/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_spec4_product39.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 19:30:34,824 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 19:30:34,828 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 19:30:34,900 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 19:30:34,900 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 19:30:34,907 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 19:30:34,913 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 19:30:34,923 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 19:30:34,928 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 19:30:34,937 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 19:30:34,939 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 19:30:34,941 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 19:30:34,942 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 19:30:34,946 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 19:30:34,949 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 19:30:34,951 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 19:30:34,957 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 19:30:34,974 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 19:30:34,984 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 19:30:34,989 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 19:30:34,993 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 19:30:34,996 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 19:30:34,999 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 19:30:35,001 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 19:30:35,010 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-21 19:30:35,010 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-21 19:30:35,011 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-21 19:30:35,013 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-21 19:30:35,014 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-21 19:30:35,015 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-21 19:30:35,015 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-21 19:30:35,017 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-21 19:30:35,019 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-21 19:30:35,020 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-21 19:30:35,021 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-21 19:30:35,021 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-21 19:30:35,022 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-21 19:30:35,023 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-21 19:30:35,023 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 19:30:35,025 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 19:30:35,027 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 19:30:35,028 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-21 19:30:35,053 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 19:30:35,053 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 19:30:35,059 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 19:30:35,060 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 19:30:35,060 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 19:30:35,060 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 19:30:35,060 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 19:30:35,061 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 19:30:35,061 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 19:30:35,062 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 19:30:35,063 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 19:30:35,063 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 19:30:35,063 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 19:30:35,064 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 19:30:35,064 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 19:30:35,064 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 19:30:35,064 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 19:30:35,065 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 19:30:35,065 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 19:30:35,065 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 19:30:35,065 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 19:30:35,065 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 19:30:35,066 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 19:30:35,513 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 19:30:35,547 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 19:30:35,551 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 19:30:35,553 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 19:30:35,554 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 19:30:35,555 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product39.cil.c [2021-02-21 19:30:35,657 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f8bb65204/0c67eff9bcff48a4af1081cf9cd4a939/FLAGcbb8aa94b [2021-02-21 19:30:36,517 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 19:30:36,518 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product39.cil.c [2021-02-21 19:30:36,537 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f8bb65204/0c67eff9bcff48a4af1081cf9cd4a939/FLAGcbb8aa94b [2021-02-21 19:30:36,756 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f8bb65204/0c67eff9bcff48a4af1081cf9cd4a939 [2021-02-21 19:30:36,761 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 19:30:36,780 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 19:30:36,785 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 19:30:36,786 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 19:30:36,790 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 19:30:36,792 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 07:30:36" (1/1) ... [2021-02-21 19:30:36,793 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@579a3d92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:30:36, skipping insertion in model container [2021-02-21 19:30:36,793 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 07:30:36" (1/1) ... [2021-02-21 19:30:36,805 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 19:30:36,900 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 19:30:37,311 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_spec4_product39.cil.c[15172,15185] [2021-02-21 19:30:37,356 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 19:30:37,383 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 19:30:37,540 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_spec4_product39.cil.c[15172,15185] [2021-02-21 19:30:37,555 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 19:30:37,598 INFO L208 MainTranslator]: Completed translation [2021-02-21 19:30:37,598 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:30:37 WrapperNode [2021-02-21 19:30:37,599 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 19:30:37,600 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 19:30:37,600 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 19:30:37,600 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 19:30:37,618 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:30:37" (1/1) ... [2021-02-21 19:30:37,619 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:30:37" (1/1) ... [2021-02-21 19:30:37,661 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:30:37" (1/1) ... [2021-02-21 19:30:37,662 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:30:37" (1/1) ... [2021-02-21 19:30:37,760 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:30:37" (1/1) ... [2021-02-21 19:30:37,785 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:30:37" (1/1) ... [2021-02-21 19:30:37,795 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:30:37" (1/1) ... [2021-02-21 19:30:37,818 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 19:30:37,819 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 19:30:37,819 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 19:30:37,819 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 19:30:37,823 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:30:37" (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 [2021-02-21 19:30:37,960 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 19:30:37,961 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 19:30:37,961 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-21 19:30:37,961 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 19:30:37,962 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-21 19:30:37,962 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-21 19:30:37,962 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-21 19:30:37,962 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-21 19:30:37,963 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-21 19:30:37,963 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-21 19:30:37,964 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-21 19:30:37,964 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-21 19:30:37,964 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-21 19:30:37,965 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-21 19:30:37,965 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-21 19:30:37,965 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-21 19:30:37,966 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-02-21 19:30:37,966 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2021-02-21 19:30:37,967 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-21 19:30:37,967 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-21 19:30:37,970 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-21 19:30:37,970 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-21 19:30:37,971 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-21 19:30:37,971 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-21 19:30:37,971 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2021-02-21 19:30:37,971 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2021-02-21 19:30:37,971 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-21 19:30:37,972 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-21 19:30:37,972 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-21 19:30:37,972 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-21 19:30:37,972 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-21 19:30:37,973 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-21 19:30:37,973 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-21 19:30:37,973 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2021-02-21 19:30:37,973 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-21 19:30:37,973 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-21 19:30:37,973 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-21 19:30:37,974 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-21 19:30:37,974 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 19:30:37,974 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2021-02-21 19:30:37,975 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 19:30:37,975 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 19:30:37,975 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 19:30:37,975 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 19:30:37,976 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-21 19:30:37,976 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-21 19:30:37,976 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-21 19:30:37,976 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-21 19:30:37,977 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-21 19:30:37,977 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-21 19:30:37,977 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-21 19:30:37,977 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-21 19:30:37,977 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-21 19:30:37,978 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-21 19:30:37,978 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-21 19:30:37,978 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 19:30:37,978 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-21 19:30:37,978 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-21 19:30:37,978 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 19:30:37,979 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-21 19:30:37,979 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-21 19:30:37,979 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 19:30:37,979 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-21 19:30:37,979 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-21 19:30:37,980 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-21 19:30:37,980 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-21 19:30:37,980 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-21 19:30:37,980 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2021-02-21 19:30:37,980 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-21 19:30:37,980 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-21 19:30:37,981 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-21 19:30:37,982 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-21 19:30:37,982 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-21 19:30:37,982 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-21 19:30:37,982 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2021-02-21 19:30:37,983 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-21 19:30:37,983 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-21 19:30:37,983 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-21 19:30:37,984 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-21 19:30:37,985 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2021-02-21 19:30:37,985 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-21 19:30:37,985 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-02-21 19:30:37,985 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2021-02-21 19:30:37,985 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2021-02-21 19:30:37,986 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-21 19:30:37,987 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-21 19:30:37,987 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-21 19:30:37,987 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-21 19:30:37,987 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-21 19:30:37,988 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-21 19:30:37,988 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 19:30:37,988 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 19:30:37,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 19:30:37,989 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 19:30:39,550 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 19:30:39,551 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-21 19:30:39,557 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 07:30:39 BoogieIcfgContainer [2021-02-21 19:30:39,558 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 19:30:39,561 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 19:30:39,561 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 19:30:39,565 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 19:30:39,566 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 07:30:36" (1/3) ... [2021-02-21 19:30:39,567 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fb1f52e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 07:30:39, skipping insertion in model container [2021-02-21 19:30:39,567 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:30:37" (2/3) ... [2021-02-21 19:30:39,568 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fb1f52e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 07:30:39, skipping insertion in model container [2021-02-21 19:30:39,568 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 07:30:39" (3/3) ... [2021-02-21 19:30:39,570 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product39.cil.c [2021-02-21 19:30:39,579 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 19:30:39,586 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 19:30:39,607 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 19:30:39,642 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 19:30:39,642 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 19:30:39,642 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 19:30:39,642 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 19:30:39,643 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 19:30:39,643 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 19:30:39,643 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 19:30:39,643 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 19:30:39,670 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states. [2021-02-21 19:30:39,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-02-21 19:30:39,695 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:30:39,696 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] [2021-02-21 19:30:39,697 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:30:39,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:30:39,704 INFO L82 PathProgramCache]: Analyzing trace with hash -250568010, now seen corresponding path program 1 times [2021-02-21 19:30:39,714 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:30:39,715 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1341234918] [2021-02-21 19:30:39,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:30:39,801 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:30:39,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:30:40,275 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:30:40,277 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:30:40,278 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:30:40,279 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:30:40,666 WARN L202 SmtUtils]: Spent 369.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:30:40,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:30:40,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:30:40,803 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:30:40,803 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:30:40,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:30:40,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:30:40,831 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:30:40,832 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:30:40,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:30:40,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:30:40,836 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:30:40,836 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:30:40,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:30:40,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:30:40,841 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:30:40,842 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:30:40,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:30:40,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:30:40,846 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:30:40,846 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:30:40,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-21 19:30:40,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:30:40,852 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:30:40,853 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:30:40,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-21 19:30:40,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:30:40,857 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:30:40,858 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:30:40,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 19:30:40,898 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1341234918] [2021-02-21 19:30:40,900 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:30:40,900 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-21 19:30:40,901 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589002061] [2021-02-21 19:30:40,908 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-21 19:30:40,908 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:30:40,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-21 19:30:40,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 19:30:40,928 INFO L87 Difference]: Start difference. First operand 318 states. Second operand 3 states. [2021-02-21 19:30:42,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:30:42,906 INFO L93 Difference]: Finished difference Result 497 states and 591 transitions. [2021-02-21 19:30:42,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-21 19:30:42,910 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 147 [2021-02-21 19:30:42,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:30:42,929 INFO L225 Difference]: With dead ends: 497 [2021-02-21 19:30:42,929 INFO L226 Difference]: Without dead ends: 309 [2021-02-21 19:30:42,936 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 19:30:42,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2021-02-21 19:30:43,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 266. [2021-02-21 19:30:43,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2021-02-21 19:30:43,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 289 transitions. [2021-02-21 19:30:43,176 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 289 transitions. Word has length 147 [2021-02-21 19:30:43,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:30:43,178 INFO L480 AbstractCegarLoop]: Abstraction has 266 states and 289 transitions. [2021-02-21 19:30:43,178 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-21 19:30:43,178 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 289 transitions. [2021-02-21 19:30:43,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-02-21 19:30:43,187 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:30:43,188 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] [2021-02-21 19:30:43,188 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 19:30:43,188 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:30:43,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:30:43,189 INFO L82 PathProgramCache]: Analyzing trace with hash 878362011, now seen corresponding path program 1 times [2021-02-21 19:30:43,189 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:30:43,190 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [837158287] [2021-02-21 19:30:43,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:30:43,196 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:30:43,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:30:43,326 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:30:43,327 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:30:43,329 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:30:43,330 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:30:43,334 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:30:43,335 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:30:43,657 WARN L202 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:30:43,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:30:43,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:30:43,705 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:30:43,706 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:30:43,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:30:43,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:30:43,715 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:30:43,715 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:30:43,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:30:43,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:30:43,720 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:30:43,720 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:30:43,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:30:43,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:30:43,724 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:30:43,724 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:30:43,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:30:43,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:30:43,727 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:30:43,728 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:30:43,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-21 19:30:43,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:30:43,732 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:30:43,733 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:30:43,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-21 19:30:43,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:30:43,736 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:30:43,737 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:30:43,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 19:30:43,784 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [837158287] [2021-02-21 19:30:43,785 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:30:43,785 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 19:30:43,785 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803644480] [2021-02-21 19:30:43,786 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 19:30:43,787 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:30:43,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 19:30:43,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 19:30:43,788 INFO L87 Difference]: Start difference. First operand 266 states and 289 transitions. Second operand 4 states. [2021-02-21 19:30:44,645 WARN L202 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 19:30:45,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:30:45,952 INFO L93 Difference]: Finished difference Result 407 states and 457 transitions. [2021-02-21 19:30:45,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-21 19:30:45,954 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2021-02-21 19:30:45,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:30:45,959 INFO L225 Difference]: With dead ends: 407 [2021-02-21 19:30:45,960 INFO L226 Difference]: Without dead ends: 292 [2021-02-21 19:30:45,962 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-21 19:30:45,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2021-02-21 19:30:46,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 256. [2021-02-21 19:30:46,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 256 states. [2021-02-21 19:30:46,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 276 transitions. [2021-02-21 19:30:46,123 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 276 transitions. Word has length 148 [2021-02-21 19:30:46,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:30:46,124 INFO L480 AbstractCegarLoop]: Abstraction has 256 states and 276 transitions. [2021-02-21 19:30:46,124 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 19:30:46,124 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 276 transitions. [2021-02-21 19:30:46,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-02-21 19:30:46,128 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:30:46,128 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] [2021-02-21 19:30:46,129 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 19:30:46,129 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:30:46,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:30:46,130 INFO L82 PathProgramCache]: Analyzing trace with hash -2041974236, now seen corresponding path program 1 times [2021-02-21 19:30:46,130 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:30:46,130 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1869099699] [2021-02-21 19:30:46,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:30:46,135 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:30:46,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:30:46,243 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:30:46,244 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:30:46,249 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:30:46,250 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:30:46,251 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:30:46,251 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:30:46,256 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:30:46,257 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:30:46,263 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:30:46,264 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:30:46,272 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:30:46,273 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:30:46,274 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:30:46,274 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:30:46,275 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:30:46,275 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:30:46,637 WARN L202 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:30:46,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:30:46,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:30:46,698 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:30:46,699 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:30:46,700 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:30:46,701 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 19:30:46,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:30:46,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:30:46,712 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:30:46,713 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:30:46,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:30:46,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:30:46,717 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:30:46,718 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:30:46,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:30:46,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:30:46,729 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:30:46,729 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:30:46,739 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:30:46,740 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 19:30:46,761 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-21 19:30:46,763 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-21 19:30:46,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:30:46,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:30:46,784 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:30:46,785 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:30:46,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-21 19:30:46,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:30:46,790 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:30:46,791 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:30:46,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-02-21 19:30:46,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:30:46,795 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:30:46,797 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:30:46,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 19:30:46,863 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1869099699] [2021-02-21 19:30:46,863 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:30:46,863 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-21 19:30:46,864 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62753478] [2021-02-21 19:30:46,864 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-21 19:30:46,864 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:30:46,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-21 19:30:46,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-21 19:30:46,865 INFO L87 Difference]: Start difference. First operand 256 states and 276 transitions. Second operand 9 states. [2021-02-21 19:30:47,542 WARN L202 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:30:48,047 WARN L202 SmtUtils]: Spent 372.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 19:30:48,443 WARN L202 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 19:30:48,859 WARN L202 SmtUtils]: Spent 369.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:30:49,265 WARN L202 SmtUtils]: Spent 369.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:30:49,658 WARN L202 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:30:50,745 WARN L202 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 19:30:53,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:30:53,504 INFO L93 Difference]: Finished difference Result 669 states and 769 transitions. [2021-02-21 19:30:53,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-21 19:30:53,505 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 157 [2021-02-21 19:30:53,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:30:53,510 INFO L225 Difference]: With dead ends: 669 [2021-02-21 19:30:53,510 INFO L226 Difference]: Without dead ends: 528 [2021-02-21 19:30:53,512 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2021-02-21 19:30:53,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 528 states. [2021-02-21 19:30:53,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 528 to 461. [2021-02-21 19:30:53,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 461 states. [2021-02-21 19:30:53,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 515 transitions. [2021-02-21 19:30:53,800 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 515 transitions. Word has length 157 [2021-02-21 19:30:53,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:30:53,801 INFO L480 AbstractCegarLoop]: Abstraction has 461 states and 515 transitions. [2021-02-21 19:30:53,801 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-21 19:30:53,801 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 515 transitions. [2021-02-21 19:30:53,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-02-21 19:30:53,804 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:30:53,805 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] [2021-02-21 19:30:53,805 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 19:30:53,805 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:30:53,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:30:53,806 INFO L82 PathProgramCache]: Analyzing trace with hash -1484265414, now seen corresponding path program 1 times [2021-02-21 19:30:53,806 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:30:53,807 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1467776340] [2021-02-21 19:30:53,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:30:53,810 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:30:53,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:30:53,900 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:30:53,901 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:30:53,905 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:30:53,905 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:30:53,906 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:30:53,906 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:30:53,912 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:30:53,912 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:30:53,917 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:30:53,918 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:30:53,926 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:30:53,927 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:30:53,927 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:30:53,929 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:30:53,930 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:30:53,935 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:30:53,936 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:30:53,936 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:30:53,944 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:30:53,944 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:30:53,952 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:30:53,953 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:30:54,322 WARN L202 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:30:54,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:30:54,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:30:54,405 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:30:54,409 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:30:54,411 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:30:54,412 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 19:30:54,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:30:54,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:30:54,429 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:30:54,430 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:30:54,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:30:54,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:30:54,434 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:30:54,435 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:30:54,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:30:54,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:30:54,446 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:30:54,447 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:30:54,449 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:30:54,451 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 19:30:54,475 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-21 19:30:54,478 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-21 19:30:54,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:30:54,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:30:54,502 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:30:54,503 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:30:54,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-02-21 19:30:54,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:30:54,529 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:30:54,530 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:30:54,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-02-21 19:30:54,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:30:54,538 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:30:54,540 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:30:54,540 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:30:54,541 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:30:54,560 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:30:54,561 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:30:54,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-02-21 19:30:54,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:30:54,584 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:30:54,589 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:30:54,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 19:30:54,646 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1467776340] [2021-02-21 19:30:54,646 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:30:54,647 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-02-21 19:30:54,647 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177167214] [2021-02-21 19:30:54,647 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-02-21 19:30:54,648 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:30:54,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-02-21 19:30:54,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2021-02-21 19:30:54,650 INFO L87 Difference]: Start difference. First operand 461 states and 515 transitions. Second operand 14 states. [2021-02-21 19:30:55,314 WARN L202 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:30:55,809 WARN L202 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 19:30:56,225 WARN L202 SmtUtils]: Spent 384.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 19:30:56,621 WARN L202 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:30:57,000 WARN L202 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:30:57,392 WARN L202 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:30:58,235 WARN L202 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 19:30:59,834 WARN L202 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:31:00,379 WARN L202 SmtUtils]: Spent 377.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:31:00,995 WARN L202 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:31:01,463 WARN L202 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 19:31:01,863 WARN L202 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:31:02,250 WARN L202 SmtUtils]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-21 19:31:02,665 WARN L202 SmtUtils]: Spent 372.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 19:31:03,090 WARN L202 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:31:03,480 WARN L202 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:31:04,045 WARN L202 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:31:04,546 WARN L202 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-21 19:31:04,957 WARN L202 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:31:05,448 WARN L202 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:31:07,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:31:07,782 INFO L93 Difference]: Finished difference Result 1581 states and 1984 transitions. [2021-02-21 19:31:07,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-02-21 19:31:07,783 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 166 [2021-02-21 19:31:07,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:31:07,794 INFO L225 Difference]: With dead ends: 1581 [2021-02-21 19:31:07,794 INFO L226 Difference]: Without dead ends: 1235 [2021-02-21 19:31:07,798 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=252, Invalid=1008, Unknown=0, NotChecked=0, Total=1260 [2021-02-21 19:31:07,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1235 states. [2021-02-21 19:31:08,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1235 to 1100. [2021-02-21 19:31:08,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1100 states. [2021-02-21 19:31:08,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1100 states to 1100 states and 1300 transitions. [2021-02-21 19:31:08,512 INFO L78 Accepts]: Start accepts. Automaton has 1100 states and 1300 transitions. Word has length 166 [2021-02-21 19:31:08,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:31:08,513 INFO L480 AbstractCegarLoop]: Abstraction has 1100 states and 1300 transitions. [2021-02-21 19:31:08,513 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-02-21 19:31:08,513 INFO L276 IsEmpty]: Start isEmpty. Operand 1100 states and 1300 transitions. [2021-02-21 19:31:08,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-02-21 19:31:08,523 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:31:08,523 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] [2021-02-21 19:31:08,523 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-21 19:31:08,523 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:31:08,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:31:08,524 INFO L82 PathProgramCache]: Analyzing trace with hash 1852844756, now seen corresponding path program 1 times [2021-02-21 19:31:08,524 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:31:08,524 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [606810765] [2021-02-21 19:31:08,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:31:08,528 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:31:08,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:31:08,644 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:31:08,644 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:31:08,648 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:31:08,648 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:31:08,652 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:31:08,653 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:31:08,654 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:31:08,655 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:31:08,656 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:31:08,657 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:31:08,658 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:31:08,659 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:31:08,659 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:31:08,660 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:31:08,944 WARN L202 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:31:08,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:31:08,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:31:09,011 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:31:09,019 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:31:09,020 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:31:09,020 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:31:09,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:31:09,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:31:09,068 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:31:09,069 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:31:09,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:31:09,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:31:09,073 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:31:09,073 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:31:09,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:31:09,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:31:09,076 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:31:09,077 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:31:09,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:31:09,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:31:09,080 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:31:09,081 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:31:09,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-02-21 19:31:09,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:31:09,104 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:31:09,104 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:31:09,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-02-21 19:31:09,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:31:09,114 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:31:09,115 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:31:09,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-02-21 19:31:09,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:31:09,121 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:31:09,122 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:31:09,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-02-21 19:31:09,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:31:09,125 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:31:09,126 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:31:09,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 19:31:09,175 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [606810765] [2021-02-21 19:31:09,175 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:31:09,175 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-21 19:31:09,175 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030548761] [2021-02-21 19:31:09,176 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-21 19:31:09,176 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:31:09,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-21 19:31:09,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-21 19:31:09,178 INFO L87 Difference]: Start difference. First operand 1100 states and 1300 transitions. Second operand 6 states. [2021-02-21 19:31:09,825 WARN L202 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:31:12,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:31:12,715 INFO L93 Difference]: Finished difference Result 2533 states and 3181 transitions. [2021-02-21 19:31:12,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-02-21 19:31:12,715 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 171 [2021-02-21 19:31:12,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:31:12,727 INFO L225 Difference]: With dead ends: 2533 [2021-02-21 19:31:12,728 INFO L226 Difference]: Without dead ends: 1548 [2021-02-21 19:31:12,732 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-02-21 19:31:12,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1548 states. [2021-02-21 19:31:13,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1548 to 1425. [2021-02-21 19:31:13,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1425 states. [2021-02-21 19:31:13,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1425 states to 1425 states and 1681 transitions. [2021-02-21 19:31:13,449 INFO L78 Accepts]: Start accepts. Automaton has 1425 states and 1681 transitions. Word has length 171 [2021-02-21 19:31:13,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:31:13,450 INFO L480 AbstractCegarLoop]: Abstraction has 1425 states and 1681 transitions. [2021-02-21 19:31:13,450 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-21 19:31:13,450 INFO L276 IsEmpty]: Start isEmpty. Operand 1425 states and 1681 transitions. [2021-02-21 19:31:13,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2021-02-21 19:31:13,455 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:31:13,456 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 19:31:13,456 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-21 19:31:13,456 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:31:13,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:31:13,457 INFO L82 PathProgramCache]: Analyzing trace with hash 999941277, now seen corresponding path program 1 times [2021-02-21 19:31:13,457 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:31:13,457 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1915002849] [2021-02-21 19:31:13,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY