/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_product35.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-24 03:29:00,441 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-24 03:29:00,444 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-24 03:29:00,481 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-24 03:29:00,482 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-24 03:29:00,483 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-24 03:29:00,485 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-24 03:29:00,487 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-24 03:29:00,489 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-24 03:29:00,490 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-24 03:29:00,491 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-24 03:29:00,493 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-24 03:29:00,493 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-24 03:29:00,495 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-24 03:29:00,498 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-24 03:29:00,499 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-24 03:29:00,503 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-24 03:29:00,508 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-24 03:29:00,510 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-24 03:29:00,516 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-24 03:29:00,520 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-24 03:29:00,523 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-24 03:29:00,525 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-24 03:29:00,529 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-24 03:29:00,548 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-24 03:29:00,549 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-24 03:29:00,549 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-24 03:29:00,553 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-24 03:29:00,554 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-24 03:29:00,555 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-24 03:29:00,555 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-24 03:29:00,556 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-24 03:29:00,557 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-24 03:29:00,558 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-24 03:29:00,562 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-24 03:29:00,562 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-24 03:29:00,563 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-24 03:29:00,564 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-24 03:29:00,564 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-24 03:29:00,565 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-24 03:29:00,567 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-24 03:29:00,568 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 03:29:00,593 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-24 03:29:00,593 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-24 03:29:00,598 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-24 03:29:00,598 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-24 03:29:00,599 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-24 03:29:00,599 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-24 03:29:00,599 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-24 03:29:00,599 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-24 03:29:00,599 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-24 03:29:00,600 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-24 03:29:00,601 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-24 03:29:00,601 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-24 03:29:00,601 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-24 03:29:00,602 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-24 03:29:00,602 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-24 03:29:00,602 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-24 03:29:00,602 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-24 03:29:00,602 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-24 03:29:00,602 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-24 03:29:00,603 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-24 03:29:00,603 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-24 03:29:00,603 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-24 03:29:00,603 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-24 03:29:00,603 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-24 03:29:00,967 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-24 03:29:00,992 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-24 03:29:00,995 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-24 03:29:00,997 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-24 03:29:00,997 INFO L275 PluginConnector]: CDTParser initialized [2021-02-24 03:29:00,998 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product35.cil.c [2021-02-24 03:29:01,084 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a08995565/6008fc082e54497ba3b1a428bacfe64e/FLAGa4563acc5 [2021-02-24 03:29:01,764 INFO L306 CDTParser]: Found 1 translation units. [2021-02-24 03:29:01,765 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product35.cil.c [2021-02-24 03:29:01,787 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a08995565/6008fc082e54497ba3b1a428bacfe64e/FLAGa4563acc5 [2021-02-24 03:29:02,079 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a08995565/6008fc082e54497ba3b1a428bacfe64e [2021-02-24 03:29:02,083 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-24 03:29:02,098 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-24 03:29:02,103 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-24 03:29:02,103 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-24 03:29:02,107 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-24 03:29:02,108 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 03:29:02" (1/1) ... [2021-02-24 03:29:02,110 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@203a6926 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:29:02, skipping insertion in model container [2021-02-24 03:29:02,110 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 03:29:02" (1/1) ... [2021-02-24 03:29:02,120 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-24 03:29:02,192 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-24 03:29:02,435 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_product35.cil.c[7938,7951] [2021-02-24 03:29:02,509 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 03:29:02,523 INFO L203 MainTranslator]: Completed pre-run [2021-02-24 03:29:02,568 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_product35.cil.c[7938,7951] [2021-02-24 03:29:02,624 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 03:29:02,692 INFO L208 MainTranslator]: Completed translation [2021-02-24 03:29:02,692 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:29:02 WrapperNode [2021-02-24 03:29:02,692 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-24 03:29:02,694 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-24 03:29:02,694 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-24 03:29:02,695 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-24 03:29:02,708 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:29:02" (1/1) ... [2021-02-24 03:29:02,709 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:29:02" (1/1) ... [2021-02-24 03:29:02,728 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:29:02" (1/1) ... [2021-02-24 03:29:02,728 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:29:02" (1/1) ... [2021-02-24 03:29:02,762 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:29:02" (1/1) ... [2021-02-24 03:29:02,773 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:29:02" (1/1) ... [2021-02-24 03:29:02,780 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:29:02" (1/1) ... [2021-02-24 03:29:02,800 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-24 03:29:02,801 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-24 03:29:02,802 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-24 03:29:02,802 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-24 03:29:02,805 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:29:02" (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 03:29:02,950 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-24 03:29:02,950 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-24 03:29:02,950 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-24 03:29:02,950 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-24 03:29:02,950 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-24 03:29:02,951 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-24 03:29:02,951 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-02-24 03:29:02,951 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-24 03:29:02,951 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-24 03:29:02,951 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-24 03:29:02,951 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-24 03:29:02,952 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-24 03:29:02,952 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-24 03:29:02,952 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2021-02-24 03:29:02,952 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2021-02-24 03:29:02,952 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2021-02-24 03:29:02,952 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-24 03:29:02,953 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-24 03:29:02,953 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-24 03:29:02,953 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-24 03:29:02,953 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-24 03:29:02,953 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-24 03:29:02,953 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-24 03:29:02,954 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-24 03:29:02,954 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-24 03:29:02,954 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-24 03:29:02,954 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-24 03:29:02,954 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2021-02-24 03:29:02,954 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-24 03:29:02,955 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-24 03:29:02,955 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-24 03:29:02,955 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-24 03:29:02,955 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-24 03:29:02,955 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-24 03:29:02,955 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-24 03:29:02,956 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-24 03:29:02,956 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-24 03:29:02,956 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-24 03:29:02,956 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-24 03:29:02,956 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-24 03:29:02,956 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-24 03:29:02,957 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-24 03:29:02,957 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-24 03:29:02,957 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-24 03:29:02,957 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-24 03:29:02,957 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-24 03:29:02,957 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-24 03:29:02,958 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2021-02-24 03:29:02,958 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-24 03:29:02,958 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-24 03:29:02,958 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-24 03:29:02,958 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-24 03:29:02,958 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-24 03:29:02,958 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-24 03:29:02,959 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2021-02-24 03:29:02,959 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-24 03:29:02,959 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-24 03:29:02,959 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-24 03:29:02,959 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-24 03:29:02,959 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2021-02-24 03:29:02,959 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-24 03:29:02,959 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-02-24 03:29:02,960 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2021-02-24 03:29:02,960 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-24 03:29:02,960 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-24 03:29:02,960 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-24 03:29:02,960 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-24 03:29:02,960 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-24 03:29:02,961 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-24 03:29:02,961 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-24 03:29:02,961 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-24 03:29:02,961 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-24 03:29:02,961 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-24 03:29:02,961 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-24 03:29:02,961 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-24 03:29:02,962 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-24 03:29:02,962 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-24 03:29:02,962 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-24 03:29:02,962 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-24 03:29:02,962 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-24 03:29:02,962 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-24 03:29:02,963 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-24 03:29:02,963 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-24 03:29:02,963 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-24 03:29:02,963 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-24 03:29:02,963 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-24 03:29:02,963 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-24 03:29:02,963 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-24 03:29:02,964 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-24 03:29:02,964 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-24 03:29:02,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-24 03:29:02,964 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-24 03:29:04,225 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-24 03:29:04,225 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-24 03:29:04,228 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 03:29:04 BoogieIcfgContainer [2021-02-24 03:29:04,229 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-24 03:29:04,230 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-24 03:29:04,231 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-24 03:29:04,234 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-24 03:29:04,235 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.02 03:29:02" (1/3) ... [2021-02-24 03:29:04,235 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@114661ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 03:29:04, skipping insertion in model container [2021-02-24 03:29:04,236 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:29:02" (2/3) ... [2021-02-24 03:29:04,236 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@114661ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 03:29:04, skipping insertion in model container [2021-02-24 03:29:04,236 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 03:29:04" (3/3) ... [2021-02-24 03:29:04,238 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product35.cil.c [2021-02-24 03:29:04,245 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-24 03:29:04,250 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-24 03:29:04,269 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-24 03:29:04,293 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-24 03:29:04,293 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-24 03:29:04,294 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-24 03:29:04,294 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-24 03:29:04,294 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-24 03:29:04,294 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-24 03:29:04,294 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-24 03:29:04,294 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-24 03:29:04,317 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states. [2021-02-24 03:29:04,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-02-24 03:29:04,338 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:29:04,339 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 03:29:04,340 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:29:04,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:29:04,346 INFO L82 PathProgramCache]: Analyzing trace with hash 817882401, now seen corresponding path program 1 times [2021-02-24 03:29:04,356 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:29:04,356 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [371886404] [2021-02-24 03:29:04,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:29:04,440 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:29:04,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:29:04,842 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:04,843 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:29:04,844 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:04,844 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:29:05,119 WARN L202 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-24 03:29:05,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 03:29:05,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:29:05,199 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:05,200 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:29:05,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-24 03:29:05,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:29:05,228 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:05,228 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:29:05,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-24 03:29:05,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:29:05,237 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:05,238 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:29:05,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-24 03:29:05,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:29:05,251 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:05,254 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:29:05,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-24 03:29:05,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:29:05,259 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:05,263 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:29:05,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-24 03:29:05,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:29:05,274 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:05,276 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:29:05,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-24 03:29:05,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:29:05,280 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:05,281 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:29:05,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-02-24 03:29:05,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:29:05,284 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:05,285 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:29:05,341 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 03:29:05,343 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [371886404] [2021-02-24 03:29:05,345 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 03:29:05,345 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-24 03:29:05,346 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275570278] [2021-02-24 03:29:05,351 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-24 03:29:05,351 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 03:29:05,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-24 03:29:05,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-24 03:29:05,369 INFO L87 Difference]: Start difference. First operand 310 states. Second operand 3 states. [2021-02-24 03:29:07,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 03:29:07,002 INFO L93 Difference]: Finished difference Result 467 states and 554 transitions. [2021-02-24 03:29:07,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-24 03:29:07,003 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 158 [2021-02-24 03:29:07,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 03:29:07,019 INFO L225 Difference]: With dead ends: 467 [2021-02-24 03:29:07,020 INFO L226 Difference]: Without dead ends: 293 [2021-02-24 03:29:07,025 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-24 03:29:07,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2021-02-24 03:29:07,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 252. [2021-02-24 03:29:07,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 252 states. [2021-02-24 03:29:07,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 272 transitions. [2021-02-24 03:29:07,192 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 272 transitions. Word has length 158 [2021-02-24 03:29:07,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 03:29:07,194 INFO L480 AbstractCegarLoop]: Abstraction has 252 states and 272 transitions. [2021-02-24 03:29:07,194 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-24 03:29:07,194 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 272 transitions. [2021-02-24 03:29:07,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-02-24 03:29:07,198 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:29:07,198 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 03:29:07,199 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-24 03:29:07,199 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:29:07,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:29:07,200 INFO L82 PathProgramCache]: Analyzing trace with hash 1745712216, now seen corresponding path program 1 times [2021-02-24 03:29:07,200 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:29:07,200 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2126398609] [2021-02-24 03:29:07,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:29:07,204 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:29:07,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:29:07,350 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:07,350 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:29:07,354 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:07,355 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:29:07,360 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:07,361 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:29:07,714 WARN L202 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-24 03:29:07,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 03:29:07,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:29:07,757 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:07,758 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:29:07,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-24 03:29:07,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:29:07,770 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:07,770 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:29:07,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-24 03:29:07,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:29:07,773 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:07,774 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:29:07,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-24 03:29:07,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:29:07,777 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:07,779 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:29:07,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-24 03:29:07,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:29:07,781 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:07,782 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:29:07,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-02-24 03:29:07,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:29:07,785 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:07,785 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:29:07,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-02-24 03:29:07,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:29:07,790 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:07,790 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:29:07,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-02-24 03:29:07,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:29:07,793 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:07,794 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:29:07,830 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 03:29:07,830 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2126398609] [2021-02-24 03:29:07,830 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 03:29:07,831 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-24 03:29:07,831 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000234264] [2021-02-24 03:29:07,833 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-24 03:29:07,833 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 03:29:07,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-24 03:29:07,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-24 03:29:07,834 INFO L87 Difference]: Start difference. First operand 252 states and 272 transitions. Second operand 4 states. [2021-02-24 03:29:08,578 WARN L202 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-24 03:29:09,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 03:29:09,564 INFO L93 Difference]: Finished difference Result 374 states and 418 transitions. [2021-02-24 03:29:09,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-24 03:29:09,566 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 159 [2021-02-24 03:29:09,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 03:29:09,572 INFO L225 Difference]: With dead ends: 374 [2021-02-24 03:29:09,572 INFO L226 Difference]: Without dead ends: 276 [2021-02-24 03:29:09,574 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 03:29:09,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2021-02-24 03:29:09,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 242. [2021-02-24 03:29:09,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2021-02-24 03:29:09,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 259 transitions. [2021-02-24 03:29:09,685 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 259 transitions. Word has length 159 [2021-02-24 03:29:09,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 03:29:09,686 INFO L480 AbstractCegarLoop]: Abstraction has 242 states and 259 transitions. [2021-02-24 03:29:09,686 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-24 03:29:09,686 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 259 transitions. [2021-02-24 03:29:09,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-02-24 03:29:09,688 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:29:09,689 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 03:29:09,689 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-24 03:29:09,689 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:29:09,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:29:09,690 INFO L82 PathProgramCache]: Analyzing trace with hash 246814362, now seen corresponding path program 1 times [2021-02-24 03:29:09,690 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:29:09,690 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [966725028] [2021-02-24 03:29:09,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:29:09,694 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:29:09,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:29:09,815 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:09,816 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:29:09,820 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:09,821 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:29:09,821 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:09,822 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:29:09,826 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:09,827 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:29:09,832 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:09,833 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 03:29:09,839 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:09,840 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 03:29:09,840 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:09,841 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 03:29:09,842 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:09,843 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:29:10,141 WARN L202 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-24 03:29:10,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 03:29:10,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:29:10,200 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:10,200 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:29:10,201 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:10,202 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 03:29:10,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-24 03:29:10,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:29:10,249 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:10,249 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:29:10,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-24 03:29:10,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:29:10,252 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:10,253 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:29:10,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-24 03:29:10,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:29:10,261 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:10,262 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:29:10,270 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:10,271 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 03:29:10,290 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-24 03:29:10,291 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-24 03:29:10,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-24 03:29:10,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:29:10,309 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:10,310 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:29:10,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-24 03:29:10,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:29:10,312 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:10,313 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:29:10,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-02-24 03:29:10,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:29:10,315 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:10,316 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:29:10,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-02-24 03:29:10,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:29:10,319 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:10,319 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:29:10,366 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 03:29:10,367 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [966725028] [2021-02-24 03:29:10,367 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 03:29:10,367 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-24 03:29:10,367 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257299140] [2021-02-24 03:29:10,368 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-24 03:29:10,368 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 03:29:10,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-24 03:29:10,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-24 03:29:10,369 INFO L87 Difference]: Start difference. First operand 242 states and 259 transitions. Second operand 9 states. [2021-02-24 03:29:10,948 WARN L202 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-24 03:29:11,400 WARN L202 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-24 03:29:11,785 WARN L202 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-24 03:29:12,172 WARN L202 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-24 03:29:12,521 WARN L202 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-24 03:29:12,904 WARN L202 SmtUtils]: Spent 357.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-24 03:29:13,999 WARN L202 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-24 03:29:16,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 03:29:16,050 INFO L93 Difference]: Finished difference Result 634 states and 724 transitions. [2021-02-24 03:29:16,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-24 03:29:16,051 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 168 [2021-02-24 03:29:16,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 03:29:16,060 INFO L225 Difference]: With dead ends: 634 [2021-02-24 03:29:16,060 INFO L226 Difference]: Without dead ends: 507 [2021-02-24 03:29:16,066 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2021-02-24 03:29:16,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2021-02-24 03:29:16,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 432. [2021-02-24 03:29:16,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 432 states. [2021-02-24 03:29:16,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432 states to 432 states and 477 transitions. [2021-02-24 03:29:16,329 INFO L78 Accepts]: Start accepts. Automaton has 432 states and 477 transitions. Word has length 168 [2021-02-24 03:29:16,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 03:29:16,330 INFO L480 AbstractCegarLoop]: Abstraction has 432 states and 477 transitions. [2021-02-24 03:29:16,330 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-24 03:29:16,330 INFO L276 IsEmpty]: Start isEmpty. Operand 432 states and 477 transitions. [2021-02-24 03:29:16,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-02-24 03:29:16,333 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:29:16,334 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] [2021-02-24 03:29:16,334 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-24 03:29:16,334 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:29:16,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:29:16,335 INFO L82 PathProgramCache]: Analyzing trace with hash -478507709, now seen corresponding path program 1 times [2021-02-24 03:29:16,335 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:29:16,335 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1261652497] [2021-02-24 03:29:16,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:29:16,338 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:29:16,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:29:16,409 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:16,410 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:29:16,413 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:16,413 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:29:16,414 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:16,415 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:29:16,416 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:16,416 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:29:16,417 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:16,417 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:29:16,418 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:16,418 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:29:16,684 WARN L202 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-24 03:29:16,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 03:29:16,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:29:16,771 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:16,772 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:29:16,772 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:16,773 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:29:16,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-24 03:29:16,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:29:16,790 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:16,791 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:29:16,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-24 03:29:16,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:29:16,793 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:16,794 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:29:16,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-24 03:29:16,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:29:16,797 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:16,797 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:29:16,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-24 03:29:16,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:29:16,801 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:16,801 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:29:16,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-02-24 03:29:16,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:29:16,814 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:16,815 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:29:16,815 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:16,816 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 03:29:16,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 03:29:16,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:29:16,826 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:16,826 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:29:16,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-02-24 03:29:16,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:29:16,829 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:16,830 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:29:16,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-02-24 03:29:16,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:29:16,832 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:16,832 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:29:16,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-02-24 03:29:16,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:29:16,835 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:16,835 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:29:16,910 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 03:29:16,911 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1261652497] [2021-02-24 03:29:16,911 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 03:29:16,911 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-24 03:29:16,912 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745821359] [2021-02-24 03:29:16,912 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-24 03:29:16,912 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 03:29:16,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-24 03:29:16,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-02-24 03:29:16,913 INFO L87 Difference]: Start difference. First operand 432 states and 477 transitions. Second operand 6 states. [2021-02-24 03:29:17,505 WARN L202 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-24 03:29:19,345 WARN L202 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-24 03:29:19,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 03:29:19,948 INFO L93 Difference]: Finished difference Result 1099 states and 1282 transitions. [2021-02-24 03:29:19,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-24 03:29:19,949 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 176 [2021-02-24 03:29:19,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 03:29:19,956 INFO L225 Difference]: With dead ends: 1099 [2021-02-24 03:29:19,956 INFO L226 Difference]: Without dead ends: 782 [2021-02-24 03:29:19,958 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2021-02-24 03:29:19,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 782 states. [2021-02-24 03:29:20,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 782 to 666. [2021-02-24 03:29:20,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 666 states. [2021-02-24 03:29:20,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 666 states to 666 states and 735 transitions. [2021-02-24 03:29:20,291 INFO L78 Accepts]: Start accepts. Automaton has 666 states and 735 transitions. Word has length 176 [2021-02-24 03:29:20,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 03:29:20,292 INFO L480 AbstractCegarLoop]: Abstraction has 666 states and 735 transitions. [2021-02-24 03:29:20,292 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-24 03:29:20,292 INFO L276 IsEmpty]: Start isEmpty. Operand 666 states and 735 transitions. [2021-02-24 03:29:20,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-02-24 03:29:20,295 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:29:20,295 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 03:29:20,295 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-24 03:29:20,296 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:29:20,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:29:20,296 INFO L82 PathProgramCache]: Analyzing trace with hash -1722740558, now seen corresponding path program 1 times [2021-02-24 03:29:20,297 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:29:20,297 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1631387726] [2021-02-24 03:29:20,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:29:20,300 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:29:20,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:29:20,373 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:20,376 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:29:20,380 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:20,380 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:29:20,385 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:20,385 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:29:20,386 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:20,386 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:29:20,387 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:20,387 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:29:20,388 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:20,389 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:29:20,394 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:20,394 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:29:20,399 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:20,400 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:29:20,805 WARN L202 SmtUtils]: Spent 388.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-24 03:29:20,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 03:29:20,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:29:20,866 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:20,867 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:29:20,867 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:20,868 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 03:29:20,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-24 03:29:20,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:29:20,882 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:20,883 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:29:20,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-24 03:29:20,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:29:20,887 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:20,888 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:29:20,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-24 03:29:20,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:29:20,892 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:20,893 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:29:20,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-24 03:29:20,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:29:20,896 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:20,897 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:29:20,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-02-24 03:29:20,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:29:20,920 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:20,921 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:29:20,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-02-24 03:29:20,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:29:20,924 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:20,924 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:29:20,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-02-24 03:29:20,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:29:20,928 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:20,929 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:29:20,929 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:20,929 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:29:20,941 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:20,942 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:29:20,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2021-02-24 03:29:20,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:29:20,962 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:20,963 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:29:21,037 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 03:29:21,038 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1631387726] [2021-02-24 03:29:21,038 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 03:29:21,038 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-24 03:29:21,039 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076043680] [2021-02-24 03:29:21,039 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-24 03:29:21,039 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 03:29:21,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-24 03:29:21,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-24 03:29:21,040 INFO L87 Difference]: Start difference. First operand 666 states and 735 transitions. Second operand 9 states. [2021-02-24 03:29:21,673 WARN L202 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-24 03:29:23,312 WARN L202 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-24 03:29:23,710 WARN L202 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-24 03:29:24,152 WARN L202 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-24 03:29:24,573 WARN L202 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-24 03:29:24,960 WARN L202 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-24 03:29:25,340 WARN L202 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-24 03:29:25,716 WARN L202 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-24 03:29:27,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 03:29:27,103 INFO L93 Difference]: Finished difference Result 1703 states and 1980 transitions. [2021-02-24 03:29:27,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-02-24 03:29:27,104 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 177 [2021-02-24 03:29:27,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 03:29:27,112 INFO L225 Difference]: With dead ends: 1703 [2021-02-24 03:29:27,112 INFO L226 Difference]: Without dead ends: 1152 [2021-02-24 03:29:27,115 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2021-02-24 03:29:27,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1152 states. [2021-02-24 03:29:27,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1152 to 1069. [2021-02-24 03:29:27,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1069 states. [2021-02-24 03:29:27,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1069 states to 1069 states and 1196 transitions. [2021-02-24 03:29:27,652 INFO L78 Accepts]: Start accepts. Automaton has 1069 states and 1196 transitions. Word has length 177 [2021-02-24 03:29:27,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 03:29:27,653 INFO L480 AbstractCegarLoop]: Abstraction has 1069 states and 1196 transitions. [2021-02-24 03:29:27,653 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-24 03:29:27,653 INFO L276 IsEmpty]: Start isEmpty. Operand 1069 states and 1196 transitions. [2021-02-24 03:29:27,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-02-24 03:29:27,657 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:29:27,658 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 03:29:27,658 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-24 03:29:27,658 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:29:27,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:29:27,659 INFO L82 PathProgramCache]: Analyzing trace with hash -1328316036, now seen corresponding path program 1 times [2021-02-24 03:29:27,659 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:29:27,659 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1674348895] [2021-02-24 03:29:27,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:29:27,663 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:29:27,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-24 03:29:27,741 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-24 03:29:27,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-24 03:29:27,820 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-24 03:29:28,011 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-24 03:29:28,011 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-24 03:29:28,013 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-24 03:29:28,037 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.02 03:29:28 BoogieIcfgContainer [2021-02-24 03:29:28,038 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-24 03:29:28,039 INFO L168 Benchmark]: Toolchain (without parser) took 25953.41 ms. Allocated memory was 163.6 MB in the beginning and 656.4 MB in the end (delta: 492.8 MB). Free memory was 138.4 MB in the beginning and 559.0 MB in the end (delta: -420.6 MB). Peak memory consumption was 73.3 MB. Max. memory is 8.0 GB. [2021-02-24 03:29:28,039 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 163.6 MB. Free memory is still 138.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-24 03:29:28,040 INFO L168 Benchmark]: CACSL2BoogieTranslator took 589.90 ms. Allocated memory is still 163.6 MB. Free memory was 137.1 MB in the beginning and 116.6 MB in the end (delta: 20.5 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. [2021-02-24 03:29:28,040 INFO L168 Benchmark]: Boogie Preprocessor took 106.90 ms. Allocated memory is still 163.6 MB. Free memory was 116.6 MB in the beginning and 112.8 MB in the end (delta: 3.8 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2021-02-24 03:29:28,041 INFO L168 Benchmark]: RCFGBuilder took 1427.36 ms. Allocated memory was 163.6 MB in the beginning and 203.4 MB in the end (delta: 39.8 MB). Free memory was 112.7 MB in the beginning and 133.9 MB in the end (delta: -21.3 MB). Peak memory consumption was 25.9 MB. Max. memory is 8.0 GB. [2021-02-24 03:29:28,041 INFO L168 Benchmark]: TraceAbstraction took 23807.18 ms. Allocated memory was 203.4 MB in the beginning and 656.4 MB in the end (delta: 453.0 MB). Free memory was 133.4 MB in the beginning and 559.0 MB in the end (delta: -425.6 MB). Peak memory consumption was 27.4 MB. Max. memory is 8.0 GB. [2021-02-24 03:29:28,043 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 163.6 MB. Free memory is still 138.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 589.90 ms. Allocated memory is still 163.6 MB. Free memory was 137.1 MB in the beginning and 116.6 MB in the end (delta: 20.5 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 106.90 ms. Allocated memory is still 163.6 MB. Free memory was 116.6 MB in the beginning and 112.8 MB in the end (delta: 3.8 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1427.36 ms. Allocated memory was 163.6 MB in the beginning and 203.4 MB in the end (delta: 39.8 MB). Free memory was 112.7 MB in the beginning and 133.9 MB in the end (delta: -21.3 MB). Peak memory consumption was 25.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 23807.18 ms. Allocated memory was 203.4 MB in the beginning and 656.4 MB in the end (delta: 453.0 MB). Free memory was 133.4 MB in the beginning and 559.0 MB in the end (delta: -425.6 MB). Peak memory consumption was 27.4 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 558]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L122] int pumpRunning = 0; [L123] int systemActive = 1; [L326] int cleanupTimeShifts = 4; [L425] int waterLevel = 1; [L426] int methaneLevelCritical = 0; [L732] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L402] int retValue_acc ; [L403] int tmp ; [L407] FCALL select_helpers() [L408] FCALL select_features() [L409] CALL, EXPR valid_product() [L545] int retValue_acc ; [L548] retValue_acc = 1 [L549] return (retValue_acc); [L409] RET, EXPR valid_product() [L409] tmp = valid_product() [L411] COND TRUE \read(tmp) [L413] FCALL setup() [L414] CALL runTest() [L393] CALL test() [L48] int splverifierCounter ; [L49] int tmp ; [L50] int tmp___0 ; [L51] int tmp___1 ; [L52] int tmp___2 ; [L55] splverifierCounter = 0 [L57] COND TRUE 1 [L59] COND TRUE splverifierCounter < 4 [L65] tmp = __VERIFIER_nondet_int() [L67] COND TRUE \read(tmp) [L69] CALL waterRise() [L443] COND TRUE waterLevel < 2 [L444] waterLevel = waterLevel + 1 [L69] RET waterRise() [L75] tmp___0 = __VERIFIER_nondet_int() [L77] COND FALSE !(\read(tmp___0)) [L85] tmp___2 = __VERIFIER_nondet_int() [L87] COND FALSE !(\read(tmp___2)) [L91] tmp___1 = __VERIFIER_nondet_int() [L93] COND TRUE \read(tmp___1) [L95] CALL stopSystem() [L278] COND FALSE !(\read(pumpRunning)) [L285] systemActive = 0 [L95] RET stopSystem() [L102] CALL timeShift() [L130] COND FALSE !(\read(pumpRunning)) [L137] COND FALSE !(\read(systemActive)) [L145] CALL __utac_acc__Specification3_spec__1() [L293] int tmp ; [L294] int tmp___0 ; [L295] int tmp___1 ; [L299] CALL, EXPR isMethaneLevelCritical() [L464] int retValue_acc ; [L467] retValue_acc = methaneLevelCritical [L468] return (retValue_acc); [L299] RET, EXPR isMethaneLevelCritical() [L299] tmp = isMethaneLevelCritical() [L301] COND FALSE !(\read(tmp)) [L305] CALL, EXPR getWaterLevel() [L496] int retValue_acc ; [L499] retValue_acc = waterLevel [L500] return (retValue_acc); [L305] RET, EXPR getWaterLevel() [L305] tmp___0 = getWaterLevel() [L307] COND TRUE tmp___0 == 2 [L309] CALL, EXPR isPumpRunning() [L211] int retValue_acc ; [L214] retValue_acc = pumpRunning [L215] return (retValue_acc); [L309] RET, EXPR isPumpRunning() [L309] tmp___1 = isPumpRunning() [L311] COND FALSE !(\read(tmp___1)) [L315] CALL __automaton_fail() [L558] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 627 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 23.7s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 18.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1199 SDtfs, 1753 SDslu, 1662 SDs, 0 SdLazy, 3339 SolverSat, 551 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 8.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 148 GetRequests, 104 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 7.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1069occurred 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: 1.3s AutomataMinimizationTime, 5 MinimizatonAttempts, 349 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...