/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/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product36.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 16:16:48,755 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 16:16:48,758 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 16:16:48,792 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-23 16:16:48,792 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-23 16:16:48,794 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-23 16:16:48,795 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-23 16:16:48,798 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-23 16:16:48,800 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-23 16:16:48,813 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-23 16:16:48,814 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-23 16:16:48,816 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-23 16:16:48,816 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 16:16:48,818 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 16:16:48,819 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 16:16:48,820 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 16:16:48,821 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 16:16:48,822 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 16:16:48,826 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 16:16:48,832 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 16:16:48,837 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 16:16:48,839 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 16:16:48,842 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 16:16:48,843 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 16:16:48,852 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-23 16:16:48,855 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-23 16:16:48,855 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-23 16:16:48,858 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-23 16:16:48,859 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-23 16:16:48,860 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-23 16:16:48,860 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-23 16:16:48,865 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-23 16:16:48,866 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-23 16:16:48,867 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-23 16:16:48,870 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-23 16:16:48,870 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-23 16:16:48,871 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-23 16:16:48,872 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-23 16:16:48,872 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 16:16:48,874 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 16:16:48,875 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 16:16:48,877 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-23 16:16:48,903 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 16:16:48,904 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 16:16:48,906 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 16:16:48,906 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 16:16:48,906 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 16:16:48,906 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 16:16:48,906 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 16:16:48,907 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 16:16:48,907 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 16:16:48,907 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 16:16:48,908 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 16:16:48,908 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 16:16:48,908 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 16:16:48,908 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 16:16:48,908 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 16:16:48,909 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 16:16:48,909 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 16:16:48,910 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 16:16:48,910 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 16:16:48,910 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 16:16:48,911 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 16:16:48,911 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 16:16:48,911 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 16:16:49,315 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 16:16:49,341 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 16:16:49,344 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 16:16:49,345 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 16:16:49,346 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 16:16:49,347 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product36.cil.c [2021-02-23 16:16:49,437 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c530a66f/bdff498d09394954bb1a199df3cd2eb3/FLAG613fff4cf [2021-02-23 16:16:50,143 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 16:16:50,145 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec2_product36.cil.c [2021-02-23 16:16:50,165 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c530a66f/bdff498d09394954bb1a199df3cd2eb3/FLAG613fff4cf [2021-02-23 16:16:50,400 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c530a66f/bdff498d09394954bb1a199df3cd2eb3 [2021-02-23 16:16:50,403 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 16:16:50,418 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 16:16:50,425 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 16:16:50,425 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 16:16:50,429 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 16:16:50,430 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 04:16:50" (1/1) ... [2021-02-23 16:16:50,432 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@769ebbb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:16:50, skipping insertion in model container [2021-02-23 16:16:50,432 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 04:16:50" (1/1) ... [2021-02-23 16:16:50,442 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 16:16:50,514 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 16:16:50,915 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_spec2_product36.cil.c[17352,17365] [2021-02-23 16:16:50,921 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 16:16:50,932 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 16:16:51,019 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_spec2_product36.cil.c[17352,17365] [2021-02-23 16:16:51,021 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 16:16:51,062 INFO L208 MainTranslator]: Completed translation [2021-02-23 16:16:51,063 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:16:51 WrapperNode [2021-02-23 16:16:51,063 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 16:16:51,064 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 16:16:51,065 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 16:16:51,065 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 16:16:51,078 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:16:51" (1/1) ... [2021-02-23 16:16:51,079 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:16:51" (1/1) ... [2021-02-23 16:16:51,114 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:16:51" (1/1) ... [2021-02-23 16:16:51,114 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:16:51" (1/1) ... [2021-02-23 16:16:51,167 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:16:51" (1/1) ... [2021-02-23 16:16:51,177 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:16:51" (1/1) ... [2021-02-23 16:16:51,182 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:16:51" (1/1) ... [2021-02-23 16:16:51,190 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 16:16:51,191 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 16:16:51,192 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 16:16:51,192 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 16:16:51,193 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:16:51" (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 [2021-02-23 16:16:51,301 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 16:16:51,301 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 16:16:51,302 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-23 16:16:51,302 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 16:16:51,302 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-23 16:16:51,302 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-23 16:16:51,302 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-23 16:16:51,302 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-23 16:16:51,302 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-23 16:16:51,321 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-23 16:16:51,321 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2021-02-23 16:16:51,321 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-23 16:16:51,321 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-23 16:16:51,323 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-23 16:16:51,323 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-23 16:16:51,323 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-23 16:16:51,324 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-23 16:16:51,324 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-23 16:16:51,324 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-23 16:16:51,324 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-23 16:16:51,324 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-23 16:16:51,324 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-23 16:16:51,325 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-23 16:16:51,325 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-23 16:16:51,325 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-23 16:16:51,325 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 16:16:51,325 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-23 16:16:51,326 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-02-23 16:16:51,326 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-23 16:16:51,326 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-23 16:16:51,326 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-23 16:16:51,326 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-23 16:16:51,326 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-23 16:16:51,327 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-23 16:16:51,327 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2021-02-23 16:16:51,327 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2021-02-23 16:16:51,327 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2021-02-23 16:16:51,327 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-23 16:16:51,327 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-23 16:16:51,328 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2021-02-23 16:16:51,328 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2021-02-23 16:16:51,328 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 16:16:51,328 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 16:16:51,328 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 16:16:51,328 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 16:16:51,329 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 16:16:51,329 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-23 16:16:51,329 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-23 16:16:51,329 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-23 16:16:51,329 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-23 16:16:51,329 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-23 16:16:51,329 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-23 16:16:51,330 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-23 16:16:51,330 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2021-02-23 16:16:51,330 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-23 16:16:51,330 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-23 16:16:51,330 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-23 16:16:51,330 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-23 16:16:51,331 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-23 16:16:51,331 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 16:16:51,331 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-23 16:16:51,331 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-23 16:16:51,331 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 16:16:51,331 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-23 16:16:51,331 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-23 16:16:51,332 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 16:16:51,332 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-23 16:16:51,332 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-23 16:16:51,332 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-23 16:16:51,332 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-23 16:16:51,332 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-23 16:16:51,332 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-23 16:16:51,333 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-23 16:16:51,333 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-23 16:16:51,333 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-23 16:16:51,333 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-23 16:16:51,333 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-23 16:16:51,333 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-23 16:16:51,334 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2021-02-23 16:16:51,334 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-23 16:16:51,334 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-23 16:16:51,334 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 16:16:51,334 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-23 16:16:51,334 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-23 16:16:51,334 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-23 16:16:51,335 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2021-02-23 16:16:51,335 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2021-02-23 16:16:51,335 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2021-02-23 16:16:51,335 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-23 16:16:51,335 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-02-23 16:16:51,335 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2021-02-23 16:16:51,336 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-23 16:16:51,336 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-23 16:16:51,336 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 16:16:51,336 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 16:16:51,336 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 16:16:52,487 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 16:16:52,488 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-23 16:16:52,491 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 04:16:52 BoogieIcfgContainer [2021-02-23 16:16:52,491 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 16:16:52,493 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 16:16:52,493 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 16:16:52,496 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 16:16:52,497 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 04:16:50" (1/3) ... [2021-02-23 16:16:52,498 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@793bb760 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 04:16:52, skipping insertion in model container [2021-02-23 16:16:52,498 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:16:51" (2/3) ... [2021-02-23 16:16:52,498 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@793bb760 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 04:16:52, skipping insertion in model container [2021-02-23 16:16:52,499 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 04:16:52" (3/3) ... [2021-02-23 16:16:52,500 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product36.cil.c [2021-02-23 16:16:52,508 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 16:16:52,514 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 16:16:52,534 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 16:16:52,560 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 16:16:52,560 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 16:16:52,560 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-23 16:16:52,560 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 16:16:52,561 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 16:16:52,561 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 16:16:52,561 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 16:16:52,561 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 16:16:52,585 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states. [2021-02-23 16:16:52,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-02-23 16:16:52,605 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:16:52,606 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] [2021-02-23 16:16:52,607 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:16:52,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:16:52,614 INFO L82 PathProgramCache]: Analyzing trace with hash -1555840057, now seen corresponding path program 1 times [2021-02-23 16:16:52,623 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:16:52,624 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1656193805] [2021-02-23 16:16:52,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:16:52,703 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:16:52,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:16:53,096 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:16:53,097 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:16:53,098 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:16:53,099 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:16:53,421 WARN L202 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:16:53,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:16:53,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:16:53,551 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:16:53,552 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:16:53,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-02-23 16:16:53,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:16:53,571 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:16:53,572 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:16:53,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-02-23 16:16:53,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:16:53,575 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:16:53,575 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:16:53,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-02-23 16:16:53,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:16:53,579 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:16:53,580 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:16:53,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-02-23 16:16:53,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:16:53,583 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:16:53,583 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:16:53,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-02-23 16:16:53,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:16:53,594 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:16:53,594 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:16:53,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-02-23 16:16:53,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:16:53,598 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:16:53,599 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:16:53,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-02-23 16:16:53,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:16:53,603 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:16:53,604 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:16:53,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:16:53,664 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1656193805] [2021-02-23 16:16:53,666 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:16:53,667 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 16:16:53,667 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255802177] [2021-02-23 16:16:53,673 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 16:16:53,673 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:16:53,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 16:16:53,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-02-23 16:16:53,692 INFO L87 Difference]: Start difference. First operand 312 states. Second operand 4 states. [2021-02-23 16:16:55,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:16:55,293 INFO L93 Difference]: Finished difference Result 469 states and 555 transitions. [2021-02-23 16:16:55,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-23 16:16:55,295 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 153 [2021-02-23 16:16:55,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:16:55,324 INFO L225 Difference]: With dead ends: 469 [2021-02-23 16:16:55,324 INFO L226 Difference]: Without dead ends: 304 [2021-02-23 16:16:55,331 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-02-23 16:16:55,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2021-02-23 16:16:55,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 254. [2021-02-23 16:16:55,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2021-02-23 16:16:55,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 274 transitions. [2021-02-23 16:16:55,543 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 274 transitions. Word has length 153 [2021-02-23 16:16:55,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:16:55,545 INFO L480 AbstractCegarLoop]: Abstraction has 254 states and 274 transitions. [2021-02-23 16:16:55,545 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 16:16:55,546 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 274 transitions. [2021-02-23 16:16:55,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-02-23 16:16:55,562 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:16:55,563 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] [2021-02-23 16:16:55,563 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 16:16:55,563 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:16:55,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:16:55,565 INFO L82 PathProgramCache]: Analyzing trace with hash -623517987, now seen corresponding path program 1 times [2021-02-23 16:16:55,565 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:16:55,567 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [951879058] [2021-02-23 16:16:55,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:16:55,586 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:16:55,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:16:55,676 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:16:55,677 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:16:55,678 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:16:55,679 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:16:55,682 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:16:55,683 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:16:55,986 WARN L202 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:16:55,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:16:55,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:16:56,029 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:16:56,029 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:16:56,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-02-23 16:16:56,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:16:56,038 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:16:56,039 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:16:56,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-02-23 16:16:56,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:16:56,041 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:16:56,041 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:16:56,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-02-23 16:16:56,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:16:56,044 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:16:56,045 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:16:56,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-02-23 16:16:56,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:16:56,047 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:16:56,048 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:16:56,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-02-23 16:16:56,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:16:56,058 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:16:56,059 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:16:56,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-02-23 16:16:56,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:16:56,062 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:16:56,063 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:16:56,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-02-23 16:16:56,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:16:56,067 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:16:56,068 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:16:56,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:16:56,104 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [951879058] [2021-02-23 16:16:56,104 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:16:56,104 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-23 16:16:56,105 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937804627] [2021-02-23 16:16:56,106 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-23 16:16:56,106 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:16:56,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-23 16:16:56,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-02-23 16:16:56,107 INFO L87 Difference]: Start difference. First operand 254 states and 274 transitions. Second operand 5 states. [2021-02-23 16:16:56,915 WARN L202 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:16:57,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:16:57,988 INFO L93 Difference]: Finished difference Result 384 states and 435 transitions. [2021-02-23 16:16:57,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-23 16:16:57,989 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 154 [2021-02-23 16:16:57,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:16:57,994 INFO L225 Difference]: With dead ends: 384 [2021-02-23 16:16:57,994 INFO L226 Difference]: Without dead ends: 293 [2021-02-23 16:16:57,996 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-02-23 16:16:57,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2021-02-23 16:16:58,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 244. [2021-02-23 16:16:58,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244 states. [2021-02-23 16:16:58,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 261 transitions. [2021-02-23 16:16:58,094 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 261 transitions. Word has length 154 [2021-02-23 16:16:58,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:16:58,095 INFO L480 AbstractCegarLoop]: Abstraction has 244 states and 261 transitions. [2021-02-23 16:16:58,095 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-23 16:16:58,095 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 261 transitions. [2021-02-23 16:16:58,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-02-23 16:16:58,097 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:16:58,098 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] [2021-02-23 16:16:58,098 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 16:16:58,098 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:16:58,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:16:58,099 INFO L82 PathProgramCache]: Analyzing trace with hash 1644836431, now seen corresponding path program 1 times [2021-02-23 16:16:58,099 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:16:58,099 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1118239227] [2021-02-23 16:16:58,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:16:58,103 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:16:58,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:16:58,191 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:16:58,194 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:16:58,195 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:16:58,196 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:16:58,202 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:16:58,203 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:16:58,210 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:16:58,212 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:16:58,213 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:16:58,215 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:16:58,220 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:16:58,221 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:16:58,556 WARN L202 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:16:58,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:16:58,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:16:58,622 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:16:58,624 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:16:58,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-02-23 16:16:58,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:16:58,636 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:16:58,637 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:16:58,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-02-23 16:16:58,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:16:58,643 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:16:58,643 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:16:58,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-02-23 16:16:58,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:16:58,656 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:16:58,657 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:16:58,666 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:16:58,666 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:16:58,680 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:16:58,681 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:16:58,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-02-23 16:16:58,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:16:58,697 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:16:58,697 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:16:58,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-02-23 16:16:58,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:16:58,717 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:16:58,718 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:16:58,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-02-23 16:16:58,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:16:58,736 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:16:58,737 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:16:58,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-02-23 16:16:58,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:16:58,752 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:16:58,753 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:16:58,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-02-23 16:16:58,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:16:58,758 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:16:58,759 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:16:58,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:16:58,800 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1118239227] [2021-02-23 16:16:58,801 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:16:58,802 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-02-23 16:16:58,802 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261320726] [2021-02-23 16:16:58,803 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-02-23 16:16:58,804 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:16:58,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-02-23 16:16:58,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-02-23 16:16:58,809 INFO L87 Difference]: Start difference. First operand 244 states and 261 transitions. Second operand 11 states. [2021-02-23 16:16:59,486 WARN L202 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:16:59,940 WARN L202 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-23 16:17:00,342 WARN L202 SmtUtils]: Spent 377.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2021-02-23 16:17:00,708 WARN L202 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 16:17:01,133 WARN L202 SmtUtils]: Spent 396.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-23 16:17:01,497 WARN L202 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 16:17:02,608 WARN L202 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:17:05,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:17:05,130 INFO L93 Difference]: Finished difference Result 659 states and 773 transitions. [2021-02-23 16:17:05,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-02-23 16:17:05,131 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 167 [2021-02-23 16:17:05,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:17:05,137 INFO L225 Difference]: With dead ends: 659 [2021-02-23 16:17:05,138 INFO L226 Difference]: Without dead ends: 535 [2021-02-23 16:17:05,140 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=168, Invalid=384, Unknown=0, NotChecked=0, Total=552 [2021-02-23 16:17:05,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 535 states. [2021-02-23 16:17:05,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 535 to 420. [2021-02-23 16:17:05,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 420 states. [2021-02-23 16:17:05,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 465 transitions. [2021-02-23 16:17:05,364 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 465 transitions. Word has length 167 [2021-02-23 16:17:05,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:17:05,366 INFO L480 AbstractCegarLoop]: Abstraction has 420 states and 465 transitions. [2021-02-23 16:17:05,366 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-02-23 16:17:05,366 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 465 transitions. [2021-02-23 16:17:05,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2021-02-23 16:17:05,369 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:17:05,369 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] [2021-02-23 16:17:05,370 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 16:17:05,370 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:17:05,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:17:05,370 INFO L82 PathProgramCache]: Analyzing trace with hash 136001514, now seen corresponding path program 1 times [2021-02-23 16:17:05,371 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:17:05,371 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [933158325] [2021-02-23 16:17:05,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:17:05,377 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:17:05,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:05,504 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:05,505 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:17:05,508 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:05,509 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:17:05,510 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:05,511 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:17:05,511 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:05,512 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:17:05,514 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:05,514 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:17:05,519 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:05,519 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:17:05,524 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:05,528 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:05,935 WARN L202 SmtUtils]: Spent 386.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:17:05,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:17:05,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:06,027 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:06,029 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:06,031 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:06,031 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:17:06,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-02-23 16:17:06,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:06,044 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:06,044 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:06,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-02-23 16:17:06,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:06,048 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:06,049 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:06,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-02-23 16:17:06,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:06,055 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:06,056 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:06,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-02-23 16:17:06,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:06,062 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:06,062 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:06,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-02-23 16:17:06,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:06,084 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:06,085 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:06,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-02-23 16:17:06,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:06,111 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:06,112 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:06,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-02-23 16:17:06,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:06,117 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:06,118 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:06,118 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:06,119 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:17:06,129 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:06,130 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:17:06,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-02-23 16:17:06,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:06,145 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:06,146 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:06,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:17:06,215 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [933158325] [2021-02-23 16:17:06,215 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:17:06,215 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-23 16:17:06,215 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115644886] [2021-02-23 16:17:06,216 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-23 16:17:06,216 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:17:06,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-23 16:17:06,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-23 16:17:06,217 INFO L87 Difference]: Start difference. First operand 420 states and 465 transitions. Second operand 10 states. [2021-02-23 16:17:06,864 WARN L202 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:17:08,538 WARN L202 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 16:17:08,914 WARN L202 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-23 16:17:09,358 WARN L202 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 16:17:09,738 WARN L202 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:17:10,081 WARN L202 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-23 16:17:10,443 WARN L202 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 16:17:10,810 WARN L202 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 16:17:11,359 WARN L202 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:17:12,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:17:12,735 INFO L93 Difference]: Finished difference Result 1140 states and 1382 transitions. [2021-02-23 16:17:12,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-02-23 16:17:12,735 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 172 [2021-02-23 16:17:12,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:17:12,743 INFO L225 Difference]: With dead ends: 1140 [2021-02-23 16:17:12,743 INFO L226 Difference]: Without dead ends: 840 [2021-02-23 16:17:12,745 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=159, Invalid=441, Unknown=0, NotChecked=0, Total=600 [2021-02-23 16:17:12,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 840 states. [2021-02-23 16:17:13,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 840 to 672. [2021-02-23 16:17:13,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 672 states. [2021-02-23 16:17:13,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 672 states to 672 states and 754 transitions. [2021-02-23 16:17:13,076 INFO L78 Accepts]: Start accepts. Automaton has 672 states and 754 transitions. Word has length 172 [2021-02-23 16:17:13,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:17:13,076 INFO L480 AbstractCegarLoop]: Abstraction has 672 states and 754 transitions. [2021-02-23 16:17:13,077 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-23 16:17:13,077 INFO L276 IsEmpty]: Start isEmpty. Operand 672 states and 754 transitions. [2021-02-23 16:17:13,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-02-23 16:17:13,080 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:17:13,080 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] [2021-02-23 16:17:13,081 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-23 16:17:13,081 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:17:13,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:17:13,081 INFO L82 PathProgramCache]: Analyzing trace with hash -1665567934, now seen corresponding path program 1 times [2021-02-23 16:17:13,082 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:17:13,082 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1796004524] [2021-02-23 16:17:13,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:17:13,085 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:17:13,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:13,152 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:13,152 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:17:13,156 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:13,156 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:17:13,158 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:13,160 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:17:13,160 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:13,161 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:17:13,161 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:13,162 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:17:13,162 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:13,163 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:17:13,163 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:13,163 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:17:13,167 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:13,168 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:17:13,173 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:13,173 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:13,541 WARN L202 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:17:13,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:17:13,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:13,591 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:13,592 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:13,593 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:13,594 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:17:13,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-02-23 16:17:13,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:13,605 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:13,607 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:13,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-02-23 16:17:13,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:13,611 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:13,612 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:13,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-02-23 16:17:13,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:13,616 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:13,617 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:13,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-02-23 16:17:13,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:13,620 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:13,620 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:13,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-02-23 16:17:13,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:13,634 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:13,635 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:13,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-02-23 16:17:13,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:13,666 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:13,667 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:13,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-02-23 16:17:13,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:13,688 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:13,689 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:17:13,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-02-23 16:17:13,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:13,693 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:13,693 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:13,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-02-23 16:17:13,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:13,698 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:13,698 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:13,699 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:13,699 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:17:13,712 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:13,713 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:17:13,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:17:13,803 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1796004524] [2021-02-23 16:17:13,804 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:17:13,804 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-02-23 16:17:13,804 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618248087] [2021-02-23 16:17:13,805 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-02-23 16:17:13,805 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:17:13,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-02-23 16:17:13,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-02-23 16:17:13,806 INFO L87 Difference]: Start difference. First operand 672 states and 754 transitions. Second operand 11 states. [2021-02-23 16:17:14,475 WARN L202 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:17:16,074 WARN L202 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 16:17:16,458 WARN L202 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-23 16:17:16,883 WARN L202 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 16:17:17,313 WARN L202 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-23 16:17:17,704 WARN L202 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 16:17:18,540 WARN L202 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:17:18,892 WARN L202 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 16:17:19,393 WARN L202 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:17:20,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:17:20,719 INFO L93 Difference]: Finished difference Result 1778 states and 2192 transitions. [2021-02-23 16:17:20,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-02-23 16:17:20,720 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 177 [2021-02-23 16:17:20,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:17:20,730 INFO L225 Difference]: With dead ends: 1778 [2021-02-23 16:17:20,730 INFO L226 Difference]: Without dead ends: 1226 [2021-02-23 16:17:20,733 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=283, Invalid=773, Unknown=0, NotChecked=0, Total=1056 [2021-02-23 16:17:20,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1226 states. [2021-02-23 16:17:21,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1226 to 938. [2021-02-23 16:17:21,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 938 states. [2021-02-23 16:17:21,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 938 states to 938 states and 1060 transitions. [2021-02-23 16:17:21,259 INFO L78 Accepts]: Start accepts. Automaton has 938 states and 1060 transitions. Word has length 177 [2021-02-23 16:17:21,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:17:21,259 INFO L480 AbstractCegarLoop]: Abstraction has 938 states and 1060 transitions. [2021-02-23 16:17:21,260 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-02-23 16:17:21,260 INFO L276 IsEmpty]: Start isEmpty. Operand 938 states and 1060 transitions. [2021-02-23 16:17:21,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2021-02-23 16:17:21,264 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:17:21,264 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 16:17:21,265 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-23 16:17:21,265 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:17:21,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:17:21,265 INFO L82 PathProgramCache]: Analyzing trace with hash -521381499, now seen corresponding path program 1 times [2021-02-23 16:17:21,266 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:17:21,266 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1147377363] [2021-02-23 16:17:21,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:17:21,269 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:17:21,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:21,332 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:21,332 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:21,333 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:21,333 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:21,623 WARN L202 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:17:21,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:17:21,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:21,650 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:21,650 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:21,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-02-23 16:17:21,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:21,659 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:21,660 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:21,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-02-23 16:17:21,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:21,662 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:21,662 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:21,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-02-23 16:17:21,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:21,665 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:21,666 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:21,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-02-23 16:17:21,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:21,669 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:21,672 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:21,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-02-23 16:17:21,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:21,681 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:21,681 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:21,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-02-23 16:17:21,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:21,691 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:21,691 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:21,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-02-23 16:17:21,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:21,702 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:21,703 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:21,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-02-23 16:17:21,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:21,719 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:21,720 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:21,721 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:21,721 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:17:21,729 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:21,730 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:17:21,739 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:21,740 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:21,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 16:17:21,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:21,748 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:21,749 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:21,750 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:21,751 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:17:21,764 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:21,765 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:17:21,780 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:21,781 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:17:21,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 16:17:21,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:21,799 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:21,799 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:21,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-23 16:17:21,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:21,802 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:21,803 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:21,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-02-23 16:17:21,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:21,807 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:21,807 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:21,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2021-02-23 16:17:21,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:21,810 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:21,810 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:21,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:17:21,867 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1147377363] [2021-02-23 16:17:21,867 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:17:21,868 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-02-23 16:17:21,868 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024012641] [2021-02-23 16:17:21,868 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-02-23 16:17:21,868 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:17:21,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-02-23 16:17:21,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-02-23 16:17:21,869 INFO L87 Difference]: Start difference. First operand 938 states and 1060 transitions. Second operand 12 states. [2021-02-23 16:17:23,556 WARN L202 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 16:17:23,958 WARN L202 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2021-02-23 16:17:24,364 WARN L202 SmtUtils]: Spent 367.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2021-02-23 16:17:24,769 WARN L202 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:17:25,194 WARN L202 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-23 16:17:25,550 WARN L202 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:17:27,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:17:27,324 INFO L93 Difference]: Finished difference Result 2403 states and 3012 transitions. [2021-02-23 16:17:27,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-02-23 16:17:27,324 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 205 [2021-02-23 16:17:27,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:17:27,336 INFO L225 Difference]: With dead ends: 2403 [2021-02-23 16:17:27,337 INFO L226 Difference]: Without dead ends: 1585 [2021-02-23 16:17:27,341 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=231, Invalid=581, Unknown=0, NotChecked=0, Total=812 [2021-02-23 16:17:27,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1585 states. [2021-02-23 16:17:27,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1585 to 976. [2021-02-23 16:17:27,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 976 states. [2021-02-23 16:17:27,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 976 states to 976 states and 1098 transitions. [2021-02-23 16:17:27,972 INFO L78 Accepts]: Start accepts. Automaton has 976 states and 1098 transitions. Word has length 205 [2021-02-23 16:17:27,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:17:27,973 INFO L480 AbstractCegarLoop]: Abstraction has 976 states and 1098 transitions. [2021-02-23 16:17:27,973 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-02-23 16:17:27,973 INFO L276 IsEmpty]: Start isEmpty. Operand 976 states and 1098 transitions. [2021-02-23 16:17:27,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2021-02-23 16:17:27,978 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:17:27,979 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 16:17:27,979 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-23 16:17:27,979 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:17:27,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:17:27,980 INFO L82 PathProgramCache]: Analyzing trace with hash -1661175323, now seen corresponding path program 1 times [2021-02-23 16:17:27,980 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:17:27,980 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2076675712] [2021-02-23 16:17:27,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:17:27,983 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:17:28,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:28,042 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:28,043 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:28,043 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:28,044 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:17:28,047 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:28,048 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:17:28,052 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:28,052 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:28,053 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:28,053 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:28,363 WARN L202 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:17:28,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:17:28,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:28,392 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:28,392 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:28,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-02-23 16:17:28,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:28,399 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:28,400 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:28,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-02-23 16:17:28,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:28,402 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:28,403 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:28,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-02-23 16:17:28,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:28,408 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:28,409 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:28,409 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:28,410 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:17:28,421 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:28,422 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:17:28,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-02-23 16:17:28,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:28,436 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:28,436 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:28,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-02-23 16:17:28,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:28,449 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:28,452 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:28,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-02-23 16:17:28,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:28,466 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:28,467 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:28,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-02-23 16:17:28,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:28,480 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:28,480 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:28,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-02-23 16:17:28,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:28,503 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:28,503 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:28,504 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:28,504 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:28,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 16:17:28,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:28,510 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:28,510 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:28,511 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:28,512 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:17:28,525 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:28,526 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:17:28,540 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:28,543 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:28,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 16:17:28,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:28,547 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:28,548 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:28,550 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:28,551 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:17:28,568 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:28,569 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:17:28,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-23 16:17:28,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:28,588 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:28,589 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:28,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-02-23 16:17:28,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:28,593 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:28,593 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:28,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2021-02-23 16:17:28,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:28,597 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:28,602 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:28,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:17:28,656 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2076675712] [2021-02-23 16:17:28,657 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:17:28,657 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-02-23 16:17:28,657 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733683976] [2021-02-23 16:17:28,657 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-02-23 16:17:28,658 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:17:28,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-02-23 16:17:28,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2021-02-23 16:17:28,658 INFO L87 Difference]: Start difference. First operand 976 states and 1098 transitions. Second operand 15 states. [2021-02-23 16:17:29,410 WARN L202 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 16:17:29,787 WARN L202 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2021-02-23 16:17:30,157 WARN L202 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:17:30,527 WARN L202 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-23 16:17:30,879 WARN L202 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:17:32,090 WARN L202 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:17:32,467 WARN L202 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-23 16:17:32,868 WARN L202 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:17:33,285 WARN L202 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-23 16:17:33,668 WARN L202 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:17:36,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:17:36,412 INFO L93 Difference]: Finished difference Result 2485 states and 3150 transitions. [2021-02-23 16:17:36,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-02-23 16:17:36,413 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 205 [2021-02-23 16:17:36,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:17:36,427 INFO L225 Difference]: With dead ends: 2485 [2021-02-23 16:17:36,428 INFO L226 Difference]: Without dead ends: 1629 [2021-02-23 16:17:36,432 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=314, Invalid=946, Unknown=0, NotChecked=0, Total=1260 [2021-02-23 16:17:36,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1629 states. [2021-02-23 16:17:36,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1629 to 1000. [2021-02-23 16:17:36,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1000 states. [2021-02-23 16:17:36,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1000 states to 1000 states and 1122 transitions. [2021-02-23 16:17:36,891 INFO L78 Accepts]: Start accepts. Automaton has 1000 states and 1122 transitions. Word has length 205 [2021-02-23 16:17:36,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:17:36,892 INFO L480 AbstractCegarLoop]: Abstraction has 1000 states and 1122 transitions. [2021-02-23 16:17:36,892 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2021-02-23 16:17:36,892 INFO L276 IsEmpty]: Start isEmpty. Operand 1000 states and 1122 transitions. [2021-02-23 16:17:36,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2021-02-23 16:17:36,897 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:17:36,897 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 16:17:36,897 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-02-23 16:17:36,897 INFO L428 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:17:36,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:17:36,898 INFO L82 PathProgramCache]: Analyzing trace with hash 502669282, now seen corresponding path program 1 times [2021-02-23 16:17:36,898 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:17:36,898 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [40665883] [2021-02-23 16:17:36,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:17:36,902 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:17:36,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:36,969 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:36,970 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:17:36,972 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:36,973 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:17:36,973 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:36,974 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:17:36,974 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:36,975 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:17:36,975 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:36,976 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 16:17:36,976 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:36,977 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:37,269 WARN L202 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:17:37,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:17:37,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:37,310 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:37,311 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:37,312 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:37,312 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 16:17:37,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-02-23 16:17:37,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:37,320 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:37,321 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:37,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-02-23 16:17:37,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:37,323 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:37,324 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:37,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-02-23 16:17:37,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:37,326 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:37,327 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:37,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-02-23 16:17:37,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:37,354 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:37,354 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:37,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-02-23 16:17:37,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:37,364 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:37,364 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:37,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-02-23 16:17:37,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:37,375 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:37,376 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:37,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-02-23 16:17:37,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:37,388 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:37,390 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:37,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-02-23 16:17:37,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:37,407 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:37,408 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:37,409 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:37,409 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:17:37,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 16:17:37,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:37,423 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:37,424 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:37,425 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:37,425 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:17:37,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 16:17:37,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:37,438 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:37,438 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:37,439 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:37,439 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:17:37,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-23 16:17:37,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:37,451 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:37,452 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:37,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-02-23 16:17:37,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:37,456 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:37,456 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:37,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2021-02-23 16:17:37,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:37,458 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:37,458 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:37,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:17:37,516 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [40665883] [2021-02-23 16:17:37,516 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:17:37,516 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-23 16:17:37,516 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979726644] [2021-02-23 16:17:37,517 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-23 16:17:37,517 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:17:37,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-23 16:17:37,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-02-23 16:17:37,518 INFO L87 Difference]: Start difference. First operand 1000 states and 1122 transitions. Second operand 9 states. [2021-02-23 16:17:38,187 WARN L202 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:17:38,943 WARN L202 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:17:44,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:17:44,342 INFO L93 Difference]: Finished difference Result 4020 states and 5138 transitions. [2021-02-23 16:17:44,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-02-23 16:17:44,342 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 205 [2021-02-23 16:17:44,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:17:44,362 INFO L225 Difference]: With dead ends: 4020 [2021-02-23 16:17:44,362 INFO L226 Difference]: Without dead ends: 3140 [2021-02-23 16:17:44,368 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 40 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 538 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=338, Invalid=1302, Unknown=0, NotChecked=0, Total=1640 [2021-02-23 16:17:44,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3140 states. [2021-02-23 16:17:45,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3140 to 2152. [2021-02-23 16:17:45,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2152 states. [2021-02-23 16:17:45,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2152 states to 2152 states and 2448 transitions. [2021-02-23 16:17:45,451 INFO L78 Accepts]: Start accepts. Automaton has 2152 states and 2448 transitions. Word has length 205 [2021-02-23 16:17:45,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:17:45,452 INFO L480 AbstractCegarLoop]: Abstraction has 2152 states and 2448 transitions. [2021-02-23 16:17:45,452 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-23 16:17:45,452 INFO L276 IsEmpty]: Start isEmpty. Operand 2152 states and 2448 transitions. [2021-02-23 16:17:45,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2021-02-23 16:17:45,459 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:17:45,459 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 16:17:45,459 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-02-23 16:17:45,459 INFO L428 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:17:45,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:17:45,460 INFO L82 PathProgramCache]: Analyzing trace with hash -1625851260, now seen corresponding path program 1 times [2021-02-23 16:17:45,460 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:17:45,460 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [767907941] [2021-02-23 16:17:45,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:17:45,464 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:17:45,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:45,540 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:45,540 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:45,541 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:45,541 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:17:45,544 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:45,544 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:17:45,545 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:45,545 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:17:45,546 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:45,546 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:17:45,547 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:45,547 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:45,838 WARN L202 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:17:45,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:17:45,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:45,872 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:45,873 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:45,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-02-23 16:17:45,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:45,885 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:45,888 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:45,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-02-23 16:17:45,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:45,892 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:45,893 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:45,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-02-23 16:17:45,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:45,898 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:45,900 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:45,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-02-23 16:17:45,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:45,905 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:45,906 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:45,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-02-23 16:17:45,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:45,918 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:45,918 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:17:45,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-23 16:17:45,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:45,929 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:45,929 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:45,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-23 16:17:45,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:45,947 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:45,948 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:45,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-02-23 16:17:45,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:45,961 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:45,961 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:45,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-02-23 16:17:45,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:45,978 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:45,978 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:45,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 16:17:45,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:45,982 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:45,982 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:45,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 16:17:45,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:45,984 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:45,985 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:45,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-23 16:17:45,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:45,987 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:45,988 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:45,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-02-23 16:17:45,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:45,991 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:45,992 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:45,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2021-02-23 16:17:45,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:45,994 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:45,994 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:46,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:17:46,081 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [767907941] [2021-02-23 16:17:46,081 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:17:46,081 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-23 16:17:46,081 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224356339] [2021-02-23 16:17:46,082 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-23 16:17:46,082 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:17:46,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-23 16:17:46,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-02-23 16:17:46,083 INFO L87 Difference]: Start difference. First operand 2152 states and 2448 transitions. Second operand 9 states. [2021-02-23 16:17:46,749 WARN L202 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:17:52,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:17:52,628 INFO L93 Difference]: Finished difference Result 4987 states and 6478 transitions. [2021-02-23 16:17:52,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-02-23 16:17:52,629 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 210 [2021-02-23 16:17:52,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:17:52,662 INFO L225 Difference]: With dead ends: 4987 [2021-02-23 16:17:52,662 INFO L226 Difference]: Without dead ends: 4984 [2021-02-23 16:17:52,666 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 493 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=373, Invalid=1267, Unknown=0, NotChecked=0, Total=1640 [2021-02-23 16:17:52,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4984 states. [2021-02-23 16:17:54,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4984 to 3381. [2021-02-23 16:17:54,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3381 states. [2021-02-23 16:17:54,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3381 states to 3381 states and 3934 transitions. [2021-02-23 16:17:54,487 INFO L78 Accepts]: Start accepts. Automaton has 3381 states and 3934 transitions. Word has length 210 [2021-02-23 16:17:54,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:17:54,488 INFO L480 AbstractCegarLoop]: Abstraction has 3381 states and 3934 transitions. [2021-02-23 16:17:54,488 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-23 16:17:54,488 INFO L276 IsEmpty]: Start isEmpty. Operand 3381 states and 3934 transitions. [2021-02-23 16:17:54,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2021-02-23 16:17:54,503 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:17:54,505 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 16:17:54,505 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-02-23 16:17:54,506 INFO L428 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:17:54,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:17:54,506 INFO L82 PathProgramCache]: Analyzing trace with hash 1877792148, now seen corresponding path program 1 times [2021-02-23 16:17:54,506 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:17:54,507 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [373116279] [2021-02-23 16:17:54,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:17:54,576 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2021-02-23 16:17:54,924 WARN L202 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 100 [2021-02-23 16:17:54,934 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:54,938 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 175 [2021-02-23 16:17:54,963 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:54,964 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:55,286 WARN L202 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 100 [2021-02-23 16:17:55,305 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:55,313 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 179 [2021-02-23 16:17:55,336 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:55,336 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:55,356 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:55,357 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:55,682 WARN L202 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 99 [2021-02-23 16:17:55,696 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:55,698 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 171 [2021-02-23 16:17:55,718 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:55,719 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:55,738 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:55,739 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:55,758 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:55,759 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:55,779 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:55,780 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:55,801 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:55,802 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:55,822 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:55,823 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:55,841 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:55,842 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:55,860 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:55,860 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:55,878 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:55,879 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:55,895 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:55,895 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:55,919 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:55,919 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:55,940 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:55,941 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:55,960 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:55,960 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:55,978 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:55,978 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:55,997 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:55,997 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:56,322 WARN L202 SmtUtils]: Spent 309.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 99 [2021-02-23 16:17:56,327 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:56,336 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 183 [2021-02-23 16:17:56,353 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:56,354 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:56,370 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:56,370 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:56,385 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:56,385 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:56,403 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:56,403 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:56,421 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:56,421 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:56,439 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:56,440 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:56,454 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:56,455 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:56,471 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:56,477 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:56,496 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:56,497 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:56,783 WARN L202 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 100 [2021-02-23 16:17:56,788 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:56,791 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 175 [2021-02-23 16:17:56,805 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:56,806 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:56,827 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:56,827 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:57,134 WARN L202 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 100 [2021-02-23 16:17:57,140 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:57,143 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 179 [2021-02-23 16:17:57,162 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:57,162 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:57,178 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:57,178 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:57,197 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:57,198 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:57,487 WARN L202 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 100 [2021-02-23 16:17:57,493 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:57,494 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 175 [2021-02-23 16:17:57,513 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:57,513 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:57,527 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:57,528 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:57,546 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:57,547 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:57,564 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:57,565 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:57,579 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:57,579 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:57,595 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:57,596 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:57,609 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:57,609 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:57,625 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:57,626 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:57,640 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:57,641 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:57,654 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:57,655 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:57,671 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:57,671 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:57,689 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:57,690 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:57,706 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:57,707 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:57,725 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:57,725 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:57,743 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:57,743 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:57,762 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:57,762 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:57,780 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:57,780 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:58,135 WARN L202 SmtUtils]: Spent 342.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 100 [2021-02-23 16:17:58,139 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:58,142 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 179 [2021-02-23 16:17:58,155 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:58,156 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:58,172 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:58,172 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:58,188 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:58,188 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:58,204 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:58,205 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:58,219 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:58,220 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:58,235 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:58,235 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:58,251 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:58,251 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:58,252 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-02-23 16:17:58,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 16:17:58,520 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 16:17:58,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 16:17:58,723 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 16:17:59,121 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-23 16:17:59,121 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-23 16:17:59,123 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-02-23 16:17:59,175 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 04:17:59 BoogieIcfgContainer [2021-02-23 16:17:59,175 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 16:17:59,177 INFO L168 Benchmark]: Toolchain (without parser) took 68770.97 ms. Allocated memory was 151.0 MB in the beginning and 1.3 GB in the end (delta: 1.2 GB). Free memory was 126.9 MB in the beginning and 1.1 GB in the end (delta: -944.2 MB). Peak memory consumption was 241.2 MB. Max. memory is 8.0 GB. [2021-02-23 16:17:59,178 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 151.0 MB. Free memory is still 123.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 16:17:59,178 INFO L168 Benchmark]: CACSL2BoogieTranslator took 638.82 ms. Allocated memory is still 151.0 MB. Free memory was 125.8 MB in the beginning and 105.1 MB in the end (delta: 20.7 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. [2021-02-23 16:17:59,178 INFO L168 Benchmark]: Boogie Preprocessor took 126.32 ms. Allocated memory is still 151.0 MB. Free memory was 104.9 MB in the beginning and 101.1 MB in the end (delta: 3.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2021-02-23 16:17:59,178 INFO L168 Benchmark]: RCFGBuilder took 1299.53 ms. Allocated memory was 151.0 MB in the beginning and 186.6 MB in the end (delta: 35.7 MB). Free memory was 101.1 MB in the beginning and 121.9 MB in the end (delta: -20.8 MB). Peak memory consumption was 30.7 MB. Max. memory is 8.0 GB. [2021-02-23 16:17:59,179 INFO L168 Benchmark]: TraceAbstraction took 66682.51 ms. Allocated memory was 186.6 MB in the beginning and 1.3 GB in the end (delta: 1.1 GB). Free memory was 121.4 MB in the beginning and 1.1 GB in the end (delta: -949.7 MB). Peak memory consumption was 199.0 MB. Max. memory is 8.0 GB. [2021-02-23 16:17:59,179 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 151.0 MB. Free memory is still 123.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 638.82 ms. Allocated memory is still 151.0 MB. Free memory was 125.8 MB in the beginning and 105.1 MB in the end (delta: 20.7 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 126.32 ms. Allocated memory is still 151.0 MB. Free memory was 104.9 MB in the beginning and 101.1 MB in the end (delta: 3.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1299.53 ms. Allocated memory was 151.0 MB in the beginning and 186.6 MB in the end (delta: 35.7 MB). Free memory was 101.1 MB in the beginning and 121.9 MB in the end (delta: -20.8 MB). Peak memory consumption was 30.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 66682.51 ms. Allocated memory was 186.6 MB in the beginning and 1.3 GB in the end (delta: 1.1 GB). Free memory was 121.4 MB in the beginning and 1.1 GB in the end (delta: -949.7 MB). Peak memory consumption was 199.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 902]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L49] int waterLevel = 1; [L50] int methaneLevelCritical = 0; [L312] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L547] int cleanupTimeShifts = 4; [L653] int pumpRunning = 0; [L654] int systemActive = 1; [L907] int methAndRunningLastTime ; [L625] int retValue_acc ; [L626] int tmp ; [L630] FCALL select_helpers() [L631] FCALL select_features() [L632] CALL, EXPR valid_product() [L538] int retValue_acc ; [L541] retValue_acc = 1 [L542] return (retValue_acc); [L632] RET, EXPR valid_product() [L632] tmp = valid_product() [L634] COND TRUE \read(tmp) [L636] FCALL setup() [L637] CALL runTest() [L618] CALL __utac_acc__Specification2_spec__1() [L912] methAndRunningLastTime = 0 [L618] RET __utac_acc__Specification2_spec__1() [L619] CALL test() [L830] int splverifierCounter ; [L831] int tmp ; [L832] int tmp___0 ; [L833] int tmp___1 ; [L834] int tmp___2 ; [L837] splverifierCounter = 0 [L839] COND TRUE 1 [L841] COND TRUE splverifierCounter < 4 [L847] tmp = __VERIFIER_nondet_int() [L849] COND TRUE \read(tmp) [L851] CALL waterRise() [L67] COND TRUE waterLevel < 2 [L68] waterLevel = waterLevel + 1 [L851] RET waterRise() [L857] tmp___0 = __VERIFIER_nondet_int() [L859] COND TRUE \read(tmp___0) [L861] CALL changeMethaneLevel() [L79] COND FALSE !(\read(methaneLevelCritical)) [L82] methaneLevelCritical = 1 [L861] RET changeMethaneLevel() [L867] tmp___2 = __VERIFIER_nondet_int() [L869] COND TRUE \read(tmp___2) [L871] CALL startSystem() [L824] systemActive = 1 [L871] RET startSystem() [L886] CALL timeShift() [L661] COND FALSE !(\read(pumpRunning)) [L668] COND TRUE \read(systemActive) [L670] CALL processEnvironment() [L690] int tmp ; [L693] COND TRUE ! pumpRunning [L695] CALL, EXPR isHighWaterLevel() [L787] int retValue_acc ; [L788] int tmp ; [L789] int tmp___0 ; [L793] CALL, EXPR isHighWaterSensorDry() [L129] int retValue_acc ; [L132] COND FALSE !(waterLevel < 2) [L136] retValue_acc = 0 [L137] return (retValue_acc); [L793] RET, EXPR isHighWaterSensorDry() [L793] tmp = isHighWaterSensorDry() [L795] COND FALSE !(\read(tmp)) [L798] tmp___0 = 1 [L800] retValue_acc = tmp___0 [L801] return (retValue_acc); [L695] RET, EXPR isHighWaterLevel() [L695] tmp = isHighWaterLevel() [L697] COND TRUE \read(tmp) [L699] CALL activatePump() [L718] pumpRunning = 1 [L699] RET activatePump() [L670] RET processEnvironment() [L676] CALL __utac_acc__Specification2_spec__2() [L917] int tmp ; [L918] int tmp___0 ; [L922] CALL, EXPR isMethaneLevelCritical() [L88] int retValue_acc ; [L91] retValue_acc = methaneLevelCritical [L92] return (retValue_acc); [L922] RET, EXPR isMethaneLevelCritical() [L922] tmp = isMethaneLevelCritical() [L924] COND TRUE \read(tmp) [L926] CALL, EXPR isPumpRunning() [L742] int retValue_acc ; [L745] retValue_acc = pumpRunning [L746] return (retValue_acc); [L926] RET, EXPR isPumpRunning() [L926] tmp___0 = isPumpRunning() [L928] COND TRUE \read(tmp___0) [L929] COND FALSE !(\read(methAndRunningLastTime)) [L934] methAndRunningLastTime = 1 [L676] RET __utac_acc__Specification2_spec__2() [L886] RET timeShift() [L839] COND TRUE 1 [L841] COND TRUE splverifierCounter < 4 [L847] tmp = __VERIFIER_nondet_int() [L849] COND FALSE !(\read(tmp)) [L857] tmp___0 = __VERIFIER_nondet_int() [L859] COND FALSE !(\read(tmp___0)) [L867] tmp___2 = __VERIFIER_nondet_int() [L869] COND TRUE \read(tmp___2) [L871] CALL startSystem() [L824] systemActive = 1 [L871] RET startSystem() [L886] CALL timeShift() [L661] COND TRUE \read(pumpRunning) [L663] CALL lowerWaterLevel() [L55] COND TRUE waterLevel > 0 [L56] waterLevel = waterLevel - 1 [L663] RET lowerWaterLevel() [L668] COND TRUE \read(systemActive) [L670] CALL processEnvironment() [L690] int tmp ; [L693] COND FALSE !(! pumpRunning) [L708] FCALL processEnvironment__wrappee__base() [L670] RET processEnvironment() [L676] CALL __utac_acc__Specification2_spec__2() [L917] int tmp ; [L918] int tmp___0 ; [L922] CALL, EXPR isMethaneLevelCritical() [L88] int retValue_acc ; [L91] retValue_acc = methaneLevelCritical [L92] return (retValue_acc); [L922] RET, EXPR isMethaneLevelCritical() [L922] tmp = isMethaneLevelCritical() [L924] COND TRUE \read(tmp) [L926] CALL, EXPR isPumpRunning() [L742] int retValue_acc ; [L745] retValue_acc = pumpRunning [L746] return (retValue_acc); [L926] RET, EXPR isPumpRunning() [L926] tmp___0 = isPumpRunning() [L928] COND TRUE \read(tmp___0) [L929] COND TRUE \read(methAndRunningLastTime) [L931] CALL __automaton_fail() [L902] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 41 procedures, 634 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 66.5s, OverallIterations: 10, TraceHistogramMax: 2, AutomataDifference: 50.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2198 SDtfs, 7428 SDslu, 5093 SDs, 0 SdLazy, 10311 SolverSat, 2416 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 21.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 483 GetRequests, 259 SyntacticMatches, 2 SemanticMatches, 222 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1794 ImplicationChecksByTransitivity, 20.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3381occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 5.3s AutomataMinimizationTime, 9 MinimizatonAttempts, 4499 StatesRemovedByMinimization, 9 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...