/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_product32.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 19:29:16,013 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 19:29:16,018 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 19:29:16,078 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 19:29:16,079 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 19:29:16,083 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 19:29:16,087 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 19:29:16,096 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 19:29:16,099 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 19:29:16,108 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 19:29:16,110 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 19:29:16,112 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 19:29:16,113 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 19:29:16,116 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 19:29:16,119 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 19:29:16,121 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 19:29:16,126 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 19:29:16,128 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 19:29:16,137 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 19:29:16,146 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 19:29:16,148 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 19:29:16,153 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 19:29:16,154 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 19:29:16,157 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 19:29:16,167 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-21 19:29:16,167 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-21 19:29:16,168 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-21 19:29:16,171 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-21 19:29:16,171 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-21 19:29:16,172 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-21 19:29:16,173 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-21 19:29:16,174 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-21 19:29:16,176 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-21 19:29:16,177 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-21 19:29:16,178 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-21 19:29:16,179 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-21 19:29:16,179 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-21 19:29:16,180 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-21 19:29:16,180 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 19:29:16,181 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 19:29:16,182 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 19:29:16,184 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 19:29:16,208 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 19:29:16,208 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 19:29:16,210 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 19:29:16,210 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 19:29:16,210 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 19:29:16,210 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 19:29:16,211 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 19:29:16,211 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 19:29:16,211 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 19:29:16,211 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 19:29:16,211 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 19:29:16,212 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 19:29:16,212 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 19:29:16,212 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 19:29:16,212 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 19:29:16,213 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 19:29:16,213 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 19:29:16,213 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 19:29:16,213 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 19:29:16,214 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 19:29:16,214 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 19:29:16,214 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 19:29:16,214 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 19:29:16,672 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 19:29:16,737 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 19:29:16,742 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 19:29:16,744 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 19:29:16,745 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 19:29:16,746 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product32.cil.c [2021-02-21 19:29:16,850 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc3d8b0fb/db4cc1e081094068bafa30dd19fbe03b/FLAG02dd01241 [2021-02-21 19:29:17,708 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 19:29:17,712 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product32.cil.c [2021-02-21 19:29:17,740 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc3d8b0fb/db4cc1e081094068bafa30dd19fbe03b/FLAG02dd01241 [2021-02-21 19:29:17,983 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc3d8b0fb/db4cc1e081094068bafa30dd19fbe03b [2021-02-21 19:29:17,987 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 19:29:18,008 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 19:29:18,012 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 19:29:18,013 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 19:29:18,018 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 19:29:18,019 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 07:29:17" (1/1) ... [2021-02-21 19:29:18,021 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d365369 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:29:18, skipping insertion in model container [2021-02-21 19:29:18,021 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 07:29:17" (1/1) ... [2021-02-21 19:29:18,031 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 19:29:18,130 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 19:29:18,451 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_product32.cil.c[2243,2256] [2021-02-21 19:29:18,659 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 19:29:18,674 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 19:29:18,695 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_product32.cil.c[2243,2256] [2021-02-21 19:29:18,761 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 19:29:18,836 INFO L208 MainTranslator]: Completed translation [2021-02-21 19:29:18,837 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:29:18 WrapperNode [2021-02-21 19:29:18,837 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 19:29:18,838 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 19:29:18,839 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 19:29:18,839 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 19:29:18,853 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:29:18" (1/1) ... [2021-02-21 19:29:18,853 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:29:18" (1/1) ... [2021-02-21 19:29:18,872 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:29:18" (1/1) ... [2021-02-21 19:29:18,873 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:29:18" (1/1) ... [2021-02-21 19:29:18,908 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:29:18" (1/1) ... [2021-02-21 19:29:18,920 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:29:18" (1/1) ... [2021-02-21 19:29:18,926 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:29:18" (1/1) ... [2021-02-21 19:29:18,937 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 19:29:18,942 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 19:29:18,942 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 19:29:18,942 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 19:29:18,944 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:29:18" (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 19:29:19,069 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 19:29:19,069 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 19:29:19,069 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-21 19:29:19,069 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 19:29:19,070 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2021-02-21 19:29:19,070 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-21 19:29:19,070 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-21 19:29:19,070 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-21 19:29:19,070 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-21 19:29:19,071 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-21 19:29:19,072 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-21 19:29:19,072 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-21 19:29:19,072 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-21 19:29:19,073 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-21 19:29:19,073 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 19:29:19,073 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-21 19:29:19,074 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-21 19:29:19,074 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-21 19:29:19,075 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-21 19:29:19,075 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-21 19:29:19,077 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-21 19:29:19,078 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2021-02-21 19:29:19,078 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-21 19:29:19,078 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-21 19:29:19,078 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-21 19:29:19,078 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-21 19:29:19,079 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-21 19:29:19,079 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-21 19:29:19,079 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-21 19:29:19,079 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-02-21 19:29:19,079 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2021-02-21 19:29:19,079 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-21 19:29:19,079 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2021-02-21 19:29:19,080 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-21 19:29:19,080 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-21 19:29:19,080 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-21 19:29:19,080 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-21 19:29:19,080 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-21 19:29:19,080 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2021-02-21 19:29:19,081 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2021-02-21 19:29:19,081 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2021-02-21 19:29:19,081 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-21 19:29:19,081 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 19:29:19,081 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 19:29:19,081 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 19:29:19,082 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 19:29:19,082 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-21 19:29:19,082 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-21 19:29:19,082 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-21 19:29:19,082 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-21 19:29:19,082 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-21 19:29:19,083 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2021-02-21 19:29:19,083 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-21 19:29:19,083 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-21 19:29:19,083 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-21 19:29:19,083 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-21 19:29:19,083 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-21 19:29:19,083 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-21 19:29:19,084 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-21 19:29:19,084 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-21 19:29:19,084 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-21 19:29:19,084 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-21 19:29:19,084 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-21 19:29:19,084 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-21 19:29:19,085 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-21 19:29:19,085 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 19:29:19,085 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-21 19:29:19,085 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-21 19:29:19,085 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-21 19:29:19,086 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2021-02-21 19:29:19,086 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-21 19:29:19,087 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-21 19:29:19,087 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-21 19:29:19,087 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-21 19:29:19,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-21 19:29:19,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 19:29:19,088 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-21 19:29:19,088 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-21 19:29:19,089 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 19:29:19,089 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-21 19:29:19,089 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-21 19:29:19,089 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 19:29:19,089 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-21 19:29:19,089 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-21 19:29:19,091 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-21 19:29:19,091 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-21 19:29:19,092 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-21 19:29:19,092 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2021-02-21 19:29:19,092 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2021-02-21 19:29:19,092 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-21 19:29:19,092 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-02-21 19:29:19,093 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2021-02-21 19:29:19,093 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2021-02-21 19:29:19,093 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-21 19:29:19,094 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2021-02-21 19:29:19,094 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 19:29:19,094 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 19:29:19,094 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 19:29:20,311 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 19:29:20,311 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-21 19:29:20,315 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 07:29:20 BoogieIcfgContainer [2021-02-21 19:29:20,315 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 19:29:20,317 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 19:29:20,317 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 19:29:20,322 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 19:29:20,322 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 07:29:17" (1/3) ... [2021-02-21 19:29:20,323 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43650280 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 07:29:20, skipping insertion in model container [2021-02-21 19:29:20,324 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:29:18" (2/3) ... [2021-02-21 19:29:20,324 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43650280 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 07:29:20, skipping insertion in model container [2021-02-21 19:29:20,324 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 07:29:20" (3/3) ... [2021-02-21 19:29:20,326 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product32.cil.c [2021-02-21 19:29:20,336 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 19:29:20,344 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 19:29:20,368 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 19:29:20,399 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 19:29:20,399 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 19:29:20,399 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 19:29:20,399 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 19:29:20,400 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 19:29:20,400 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 19:29:20,400 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 19:29:20,400 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 19:29:20,427 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states. [2021-02-21 19:29:20,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-02-21 19:29:20,450 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:29:20,451 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 19:29:20,452 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:29:20,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:29:20,460 INFO L82 PathProgramCache]: Analyzing trace with hash 1366188263, now seen corresponding path program 1 times [2021-02-21 19:29:20,471 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:29:20,472 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [850277029] [2021-02-21 19:29:20,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:29:20,561 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:29:20,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:21,160 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:21,162 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:21,163 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:21,164 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:21,470 WARN L202 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:29:21,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:29:21,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:21,606 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:21,607 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:21,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:29:21,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:21,637 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:21,640 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:21,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:29:21,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:21,648 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:21,650 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:21,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:29:21,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:21,676 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:21,678 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:21,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:29:21,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:21,688 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:21,691 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:21,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-21 19:29:21,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:21,700 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:21,703 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:21,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-21 19:29:21,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:21,713 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:21,715 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:21,794 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 19:29:21,796 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [850277029] [2021-02-21 19:29:21,800 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:29:21,800 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-21 19:29:21,801 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761171486] [2021-02-21 19:29:21,809 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-21 19:29:21,809 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:29:21,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-21 19:29:21,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 19:29:21,831 INFO L87 Difference]: Start difference. First operand 326 states. Second operand 3 states. [2021-02-21 19:29:23,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:29:23,701 INFO L93 Difference]: Finished difference Result 494 states and 589 transitions. [2021-02-21 19:29:23,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-21 19:29:23,704 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 147 [2021-02-21 19:29:23,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:29:23,721 INFO L225 Difference]: With dead ends: 494 [2021-02-21 19:29:23,721 INFO L226 Difference]: Without dead ends: 308 [2021-02-21 19:29:23,727 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 19:29:23,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2021-02-21 19:29:23,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 264. [2021-02-21 19:29:23,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 264 states. [2021-02-21 19:29:23,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 287 transitions. [2021-02-21 19:29:23,919 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 287 transitions. Word has length 147 [2021-02-21 19:29:23,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:29:23,921 INFO L480 AbstractCegarLoop]: Abstraction has 264 states and 287 transitions. [2021-02-21 19:29:23,921 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-21 19:29:23,921 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 287 transitions. [2021-02-21 19:29:23,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-02-21 19:29:23,927 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:29:23,927 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 19:29:23,928 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 19:29:23,928 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:29:23,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:29:23,929 INFO L82 PathProgramCache]: Analyzing trace with hash 248192673, now seen corresponding path program 1 times [2021-02-21 19:29:23,929 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:29:23,930 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [237564914] [2021-02-21 19:29:23,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:29:23,935 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:29:23,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:24,067 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:24,068 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:24,069 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:24,069 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:29:24,074 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:24,075 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:24,381 WARN L202 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:29:24,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:29:24,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:24,436 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:24,437 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:24,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:29:24,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:24,447 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:24,448 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:24,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:29:24,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:24,452 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:24,452 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:24,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:29:24,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:24,457 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:24,458 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:24,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:29:24,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:24,462 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:24,462 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:24,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-21 19:29:24,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:24,467 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:24,468 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:24,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-21 19:29:24,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:24,472 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:24,472 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:24,519 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 19:29:24,520 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [237564914] [2021-02-21 19:29:24,520 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:29:24,520 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 19:29:24,520 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418980327] [2021-02-21 19:29:24,522 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 19:29:24,522 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:29:24,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 19:29:24,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 19:29:24,523 INFO L87 Difference]: Start difference. First operand 264 states and 287 transitions. Second operand 4 states. [2021-02-21 19:29:25,295 WARN L202 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 19:29:26,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:29:26,476 INFO L93 Difference]: Finished difference Result 400 states and 451 transitions. [2021-02-21 19:29:26,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-21 19:29:26,477 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2021-02-21 19:29:26,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:29:26,482 INFO L225 Difference]: With dead ends: 400 [2021-02-21 19:29:26,483 INFO L226 Difference]: Without dead ends: 291 [2021-02-21 19:29:26,485 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 19:29:26,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2021-02-21 19:29:26,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 254. [2021-02-21 19:29:26,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2021-02-21 19:29:26,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 274 transitions. [2021-02-21 19:29:26,584 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 274 transitions. Word has length 148 [2021-02-21 19:29:26,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:29:26,585 INFO L480 AbstractCegarLoop]: Abstraction has 254 states and 274 transitions. [2021-02-21 19:29:26,585 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 19:29:26,585 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 274 transitions. [2021-02-21 19:29:26,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-02-21 19:29:26,587 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:29:26,588 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] [2021-02-21 19:29:26,588 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 19:29:26,588 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:29:26,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:29:26,589 INFO L82 PathProgramCache]: Analyzing trace with hash 688010564, now seen corresponding path program 1 times [2021-02-21 19:29:26,589 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:29:26,589 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [546437076] [2021-02-21 19:29:26,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:29:26,594 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:29:26,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:26,691 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:26,691 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:26,692 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:26,692 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:29:26,696 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:26,696 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:29:26,701 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:26,701 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:26,702 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:26,702 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:29:26,708 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:26,709 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:27,091 WARN L202 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:29:27,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:29:27,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:27,142 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:27,143 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:27,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:29:27,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:27,151 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:27,151 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:27,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:29:27,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:27,154 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:27,155 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:27,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:29:27,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:27,166 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:27,166 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:27,176 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:27,177 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 19:29:27,193 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:27,196 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 19:29:27,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:29:27,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:27,214 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:27,215 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:27,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-02-21 19:29:27,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:27,234 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:27,235 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:29:27,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-02-21 19:29:27,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:27,255 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:27,256 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:27,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-02-21 19:29:27,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:27,260 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:27,261 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:27,312 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 19:29:27,313 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [546437076] [2021-02-21 19:29:27,314 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:29:27,314 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-21 19:29:27,314 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587277288] [2021-02-21 19:29:27,315 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-21 19:29:27,315 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:29:27,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-21 19:29:27,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-21 19:29:27,316 INFO L87 Difference]: Start difference. First operand 254 states and 274 transitions. Second operand 10 states. [2021-02-21 19:29:28,056 WARN L202 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:29:28,506 WARN L202 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 19:29:28,889 WARN L202 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-21 19:29:29,280 WARN L202 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:29:29,675 WARN L202 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:29:30,063 WARN L202 SmtUtils]: Spent 365.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:29:31,312 WARN L202 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 19:29:34,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:29:34,169 INFO L93 Difference]: Finished difference Result 687 states and 802 transitions. [2021-02-21 19:29:34,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-02-21 19:29:34,172 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 161 [2021-02-21 19:29:34,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:29:34,181 INFO L225 Difference]: With dead ends: 687 [2021-02-21 19:29:34,181 INFO L226 Difference]: Without dead ends: 548 [2021-02-21 19:29:34,183 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2021-02-21 19:29:34,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2021-02-21 19:29:34,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 453. [2021-02-21 19:29:34,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 453 states. [2021-02-21 19:29:34,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 507 transitions. [2021-02-21 19:29:34,443 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 507 transitions. Word has length 161 [2021-02-21 19:29:34,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:29:34,444 INFO L480 AbstractCegarLoop]: Abstraction has 453 states and 507 transitions. [2021-02-21 19:29:34,444 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-21 19:29:34,444 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 507 transitions. [2021-02-21 19:29:34,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-02-21 19:29:34,448 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:29:34,448 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 19:29:34,448 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 19:29:34,449 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:29:34,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:29:34,449 INFO L82 PathProgramCache]: Analyzing trace with hash -1382836177, now seen corresponding path program 1 times [2021-02-21 19:29:34,450 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:29:34,450 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [441245527] [2021-02-21 19:29:34,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:29:34,454 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:29:34,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:34,553 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:34,554 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:29:34,558 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:34,559 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:29:34,559 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:34,560 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:29:34,564 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:34,565 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:29:34,571 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:34,571 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:29:34,578 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:34,579 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:29:34,580 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:34,580 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:29:34,581 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:34,581 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:29:34,582 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:34,582 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:29:34,590 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:34,591 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:29:34,599 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:34,600 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:34,952 WARN L202 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:29:34,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:29:34,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:35,015 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:35,016 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:35,017 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:35,022 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 19:29:35,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:29:35,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:35,033 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:35,034 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:35,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:29:35,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:35,039 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:35,040 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:35,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:29:35,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:35,050 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:35,051 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:35,052 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:35,053 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 19:29:35,079 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-21 19:29:35,080 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-21 19:29:35,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:29:35,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:35,105 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:35,106 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:35,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-02-21 19:29:35,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:35,129 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:35,130 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:35,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-02-21 19:29:35,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:35,136 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:35,136 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:35,137 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:35,138 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:29:35,155 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:35,156 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:29:35,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-02-21 19:29:35,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:35,176 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:35,177 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:35,271 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 19:29:35,272 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [441245527] [2021-02-21 19:29:35,272 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:29:35,272 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-02-21 19:29:35,273 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908841498] [2021-02-21 19:29:35,274 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-02-21 19:29:35,274 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:29:35,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-02-21 19:29:35,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2021-02-21 19:29:35,276 INFO L87 Difference]: Start difference. First operand 453 states and 507 transitions. Second operand 14 states. [2021-02-21 19:29:36,037 WARN L202 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:29:36,550 WARN L202 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 19:29:36,962 WARN L202 SmtUtils]: Spent 378.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 19:29:37,399 WARN L202 SmtUtils]: Spent 376.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:29:37,810 WARN L202 SmtUtils]: Spent 369.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:29:38,217 WARN L202 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:29:39,067 WARN L202 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 19:29:40,467 WARN L202 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:29:40,946 WARN L202 SmtUtils]: Spent 371.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:29:41,521 WARN L202 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:29:42,045 WARN L202 SmtUtils]: Spent 367.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 19:29:42,526 WARN L202 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:29:42,974 WARN L202 SmtUtils]: Spent 412.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-21 19:29:43,398 WARN L202 SmtUtils]: Spent 376.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 19:29:43,895 WARN L202 SmtUtils]: Spent 409.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:29:44,308 WARN L202 SmtUtils]: Spent 379.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:29:44,886 WARN L202 SmtUtils]: Spent 401.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:29:45,470 WARN L202 SmtUtils]: Spent 375.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-21 19:29:46,014 WARN L202 SmtUtils]: Spent 381.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:29:46,524 WARN L202 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:29:48,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:29:48,976 INFO L93 Difference]: Finished difference Result 1555 states and 1900 transitions. [2021-02-21 19:29:48,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-02-21 19:29:48,977 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 166 [2021-02-21 19:29:48,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:29:48,987 INFO L225 Difference]: With dead ends: 1555 [2021-02-21 19:29:48,987 INFO L226 Difference]: Without dead ends: 1217 [2021-02-21 19:29:48,991 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=252, Invalid=1008, Unknown=0, NotChecked=0, Total=1260 [2021-02-21 19:29:48,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1217 states. [2021-02-21 19:29:49,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1217 to 1070. [2021-02-21 19:29:49,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1070 states. [2021-02-21 19:29:49,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1070 states to 1070 states and 1238 transitions. [2021-02-21 19:29:49,548 INFO L78 Accepts]: Start accepts. Automaton has 1070 states and 1238 transitions. Word has length 166 [2021-02-21 19:29:49,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:29:49,548 INFO L480 AbstractCegarLoop]: Abstraction has 1070 states and 1238 transitions. [2021-02-21 19:29:49,549 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-02-21 19:29:49,549 INFO L276 IsEmpty]: Start isEmpty. Operand 1070 states and 1238 transitions. [2021-02-21 19:29:49,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-02-21 19:29:49,555 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:29:49,555 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 19:29:49,556 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-21 19:29:49,556 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:29:49,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:29:49,557 INFO L82 PathProgramCache]: Analyzing trace with hash 2044417181, now seen corresponding path program 1 times [2021-02-21 19:29:49,557 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:29:49,557 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [855781504] [2021-02-21 19:29:49,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:29:49,561 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:29:49,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:49,659 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:49,660 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:29:49,663 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:49,664 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:29:49,665 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:49,665 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:29:49,666 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:49,667 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:29:49,667 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:49,668 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:29:49,669 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:49,670 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:29:49,671 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:49,671 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:50,024 WARN L202 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:29:50,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:29:50,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:50,083 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:50,084 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:50,085 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:50,085 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:29:50,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:29:50,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:50,095 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:50,096 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:50,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:29:50,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:50,099 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:50,100 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:50,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:29:50,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:50,104 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:50,107 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:50,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:29:50,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:50,112 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:50,112 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:50,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-02-21 19:29:50,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:50,127 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:50,128 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:29:50,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-02-21 19:29:50,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:50,141 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:50,142 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:50,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-02-21 19:29:50,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:50,146 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:50,147 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:50,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-02-21 19:29:50,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:50,149 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:50,150 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:50,196 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 19:29:50,196 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [855781504] [2021-02-21 19:29:50,197 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:29:50,197 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-21 19:29:50,197 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628889860] [2021-02-21 19:29:50,198 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-21 19:29:50,198 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:29:50,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-21 19:29:50,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-21 19:29:50,199 INFO L87 Difference]: Start difference. First operand 1070 states and 1238 transitions. Second operand 6 states. [2021-02-21 19:29:50,854 WARN L202 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:29:52,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:29:52,154 INFO L93 Difference]: Finished difference Result 1743 states and 2102 transitions. [2021-02-21 19:29:52,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-21 19:29:52,154 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 171 [2021-02-21 19:29:52,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:29:52,161 INFO L225 Difference]: With dead ends: 1743 [2021-02-21 19:29:52,161 INFO L226 Difference]: Without dead ends: 788 [2021-02-21 19:29:52,166 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-02-21 19:29:52,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 788 states. [2021-02-21 19:29:52,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 788 to 685. [2021-02-21 19:29:52,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 685 states. [2021-02-21 19:29:52,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 685 states to 685 states and 744 transitions. [2021-02-21 19:29:52,489 INFO L78 Accepts]: Start accepts. Automaton has 685 states and 744 transitions. Word has length 171 [2021-02-21 19:29:52,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:29:52,490 INFO L480 AbstractCegarLoop]: Abstraction has 685 states and 744 transitions. [2021-02-21 19:29:52,490 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-21 19:29:52,490 INFO L276 IsEmpty]: Start isEmpty. Operand 685 states and 744 transitions. [2021-02-21 19:29:52,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2021-02-21 19:29:52,495 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:29:52,495 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:29:52,496 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-21 19:29:52,496 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:29:52,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:29:52,497 INFO L82 PathProgramCache]: Analyzing trace with hash -1240622476, now seen corresponding path program 1 times [2021-02-21 19:29:52,497 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:29:52,497 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [890292620] [2021-02-21 19:29:52,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY