/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy CAMEL_NO_AM -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product34.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-79ed534 [2020-07-19 20:54:46,499 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-19 20:54:46,502 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-19 20:54:46,514 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-19 20:54:46,515 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-19 20:54:46,516 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-19 20:54:46,517 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-19 20:54:46,519 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-19 20:54:46,521 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-19 20:54:46,522 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-19 20:54:46,523 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-19 20:54:46,524 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-19 20:54:46,524 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-19 20:54:46,525 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-19 20:54:46,527 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-19 20:54:46,528 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-19 20:54:46,529 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-19 20:54:46,529 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-19 20:54:46,531 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-19 20:54:46,534 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-19 20:54:46,536 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-19 20:54:46,537 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-19 20:54:46,538 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-19 20:54:46,539 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-19 20:54:46,542 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-19 20:54:46,543 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-19 20:54:46,543 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-19 20:54:46,544 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-19 20:54:46,545 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-19 20:54:46,546 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-19 20:54:46,546 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-19 20:54:46,547 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-19 20:54:46,548 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-19 20:54:46,549 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-19 20:54:46,550 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-19 20:54:46,550 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-19 20:54:46,551 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-19 20:54:46,551 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-19 20:54:46,551 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-19 20:54:46,554 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-19 20:54:46,554 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-19 20:54:46,555 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 [2020-07-19 20:54:46,588 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-19 20:54:46,588 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-19 20:54:46,590 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-19 20:54:46,590 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-19 20:54:46,590 INFO L138 SettingsManager]: * Use SBE=true [2020-07-19 20:54:46,591 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-19 20:54:46,591 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-19 20:54:46,591 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-19 20:54:46,591 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-19 20:54:46,591 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-19 20:54:46,592 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-19 20:54:46,592 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-19 20:54:46,592 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-19 20:54:46,593 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-19 20:54:46,593 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-19 20:54:46,594 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-19 20:54:46,594 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-19 20:54:46,594 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-19 20:54:46,594 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-19 20:54:46,594 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-19 20:54:46,595 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-19 20:54:46,595 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-19 20:54:46,595 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-19 20:54:46,596 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-19 20:54:46,596 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-19 20:54:46,596 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-19 20:54:46,596 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-19 20:54:46,597 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-19 20:54:46,597 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-19 20:54:46,598 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> CAMEL_NO_AM [2020-07-19 20:54:46,920 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-19 20:54:46,936 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-19 20:54:46,939 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-19 20:54:46,940 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-19 20:54:46,942 INFO L275 PluginConnector]: CDTParser initialized [2020-07-19 20:54:46,943 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product34.cil.c [2020-07-19 20:54:47,014 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/38e6c1e36/eed78df9485c41ce9c344030df12ba97/FLAG1886d7298 [2020-07-19 20:54:47,578 INFO L306 CDTParser]: Found 1 translation units. [2020-07-19 20:54:47,579 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec1_product34.cil.c [2020-07-19 20:54:47,594 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/38e6c1e36/eed78df9485c41ce9c344030df12ba97/FLAG1886d7298 [2020-07-19 20:54:47,913 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/38e6c1e36/eed78df9485c41ce9c344030df12ba97 [2020-07-19 20:54:47,921 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-19 20:54:47,924 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-19 20:54:47,926 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-19 20:54:47,926 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-19 20:54:47,929 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-19 20:54:47,930 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 08:54:47" (1/1) ... [2020-07-19 20:54:47,933 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b3bb6a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:54:47, skipping insertion in model container [2020-07-19 20:54:47,934 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 08:54:47" (1/1) ... [2020-07-19 20:54:47,941 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-19 20:54:47,987 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-19 20:54:48,376 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-19 20:54:48,389 INFO L203 MainTranslator]: Completed pre-run [2020-07-19 20:54:48,488 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-19 20:54:48,522 INFO L208 MainTranslator]: Completed translation [2020-07-19 20:54:48,522 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:54:48 WrapperNode [2020-07-19 20:54:48,522 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-19 20:54:48,523 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-19 20:54:48,523 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-19 20:54:48,524 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-19 20:54:48,539 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:54:48" (1/1) ... [2020-07-19 20:54:48,539 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:54:48" (1/1) ... [2020-07-19 20:54:48,559 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:54:48" (1/1) ... [2020-07-19 20:54:48,559 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:54:48" (1/1) ... [2020-07-19 20:54:48,593 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:54:48" (1/1) ... [2020-07-19 20:54:48,613 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:54:48" (1/1) ... [2020-07-19 20:54:48,626 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:54:48" (1/1) ... [2020-07-19 20:54:48,636 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-19 20:54:48,638 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-19 20:54:48,638 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-19 20:54:48,638 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-19 20:54:48,639 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:54:48" (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 [2020-07-19 20:54:48,720 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-19 20:54:48,720 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-19 20:54:48,720 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-07-19 20:54:48,720 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-07-19 20:54:48,720 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-07-19 20:54:48,720 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-07-19 20:54:48,721 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-07-19 20:54:48,721 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-19 20:54:48,721 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-07-19 20:54:48,721 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-07-19 20:54:48,722 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-07-19 20:54:48,722 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-07-19 20:54:48,722 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-07-19 20:54:48,723 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-07-19 20:54:48,723 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-07-19 20:54:48,724 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-07-19 20:54:48,724 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-07-19 20:54:48,724 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-07-19 20:54:48,725 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-07-19 20:54:48,725 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-07-19 20:54:48,725 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-07-19 20:54:48,725 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-07-19 20:54:48,725 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-07-19 20:54:48,725 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-07-19 20:54:48,726 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-07-19 20:54:48,726 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-07-19 20:54:48,726 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-07-19 20:54:48,727 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-07-19 20:54:48,727 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-07-19 20:54:48,727 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-07-19 20:54:48,727 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-07-19 20:54:48,727 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-07-19 20:54:48,727 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-07-19 20:54:48,727 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-07-19 20:54:48,728 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-07-19 20:54:48,728 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-07-19 20:54:48,728 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-07-19 20:54:48,728 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-07-19 20:54:48,728 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-19 20:54:48,728 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-19 20:54:48,728 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-07-19 20:54:48,729 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-07-19 20:54:48,729 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-07-19 20:54:48,729 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-07-19 20:54:48,729 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-07-19 20:54:48,729 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-07-19 20:54:48,729 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-07-19 20:54:48,730 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-07-19 20:54:48,730 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-07-19 20:54:48,730 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-07-19 20:54:48,730 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-07-19 20:54:48,730 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-07-19 20:54:48,730 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-07-19 20:54:48,730 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-19 20:54:48,731 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-07-19 20:54:48,731 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-19 20:54:48,731 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-19 20:54:48,731 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-07-19 20:54:48,731 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-19 20:54:48,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-19 20:54:48,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-19 20:54:48,732 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-19 20:54:48,732 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-07-19 20:54:48,732 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-19 20:54:48,732 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-07-19 20:54:48,733 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-07-19 20:54:48,733 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-19 20:54:48,733 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-07-19 20:54:48,733 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-07-19 20:54:48,733 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-19 20:54:48,733 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-07-19 20:54:48,734 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-07-19 20:54:48,734 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-07-19 20:54:48,735 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-07-19 20:54:48,735 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-07-19 20:54:48,735 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-07-19 20:54:48,735 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-07-19 20:54:48,735 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-07-19 20:54:48,735 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-07-19 20:54:48,736 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-07-19 20:54:48,736 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-07-19 20:54:48,736 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-07-19 20:54:48,737 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-07-19 20:54:48,737 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-07-19 20:54:48,737 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-07-19 20:54:48,737 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-07-19 20:54:48,737 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-07-19 20:54:48,739 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-19 20:54:48,739 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-07-19 20:54:48,739 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-19 20:54:49,780 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-19 20:54:49,781 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-07-19 20:54:49,786 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 08:54:49 BoogieIcfgContainer [2020-07-19 20:54:49,787 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-19 20:54:49,788 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-19 20:54:49,788 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-19 20:54:49,792 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-19 20:54:49,792 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 08:54:47" (1/3) ... [2020-07-19 20:54:49,793 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39b24fdb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 08:54:49, skipping insertion in model container [2020-07-19 20:54:49,793 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:54:48" (2/3) ... [2020-07-19 20:54:49,794 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39b24fdb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 08:54:49, skipping insertion in model container [2020-07-19 20:54:49,794 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 08:54:49" (3/3) ... [2020-07-19 20:54:49,795 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product34.cil.c [2020-07-19 20:54:49,807 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-19 20:54:49,815 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-19 20:54:49,830 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-19 20:54:49,855 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-19 20:54:49,855 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-19 20:54:49,855 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-19 20:54:49,856 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-19 20:54:49,856 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-19 20:54:49,856 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-19 20:54:49,856 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-19 20:54:49,856 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-19 20:54:49,880 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states. [2020-07-19 20:54:49,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-07-19 20:54:49,889 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 20:54:49,891 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] [2020-07-19 20:54:49,891 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 20:54:49,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 20:54:49,898 INFO L82 PathProgramCache]: Analyzing trace with hash 591069479, now seen corresponding path program 1 times [2020-07-19 20:54:49,908 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 20:54:49,908 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442533580] [2020-07-19 20:54:49,908 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@10615564 [2020-07-19 20:54:50,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:54:50,597 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-19 20:54:50,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:54:50,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:54:50,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:54:50,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:54:50,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:54:50,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:54:50,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:54:50,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 20:54:50,685 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442533580] [2020-07-19 20:54:50,686 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 20:54:50,686 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-19 20:54:50,687 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614082323] [2020-07-19 20:54:50,695 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-19 20:54:50,696 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 20:54:50,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-19 20:54:50,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-19 20:54:50,715 INFO L87 Difference]: Start difference. First operand 155 states. Second operand 3 states. [2020-07-19 20:54:51,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 20:54:51,789 INFO L93 Difference]: Finished difference Result 258 states and 341 transitions. [2020-07-19 20:54:51,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-19 20:54:51,791 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-07-19 20:54:51,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 20:54:51,805 INFO L225 Difference]: With dead ends: 258 [2020-07-19 20:54:51,805 INFO L226 Difference]: Without dead ends: 140 [2020-07-19 20:54:51,810 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-19 20:54:51,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-07-19 20:54:51,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 109. [2020-07-19 20:54:51,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-07-19 20:54:51,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 127 transitions. [2020-07-19 20:54:51,890 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 127 transitions. Word has length 46 [2020-07-19 20:54:51,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 20:54:51,891 INFO L479 AbstractCegarLoop]: Abstraction has 109 states and 127 transitions. [2020-07-19 20:54:51,891 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-19 20:54:51,891 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 127 transitions. [2020-07-19 20:54:51,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-07-19 20:54:51,894 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 20:54:51,895 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] [2020-07-19 20:54:51,895 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-19 20:54:51,895 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 20:54:51,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 20:54:51,896 INFO L82 PathProgramCache]: Analyzing trace with hash -1158422735, now seen corresponding path program 1 times [2020-07-19 20:54:51,896 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 20:54:51,896 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811943598] [2020-07-19 20:54:51,897 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@10615564 [2020-07-19 20:54:51,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:54:52,209 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-19 20:54:52,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:54:52,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:54:52,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:54:52,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:54:52,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:54:52,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:54:52,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:54:52,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 20:54:52,255 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811943598] [2020-07-19 20:54:52,255 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 20:54:52,255 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-19 20:54:52,256 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744375415] [2020-07-19 20:54:52,257 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-19 20:54:52,258 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 20:54:52,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-19 20:54:52,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-19 20:54:52,258 INFO L87 Difference]: Start difference. First operand 109 states and 127 transitions. Second operand 4 states. [2020-07-19 20:54:52,654 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-19 20:54:53,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 20:54:53,298 INFO L93 Difference]: Finished difference Result 187 states and 228 transitions. [2020-07-19 20:54:53,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-19 20:54:53,300 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-07-19 20:54:53,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 20:54:53,303 INFO L225 Difference]: With dead ends: 187 [2020-07-19 20:54:53,303 INFO L226 Difference]: Without dead ends: 124 [2020-07-19 20:54:53,306 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 [2020-07-19 20:54:53,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-07-19 20:54:53,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 100. [2020-07-19 20:54:53,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-07-19 20:54:53,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 115 transitions. [2020-07-19 20:54:53,340 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 115 transitions. Word has length 47 [2020-07-19 20:54:53,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 20:54:53,341 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 115 transitions. [2020-07-19 20:54:53,341 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-19 20:54:53,341 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 115 transitions. [2020-07-19 20:54:53,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-07-19 20:54:53,343 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 20:54:53,343 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 20:54:53,343 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-19 20:54:53,343 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 20:54:53,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 20:54:53,344 INFO L82 PathProgramCache]: Analyzing trace with hash -870171294, now seen corresponding path program 1 times [2020-07-19 20:54:53,344 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 20:54:53,344 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527528660] [2020-07-19 20:54:53,345 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@10615564 [2020-07-19 20:54:53,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:54:53,652 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-19 20:54:53,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:54:53,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:54:53,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:54:53,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:54:53,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:54:53,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:54:53,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:54:53,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 20:54:53,754 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527528660] [2020-07-19 20:54:53,755 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 20:54:53,755 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-07-19 20:54:53,755 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070246596] [2020-07-19 20:54:53,756 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-19 20:54:53,756 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 20:54:53,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-19 20:54:53,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-07-19 20:54:53,757 INFO L87 Difference]: Start difference. First operand 100 states and 115 transitions. Second operand 8 states. [2020-07-19 20:54:54,169 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-19 20:54:54,476 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-19 20:54:54,740 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-19 20:54:54,957 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-19 20:54:55,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 20:54:55,888 INFO L93 Difference]: Finished difference Result 200 states and 246 transitions. [2020-07-19 20:54:55,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-19 20:54:55,895 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2020-07-19 20:54:55,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 20:54:55,897 INFO L225 Difference]: With dead ends: 200 [2020-07-19 20:54:55,897 INFO L226 Difference]: Without dead ends: 124 [2020-07-19 20:54:55,898 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-07-19 20:54:55,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-07-19 20:54:55,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 100. [2020-07-19 20:54:55,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-07-19 20:54:55,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 114 transitions. [2020-07-19 20:54:55,929 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 114 transitions. Word has length 52 [2020-07-19 20:54:55,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 20:54:55,929 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 114 transitions. [2020-07-19 20:54:55,929 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-19 20:54:55,929 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 114 transitions. [2020-07-19 20:54:55,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-07-19 20:54:55,931 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 20:54:55,931 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] [2020-07-19 20:54:55,932 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-19 20:54:55,932 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 20:54:55,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 20:54:55,938 INFO L82 PathProgramCache]: Analyzing trace with hash 1248327953, now seen corresponding path program 1 times [2020-07-19 20:54:55,939 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 20:54:55,939 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246058814] [2020-07-19 20:54:55,939 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@10615564 [2020-07-19 20:54:55,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:54:56,208 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-19 20:54:56,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:54:56,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:54:56,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:54:56,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:54:56,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:54:56,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:54:56,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:54:56,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:54:56,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:54:56,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 20:54:56,296 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246058814] [2020-07-19 20:54:56,297 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 20:54:56,297 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-19 20:54:56,297 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420087893] [2020-07-19 20:54:56,298 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-19 20:54:56,298 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 20:54:56,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-19 20:54:56,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-07-19 20:54:56,298 INFO L87 Difference]: Start difference. First operand 100 states and 114 transitions. Second operand 6 states. [2020-07-19 20:54:56,593 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-19 20:54:57,670 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-19 20:54:58,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 20:54:58,146 INFO L93 Difference]: Finished difference Result 288 states and 356 transitions. [2020-07-19 20:54:58,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-19 20:54:58,149 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 60 [2020-07-19 20:54:58,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 20:54:58,152 INFO L225 Difference]: With dead ends: 288 [2020-07-19 20:54:58,152 INFO L226 Difference]: Without dead ends: 212 [2020-07-19 20:54:58,154 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-07-19 20:54:58,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2020-07-19 20:54:58,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 169. [2020-07-19 20:54:58,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2020-07-19 20:54:58,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 193 transitions. [2020-07-19 20:54:58,191 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 193 transitions. Word has length 60 [2020-07-19 20:54:58,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 20:54:58,191 INFO L479 AbstractCegarLoop]: Abstraction has 169 states and 193 transitions. [2020-07-19 20:54:58,191 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-19 20:54:58,191 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 193 transitions. [2020-07-19 20:54:58,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-07-19 20:54:58,193 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 20:54:58,193 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] [2020-07-19 20:54:58,193 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-19 20:54:58,194 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 20:54:58,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 20:54:58,194 INFO L82 PathProgramCache]: Analyzing trace with hash 1574039554, now seen corresponding path program 1 times [2020-07-19 20:54:58,194 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 20:54:58,194 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444770640] [2020-07-19 20:54:58,195 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@10615564 [2020-07-19 20:54:58,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:54:58,509 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-19 20:54:58,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:54:58,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:54:58,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:54:58,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:54:58,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:54:58,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:54:58,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:54:58,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:54:58,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:54:58,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:54:58,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:54:58,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 20:54:58,651 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444770640] [2020-07-19 20:54:58,651 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 20:54:58,651 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-07-19 20:54:58,652 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981098384] [2020-07-19 20:54:58,652 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-19 20:54:58,652 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 20:54:58,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-19 20:54:58,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-07-19 20:54:58,653 INFO L87 Difference]: Start difference. First operand 169 states and 193 transitions. Second operand 8 states. [2020-07-19 20:54:58,960 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-19 20:54:59,991 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-19 20:55:00,242 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-19 20:55:00,478 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-19 20:55:00,694 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-19 20:55:00,966 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-19 20:55:01,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 20:55:01,581 INFO L93 Difference]: Finished difference Result 505 states and 630 transitions. [2020-07-19 20:55:01,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-07-19 20:55:01,585 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 74 [2020-07-19 20:55:01,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 20:55:01,590 INFO L225 Difference]: With dead ends: 505 [2020-07-19 20:55:01,590 INFO L226 Difference]: Without dead ends: 360 [2020-07-19 20:55:01,592 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-07-19 20:55:01,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2020-07-19 20:55:01,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 293. [2020-07-19 20:55:01,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 293 states. [2020-07-19 20:55:01,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 336 transitions. [2020-07-19 20:55:01,686 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 336 transitions. Word has length 74 [2020-07-19 20:55:01,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 20:55:01,686 INFO L479 AbstractCegarLoop]: Abstraction has 293 states and 336 transitions. [2020-07-19 20:55:01,686 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-19 20:55:01,686 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 336 transitions. [2020-07-19 20:55:01,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-07-19 20:55:01,688 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 20:55:01,688 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] [2020-07-19 20:55:01,689 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-07-19 20:55:01,689 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 20:55:01,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 20:55:01,689 INFO L82 PathProgramCache]: Analyzing trace with hash -133122882, now seen corresponding path program 1 times [2020-07-19 20:55:01,689 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 20:55:01,690 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502021925] [2020-07-19 20:55:01,690 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@10615564 [2020-07-19 20:55:01,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:01,951 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-19 20:55:01,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:01,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:02,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:02,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:02,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:02,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:02,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:02,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:02,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:02,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:02,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:02,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:02,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 20:55:02,066 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502021925] [2020-07-19 20:55:02,067 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 20:55:02,067 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-07-19 20:55:02,067 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575114910] [2020-07-19 20:55:02,068 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-19 20:55:02,068 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 20:55:02,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-19 20:55:02,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-07-19 20:55:02,069 INFO L87 Difference]: Start difference. First operand 293 states and 336 transitions. Second operand 9 states. [2020-07-19 20:55:02,443 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-19 20:55:03,466 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-19 20:55:03,670 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-19 20:55:03,919 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-19 20:55:04,164 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-19 20:55:04,420 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-19 20:55:05,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 20:55:05,077 INFO L93 Difference]: Finished difference Result 402 states and 512 transitions. [2020-07-19 20:55:05,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-07-19 20:55:05,078 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 78 [2020-07-19 20:55:05,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 20:55:05,083 INFO L225 Difference]: With dead ends: 402 [2020-07-19 20:55:05,083 INFO L226 Difference]: Without dead ends: 399 [2020-07-19 20:55:05,084 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-07-19 20:55:05,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2020-07-19 20:55:05,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 293. [2020-07-19 20:55:05,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 293 states. [2020-07-19 20:55:05,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 335 transitions. [2020-07-19 20:55:05,158 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 335 transitions. Word has length 78 [2020-07-19 20:55:05,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 20:55:05,158 INFO L479 AbstractCegarLoop]: Abstraction has 293 states and 335 transitions. [2020-07-19 20:55:05,158 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-19 20:55:05,159 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 335 transitions. [2020-07-19 20:55:05,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-07-19 20:55:05,160 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 20:55:05,160 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 20:55:05,160 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-07-19 20:55:05,160 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 20:55:05,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 20:55:05,161 INFO L82 PathProgramCache]: Analyzing trace with hash 1769050262, now seen corresponding path program 1 times [2020-07-19 20:55:05,161 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 20:55:05,161 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253309190] [2020-07-19 20:55:05,161 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@10615564 [2020-07-19 20:55:05,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:05,397 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-19 20:55:05,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:05,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:05,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:05,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:05,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:05,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:05,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:05,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:05,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:05,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:05,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:05,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:05,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 20:55:05,525 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253309190] [2020-07-19 20:55:05,526 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 20:55:05,526 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-07-19 20:55:05,526 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244142606] [2020-07-19 20:55:05,526 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-19 20:55:05,527 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 20:55:05,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-19 20:55:05,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-07-19 20:55:05,532 INFO L87 Difference]: Start difference. First operand 293 states and 335 transitions. Second operand 9 states. [2020-07-19 20:55:06,962 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-19 20:55:07,209 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-07-19 20:55:07,447 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-19 20:55:07,671 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-19 20:55:08,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 20:55:08,507 INFO L93 Difference]: Finished difference Result 672 states and 837 transitions. [2020-07-19 20:55:08,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-19 20:55:08,507 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 79 [2020-07-19 20:55:08,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 20:55:08,510 INFO L225 Difference]: With dead ends: 672 [2020-07-19 20:55:08,511 INFO L226 Difference]: Without dead ends: 403 [2020-07-19 20:55:08,512 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-07-19 20:55:08,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2020-07-19 20:55:08,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 303. [2020-07-19 20:55:08,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 303 states. [2020-07-19 20:55:08,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 345 transitions. [2020-07-19 20:55:08,577 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 345 transitions. Word has length 79 [2020-07-19 20:55:08,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 20:55:08,578 INFO L479 AbstractCegarLoop]: Abstraction has 303 states and 345 transitions. [2020-07-19 20:55:08,578 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-19 20:55:08,578 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 345 transitions. [2020-07-19 20:55:08,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-07-19 20:55:08,580 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 20:55:08,580 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 20:55:08,580 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-07-19 20:55:08,580 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 20:55:08,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 20:55:08,581 INFO L82 PathProgramCache]: Analyzing trace with hash 1259577172, now seen corresponding path program 1 times [2020-07-19 20:55:08,581 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 20:55:08,581 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132126050] [2020-07-19 20:55:08,581 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@10615564 [2020-07-19 20:55:08,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:08,819 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-19 20:55:08,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:08,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:08,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:08,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:08,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:08,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:08,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:08,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:08,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:08,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:08,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:08,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:08,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 20:55:08,934 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132126050] [2020-07-19 20:55:08,934 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 20:55:08,935 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-07-19 20:55:08,935 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984848159] [2020-07-19 20:55:08,935 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-07-19 20:55:08,936 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 20:55:08,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-07-19 20:55:08,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-07-19 20:55:08,936 INFO L87 Difference]: Start difference. First operand 303 states and 345 transitions. Second operand 11 states. [2020-07-19 20:55:09,466 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-19 20:55:09,689 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-19 20:55:09,907 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-19 20:55:10,528 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-19 20:55:10,776 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-19 20:55:11,011 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-19 20:55:11,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 20:55:11,907 INFO L93 Difference]: Finished difference Result 696 states and 875 transitions. [2020-07-19 20:55:11,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-07-19 20:55:11,908 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 79 [2020-07-19 20:55:11,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 20:55:11,912 INFO L225 Difference]: With dead ends: 696 [2020-07-19 20:55:11,912 INFO L226 Difference]: Without dead ends: 417 [2020-07-19 20:55:11,913 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-07-19 20:55:11,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2020-07-19 20:55:11,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 311. [2020-07-19 20:55:11,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 311 states. [2020-07-19 20:55:11,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 353 transitions. [2020-07-19 20:55:11,969 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 353 transitions. Word has length 79 [2020-07-19 20:55:11,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 20:55:11,969 INFO L479 AbstractCegarLoop]: Abstraction has 311 states and 353 transitions. [2020-07-19 20:55:11,970 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-07-19 20:55:11,970 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 353 transitions. [2020-07-19 20:55:11,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-07-19 20:55:11,971 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 20:55:11,971 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 20:55:11,971 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-07-19 20:55:11,972 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 20:55:11,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 20:55:11,972 INFO L82 PathProgramCache]: Analyzing trace with hash -750526669, now seen corresponding path program 1 times [2020-07-19 20:55:11,972 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 20:55:11,973 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767066234] [2020-07-19 20:55:11,973 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@10615564 [2020-07-19 20:55:11,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:12,206 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-19 20:55:12,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:12,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:12,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:12,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:12,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:12,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:12,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:12,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:12,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:12,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:12,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:12,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 20:55:12,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 20:55:12,308 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767066234] [2020-07-19 20:55:12,308 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 20:55:12,308 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-07-19 20:55:12,308 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666143751] [2020-07-19 20:55:12,309 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-19 20:55:12,309 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 20:55:12,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-19 20:55:12,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-07-19 20:55:12,310 INFO L87 Difference]: Start difference. First operand 311 states and 353 transitions. Second operand 7 states. [2020-07-19 20:55:12,653 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-19 20:55:13,113 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-19 20:55:14,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 20:55:14,951 INFO L93 Difference]: Finished difference Result 1018 states and 1317 transitions. [2020-07-19 20:55:14,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-07-19 20:55:14,952 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 79 [2020-07-19 20:55:14,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 20:55:14,957 INFO L225 Difference]: With dead ends: 1018 [2020-07-19 20:55:14,958 INFO L226 Difference]: Without dead ends: 731 [2020-07-19 20:55:14,959 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 31 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-07-19 20:55:14,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 731 states. [2020-07-19 20:55:15,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 731 to 611. [2020-07-19 20:55:15,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 611 states. [2020-07-19 20:55:15,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 719 transitions. [2020-07-19 20:55:15,091 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 719 transitions. Word has length 79 [2020-07-19 20:55:15,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 20:55:15,093 INFO L479 AbstractCegarLoop]: Abstraction has 611 states and 719 transitions. [2020-07-19 20:55:15,093 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-19 20:55:15,093 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 719 transitions. [2020-07-19 20:55:15,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-07-19 20:55:15,096 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 20:55:15,096 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 20:55:15,096 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-07-19 20:55:15,096 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 20:55:15,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 20:55:15,097 INFO L82 PathProgramCache]: Analyzing trace with hash 893739545, now seen corresponding path program 1 times [2020-07-19 20:55:15,097 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 20:55:15,097 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756499011] [2020-07-19 20:55:15,097 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@10615564 [2020-07-19 20:55:15,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-19 20:55:15,188 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-19 20:55:15,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-19 20:55:15,244 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-19 20:55:15,413 INFO L174 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2020-07-19 20:55:15,413 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-19 20:55:15,414 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-07-19 20:55:15,646 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.07 08:55:15 BoogieIcfgContainer [2020-07-19 20:55:15,646 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-19 20:55:15,648 INFO L168 Benchmark]: Toolchain (without parser) took 27725.11 ms. Allocated memory was 140.0 MB in the beginning and 563.6 MB in the end (delta: 423.6 MB). Free memory was 102.1 MB in the beginning and 492.4 MB in the end (delta: -390.3 MB). Peak memory consumption was 441.6 MB. Max. memory is 7.1 GB. [2020-07-19 20:55:15,648 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 140.0 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-19 20:55:15,649 INFO L168 Benchmark]: CACSL2BoogieTranslator took 597.12 ms. Allocated memory was 140.0 MB in the beginning and 201.3 MB in the end (delta: 61.3 MB). Free memory was 101.7 MB in the beginning and 169.0 MB in the end (delta: -67.3 MB). Peak memory consumption was 26.1 MB. Max. memory is 7.1 GB. [2020-07-19 20:55:15,650 INFO L168 Benchmark]: Boogie Preprocessor took 112.87 ms. Allocated memory is still 201.3 MB. Free memory was 169.0 MB in the beginning and 164.6 MB in the end (delta: 4.4 MB). Peak memory consumption was 4.4 MB. Max. memory is 7.1 GB. [2020-07-19 20:55:15,651 INFO L168 Benchmark]: RCFGBuilder took 1148.76 ms. Allocated memory was 201.3 MB in the beginning and 234.9 MB in the end (delta: 33.6 MB). Free memory was 164.6 MB in the beginning and 192.1 MB in the end (delta: -27.5 MB). Peak memory consumption was 79.4 MB. Max. memory is 7.1 GB. [2020-07-19 20:55:15,652 INFO L168 Benchmark]: TraceAbstraction took 25857.98 ms. Allocated memory was 234.9 MB in the beginning and 563.6 MB in the end (delta: 328.7 MB). Free memory was 192.1 MB in the beginning and 492.4 MB in the end (delta: -300.3 MB). Peak memory consumption was 436.7 MB. Max. memory is 7.1 GB. [2020-07-19 20:55:15,656 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 140.0 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 597.12 ms. Allocated memory was 140.0 MB in the beginning and 201.3 MB in the end (delta: 61.3 MB). Free memory was 101.7 MB in the beginning and 169.0 MB in the end (delta: -67.3 MB). Peak memory consumption was 26.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 112.87 ms. Allocated memory is still 201.3 MB. Free memory was 169.0 MB in the beginning and 164.6 MB in the end (delta: 4.4 MB). Peak memory consumption was 4.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1148.76 ms. Allocated memory was 201.3 MB in the beginning and 234.9 MB in the end (delta: 33.6 MB). Free memory was 164.6 MB in the beginning and 192.1 MB in the end (delta: -27.5 MB). Peak memory consumption was 79.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 25857.98 ms. Allocated memory was 234.9 MB in the beginning and 563.6 MB in the end (delta: 328.7 MB). Free memory was 192.1 MB in the beginning and 492.4 MB in the end (delta: -300.3 MB). Peak memory consumption was 436.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 514]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L40] int cleanupTimeShifts = 4; [L313] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L524] int waterLevel = 1; [L525] int methaneLevelCritical = 0; [L689] int pumpRunning = 0; [L690] int systemActive = 1; VAL [\old(cleanupTimeShifts)=169, \old(head)=176, \old(head)=158, \old(methaneLevelCritical)=142, \old(pumpRunning)=135, \old(systemActive)=134, \old(waterLevel)=137, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L121] int retValue_acc ; [L122] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L126] FCALL select_helpers() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L127] FCALL select_features() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L128] CALL, EXPR valid_product() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L902] int retValue_acc ; [L905] retValue_acc = 1 [L906] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=1, systemActive=1, waterLevel=1] [L128] RET, EXPR valid_product() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, valid_product()=1, waterLevel=1] [L128] tmp = valid_product() [L130] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=1, waterLevel=1] [L132] FCALL setup() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=1, waterLevel=1] [L133] CALL runTest() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L112] CALL test() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L620] int splverifierCounter ; [L621] int tmp ; [L622] int tmp___0 ; [L623] int tmp___1 ; [L624] int tmp___2 ; [L627] splverifierCounter = 0 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L629] COND TRUE 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L631] COND TRUE splverifierCounter < 4 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L637] tmp = __VERIFIER_nondet_int() [L639] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=1] [L641] CALL waterRise() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L542] COND TRUE waterLevel < 2 [L543] waterLevel = waterLevel + 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L641] RET waterRise() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=2] [L647] tmp___0 = __VERIFIER_nondet_int() [L649] COND TRUE \read(tmp___0) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=-1, waterLevel=2] [L651] CALL changeMethaneLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L554] COND FALSE !(\read(methaneLevelCritical)) [L557] methaneLevelCritical = 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L651] RET changeMethaneLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=-1, waterLevel=2] [L657] tmp___2 = __VERIFIER_nondet_int() [L659] COND FALSE !(\read(tmp___2)) [L665] tmp___1 = __VERIFIER_nondet_int() [L667] COND TRUE \read(tmp___1) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=-1, tmp___1=-2, tmp___2=0, waterLevel=2] [L674] CALL timeShift() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L697] COND FALSE !(\read(pumpRunning)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L704] COND TRUE \read(systemActive) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L706] CALL processEnvironment() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L726] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L729] COND TRUE ! pumpRunning VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L731] CALL, EXPR isHighWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L823] int retValue_acc ; [L824] int tmp ; [L825] int tmp___0 ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L829] CALL, EXPR isHighWaterSensorDry() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L604] int retValue_acc ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L607] COND FALSE !(waterLevel < 2) [L611] retValue_acc = 0 [L612] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, retValue_acc=0, systemActive=1, waterLevel=2] [L829] RET, EXPR isHighWaterSensorDry() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isHighWaterSensorDry()=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L829] tmp = isHighWaterSensorDry() [L831] COND FALSE !(\read(tmp)) [L834] tmp___0 = 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, tmp=0, tmp___0=1, waterLevel=2] [L836] retValue_acc = tmp___0 [L837] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \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] [L731] RET, EXPR isHighWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isHighWaterLevel()=1, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L731] tmp = isHighWaterLevel() [L733] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, tmp=1, waterLevel=2] [L735] CALL activatePump() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L754] pumpRunning = 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L735] RET activatePump() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, waterLevel=2] [L706] RET processEnvironment() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L712] CALL __utac_acc__Specification1_spec__1() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L851] int tmp ; [L852] int tmp___0 ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L856] CALL, EXPR isMethaneLevelCritical() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L563] int retValue_acc ; [L566] retValue_acc = methaneLevelCritical [L567] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=2] [L856] RET, EXPR isMethaneLevelCritical() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L856] tmp = isMethaneLevelCritical() [L858] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, waterLevel=2] [L860] CALL, EXPR isPumpRunning() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L778] int retValue_acc ; [L781] retValue_acc = pumpRunning [L782] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=2] [L860] RET, EXPR isPumpRunning() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isPumpRunning()=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, waterLevel=2] [L860] tmp___0 = isPumpRunning() [L862] COND TRUE \read(tmp___0) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, tmp___0=1, waterLevel=2] [L864] CALL __automaton_fail() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L514] __VERIFIER_error() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 38 procedures, 219 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 25.5s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 20.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 899 SDtfs, 1722 SDslu, 876 SDs, 0 SdLazy, 4206 SolverSat, 1159 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 11.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 301 GetRequests, 206 SyntacticMatches, 2 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 9.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=611occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 9 MinimizatonAttempts, 621 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.2s InterpolantComputationTime, 677 NumberOfCodeBlocks, 677 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 585 ConstructedInterpolants, 0 QuantifiedInterpolants, 176723 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...