/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_product24.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-22 01:02:56,774 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-22 01:02:56,778 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-22 01:02:56,831 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-22 01:02:56,832 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-22 01:02:56,836 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-22 01:02:56,840 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-22 01:02:56,848 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-22 01:02:56,851 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-22 01:02:56,859 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-22 01:02:56,861 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-22 01:02:56,863 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-22 01:02:56,863 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-22 01:02:56,867 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-22 01:02:56,869 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-22 01:02:56,871 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-22 01:02:56,876 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-22 01:02:56,878 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-22 01:02:56,886 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-22 01:02:56,890 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-22 01:02:56,895 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-22 01:02:56,897 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-22 01:02:56,898 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-22 01:02:56,901 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-22 01:02:56,908 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-22 01:02:56,913 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-22 01:02:56,913 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-22 01:02:56,914 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-22 01:02:56,915 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-22 01:02:56,917 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-22 01:02:56,918 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-22 01:02:56,919 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-22 01:02:56,921 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-22 01:02:56,922 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-22 01:02:56,923 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-22 01:02:56,923 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-22 01:02:56,924 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-22 01:02:56,924 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-22 01:02:56,925 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-22 01:02:56,926 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-22 01:02:56,927 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-22 01:02:56,928 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf [2021-02-22 01:02:56,952 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-22 01:02:56,953 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-22 01:02:56,957 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-22 01:02:56,957 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-22 01:02:56,957 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-22 01:02:56,957 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-22 01:02:56,957 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-22 01:02:56,958 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-22 01:02:56,958 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-22 01:02:56,958 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-22 01:02:56,959 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-22 01:02:56,960 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-22 01:02:56,960 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-22 01:02:56,960 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-22 01:02:56,961 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-22 01:02:56,961 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-22 01:02:56,961 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-22 01:02:56,961 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-22 01:02:56,961 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-22 01:02:56,962 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-22 01:02:56,962 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-22 01:02:56,962 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-22 01:02:56,962 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-22 01:02:56,962 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-22 01:02:57,401 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-22 01:02:57,429 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-22 01:02:57,432 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-22 01:02:57,434 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-22 01:02:57,434 INFO L275 PluginConnector]: CDTParser initialized [2021-02-22 01:02:57,435 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product24.cil.c [2021-02-22 01:02:57,511 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fea72460f/57b6441a48174b42bc0172f2b9fad27b/FLAGd534c4204 [2021-02-22 01:02:58,267 INFO L306 CDTParser]: Found 1 translation units. [2021-02-22 01:02:58,268 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product24.cil.c [2021-02-22 01:02:58,285 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fea72460f/57b6441a48174b42bc0172f2b9fad27b/FLAGd534c4204 [2021-02-22 01:02:58,515 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fea72460f/57b6441a48174b42bc0172f2b9fad27b [2021-02-22 01:02:58,518 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-22 01:02:58,533 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-22 01:02:58,535 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-22 01:02:58,535 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-22 01:02:58,540 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-22 01:02:58,541 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 01:02:58" (1/1) ... [2021-02-22 01:02:58,542 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63679461 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:02:58, skipping insertion in model container [2021-02-22 01:02:58,542 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 01:02:58" (1/1) ... [2021-02-22 01:02:58,551 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-22 01:02:58,594 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-22 01:02:58,759 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_product24.cil.c[1281,1294] [2021-02-22 01:02:58,880 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 01:02:58,900 INFO L203 MainTranslator]: Completed pre-run [2021-02-22 01:02:58,916 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_product24.cil.c[1281,1294] [2021-02-22 01:02:59,025 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 01:02:59,071 INFO L208 MainTranslator]: Completed translation [2021-02-22 01:02:59,072 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:02:59 WrapperNode [2021-02-22 01:02:59,072 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-22 01:02:59,073 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-22 01:02:59,074 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-22 01:02:59,075 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-22 01:02:59,088 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:02:59" (1/1) ... [2021-02-22 01:02:59,088 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:02:59" (1/1) ... [2021-02-22 01:02:59,124 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:02:59" (1/1) ... [2021-02-22 01:02:59,125 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:02:59" (1/1) ... [2021-02-22 01:02:59,185 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:02:59" (1/1) ... [2021-02-22 01:02:59,200 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:02:59" (1/1) ... [2021-02-22 01:02:59,205 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:02:59" (1/1) ... [2021-02-22 01:02:59,213 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-22 01:02:59,214 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-22 01:02:59,215 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-22 01:02:59,215 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-22 01:02:59,216 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:02:59" (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 [2021-02-22 01:02:59,322 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-22 01:02:59,323 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-22 01:02:59,323 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-22 01:02:59,323 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-22 01:02:59,323 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-22 01:02:59,323 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-22 01:02:59,323 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-02-22 01:02:59,323 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2021-02-22 01:02:59,323 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-22 01:02:59,324 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-22 01:02:59,324 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-22 01:02:59,324 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-22 01:02:59,324 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-22 01:02:59,324 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-22 01:02:59,325 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2021-02-22 01:02:59,325 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2021-02-22 01:02:59,325 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2021-02-22 01:02:59,325 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-22 01:02:59,325 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2021-02-22 01:02:59,326 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-22 01:02:59,326 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-22 01:02:59,326 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-22 01:02:59,326 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-22 01:02:59,326 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-22 01:02:59,326 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-22 01:02:59,327 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-22 01:02:59,327 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-22 01:02:59,327 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-22 01:02:59,327 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-22 01:02:59,327 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-22 01:02:59,327 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-22 01:02:59,327 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-22 01:02:59,328 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-22 01:02:59,328 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-22 01:02:59,328 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-22 01:02:59,328 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-22 01:02:59,328 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2021-02-22 01:02:59,328 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-22 01:02:59,328 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-22 01:02:59,329 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-22 01:02:59,329 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-22 01:02:59,329 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-22 01:02:59,340 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-22 01:02:59,340 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-22 01:02:59,341 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-22 01:02:59,341 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-22 01:02:59,341 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-22 01:02:59,341 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-22 01:02:59,341 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-22 01:02:59,341 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-22 01:02:59,341 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-22 01:02:59,341 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2021-02-22 01:02:59,353 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-22 01:02:59,353 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-22 01:02:59,353 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-22 01:02:59,354 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-22 01:02:59,354 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-22 01:02:59,354 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2021-02-22 01:02:59,354 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2021-02-22 01:02:59,354 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2021-02-22 01:02:59,354 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-22 01:02:59,354 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-02-22 01:02:59,355 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2021-02-22 01:02:59,355 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2021-02-22 01:02:59,355 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-22 01:02:59,355 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-22 01:02:59,355 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-22 01:02:59,355 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-22 01:02:59,355 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-22 01:02:59,356 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-22 01:02:59,356 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-22 01:02:59,356 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-22 01:02:59,359 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-22 01:02:59,359 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-22 01:02:59,359 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-22 01:02:59,360 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-22 01:02:59,360 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-22 01:02:59,360 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-22 01:02:59,360 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-22 01:02:59,360 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-22 01:02:59,360 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-22 01:02:59,361 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-22 01:02:59,361 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-22 01:02:59,361 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-22 01:02:59,361 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-22 01:02:59,361 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-22 01:02:59,361 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-22 01:02:59,362 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-22 01:02:59,362 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-22 01:02:59,362 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-22 01:02:59,362 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-22 01:02:59,362 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-22 01:02:59,362 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-22 01:02:59,362 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-22 01:02:59,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-22 01:02:59,363 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-22 01:03:00,664 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-22 01:03:00,664 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-22 01:03:00,667 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 01:03:00 BoogieIcfgContainer [2021-02-22 01:03:00,667 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-22 01:03:00,669 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-22 01:03:00,669 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-22 01:03:00,673 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-22 01:03:00,673 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.02 01:02:58" (1/3) ... [2021-02-22 01:03:00,674 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@711ec705 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 01:03:00, skipping insertion in model container [2021-02-22 01:03:00,674 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:02:59" (2/3) ... [2021-02-22 01:03:00,675 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@711ec705 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 01:03:00, skipping insertion in model container [2021-02-22 01:03:00,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 01:03:00" (3/3) ... [2021-02-22 01:03:00,676 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product24.cil.c [2021-02-22 01:03:00,684 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-22 01:03:00,689 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-22 01:03:00,709 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-22 01:03:00,734 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-22 01:03:00,734 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-22 01:03:00,734 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-22 01:03:00,735 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-22 01:03:00,735 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-22 01:03:00,735 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-22 01:03:00,735 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-22 01:03:00,735 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-22 01:03:00,758 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states. [2021-02-22 01:03:00,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-02-22 01:03:00,780 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:03:00,781 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] [2021-02-22 01:03:00,781 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:03:00,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:03:00,788 INFO L82 PathProgramCache]: Analyzing trace with hash -1944508064, now seen corresponding path program 1 times [2021-02-22 01:03:00,797 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:03:00,798 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [824946797] [2021-02-22 01:03:00,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:03:00,874 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:03:01,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:01,261 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:01,262 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:01,263 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:01,264 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:01,578 WARN L202 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-22 01:03:01,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:03:01,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:01,677 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:01,678 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:01,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-22 01:03:01,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:01,712 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:01,713 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:01,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-22 01:03:01,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:01,725 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:01,726 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:01,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-22 01:03:01,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:01,738 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:01,739 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:01,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-22 01:03:01,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:01,747 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:01,748 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:01,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-22 01:03:01,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:01,756 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:01,757 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:01,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-22 01:03:01,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:01,760 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:01,761 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:01,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-02-22 01:03:01,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:01,764 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:01,765 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:01,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 01:03:01,803 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [824946797] [2021-02-22 01:03:01,805 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:03:01,805 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-22 01:03:01,805 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453530592] [2021-02-22 01:03:01,810 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-22 01:03:01,811 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:03:01,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-22 01:03:01,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-22 01:03:01,827 INFO L87 Difference]: Start difference. First operand 322 states. Second operand 3 states. [2021-02-22 01:03:03,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:03:03,608 INFO L93 Difference]: Finished difference Result 506 states and 605 transitions. [2021-02-22 01:03:03,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-22 01:03:03,613 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 158 [2021-02-22 01:03:03,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:03:03,648 INFO L225 Difference]: With dead ends: 506 [2021-02-22 01:03:03,648 INFO L226 Difference]: Without dead ends: 314 [2021-02-22 01:03:03,659 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-22 01:03:03,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2021-02-22 01:03:03,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 270. [2021-02-22 01:03:03,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 270 states. [2021-02-22 01:03:03,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 295 transitions. [2021-02-22 01:03:03,888 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 295 transitions. Word has length 158 [2021-02-22 01:03:03,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:03:03,891 INFO L480 AbstractCegarLoop]: Abstraction has 270 states and 295 transitions. [2021-02-22 01:03:03,892 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-22 01:03:03,892 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 295 transitions. [2021-02-22 01:03:03,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-02-22 01:03:03,903 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:03:03,903 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] [2021-02-22 01:03:03,904 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-22 01:03:03,904 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:03:03,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:03:03,906 INFO L82 PathProgramCache]: Analyzing trace with hash -1109238629, now seen corresponding path program 1 times [2021-02-22 01:03:03,906 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:03:03,908 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1957260900] [2021-02-22 01:03:03,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:03:03,913 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:03:04,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:04,065 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:04,066 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:04,067 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:04,067 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:03:04,073 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:04,073 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:04,410 WARN L202 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-22 01:03:04,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:03:04,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:04,455 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:04,456 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:04,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-22 01:03:04,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:04,464 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:04,465 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:04,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-22 01:03:04,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:04,468 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:04,468 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:04,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-22 01:03:04,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:04,471 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:04,472 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:04,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-22 01:03:04,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:04,475 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:04,475 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:04,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-02-22 01:03:04,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:04,478 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:04,479 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:04,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-02-22 01:03:04,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:04,482 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:04,483 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:04,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-02-22 01:03:04,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:04,486 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:04,486 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:04,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 01:03:04,523 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1957260900] [2021-02-22 01:03:04,523 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:03:04,523 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-22 01:03:04,524 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113213089] [2021-02-22 01:03:04,525 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-22 01:03:04,525 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:03:04,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-22 01:03:04,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-22 01:03:04,526 INFO L87 Difference]: Start difference. First operand 270 states and 295 transitions. Second operand 4 states. [2021-02-22 01:03:05,271 WARN L202 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-22 01:03:06,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:03:06,456 INFO L93 Difference]: Finished difference Result 412 states and 467 transitions. [2021-02-22 01:03:06,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-22 01:03:06,457 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 159 [2021-02-22 01:03:06,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:03:06,461 INFO L225 Difference]: With dead ends: 412 [2021-02-22 01:03:06,461 INFO L226 Difference]: Without dead ends: 297 [2021-02-22 01:03:06,463 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 [2021-02-22 01:03:06,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2021-02-22 01:03:06,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 260. [2021-02-22 01:03:06,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 260 states. [2021-02-22 01:03:06,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 282 transitions. [2021-02-22 01:03:06,590 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 282 transitions. Word has length 159 [2021-02-22 01:03:06,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:03:06,590 INFO L480 AbstractCegarLoop]: Abstraction has 260 states and 282 transitions. [2021-02-22 01:03:06,591 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-22 01:03:06,591 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 282 transitions. [2021-02-22 01:03:06,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2021-02-22 01:03:06,594 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:03:06,594 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] [2021-02-22 01:03:06,594 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-22 01:03:06,594 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:03:06,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:03:06,595 INFO L82 PathProgramCache]: Analyzing trace with hash 33539817, now seen corresponding path program 1 times [2021-02-22 01:03:06,596 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:03:06,596 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1258340551] [2021-02-22 01:03:06,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:03:06,600 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:03:06,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:06,688 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:06,689 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:06,690 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:06,690 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:03:06,694 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:06,694 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:03:06,699 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:06,700 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:06,701 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:06,702 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-22 01:03:06,707 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:06,708 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:07,023 WARN L202 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-22 01:03:07,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:03:07,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:07,060 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:07,060 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:07,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-22 01:03:07,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:07,067 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:07,067 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:07,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-22 01:03:07,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:07,070 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:07,070 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:07,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-22 01:03:07,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:07,077 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:07,078 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:07,086 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:07,087 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:03:07,100 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:07,100 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:03:07,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-22 01:03:07,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:07,116 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:07,116 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:07,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-02-22 01:03:07,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:07,132 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:07,132 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:03:07,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-02-22 01:03:07,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:07,147 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:07,147 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:07,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-02-22 01:03:07,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:07,150 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:07,151 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:07,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-02-22 01:03:07,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:07,156 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:07,157 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:07,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 01:03:07,215 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1258340551] [2021-02-22 01:03:07,215 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:03:07,215 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-22 01:03:07,215 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616723507] [2021-02-22 01:03:07,216 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-22 01:03:07,216 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:03:07,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-22 01:03:07,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-22 01:03:07,217 INFO L87 Difference]: Start difference. First operand 260 states and 282 transitions. Second operand 10 states. [2021-02-22 01:03:07,843 WARN L202 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-22 01:03:08,317 WARN L202 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-22 01:03:08,699 WARN L202 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-22 01:03:09,087 WARN L202 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-22 01:03:09,457 WARN L202 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-22 01:03:09,857 WARN L202 SmtUtils]: Spent 374.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-22 01:03:10,983 WARN L202 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-22 01:03:13,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:03:13,815 INFO L93 Difference]: Finished difference Result 716 states and 838 transitions. [2021-02-22 01:03:13,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-02-22 01:03:13,816 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 172 [2021-02-22 01:03:13,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:03:13,821 INFO L225 Difference]: With dead ends: 716 [2021-02-22 01:03:13,821 INFO L226 Difference]: Without dead ends: 571 [2021-02-22 01:03:13,822 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2021-02-22 01:03:13,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2021-02-22 01:03:14,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 476. [2021-02-22 01:03:14,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 476 states. [2021-02-22 01:03:14,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 535 transitions. [2021-02-22 01:03:14,070 INFO L78 Accepts]: Start accepts. Automaton has 476 states and 535 transitions. Word has length 172 [2021-02-22 01:03:14,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:03:14,070 INFO L480 AbstractCegarLoop]: Abstraction has 476 states and 535 transitions. [2021-02-22 01:03:14,071 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-22 01:03:14,071 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states and 535 transitions. [2021-02-22 01:03:14,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-02-22 01:03:14,074 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:03:14,074 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-22 01:03:14,075 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-22 01:03:14,075 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:03:14,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:03:14,076 INFO L82 PathProgramCache]: Analyzing trace with hash 43233474, now seen corresponding path program 1 times [2021-02-22 01:03:14,076 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:03:14,076 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [335162909] [2021-02-22 01:03:14,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:03:14,079 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:03:14,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:14,156 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:14,157 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:03:14,160 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:14,161 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:03:14,161 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:14,161 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:03:14,162 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:14,162 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:03:14,163 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:14,163 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:03:14,164 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:14,164 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:03:14,168 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:14,169 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:03:14,174 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:14,175 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:14,471 WARN L202 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-22 01:03:14,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:03:14,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:14,520 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:14,520 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:14,521 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:14,522 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-22 01:03:14,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-22 01:03:14,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:14,530 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:14,531 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:14,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-22 01:03:14,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:14,534 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:14,534 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:14,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-22 01:03:14,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:14,538 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:14,539 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:14,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-22 01:03:14,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:14,542 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:14,542 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:14,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-02-22 01:03:14,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:14,558 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:14,559 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:14,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-02-22 01:03:14,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:14,562 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:14,563 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:14,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-02-22 01:03:14,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:14,567 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:14,568 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:14,568 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:14,569 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:03:14,579 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:14,580 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:03:14,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2021-02-22 01:03:14,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:14,593 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:14,593 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:14,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 01:03:14,668 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [335162909] [2021-02-22 01:03:14,668 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:03:14,669 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-22 01:03:14,669 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725273751] [2021-02-22 01:03:14,670 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-22 01:03:14,670 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:03:14,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-22 01:03:14,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-22 01:03:14,671 INFO L87 Difference]: Start difference. First operand 476 states and 535 transitions. Second operand 9 states. [2021-02-22 01:03:15,441 WARN L202 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-22 01:03:17,711 WARN L202 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-22 01:03:18,120 WARN L202 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-22 01:03:18,593 WARN L202 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-22 01:03:19,032 WARN L202 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-22 01:03:19,396 WARN L202 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-22 01:03:19,755 WARN L202 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-22 01:03:20,144 WARN L202 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-22 01:03:21,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:03:21,283 INFO L93 Difference]: Finished difference Result 1284 states and 1548 transitions. [2021-02-22 01:03:21,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-02-22 01:03:21,288 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 177 [2021-02-22 01:03:21,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:03:21,295 INFO L225 Difference]: With dead ends: 1284 [2021-02-22 01:03:21,296 INFO L226 Difference]: Without dead ends: 923 [2021-02-22 01:03:21,298 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2021-02-22 01:03:21,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 923 states. [2021-02-22 01:03:21,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 923 to 820. [2021-02-22 01:03:21,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 820 states. [2021-02-22 01:03:21,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 820 states to 820 states and 948 transitions. [2021-02-22 01:03:21,640 INFO L78 Accepts]: Start accepts. Automaton has 820 states and 948 transitions. Word has length 177 [2021-02-22 01:03:21,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:03:21,641 INFO L480 AbstractCegarLoop]: Abstraction has 820 states and 948 transitions. [2021-02-22 01:03:21,641 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-22 01:03:21,641 INFO L276 IsEmpty]: Start isEmpty. Operand 820 states and 948 transitions. [2021-02-22 01:03:21,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-02-22 01:03:21,646 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:03:21,646 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] [2021-02-22 01:03:21,646 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-22 01:03:21,647 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:03:21,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:03:21,647 INFO L82 PathProgramCache]: Analyzing trace with hash -1241876197, now seen corresponding path program 1 times [2021-02-22 01:03:21,647 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:03:21,648 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1462366378] [2021-02-22 01:03:21,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:03:21,650 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:03:21,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:21,715 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:21,715 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:03:21,721 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:21,721 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:03:21,722 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:21,722 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:03:21,723 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:21,723 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:03:21,724 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:21,724 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:03:21,725 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:21,725 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:03:21,726 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:21,726 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:22,001 WARN L202 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-22 01:03:22,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:03:22,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:22,048 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:22,048 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:22,049 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:22,049 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:03:22,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-22 01:03:22,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:22,058 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:22,058 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:22,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-22 01:03:22,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:22,061 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:22,061 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:22,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-22 01:03:22,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:22,065 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:22,065 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:22,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-22 01:03:22,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:22,067 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:22,068 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:22,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-02-22 01:03:22,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:22,083 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:22,084 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:03:22,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-02-22 01:03:22,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:22,095 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:22,096 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:22,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-02-22 01:03:22,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:22,098 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:22,099 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:22,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-02-22 01:03:22,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:22,101 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:22,102 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:22,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2021-02-22 01:03:22,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:22,104 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:22,105 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:22,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 01:03:22,152 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1462366378] [2021-02-22 01:03:22,152 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:03:22,152 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-22 01:03:22,152 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759484824] [2021-02-22 01:03:22,153 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-22 01:03:22,153 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:03:22,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-22 01:03:22,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-22 01:03:22,154 INFO L87 Difference]: Start difference. First operand 820 states and 948 transitions. Second operand 6 states. [2021-02-22 01:03:22,766 WARN L202 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-22 01:03:24,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:03:24,074 INFO L93 Difference]: Finished difference Result 1357 states and 1630 transitions. [2021-02-22 01:03:24,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-02-22 01:03:24,075 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 182 [2021-02-22 01:03:24,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:03:24,079 INFO L225 Difference]: With dead ends: 1357 [2021-02-22 01:03:24,080 INFO L226 Difference]: Without dead ends: 652 [2021-02-22 01:03:24,083 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-02-22 01:03:24,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 652 states. [2021-02-22 01:03:24,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 652 to 575. [2021-02-22 01:03:24,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 575 states. [2021-02-22 01:03:24,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 575 states to 575 states and 626 transitions. [2021-02-22 01:03:24,369 INFO L78 Accepts]: Start accepts. Automaton has 575 states and 626 transitions. Word has length 182 [2021-02-22 01:03:24,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:03:24,369 INFO L480 AbstractCegarLoop]: Abstraction has 575 states and 626 transitions. [2021-02-22 01:03:24,369 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-22 01:03:24,369 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states and 626 transitions. [2021-02-22 01:03:24,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-02-22 01:03:24,373 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:03:24,373 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] [2021-02-22 01:03:24,374 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-22 01:03:24,374 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:03:24,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:03:24,374 INFO L82 PathProgramCache]: Analyzing trace with hash -562945429, now seen corresponding path program 1 times [2021-02-22 01:03:24,375 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:03:24,375 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [484475048] [2021-02-22 01:03:24,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:03:24,378 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:03:24,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-22 01:03:24,468 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-22 01:03:24,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-22 01:03:24,546 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-22 01:03:24,899 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-22 01:03:24,899 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-22 01:03:24,902 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-22 01:03:24,944 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.02 01:03:24 BoogieIcfgContainer [2021-02-22 01:03:24,944 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-22 01:03:24,946 INFO L168 Benchmark]: Toolchain (without parser) took 26424.74 ms. Allocated memory was 157.3 MB in the beginning and 580.9 MB in the end (delta: 423.6 MB). Free memory was 132.7 MB in the beginning and 275.5 MB in the end (delta: -142.7 MB). Peak memory consumption was 282.3 MB. Max. memory is 8.0 GB. [2021-02-22 01:03:24,950 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 157.3 MB. Free memory is still 139.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-22 01:03:24,950 INFO L168 Benchmark]: CACSL2BoogieTranslator took 537.49 ms. Allocated memory is still 157.3 MB. Free memory was 131.7 MB in the beginning and 110.7 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. [2021-02-22 01:03:24,951 INFO L168 Benchmark]: Boogie Preprocessor took 140.19 ms. Allocated memory is still 157.3 MB. Free memory was 110.7 MB in the beginning and 106.7 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2021-02-22 01:03:24,951 INFO L168 Benchmark]: RCFGBuilder took 1453.04 ms. Allocated memory is still 157.3 MB. Free memory was 106.7 MB in the beginning and 124.4 MB in the end (delta: -17.7 MB). Peak memory consumption was 59.5 MB. Max. memory is 8.0 GB. [2021-02-22 01:03:24,952 INFO L168 Benchmark]: TraceAbstraction took 24274.98 ms. Allocated memory was 157.3 MB in the beginning and 580.9 MB in the end (delta: 423.6 MB). Free memory was 123.9 MB in the beginning and 275.5 MB in the end (delta: -151.6 MB). Peak memory consumption was 272.1 MB. Max. memory is 8.0 GB. [2021-02-22 01:03:24,955 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 157.3 MB. Free memory is still 139.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 537.49 ms. Allocated memory is still 157.3 MB. Free memory was 131.7 MB in the beginning and 110.7 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 140.19 ms. Allocated memory is still 157.3 MB. Free memory was 110.7 MB in the beginning and 106.7 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1453.04 ms. Allocated memory is still 157.3 MB. Free memory was 106.7 MB in the beginning and 124.4 MB in the end (delta: -17.7 MB). Peak memory consumption was 59.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 24274.98 ms. Allocated memory was 157.3 MB in the beginning and 580.9 MB in the end (delta: 423.6 MB). Free memory was 123.9 MB in the beginning and 275.5 MB in the end (delta: -151.6 MB). Peak memory consumption was 272.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 46]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L62] int pumpRunning = 0; [L63] int systemActive = 1; [L371] int cleanupTimeShifts = 4; [L639] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L836] int waterLevel = 1; [L837] int methaneLevelCritical = 0; [L447] int retValue_acc ; [L448] int tmp ; [L452] FCALL select_helpers() [L453] FCALL select_features() [L454] CALL, EXPR valid_product() [L951] int retValue_acc ; [L954] retValue_acc = 1 [L955] return (retValue_acc); [L454] RET, EXPR valid_product() [L454] tmp = valid_product() [L456] COND TRUE \read(tmp) [L458] FCALL setup() [L459] CALL runTest() [L438] CALL test() [L268] int splverifierCounter ; [L269] int tmp ; [L270] int tmp___0 ; [L271] int tmp___1 ; [L272] int tmp___2 ; [L275] splverifierCounter = 0 [L277] COND TRUE 1 [L279] COND TRUE splverifierCounter < 4 [L285] tmp = __VERIFIER_nondet_int() [L287] COND TRUE \read(tmp) [L289] CALL waterRise() [L854] COND TRUE waterLevel < 2 [L855] waterLevel = waterLevel + 1 [L289] RET waterRise() [L295] tmp___0 = __VERIFIER_nondet_int() [L297] COND FALSE !(\read(tmp___0)) [L305] tmp___2 = __VERIFIER_nondet_int() [L307] COND FALSE !(\read(tmp___2)) [L313] tmp___1 = __VERIFIER_nondet_int() [L315] COND TRUE \read(tmp___1) [L317] CALL stopSystem() [L244] COND FALSE !(\read(pumpRunning)) [L251] systemActive = 0 [L317] RET stopSystem() [L324] CALL timeShift() [L70] COND FALSE !(\read(pumpRunning)) [L77] COND FALSE !(\read(systemActive)) [L85] CALL __utac_acc__Specification3_spec__1() [L338] int tmp ; [L339] int tmp___0 ; [L340] int tmp___1 ; [L344] CALL, EXPR isMethaneLevelCritical() [L875] int retValue_acc ; [L878] retValue_acc = methaneLevelCritical [L879] return (retValue_acc); [L344] RET, EXPR isMethaneLevelCritical() [L344] tmp = isMethaneLevelCritical() [L346] COND FALSE !(\read(tmp)) [L350] CALL, EXPR getWaterLevel() [L907] int retValue_acc ; [L910] retValue_acc = waterLevel [L911] return (retValue_acc); [L350] RET, EXPR getWaterLevel() [L350] tmp___0 = getWaterLevel() [L352] COND TRUE tmp___0 == 2 [L354] CALL, EXPR isPumpRunning() [L177] int retValue_acc ; [L180] retValue_acc = pumpRunning [L181] return (retValue_acc); [L354] RET, EXPR isPumpRunning() [L354] tmp___1 = isPumpRunning() [L356] COND FALSE !(\read(tmp___1)) [L360] CALL __automaton_fail() [L46] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 41 procedures, 640 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 24.1s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 18.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1241 SDtfs, 1971 SDslu, 1640 SDs, 0 SdLazy, 3509 SolverSat, 698 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 9.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 150 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 7.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=820occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.2s AutomataMinimizationTime, 5 MinimizatonAttempts, 356 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...