 692.20 ms. Allocated memory was 147.8 MB in the beginning and 205.5 MB in the end (delta: 57.7 MB). Free memory was 103.2 MB in the beginning and 175.6 MB in the end (delta: -72.4 MB). Peak memory consumption was 25.7 MB. Max. memory is 7.1 GB. [2020-07-17 11:28:17,984 INFO L168 Benchmark]: Boogie Preprocessor took 106.82 ms. Allocated memory is still 205.5 MB. Free memory was 175.6 MB in the beginning and 171.7 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB. [2020-07-17 11:28:17,985 INFO L168 Benchmark]: RCFGBuilder took 1343.89 ms. Allocated memory was 205.5 MB in the beginning and 233.8 MB in the end (delta: 28.3 MB). Free memory was 171.7 MB in the beginning and 191.5 MB in the end (delta: -19.8 MB). Peak memory consumption was 81.3 MB. Max. memory is 7.1 GB. [2020-07-17 11:28:17,987 INFO L168 Benchmark]: TraceAbstraction took 28241.13 ms. Allocated memory was 233.8 MB in the beginning and 586.7 MB in the end (delta: 352.8 MB). Free memory was 191.5 MB in the beginning and 443.3 MB in the end (delta: -251.8 MB). Peak memory consumption was 101.1 MB. Max. memory is 7.1 GB. [2020-07-17 11:28:17,990 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 147.8 MB. Free memory was 122.8 MB in the beginning and 122.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 692.20 ms. Allocated memory was 147.8 MB in the beginning and 205.5 MB in the end (delta: 57.7 MB). Free memory was 103.2 MB in the beginning and 175.6 MB in the end (delta: -72.4 MB). Peak memory consumption was 25.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 106.82 ms. Allocated memory is still 205.5 MB. Free memory was 175.6 MB in the beginning and 171.7 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1343.89 ms. Allocated memory was 205.5 MB in the beginning and 233.8 MB in the end (delta: 28.3 MB). Free memory was 171.7 MB in the beginning and 191.5 MB in the end (delta: -19.8 MB). Peak memory consumption was 81.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 28241.13 ms. Allocated memory was 233.8 MB in the beginning and 586.7 MB in the end (delta: 352.8 MB). Free memory was 191.5 MB in the beginning and 443.3 MB in the end (delta: -251.8 MB). Peak memory consumption was 101.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 950]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L69] int cleanupTimeShifts = 4; [L342] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L545] int pumpRunning = 0; [L546] int systemActive = 1; [L843] int waterLevel = 1; [L844] int methaneLevelCritical = 0; VAL [\old(cleanupTimeShifts)=171, \old(head)=162, \old(head)=176, \old(methaneLevelCritical)=146, \old(pumpRunning)=140, \old(systemActive)=139, \old(waterLevel)=141, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L150] int retValue_acc ; [L151] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L155] FCALL select_helpers() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L156] FCALL select_features() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L157] CALL, EXPR valid_product() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L833] int retValue_acc ; [L836] retValue_acc = 1 [L837] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=1, systemActive=1, waterLevel=1] [L157] RET, EXPR valid_product() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, valid_product()=1, waterLevel=1] [L157] tmp = valid_product() [L159] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=1, waterLevel=1] [L161] FCALL setup() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=1, waterLevel=1] [L162] CALL runTest() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L141] CALL test() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L743] int splverifierCounter ; [L744] int tmp ; [L745] int tmp___0 ; [L746] int tmp___1 ; [L747] int tmp___2 ; [L750] splverifierCounter = 0 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L752] COND TRUE 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L754] COND TRUE splverifierCounter < 4 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L760] tmp = __VERIFIER_nondet_int() [L762] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=1] [L764] CALL waterRise() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L861] COND TRUE waterLevel < 2 [L862] waterLevel = waterLevel + 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L764] RET waterRise() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=2] [L770] tmp___0 = __VERIFIER_nondet_int() [L772] COND TRUE \read(tmp___0) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=1, waterLevel=2] [L774] CALL changeMethaneLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L873] COND FALSE !(\read(methaneLevelCritical)) [L876] methaneLevelCritical = 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L774] RET changeMethaneLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=1, waterLevel=2] [L780] tmp___2 = __VERIFIER_nondet_int() [L782] COND TRUE \read(tmp___2) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=1, tmp___2=1, waterLevel=2] [L795] CALL timeShift() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L552] COND FALSE !(\read(pumpRunning)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L559] COND TRUE \read(systemActive) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L561] CALL processEnvironment() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L607] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L610] COND FALSE !(\read(pumpRunning)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L625] CALL processEnvironment__wrappee__highWaterSensor() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L581] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L584] COND TRUE ! pumpRunning VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L586] CALL, EXPR isHighWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L704] int retValue_acc ; [L705] int tmp ; [L706] int tmp___0 ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L710] CALL, EXPR isHighWaterSensorDry() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L923] int retValue_acc ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L926] COND FALSE !(waterLevel < 2) [L930] retValue_acc = 0 [L931] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, retValue_acc=0, systemActive=1, waterLevel=2] [L710] RET, EXPR isHighWaterSensorDry() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isHighWaterSensorDry()=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L710] tmp = isHighWaterSensorDry() [L712] COND FALSE !(\read(tmp)) [L715] tmp___0 = 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, tmp=0, tmp___0=1, waterLevel=2] [L717] retValue_acc = tmp___0 [L718] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, retValue_acc=1, systemActive=1, tmp=0, tmp___0=1, waterLevel=2] [L586] RET, EXPR isHighWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isHighWaterLevel()=1, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L586] tmp = isHighWaterLevel() [L588] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, tmp=1, waterLevel=2] [L590] CALL activatePump() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L635] pumpRunning = 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L590] RET activatePump() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, waterLevel=2] [L625] RET processEnvironment__wrappee__highWaterSensor() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L561] RET processEnvironment() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L567] CALL __utac_acc__Specification1_spec__1() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L44] int tmp ; [L45] int tmp___0 ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L49] CALL, EXPR isMethaneLevelCritical() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L882] int retValue_acc ; [L885] retValue_acc = methaneLevelCritical [L886] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=2] [L49] RET, EXPR isMethaneLevelCritical() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L49] tmp = isMethaneLevelCritical() [L51] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, waterLevel=2] [L53] CALL, EXPR isPumpRunning() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L659] int retValue_acc ; [L662] retValue_acc = pumpRunning [L663] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=2] [L53] RET, EXPR isPumpRunning() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isPumpRunning()=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, waterLevel=2] [L53] tmp___0 = isPumpRunning() [L55] COND TRUE \read(tmp___0) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, tmp___0=1, waterLevel=2] [L57] CALL __automaton_fail() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L950] __VERIFIER_error() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 40 procedures, 235 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 28.0s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 22.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1044 SDtfs, 1701 SDslu, 959 SDs, 0 SdLazy, 4844 SolverSat, 1009 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 12.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 316 GetRequests, 220 SyntacticMatches, 3 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 9.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=659occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 9 MinimizatonAttempts, 580 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.4s InterpolantComputationTime, 704 NumberOfCodeBlocks, 704 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 608 ConstructedInterpolants, 0 QuantifiedInterpolants, 186785 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...