/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-36cd7be [2021-02-23 16:58:04,398 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 16:58:04,401 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 16:58:04,442 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-23 16:58:04,442 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-23 16:58:04,445 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-23 16:58:04,447 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-23 16:58:04,449 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-23 16:58:04,452 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-23 16:58:04,454 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-23 16:58:04,455 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-23 16:58:04,457 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-23 16:58:04,458 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 16:58:04,460 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 16:58:04,461 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 16:58:04,463 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 16:58:04,465 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 16:58:04,477 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 16:58:04,480 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 16:58:04,482 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 16:58:04,485 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 16:58:04,487 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 16:58:04,489 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 16:58:04,490 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 16:58:04,494 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-23 16:58:04,494 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-23 16:58:04,495 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-23 16:58:04,497 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-23 16:58:04,498 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-23 16:58:04,499 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-23 16:58:04,499 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-23 16:58:04,500 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-23 16:58:04,501 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-23 16:58:04,502 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-23 16:58:04,504 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-23 16:58:04,505 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-23 16:58:04,506 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-23 16:58:04,506 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-23 16:58:04,506 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 16:58:04,507 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 16:58:04,508 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 16:58:04,510 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-23 16:58:04,524 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 16:58:04,525 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 16:58:04,527 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 16:58:04,527 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 16:58:04,528 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 16:58:04,528 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 16:58:04,528 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 16:58:04,528 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 16:58:04,529 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 16:58:04,529 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 16:58:04,529 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 16:58:04,529 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 16:58:04,530 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 16:58:04,530 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 16:58:04,530 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 16:58:04,531 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 16:58:04,531 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 16:58:04,531 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 16:58:04,532 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 16:58:04,532 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 16:58:04,532 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 16:58:04,532 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 16:58:04,533 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 16:58:04,992 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 16:58:05,025 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 16:58:05,029 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 16:58:05,030 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 16:58:05,031 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 16:58:05,032 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product39.cil.c [2021-02-23 16:58:05,127 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/71540302b/10813c4419b34e1d918c343d802aa3c1/FLAG620bacd22 [2021-02-23 16:58:05,831 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 16:58:05,832 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product39.cil.c [2021-02-23 16:58:05,854 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/71540302b/10813c4419b34e1d918c343d802aa3c1/FLAG620bacd22 [2021-02-23 16:58:06,120 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/71540302b/10813c4419b34e1d918c343d802aa3c1 [2021-02-23 16:58:06,123 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 16:58:06,139 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 16:58:06,141 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 16:58:06,142 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 16:58:06,146 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 16:58:06,148 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 04:58:06" (1/1) ... [2021-02-23 16:58:06,149 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a5f5ddb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:58:06, skipping insertion in model container [2021-02-23 16:58:06,149 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 04:58:06" (1/1) ... [2021-02-23 16:58:06,159 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 16:58:06,205 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 16:58:06,685 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] [2021-02-23 16:58:06,749 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 16:58:06,763 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 16:58:06,848 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] [2021-02-23 16:58:06,860 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 16:58:06,910 INFO L208 MainTranslator]: Completed translation [2021-02-23 16:58:06,911 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:58:06 WrapperNode [2021-02-23 16:58:06,912 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 16:58:06,914 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 16:58:06,914 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 16:58:06,915 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 16:58:06,936 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:58:06" (1/1) ... [2021-02-23 16:58:06,937 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:58:06" (1/1) ... [2021-02-23 16:58:06,989 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:58:06" (1/1) ... [2021-02-23 16:58:06,990 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:58:06" (1/1) ... [2021-02-23 16:58:07,056 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:58:06" (1/1) ... [2021-02-23 16:58:07,067 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:58:06" (1/1) ... [2021-02-23 16:58:07,073 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:58:06" (1/1) ... [2021-02-23 16:58:07,081 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 16:58:07,083 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 16:58:07,083 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 16:58:07,084 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 16:58:07,085 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:58:06" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 16:58:07,218 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 16:58:07,218 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 16:58:07,219 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-23 16:58:07,219 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 16:58:07,219 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-23 16:58:07,219 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-23 16:58:07,219 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-23 16:58:07,220 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-23 16:58:07,220 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-23 16:58:07,221 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-23 16:58:07,223 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-23 16:58:07,223 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-23 16:58:07,223 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-23 16:58:07,224 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-23 16:58:07,225 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-23 16:58:07,225 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-23 16:58:07,226 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-02-23 16:58:07,226 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2021-02-23 16:58:07,227 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-23 16:58:07,227 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-23 16:58:07,230 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-23 16:58:07,231 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-23 16:58:07,231 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-23 16:58:07,231 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-23 16:58:07,231 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2021-02-23 16:58:07,232 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2021-02-23 16:58:07,232 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-23 16:58:07,232 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-23 16:58:07,232 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-23 16:58:07,232 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-23 16:58:07,233 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-23 16:58:07,234 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-23 16:58:07,234 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-23 16:58:07,235 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2021-02-23 16:58:07,235 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-23 16:58:07,236 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-23 16:58:07,236 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-23 16:58:07,236 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-23 16:58:07,236 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 16:58:07,236 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2021-02-23 16:58:07,236 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 16:58:07,237 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 16:58:07,237 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 16:58:07,237 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 16:58:07,237 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 16:58:07,237 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-23 16:58:07,238 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-23 16:58:07,238 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-23 16:58:07,238 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-23 16:58:07,238 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-23 16:58:07,238 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-23 16:58:07,238 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-23 16:58:07,238 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-23 16:58:07,239 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-23 16:58:07,239 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-23 16:58:07,239 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 16:58:07,239 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-23 16:58:07,239 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-23 16:58:07,239 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 16:58:07,239 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-23 16:58:07,240 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-23 16:58:07,240 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 16:58:07,240 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-23 16:58:07,240 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-23 16:58:07,240 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-23 16:58:07,240 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-23 16:58:07,241 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-23 16:58:07,241 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2021-02-23 16:58:07,241 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-23 16:58:07,241 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-23 16:58:07,242 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-23 16:58:07,242 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-23 16:58:07,242 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-23 16:58:07,243 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-23 16:58:07,244 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2021-02-23 16:58:07,244 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-23 16:58:07,244 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-23 16:58:07,244 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-23 16:58:07,246 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-23 16:58:07,246 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2021-02-23 16:58:07,246 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-23 16:58:07,246 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-02-23 16:58:07,247 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2021-02-23 16:58:07,247 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2021-02-23 16:58:07,247 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-23 16:58:07,248 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-23 16:58:07,249 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-23 16:58:07,249 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-23 16:58:07,249 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-23 16:58:07,249 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-23 16:58:07,249 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 16:58:07,250 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 16:58:07,250 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 16:58:07,251 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 16:58:09,208 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 16:58:09,209 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-23 16:58:09,212 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 04:58:09 BoogieIcfgContainer [2021-02-23 16:58:09,213 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 16:58:09,215 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 16:58:09,216 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 16:58:09,220 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 16:58:09,220 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 04:58:06" (1/3) ... [2021-02-23 16:58:09,221 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b53b322 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 04:58:09, skipping insertion in model container [2021-02-23 16:58:09,222 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:58:06" (2/3) ... [2021-02-23 16:58:09,222 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b53b322 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 04:58:09, skipping insertion in model container [2021-02-23 16:58:09,222 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 04:58:09" (3/3) ... [2021-02-23 16:58:09,225 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product39.cil.c [2021-02-23 16:58:09,235 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 16:58:09,242 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 16:58:09,267 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 16:58:09,299 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 16:58:09,300 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 16:58:09,300 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-23 16:58:09,300 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 16:58:09,301 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 16:58:09,301 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 16:58:09,301 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 16:58:09,301 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 16:58:09,331 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states. [2021-02-23 16:58:09,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-02-23 16:58:09,357 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:58:09,358 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] [2021-02-23 16:58:09,359 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:58:09,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:58:09,367 INFO L82 PathProgramCache]: Analyzing trace with hash -250568010, now seen corresponding path program 1 times [2021-02-23 16:58:09,380 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:58:09,380 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1935730840] [2021-02-23 16:58:09,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:58:09,484 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:58:09,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:58:09,915 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:58:09,917 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:58:09,919 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:58:09,919 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:58:10,336 WARN L202 SmtUtils]: Spent 396.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:58:10,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:58:10,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:58:10,526 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:58:10,527 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:58:10,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:58:10,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:58:10,562 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:58:10,564 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:58:10,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:58:10,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:58:10,575 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:58:10,575 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:58:10,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:58:10,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:58:10,592 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:58:10,593 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:58:10,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:58:10,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:58:10,597 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:58:10,598 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:58:10,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-23 16:58:10,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:58:10,603 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:58:10,604 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:58:10,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-23 16:58:10,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:58:10,613 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:58:10,616 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:58:10,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:58:10,664 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1935730840] [2021-02-23 16:58:10,666 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:58:10,667 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-23 16:58:10,667 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695786729] [2021-02-23 16:58:10,677 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-23 16:58:10,677 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:58:10,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-23 16:58:10,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 16:58:10,700 INFO L87 Difference]: Start difference. First operand 318 states. Second operand 3 states. [2021-02-23 16:58:12,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:58:12,828 INFO L93 Difference]: Finished difference Result 497 states and 591 transitions. [2021-02-23 16:58:12,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-23 16:58:12,830 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 147 [2021-02-23 16:58:12,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:58:12,849 INFO L225 Difference]: With dead ends: 497 [2021-02-23 16:58:12,850 INFO L226 Difference]: Without dead ends: 309 [2021-02-23 16:58:12,857 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 16:58:12,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2021-02-23 16:58:13,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 266. [2021-02-23 16:58:13,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2021-02-23 16:58:13,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 289 transitions. [2021-02-23 16:58:13,070 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 289 transitions. Word has length 147 [2021-02-23 16:58:13,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:58:13,071 INFO L480 AbstractCegarLoop]: Abstraction has 266 states and 289 transitions. [2021-02-23 16:58:13,072 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-23 16:58:13,072 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 289 transitions. [2021-02-23 16:58:13,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-02-23 16:58:13,077 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:58:13,077 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] [2021-02-23 16:58:13,077 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 16:58:13,078 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:58:13,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:58:13,078 INFO L82 PathProgramCache]: Analyzing trace with hash 878362011, now seen corresponding path program 1 times [2021-02-23 16:58:13,079 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:58:13,079 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1772620054] [2021-02-23 16:58:13,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:58:13,083 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:58:13,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:58:13,205 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:58:13,206 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:58:13,207 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:58:13,207 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:58:13,212 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:58:13,213 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:58:13,556 WARN L202 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:58:13,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:58:13,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:58:13,607 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:58:13,608 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:58:13,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:58:13,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:58:13,618 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:58:13,618 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:58:13,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:58:13,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:58:13,621 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:58:13,622 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:58:13,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:58:13,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:58:13,626 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:58:13,627 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:58:13,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:58:13,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:58:13,629 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:58:13,630 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:58:13,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-23 16:58:13,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:58:13,634 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:58:13,635 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:58:13,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-23 16:58:13,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:58:13,638 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:58:13,639 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:58:13,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:58:13,670 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1772620054] [2021-02-23 16:58:13,670 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:58:13,670 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 16:58:13,670 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391461152] [2021-02-23 16:58:13,672 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 16:58:13,673 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:58:13,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 16:58:13,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 16:58:13,674 INFO L87 Difference]: Start difference. First operand 266 states and 289 transitions. Second operand 4 states. [2021-02-23 16:58:14,493 WARN L202 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:58:15,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:58:15,816 INFO L93 Difference]: Finished difference Result 407 states and 457 transitions. [2021-02-23 16:58:15,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-23 16:58:15,817 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2021-02-23 16:58:15,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:58:15,832 INFO L225 Difference]: With dead ends: 407 [2021-02-23 16:58:15,832 INFO L226 Difference]: Without dead ends: 292 [2021-02-23 16:58:15,840 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 [2021-02-23 16:58:15,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2021-02-23 16:58:16,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 256. [2021-02-23 16:58:16,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 256 states. [2021-02-23 16:58:16,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 276 transitions. [2021-02-23 16:58:16,045 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 276 transitions. Word has length 148 [2021-02-23 16:58:16,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:58:16,046 INFO L480 AbstractCegarLoop]: Abstraction has 256 states and 276 transitions. [2021-02-23 16:58:16,046 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 16:58:16,046 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 276 transitions. [2021-02-23 16:58:16,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-02-23 16:58:16,049 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:58:16,050 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] [2021-02-23 16:58:16,050 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 16:58:16,050 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:58:16,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:58:16,051 INFO L82 PathProgramCache]: Analyzing trace with hash -2041974236, now seen corresponding path program 1 times [2021-02-23 16:58:16,051 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:58:16,051 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [333574473] [2021-02-23 16:58:16,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:58:16,055 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:58:16,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:58:16,176 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:58:16,176 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:58:16,180 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:58:16,181 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:58:16,182 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:58:16,183 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:58:16,188 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:58:16,188 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:58:16,195 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:58:16,196 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:58:16,203 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:58:16,204 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:58:16,205 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:58:16,207 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:58:16,208 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:58:16,209 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:58:16,639 WARN L202 SmtUtils]: Spent 398.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:58:16,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:58:16,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:58:16,788 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:58:16,790 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:58:16,792 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:58:16,793 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 16:58:16,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:58:16,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:58:16,807 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:58:16,809 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:58:16,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:58:16,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:58:16,813 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:58:16,815 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:58:16,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:58:16,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:58:16,862 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:58:16,867 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:58:16,882 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:58:16,884 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:58:16,923 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-23 16:58:16,925 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-23 16:58:16,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:58:16,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:58:16,950 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:58:16,953 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:58:16,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-23 16:58:16,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:58:16,957 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:58:16,958 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:58:16,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-02-23 16:58:16,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:58:16,966 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:58:16,966 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:58:17,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:58:17,045 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [333574473] [2021-02-23 16:58:17,045 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:58:17,046 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-23 16:58:17,046 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845002888] [2021-02-23 16:58:17,048 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-23 16:58:17,049 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:58:17,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-23 16:58:17,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-23 16:58:17,056 INFO L87 Difference]: Start difference. First operand 256 states and 276 transitions. Second operand 9 states. [2021-02-23 16:58:17,745 WARN L202 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:58:18,234 WARN L202 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:58:18,647 WARN L202 SmtUtils]: Spent 391.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 16:58:19,040 WARN L202 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:58:19,461 WARN L202 SmtUtils]: Spent 383.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:58:19,852 WARN L202 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:58:21,157 WARN L202 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:58:23,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:58:23,949 INFO L93 Difference]: Finished difference Result 669 states and 769 transitions. [2021-02-23 16:58:23,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-23 16:58:23,950 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 157 [2021-02-23 16:58:23,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:58:23,957 INFO L225 Difference]: With dead ends: 669 [2021-02-23 16:58:23,957 INFO L226 Difference]: Without dead ends: 528 [2021-02-23 16:58:23,958 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2021-02-23 16:58:23,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 528 states. [2021-02-23 16:58:24,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 528 to 461. [2021-02-23 16:58:24,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 461 states. [2021-02-23 16:58:24,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 515 transitions. [2021-02-23 16:58:24,228 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 515 transitions. Word has length 157 [2021-02-23 16:58:24,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:58:24,229 INFO L480 AbstractCegarLoop]: Abstraction has 461 states and 515 transitions. [2021-02-23 16:58:24,229 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-23 16:58:24,230 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 515 transitions. [2021-02-23 16:58:24,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-02-23 16:58:24,232 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:58:24,233 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] [2021-02-23 16:58:24,233 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 16:58:24,233 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:58:24,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:58:24,234 INFO L82 PathProgramCache]: Analyzing trace with hash -1484265414, now seen corresponding path program 1 times [2021-02-23 16:58:24,234 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:58:24,234 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1006171120] [2021-02-23 16:58:24,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:58:24,239 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:58:24,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:58:24,326 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:58:24,326 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:58:24,330 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:58:24,330 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:58:24,331 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:58:24,331 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:58:24,336 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:58:24,337 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:58:24,344 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:58:24,346 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:58:24,354 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:58:24,355 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:58:24,356 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:58:24,358 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:58:24,359 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:58:24,359 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:58:24,361 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:58:24,365 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:58:24,371 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:58:24,373 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:58:24,381 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:58:24,381 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:58:24,744 WARN L202 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:58:24,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:58:24,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:58:24,811 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:58:24,812 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:58:24,813 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:58:24,814 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 16:58:24,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:58:24,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:58:24,858 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:58:24,859 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:58:24,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:58:24,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:58:24,863 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:58:24,864 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:58:24,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:58:24,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:58:24,881 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:58:24,883 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:58:24,885 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:58:24,887 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:58:24,909 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-23 16:58:24,910 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-23 16:58:24,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:58:24,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:58:24,936 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:58:24,936 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:58:24,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-02-23 16:58:24,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:58:24,962 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:58:24,962 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:58:24,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-02-23 16:58:24,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:58:24,968 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:58:24,969 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:58:24,971 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:58:24,972 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:58:24,992 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:58:24,994 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:58:25,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-02-23 16:58:25,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:58:25,023 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:58:25,024 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:58:25,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:58:25,116 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1006171120] [2021-02-23 16:58:25,117 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:58:25,117 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-02-23 16:58:25,117 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040402155] [2021-02-23 16:58:25,118 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-02-23 16:58:25,118 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:58:25,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-02-23 16:58:25,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2021-02-23 16:58:25,119 INFO L87 Difference]: Start difference. First operand 461 states and 515 transitions. Second operand 14 states. [2021-02-23 16:58:25,941 WARN L202 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:58:26,472 WARN L202 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:58:26,901 WARN L202 SmtUtils]: Spent 389.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 16:58:27,291 WARN L202 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:58:27,714 WARN L202 SmtUtils]: Spent 377.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:58:28,092 WARN L202 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:58:29,023 WARN L202 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:58:30,761 WARN L202 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:58:31,317 WARN L202 SmtUtils]: Spent 374.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:58:31,934 WARN L202 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:58:32,411 WARN L202 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:58:32,812 WARN L202 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:58:33,215 WARN L202 SmtUtils]: Spent 369.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-23 16:58:33,628 WARN L202 SmtUtils]: Spent 369.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 16:58:34,114 WARN L202 SmtUtils]: Spent 402.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:58:34,540 WARN L202 SmtUtils]: Spent 384.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:58:35,138 WARN L202 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:58:35,696 WARN L202 SmtUtils]: Spent 372.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-23 16:58:36,150 WARN L202 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:58:36,671 WARN L202 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:58:39,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:58:39,168 INFO L93 Difference]: Finished difference Result 1581 states and 1984 transitions. [2021-02-23 16:58:39,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-02-23 16:58:39,169 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 166 [2021-02-23 16:58:39,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:58:39,180 INFO L225 Difference]: With dead ends: 1581 [2021-02-23 16:58:39,181 INFO L226 Difference]: Without dead ends: 1235 [2021-02-23 16:58:39,184 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=252, Invalid=1008, Unknown=0, NotChecked=0, Total=1260 [2021-02-23 16:58:39,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1235 states. [2021-02-23 16:58:39,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1235 to 1100. [2021-02-23 16:58:39,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1100 states. [2021-02-23 16:58:39,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1100 states to 1100 states and 1300 transitions. [2021-02-23 16:58:39,723 INFO L78 Accepts]: Start accepts. Automaton has 1100 states and 1300 transitions. Word has length 166 [2021-02-23 16:58:39,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:58:39,724 INFO L480 AbstractCegarLoop]: Abstraction has 1100 states and 1300 transitions. [2021-02-23 16:58:39,724 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-02-23 16:58:39,724 INFO L276 IsEmpty]: Start isEmpty. Operand 1100 states and 1300 transitions. [2021-02-23 16:58:39,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-02-23 16:58:39,730 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:58:39,730 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] [2021-02-23 16:58:39,730 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-23 16:58:39,730 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:58:39,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:58:39,731 INFO L82 PathProgramCache]: Analyzing trace with hash 1852844756, now seen corresponding path program 1 times [2021-02-23 16:58:39,731 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:58:39,732 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [471178122] [2021-02-23 16:58:39,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:58:39,734 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:58:39,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:58:39,806 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:58:39,807 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:58:39,811 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:58:39,812 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:58:39,812 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:58:39,813 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:58:39,814 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:58:39,821 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:58:39,822 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:58:39,822 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:58:39,823 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:58:39,825 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:58:39,826 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:58:39,826 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:58:40,149 WARN L202 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:58:40,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:58:40,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:58:40,222 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:58:40,223 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:58:40,224 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:58:40,225 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:58:40,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:58:40,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:58:40,235 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:58:40,235 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:58:40,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:58:40,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:58:40,241 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:58:40,242 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:58:40,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:58:40,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:58:40,246 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:58:40,246 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:58:40,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:58:40,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:58:40,251 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:58:40,251 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:58:40,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-02-23 16:58:40,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:58:40,270 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:58:40,271 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:58:40,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-02-23 16:58:40,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:58:40,284 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:58:40,285 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:58:40,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-02-23 16:58:40,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:58:40,294 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:58:40,294 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:58:40,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-02-23 16:58:40,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:58:40,298 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:58:40,299 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:58:40,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:58:40,351 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [471178122] [2021-02-23 16:58:40,351 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:58:40,351 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-23 16:58:40,352 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235867581] [2021-02-23 16:58:40,352 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-23 16:58:40,352 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:58:40,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-23 16:58:40,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-23 16:58:40,355 INFO L87 Difference]: Start difference. First operand 1100 states and 1300 transitions. Second operand 6 states. [2021-02-23 16:58:41,080 WARN L202 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:58:44,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:58:44,397 INFO L93 Difference]: Finished difference Result 2533 states and 3181 transitions. [2021-02-23 16:58:44,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-02-23 16:58:44,398 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 171 [2021-02-23 16:58:44,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:58:44,410 INFO L225 Difference]: With dead ends: 2533 [2021-02-23 16:58:44,410 INFO L226 Difference]: Without dead ends: 1548 [2021-02-23 16:58:44,416 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 [2021-02-23 16:58:44,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1548 states. [2021-02-23 16:58:44,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1548 to 1425. [2021-02-23 16:58:44,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1425 states. [2021-02-23 16:58:44,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1425 states to 1425 states and 1681 transitions. [2021-02-23 16:58:44,993 INFO L78 Accepts]: Start accepts. Automaton has 1425 states and 1681 transitions. Word has length 171 [2021-02-23 16:58:44,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:58:44,994 INFO L480 AbstractCegarLoop]: Abstraction has 1425 states and 1681 transitions. [2021-02-23 16:58:44,994 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-23 16:58:44,994 INFO L276 IsEmpty]: Start isEmpty. Operand 1425 states and 1681 transitions. [2021-02-23 16:58:45,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2021-02-23 16:58:45,000 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:58:45,001 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] [2021-02-23 16:58:45,002 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-23 16:58:45,002 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:58:45,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:58:45,003 INFO L82 PathProgramCache]: Analyzing trace with hash 999941277, now seen corresponding path program 1 times [2021-02-23 16:58:45,003 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:58:45,003 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1951496516] [2021-02-23 16:58:45,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY