/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product59.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-24 03:29:59,965 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-24 03:29:59,967 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-24 03:30:00,000 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-24 03:30:00,001 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-24 03:30:00,002 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-24 03:30:00,004 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-24 03:30:00,006 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-24 03:30:00,016 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-24 03:30:00,017 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-24 03:30:00,018 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-24 03:30:00,019 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-24 03:30:00,020 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-24 03:30:00,021 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-24 03:30:00,022 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-24 03:30:00,023 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-24 03:30:00,024 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-24 03:30:00,025 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-24 03:30:00,027 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-24 03:30:00,030 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-24 03:30:00,031 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-24 03:30:00,032 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-24 03:30:00,034 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-24 03:30:00,035 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-24 03:30:00,038 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-24 03:30:00,038 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-24 03:30:00,039 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-24 03:30:00,040 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-24 03:30:00,040 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-24 03:30:00,041 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-24 03:30:00,042 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-24 03:30:00,042 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-24 03:30:00,043 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-24 03:30:00,044 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-24 03:30:00,045 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-24 03:30:00,046 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-24 03:30:00,046 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-24 03:30:00,047 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-24 03:30:00,047 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-24 03:30:00,048 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-24 03:30:00,049 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-24 03:30:00,050 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf [2021-02-24 03:30:00,062 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-24 03:30:00,062 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-24 03:30:00,064 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-24 03:30:00,064 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-24 03:30:00,064 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-24 03:30:00,065 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-24 03:30:00,065 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-24 03:30:00,065 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-24 03:30:00,066 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-24 03:30:00,066 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-24 03:30:00,066 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-24 03:30:00,066 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-24 03:30:00,067 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-24 03:30:00,067 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-24 03:30:00,067 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-24 03:30:00,067 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-24 03:30:00,068 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-24 03:30:00,068 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-24 03:30:00,068 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-24 03:30:00,068 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-24 03:30:00,069 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-24 03:30:00,069 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-24 03:30:00,069 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-24 03:30:00,069 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-24 03:30:00,458 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-24 03:30:00,482 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-24 03:30:00,485 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-24 03:30:00,487 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-24 03:30:00,487 INFO L275 PluginConnector]: CDTParser initialized [2021-02-24 03:30:00,488 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product59.cil.c [2021-02-24 03:30:00,568 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/98479118f/dab2909c340040269782040f0e9f0d3c/FLAG93add52da [2021-02-24 03:30:01,298 INFO L306 CDTParser]: Found 1 translation units. [2021-02-24 03:30:01,299 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product59.cil.c [2021-02-24 03:30:01,323 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/98479118f/dab2909c340040269782040f0e9f0d3c/FLAG93add52da [2021-02-24 03:30:01,547 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/98479118f/dab2909c340040269782040f0e9f0d3c [2021-02-24 03:30:01,550 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-24 03:30:01,563 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-24 03:30:01,564 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-24 03:30:01,565 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-24 03:30:01,568 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-24 03:30:01,569 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 03:30:01" (1/1) ... [2021-02-24 03:30:01,571 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d33ace9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:30:01, skipping insertion in model container [2021-02-24 03:30:01,571 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 03:30:01" (1/1) ... [2021-02-24 03:30:01,586 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-24 03:30:01,649 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-24 03:30:01,926 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product59.cil.c[14819,14832] [2021-02-24 03:30:01,990 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 03:30:02,008 INFO L203 MainTranslator]: Completed pre-run [2021-02-24 03:30:02,081 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product59.cil.c[14819,14832] [2021-02-24 03:30:02,096 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 03:30:02,136 INFO L208 MainTranslator]: Completed translation [2021-02-24 03:30:02,136 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:30:02 WrapperNode [2021-02-24 03:30:02,137 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-24 03:30:02,138 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-24 03:30:02,138 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-24 03:30:02,138 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-24 03:30:02,152 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:30:02" (1/1) ... [2021-02-24 03:30:02,153 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:30:02" (1/1) ... [2021-02-24 03:30:02,171 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:30:02" (1/1) ... [2021-02-24 03:30:02,171 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:30:02" (1/1) ... [2021-02-24 03:30:02,219 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:30:02" (1/1) ... [2021-02-24 03:30:02,236 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:30:02" (1/1) ... [2021-02-24 03:30:02,250 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:30:02" (1/1) ... [2021-02-24 03:30:02,266 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-24 03:30:02,267 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-24 03:30:02,268 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-24 03:30:02,268 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-24 03:30:02,269 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:30:02" (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 [2021-02-24 03:30:02,422 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-24 03:30:02,422 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-24 03:30:02,423 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-24 03:30:02,423 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-24 03:30:02,423 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-24 03:30:02,423 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-24 03:30:02,424 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-24 03:30:02,424 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-24 03:30:02,425 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-24 03:30:02,425 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-24 03:30:02,426 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-24 03:30:02,426 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-24 03:30:02,426 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-24 03:30:02,427 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-24 03:30:02,427 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-24 03:30:02,427 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-24 03:30:02,428 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2021-02-24 03:30:02,429 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2021-02-24 03:30:02,429 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-24 03:30:02,433 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-24 03:30:02,433 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-24 03:30:02,434 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-24 03:30:02,434 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-24 03:30:02,434 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-24 03:30:02,434 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-24 03:30:02,434 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-24 03:30:02,434 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-24 03:30:02,435 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2021-02-24 03:30:02,435 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-24 03:30:02,435 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-24 03:30:02,435 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-24 03:30:02,435 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-02-24 03:30:02,435 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2021-02-24 03:30:02,436 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-24 03:30:02,436 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2021-02-24 03:30:02,436 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-24 03:30:02,436 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-24 03:30:02,436 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-24 03:30:02,436 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-24 03:30:02,437 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-24 03:30:02,437 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2021-02-24 03:30:02,437 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2021-02-24 03:30:02,437 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2021-02-24 03:30:02,437 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-24 03:30:02,437 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-24 03:30:02,437 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-24 03:30:02,438 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-24 03:30:02,438 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-24 03:30:02,438 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-24 03:30:02,438 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-24 03:30:02,438 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-24 03:30:02,438 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-24 03:30:02,439 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-24 03:30:02,439 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-24 03:30:02,439 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-24 03:30:02,439 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-24 03:30:02,439 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-24 03:30:02,440 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-24 03:30:02,440 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-24 03:30:02,441 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-24 03:30:02,441 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-24 03:30:02,441 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-24 03:30:02,441 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-24 03:30:02,441 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-24 03:30:02,442 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-24 03:30:02,442 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-24 03:30:02,442 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-24 03:30:02,443 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-24 03:30:02,443 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-24 03:30:02,443 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-24 03:30:02,443 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2021-02-24 03:30:02,444 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2021-02-24 03:30:02,444 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-24 03:30:02,444 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-24 03:30:02,445 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-24 03:30:02,445 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-24 03:30:02,445 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-24 03:30:02,446 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-24 03:30:02,446 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-24 03:30:02,446 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-24 03:30:02,446 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-24 03:30:02,447 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-24 03:30:02,447 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-24 03:30:02,447 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-24 03:30:02,448 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-24 03:30:02,448 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-24 03:30:02,449 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2021-02-24 03:30:02,449 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2021-02-24 03:30:02,449 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-24 03:30:02,449 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-24 03:30:02,450 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-24 03:30:02,450 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-02-24 03:30:02,450 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2021-02-24 03:30:02,451 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2021-02-24 03:30:02,451 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2021-02-24 03:30:02,451 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2021-02-24 03:30:02,451 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-24 03:30:02,451 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-24 03:30:02,452 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-24 03:30:02,452 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-24 03:30:03,952 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-24 03:30:03,952 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-24 03:30:03,956 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 03:30:03 BoogieIcfgContainer [2021-02-24 03:30:03,957 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-24 03:30:03,958 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-24 03:30:03,959 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-24 03:30:03,962 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-24 03:30:03,962 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.02 03:30:01" (1/3) ... [2021-02-24 03:30:03,963 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fe04508 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 03:30:03, skipping insertion in model container [2021-02-24 03:30:03,963 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:30:02" (2/3) ... [2021-02-24 03:30:03,964 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fe04508 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 03:30:03, skipping insertion in model container [2021-02-24 03:30:03,964 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 03:30:03" (3/3) ... [2021-02-24 03:30:03,966 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product59.cil.c [2021-02-24 03:30:03,973 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-24 03:30:03,979 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-24 03:30:03,998 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-24 03:30:04,025 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-24 03:30:04,026 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-24 03:30:04,026 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-24 03:30:04,026 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-24 03:30:04,026 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-24 03:30:04,026 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-24 03:30:04,026 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-24 03:30:04,027 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-24 03:30:04,064 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states. [2021-02-24 03:30:04,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-02-24 03:30:04,086 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:30:04,087 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 03:30:04,088 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:30:04,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:30:04,094 INFO L82 PathProgramCache]: Analyzing trace with hash 1221408167, now seen corresponding path program 1 times [2021-02-24 03:30:04,103 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:30:04,104 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [542216962] [2021-02-24 03:30:04,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:30:04,189 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:30:04,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:30:04,569 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:30:04,570 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:30:04,572 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:30:04,572 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:30:05,011 WARN L202 SmtUtils]: Spent 422.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-24 03:30:05,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 03:30:05,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:30:05,126 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:30:05,127 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:30:05,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-24 03:30:05,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:30:05,165 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:30:05,166 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:30:05,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-24 03:30:05,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:30:05,175 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:30:05,176 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:30:05,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-24 03:30:05,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:30:05,182 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:30:05,183 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:30:05,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-24 03:30:05,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:30:05,187 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:30:05,188 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:30:05,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-24 03:30:05,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:30:05,195 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:30:05,198 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:30:05,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-24 03:30:05,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:30:05,207 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:30:05,209 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:30:05,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-02-24 03:30:05,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:30:05,217 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:30:05,218 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:30:05,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 03:30:05,284 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [542216962] [2021-02-24 03:30:05,286 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 03:30:05,286 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-24 03:30:05,287 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25084338] [2021-02-24 03:30:05,301 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-24 03:30:05,302 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 03:30:05,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-24 03:30:05,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-24 03:30:05,322 INFO L87 Difference]: Start difference. First operand 352 states. Second operand 3 states. [2021-02-24 03:30:07,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 03:30:07,314 INFO L93 Difference]: Finished difference Result 567 states and 669 transitions. [2021-02-24 03:30:07,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-24 03:30:07,316 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 158 [2021-02-24 03:30:07,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 03:30:07,335 INFO L225 Difference]: With dead ends: 567 [2021-02-24 03:30:07,335 INFO L226 Difference]: Without dead ends: 345 [2021-02-24 03:30:07,341 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-24 03:30:07,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2021-02-24 03:30:07,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 300. [2021-02-24 03:30:07,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 300 states. [2021-02-24 03:30:07,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 327 transitions. [2021-02-24 03:30:07,641 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 327 transitions. Word has length 158 [2021-02-24 03:30:07,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 03:30:07,645 INFO L480 AbstractCegarLoop]: Abstraction has 300 states and 327 transitions. [2021-02-24 03:30:07,646 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-24 03:30:07,646 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 327 transitions. [2021-02-24 03:30:07,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-02-24 03:30:07,659 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:30:07,659 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 03:30:07,660 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-24 03:30:07,660 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:30:07,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:30:07,661 INFO L82 PathProgramCache]: Analyzing trace with hash -1558389514, now seen corresponding path program 1 times [2021-02-24 03:30:07,662 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:30:07,663 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1346575833] [2021-02-24 03:30:07,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:30:07,670 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:30:07,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:30:07,812 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:30:07,812 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:30:07,813 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:30:07,814 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:30:07,817 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:30:07,818 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:30:08,134 WARN L202 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-24 03:30:08,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 03:30:08,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:30:08,179 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:30:08,179 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:30:08,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-24 03:30:08,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:30:08,212 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:30:08,213 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:30:08,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-24 03:30:08,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:30:08,216 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:30:08,216 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:30:08,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-24 03:30:08,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:30:08,219 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:30:08,220 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:30:08,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-24 03:30:08,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:30:08,223 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:30:08,224 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:30:08,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-02-24 03:30:08,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:30:08,230 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:30:08,230 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:30:08,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-02-24 03:30:08,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:30:08,234 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:30:08,235 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:30:08,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-02-24 03:30:08,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:30:08,238 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:30:08,238 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:30:08,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 03:30:08,276 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1346575833] [2021-02-24 03:30:08,276 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 03:30:08,277 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-24 03:30:08,277 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288972815] [2021-02-24 03:30:08,279 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-24 03:30:08,279 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 03:30:08,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-24 03:30:08,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-24 03:30:08,280 INFO L87 Difference]: Start difference. First operand 300 states and 327 transitions. Second operand 4 states. [2021-02-24 03:30:08,991 WARN L202 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-24 03:30:10,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 03:30:10,365 INFO L93 Difference]: Finished difference Result 477 states and 535 transitions. [2021-02-24 03:30:10,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-24 03:30:10,366 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 159 [2021-02-24 03:30:10,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 03:30:10,371 INFO L225 Difference]: With dead ends: 477 [2021-02-24 03:30:10,371 INFO L226 Difference]: Without dead ends: 328 [2021-02-24 03:30:10,374 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-24 03:30:10,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2021-02-24 03:30:10,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 290. [2021-02-24 03:30:10,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 290 states. [2021-02-24 03:30:10,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 314 transitions. [2021-02-24 03:30:10,495 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 314 transitions. Word has length 159 [2021-02-24 03:30:10,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 03:30:10,495 INFO L480 AbstractCegarLoop]: Abstraction has 290 states and 314 transitions. [2021-02-24 03:30:10,495 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-24 03:30:10,496 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 314 transitions. [2021-02-24 03:30:10,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-02-24 03:30:10,498 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:30:10,498 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 03:30:10,499 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-24 03:30:10,499 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:30:10,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:30:10,500 INFO L82 PathProgramCache]: Analyzing trace with hash 1682854002, now seen corresponding path program 1 times [2021-02-24 03:30:10,500 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:30:10,500 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1172066692] [2021-02-24 03:30:10,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:30:10,503 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:30:10,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:30:10,612 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:30:10,612 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:30:10,616 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:30:10,617 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:30:10,619 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:30:10,620 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:30:10,624 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:30:10,625 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:30:10,630 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:30:10,630 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 03:30:10,638 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:30:10,638 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 03:30:10,640 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:30:10,640 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 03:30:10,642 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:30:10,642 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:30:10,959 WARN L202 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-24 03:30:10,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 03:30:10,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:30:11,013 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:30:11,014 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:30:11,015 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:30:11,015 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 03:30:11,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-24 03:30:11,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:30:11,026 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:30:11,026 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:30:11,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-24 03:30:11,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:30:11,029 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:30:11,029 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:30:11,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-24 03:30:11,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:30:11,038 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:30:11,039 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:30:11,047 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:30:11,048 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 03:30:11,065 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-24 03:30:11,066 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-24 03:30:11,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-24 03:30:11,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:30:11,116 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:30:11,117 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:30:11,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-24 03:30:11,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:30:11,119 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:30:11,120 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:30:11,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-02-24 03:30:11,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:30:11,122 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:30:11,123 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:30:11,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-02-24 03:30:11,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:30:11,127 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:30:11,130 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:30:11,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 03:30:11,179 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1172066692] [2021-02-24 03:30:11,179 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 03:30:11,180 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-24 03:30:11,180 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589445544] [2021-02-24 03:30:11,181 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-24 03:30:11,181 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 03:30:11,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-24 03:30:11,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-24 03:30:11,182 INFO L87 Difference]: Start difference. First operand 290 states and 314 transitions. Second operand 9 states. [2021-02-24 03:30:11,754 WARN L202 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-24 03:30:12,225 WARN L202 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-24 03:30:12,580 WARN L202 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-24 03:30:12,988 WARN L202 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-24 03:30:13,367 WARN L202 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-24 03:30:13,717 WARN L202 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-24 03:30:14,761 WARN L202 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-24 03:30:17,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 03:30:17,873 INFO L93 Difference]: Finished difference Result 786 states and 899 transitions. [2021-02-24 03:30:17,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-24 03:30:17,874 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 168 [2021-02-24 03:30:17,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 03:30:17,881 INFO L225 Difference]: With dead ends: 786 [2021-02-24 03:30:17,881 INFO L226 Difference]: Without dead ends: 611 [2021-02-24 03:30:17,883 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2021-02-24 03:30:17,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 611 states. [2021-02-24 03:30:18,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 611 to 540. [2021-02-24 03:30:18,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 540 states. [2021-02-24 03:30:18,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 540 states to 540 states and 603 transitions. [2021-02-24 03:30:18,183 INFO L78 Accepts]: Start accepts. Automaton has 540 states and 603 transitions. Word has length 168 [2021-02-24 03:30:18,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 03:30:18,184 INFO L480 AbstractCegarLoop]: Abstraction has 540 states and 603 transitions. [2021-02-24 03:30:18,184 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-24 03:30:18,184 INFO L276 IsEmpty]: Start isEmpty. Operand 540 states and 603 transitions. [2021-02-24 03:30:18,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-02-24 03:30:18,188 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:30:18,189 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 03:30:18,189 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-24 03:30:18,189 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:30:18,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:30:18,190 INFO L82 PathProgramCache]: Analyzing trace with hash 1142831282, now seen corresponding path program 1 times [2021-02-24 03:30:18,190 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:30:18,190 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1553421235] [2021-02-24 03:30:18,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:30:18,194 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:30:18,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:30:18,265 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:30:18,265 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:30:18,268 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:30:18,269 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:30:18,269 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:30:18,270 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:30:18,270 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:30:18,271 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:30:18,271 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:30:18,272 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:30:18,272 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:30:18,273 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:30:18,277 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:30:18,277 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:30:18,282 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:30:18,283 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:30:18,648 WARN L202 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-24 03:30:18,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 03:30:18,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:30:18,710 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:30:18,711 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:30:18,712 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:30:18,713 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 03:30:18,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-24 03:30:18,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:30:18,724 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:30:18,725 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:30:18,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-24 03:30:18,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:30:18,728 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:30:18,728 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:30:18,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-24 03:30:18,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:30:18,732 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:30:18,732 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:30:18,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-24 03:30:18,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:30:18,735 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:30:18,736 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:30:18,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-02-24 03:30:18,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:30:18,760 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:30:18,761 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:30:18,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-02-24 03:30:18,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:30:18,765 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:30:18,765 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:30:18,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-02-24 03:30:18,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:30:18,770 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:30:18,771 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:30:18,771 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:30:18,772 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:30:18,784 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:30:18,785 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:30:18,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2021-02-24 03:30:18,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:30:18,807 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:30:18,807 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:30:18,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 03:30:18,881 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1553421235] [2021-02-24 03:30:18,881 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 03:30:18,882 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-24 03:30:18,882 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250672093] [2021-02-24 03:30:18,883 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-24 03:30:18,883 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 03:30:18,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-24 03:30:18,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-24 03:30:18,884 INFO L87 Difference]: Start difference. First operand 540 states and 603 transitions. Second operand 9 states. [2021-02-24 03:30:19,547 WARN L202 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-24 03:30:21,986 WARN L202 SmtUtils]: Spent 373.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-24 03:30:22,477 WARN L202 SmtUtils]: Spent 376.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-24 03:30:22,928 WARN L202 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-24 03:30:23,443 WARN L202 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-24 03:30:23,844 WARN L202 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-24 03:30:24,263 WARN L202 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-24 03:30:24,644 WARN L202 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-24 03:30:26,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 03:30:26,089 INFO L93 Difference]: Finished difference Result 1477 states and 1760 transitions. [2021-02-24 03:30:26,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-02-24 03:30:26,090 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 177 [2021-02-24 03:30:26,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 03:30:26,098 INFO L225 Difference]: With dead ends: 1477 [2021-02-24 03:30:26,098 INFO L226 Difference]: Without dead ends: 1052 [2021-02-24 03:30:26,101 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2021-02-24 03:30:26,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1052 states. [2021-02-24 03:30:26,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1052 to 948. [2021-02-24 03:30:26,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 948 states. [2021-02-24 03:30:26,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 948 states to 948 states and 1082 transitions. [2021-02-24 03:30:26,507 INFO L78 Accepts]: Start accepts. Automaton has 948 states and 1082 transitions. Word has length 177 [2021-02-24 03:30:26,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 03:30:26,508 INFO L480 AbstractCegarLoop]: Abstraction has 948 states and 1082 transitions. [2021-02-24 03:30:26,508 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-24 03:30:26,508 INFO L276 IsEmpty]: Start isEmpty. Operand 948 states and 1082 transitions. [2021-02-24 03:30:26,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-02-24 03:30:26,514 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:30:26,514 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 03:30:26,514 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-24 03:30:26,514 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:30:26,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:30:26,515 INFO L82 PathProgramCache]: Analyzing trace with hash -1523326519, now seen corresponding path program 1 times [2021-02-24 03:30:26,515 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:30:26,516 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1423852134] [2021-02-24 03:30:26,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:30:26,519 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:30:26,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:30:26,579 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:30:26,580 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:30:26,583 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:30:26,583 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:30:26,584 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:30:26,584 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:30:26,585 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:30:26,585 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:30:26,586 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:30:26,587 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:30:26,587 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:30:26,588 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:30:26,588 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:30:26,589 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:30:26,906 WARN L202 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-24 03:30:26,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 03:30:26,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:30:26,959 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:30:26,960 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:30:26,960 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:30:26,961 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:30:26,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-24 03:30:26,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:30:26,974 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:30:26,975 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:30:26,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-24 03:30:26,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:30:26,978 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:30:26,978 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:30:26,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-24 03:30:26,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:30:26,982 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:30:26,983 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:30:26,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-24 03:30:26,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:30:26,986 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:30:26,986 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:30:26,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-02-24 03:30:26,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:30:27,001 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:30:27,001 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:30:27,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-02-24 03:30:27,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:30:27,013 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:30:27,014 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:30:27,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-02-24 03:30:27,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:30:27,017 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:30:27,017 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:30:27,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-02-24 03:30:27,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:30:27,020 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:30:27,021 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:30:27,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2021-02-24 03:30:27,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:30:27,024 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:30:27,024 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:30:27,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 03:30:27,094 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1423852134] [2021-02-24 03:30:27,094 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 03:30:27,094 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-24 03:30:27,094 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361226570] [2021-02-24 03:30:27,095 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-24 03:30:27,095 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 03:30:27,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-24 03:30:27,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-24 03:30:27,096 INFO L87 Difference]: Start difference. First operand 948 states and 1082 transitions. Second operand 6 states. [2021-02-24 03:30:27,710 WARN L202 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-24 03:30:30,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 03:30:30,458 INFO L93 Difference]: Finished difference Result 2109 states and 2519 transitions. [2021-02-24 03:30:30,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-02-24 03:30:30,459 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 182 [2021-02-24 03:30:30,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 03:30:30,468 INFO L225 Difference]: With dead ends: 2109 [2021-02-24 03:30:30,468 INFO L226 Difference]: Without dead ends: 1276 [2021-02-24 03:30:30,472 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-02-24 03:30:30,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1276 states. [2021-02-24 03:30:31,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1276 to 1179. [2021-02-24 03:30:31,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1179 states. [2021-02-24 03:30:31,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1179 states to 1179 states and 1342 transitions. [2021-02-24 03:30:31,125 INFO L78 Accepts]: Start accepts. Automaton has 1179 states and 1342 transitions. Word has length 182 [2021-02-24 03:30:31,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 03:30:31,125 INFO L480 AbstractCegarLoop]: Abstraction has 1179 states and 1342 transitions. [2021-02-24 03:30:31,125 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-24 03:30:31,126 INFO L276 IsEmpty]: Start isEmpty. Operand 1179 states and 1342 transitions. [2021-02-24 03:30:31,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-02-24 03:30:31,130 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:30:31,131 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 03:30:31,131 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-24 03:30:31,132 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:30:31,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:30:31,132 INFO L82 PathProgramCache]: Analyzing trace with hash -751773284, now seen corresponding path program 1 times [2021-02-24 03:30:31,133 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:30:31,133 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [318882957] [2021-02-24 03:30:31,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:30:31,136 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:30:31,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-24 03:30:31,253 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-24 03:30:31,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-24 03:30:31,345 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-24 03:30:31,605 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-24 03:30:31,605 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-24 03:30:31,606 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-24 03:30:31,632 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.02 03:30:31 BoogieIcfgContainer [2021-02-24 03:30:31,632 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-24 03:30:31,634 INFO L168 Benchmark]: Toolchain (without parser) took 30081.86 ms. Allocated memory was 167.8 MB in the beginning and 625.0 MB in the end (delta: 457.2 MB). Free memory was 142.6 MB in the beginning and 333.6 MB in the end (delta: -191.0 MB). Peak memory consumption was 267.1 MB. Max. memory is 8.0 GB. [2021-02-24 03:30:31,634 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 167.8 MB. Free memory was 140.8 MB in the beginning and 140.7 MB in the end (delta: 101.5 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-02-24 03:30:31,635 INFO L168 Benchmark]: CACSL2BoogieTranslator took 572.67 ms. Allocated memory is still 167.8 MB. Free memory was 141.3 MB in the beginning and 119.4 MB in the end (delta: 21.9 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2021-02-24 03:30:31,636 INFO L168 Benchmark]: Boogie Preprocessor took 128.13 ms. Allocated memory is still 167.8 MB. Free memory was 119.4 MB in the beginning and 115.3 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2021-02-24 03:30:31,636 INFO L168 Benchmark]: RCFGBuilder took 1690.09 ms. Allocated memory was 167.8 MB in the beginning and 205.5 MB in the end (delta: 37.7 MB). Free memory was 115.3 MB in the beginning and 135.8 MB in the end (delta: -20.5 MB). Peak memory consumption was 28.1 MB. Max. memory is 8.0 GB. [2021-02-24 03:30:31,637 INFO L168 Benchmark]: TraceAbstraction took 27674.16 ms. Allocated memory was 205.5 MB in the beginning and 625.0 MB in the end (delta: 419.4 MB). Free memory was 135.8 MB in the beginning and 333.6 MB in the end (delta: -197.7 MB). Peak memory consumption was 222.2 MB. Max. memory is 8.0 GB. [2021-02-24 03:30:31,640 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 167.8 MB. Free memory was 140.8 MB in the beginning and 140.7 MB in the end (delta: 101.5 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 572.67 ms. Allocated memory is still 167.8 MB. Free memory was 141.3 MB in the beginning and 119.4 MB in the end (delta: 21.9 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 128.13 ms. Allocated memory is still 167.8 MB. Free memory was 119.4 MB in the beginning and 115.3 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1690.09 ms. Allocated memory was 167.8 MB in the beginning and 205.5 MB in the end (delta: 37.7 MB). Free memory was 115.3 MB in the beginning and 135.8 MB in the end (delta: -20.5 MB). Peak memory consumption was 28.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 27674.16 ms. Allocated memory was 205.5 MB in the beginning and 625.0 MB in the end (delta: 419.4 MB). Free memory was 135.8 MB in the beginning and 333.6 MB in the end (delta: -197.7 MB). Peak memory consumption was 222.2 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 696]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L211] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L416] int waterLevel = 1; [L417] int methaneLevelCritical = 0; [L519] int cleanupTimeShifts = 4; [L771] int pumpRunning = 0; [L772] int systemActive = 1; [L598] int retValue_acc ; [L599] int tmp ; [L603] FCALL select_helpers() [L604] FCALL select_features() [L605] CALL, EXPR valid_product() [L647] int retValue_acc ; [L650] retValue_acc = 1 [L651] return (retValue_acc); [L605] RET, EXPR valid_product() [L605] tmp = valid_product() [L607] COND TRUE \read(tmp) [L609] FCALL setup() [L610] CALL runTest() [L589] CALL test() [L703] int splverifierCounter ; [L704] int tmp ; [L705] int tmp___0 ; [L706] int tmp___1 ; [L707] int tmp___2 ; [L710] splverifierCounter = 0 [L712] COND TRUE 1 [L714] COND TRUE splverifierCounter < 4 [L720] tmp = __VERIFIER_nondet_int() [L722] COND TRUE \read(tmp) [L724] CALL waterRise() [L434] COND TRUE waterLevel < 2 [L435] waterLevel = waterLevel + 1 [L724] RET waterRise() [L730] tmp___0 = __VERIFIER_nondet_int() [L732] COND FALSE !(\read(tmp___0)) [L740] tmp___2 = __VERIFIER_nondet_int() [L742] COND FALSE !(\read(tmp___2)) [L746] tmp___1 = __VERIFIER_nondet_int() [L748] COND TRUE \read(tmp___1) [L750] CALL stopSystem() [L989] COND FALSE !(\read(pumpRunning)) [L996] systemActive = 0 [L750] RET stopSystem() [L757] CALL timeShift() [L778] COND FALSE !(\read(pumpRunning)) [L785] COND FALSE !(\read(systemActive)) [L793] CALL __utac_acc__Specification3_spec__1() [L659] int tmp ; [L660] int tmp___0 ; [L661] int tmp___1 ; [L665] CALL, EXPR isMethaneLevelCritical() [L455] int retValue_acc ; [L458] retValue_acc = methaneLevelCritical [L459] return (retValue_acc); [L665] RET, EXPR isMethaneLevelCritical() [L665] tmp = isMethaneLevelCritical() [L667] COND FALSE !(\read(tmp)) [L671] CALL, EXPR getWaterLevel() [L487] int retValue_acc ; [L490] retValue_acc = waterLevel [L491] return (retValue_acc); [L671] RET, EXPR getWaterLevel() [L671] tmp___0 = getWaterLevel() [L673] COND TRUE tmp___0 == 2 [L675] CALL, EXPR isPumpRunning() [L903] int retValue_acc ; [L906] retValue_acc = pumpRunning [L907] return (retValue_acc); [L675] RET, EXPR isPumpRunning() [L675] tmp___1 = isPumpRunning() [L677] COND FALSE !(\read(tmp___1)) [L681] CALL __automaton_fail() [L696] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 43 procedures, 667 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 27.5s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 21.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1420 SDtfs, 2115 SDslu, 1630 SDs, 0 SdLazy, 4231 SolverSat, 659 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 11.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 148 GetRequests, 104 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 7.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1179occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.7s AutomataMinimizationTime, 5 MinimizatonAttempts, 355 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, 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...