/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_product23.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 19:16:27,552 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 19:16:27,555 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 19:16:27,597 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 19:16:27,598 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 19:16:27,603 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 19:16:27,608 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 19:16:27,614 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 19:16:27,620 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 19:16:27,623 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 19:16:27,630 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 19:16:27,632 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 19:16:27,632 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 19:16:27,637 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 19:16:27,638 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 19:16:27,656 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 19:16:27,660 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 19:16:27,662 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 19:16:27,668 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 19:16:27,675 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 19:16:27,681 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 19:16:27,688 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 19:16:27,690 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 19:16:27,692 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 19:16:27,700 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-21 19:16:27,700 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-21 19:16:27,701 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-21 19:16:27,702 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-21 19:16:27,702 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-21 19:16:27,704 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-21 19:16:27,704 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-21 19:16:27,709 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-21 19:16:27,710 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-21 19:16:27,711 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-21 19:16:27,714 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-21 19:16:27,715 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-21 19:16:27,716 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-21 19:16:27,716 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-21 19:16:27,717 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 19:16:27,718 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 19:16:27,718 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 19:16:27,720 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 19:16:27,751 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 19:16:27,752 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 19:16:27,758 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 19:16:27,759 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 19:16:27,759 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 19:16:27,759 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 19:16:27,759 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 19:16:27,760 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 19:16:27,760 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 19:16:27,760 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 19:16:27,762 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 19:16:27,762 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 19:16:27,762 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 19:16:27,763 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 19:16:27,763 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 19:16:27,764 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 19:16:27,764 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 19:16:27,764 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 19:16:27,764 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 19:16:27,765 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 19:16:27,765 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 19:16:27,765 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 19:16:27,765 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 19:16:28,317 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 19:16:28,355 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 19:16:28,358 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 19:16:28,360 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 19:16:28,361 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 19:16:28,363 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product23.cil.c [2021-02-21 19:16:28,452 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ec9525ce/958cb23549ec4000a8725d451c033e49/FLAGd58b0438c [2021-02-21 19:16:29,249 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 19:16:29,250 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product23.cil.c [2021-02-21 19:16:29,277 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ec9525ce/958cb23549ec4000a8725d451c033e49/FLAGd58b0438c [2021-02-21 19:16:29,551 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ec9525ce/958cb23549ec4000a8725d451c033e49 [2021-02-21 19:16:29,556 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 19:16:29,576 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 19:16:29,580 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 19:16:29,580 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 19:16:29,585 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 19:16:29,586 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 07:16:29" (1/1) ... [2021-02-21 19:16:29,589 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23d0143c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:16:29, skipping insertion in model container [2021-02-21 19:16:29,589 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 07:16:29" (1/1) ... [2021-02-21 19:16:29,600 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 19:16:29,668 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 19:16:29,861 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_product23.cil.c[1281,1294] [2021-02-21 19:16:30,092 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 19:16:30,109 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 19:16:30,130 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_product23.cil.c[1281,1294] [2021-02-21 19:16:30,293 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 19:16:30,352 INFO L208 MainTranslator]: Completed translation [2021-02-21 19:16:30,354 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:16:30 WrapperNode [2021-02-21 19:16:30,354 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 19:16:30,358 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 19:16:30,358 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 19:16:30,358 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 19:16:30,380 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:16:30" (1/1) ... [2021-02-21 19:16:30,381 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:16:30" (1/1) ... [2021-02-21 19:16:30,404 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:16:30" (1/1) ... [2021-02-21 19:16:30,405 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:16:30" (1/1) ... [2021-02-21 19:16:30,482 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:16:30" (1/1) ... [2021-02-21 19:16:30,498 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:16:30" (1/1) ... [2021-02-21 19:16:30,508 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:16:30" (1/1) ... [2021-02-21 19:16:30,523 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 19:16:30,554 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 19:16:30,554 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 19:16:30,554 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 19:16:30,555 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:16:30" (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 19:16:30,702 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 19:16:30,703 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 19:16:30,703 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-21 19:16:30,703 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 19:16:30,704 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-21 19:16:30,704 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-21 19:16:30,704 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-21 19:16:30,704 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-21 19:16:30,705 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-21 19:16:30,706 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-21 19:16:30,708 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-21 19:16:30,709 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-21 19:16:30,709 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-21 19:16:30,709 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-21 19:16:30,710 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-21 19:16:30,710 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-21 19:16:30,710 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-21 19:16:30,710 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2021-02-21 19:16:30,711 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-21 19:16:30,712 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-21 19:16:30,715 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-21 19:16:30,716 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-21 19:16:30,716 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-21 19:16:30,716 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-21 19:16:30,716 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-02-21 19:16:30,717 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2021-02-21 19:16:30,717 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-21 19:16:30,717 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-21 19:16:30,717 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-21 19:16:30,717 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-21 19:16:30,718 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-21 19:16:30,718 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-21 19:16:30,719 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2021-02-21 19:16:30,719 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2021-02-21 19:16:30,719 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2021-02-21 19:16:30,719 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-21 19:16:30,719 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-21 19:16:30,720 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-21 19:16:30,720 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-21 19:16:30,720 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 19:16:30,720 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 19:16:30,720 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 19:16:30,721 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 19:16:30,721 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 19:16:30,721 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-21 19:16:30,721 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-21 19:16:30,722 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-21 19:16:30,722 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-21 19:16:30,722 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-21 19:16:30,722 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-21 19:16:30,723 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-21 19:16:30,723 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-21 19:16:30,723 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 19:16:30,723 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-21 19:16:30,724 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-21 19:16:30,724 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 19:16:30,724 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-21 19:16:30,724 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-21 19:16:30,724 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 19:16:30,725 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-21 19:16:30,725 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-21 19:16:30,725 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-21 19:16:30,725 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-21 19:16:30,725 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-21 19:16:30,726 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-21 19:16:30,726 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-21 19:16:30,726 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-21 19:16:30,726 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-21 19:16:30,726 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2021-02-21 19:16:30,726 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-21 19:16:30,727 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-21 19:16:30,727 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-21 19:16:30,728 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-21 19:16:30,728 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2021-02-21 19:16:30,728 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-21 19:16:30,729 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-21 19:16:30,729 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-21 19:16:30,729 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-21 19:16:30,731 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-21 19:16:30,731 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-21 19:16:30,731 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-21 19:16:30,731 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2021-02-21 19:16:30,732 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-21 19:16:30,732 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-02-21 19:16:30,733 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2021-02-21 19:16:30,734 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2021-02-21 19:16:30,734 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-21 19:16:30,734 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-21 19:16:30,734 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-21 19:16:30,735 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-21 19:16:30,735 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 19:16:30,736 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 19:16:30,738 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 19:16:30,738 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 19:16:32,360 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 19:16:32,360 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-21 19:16:32,364 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 07:16:32 BoogieIcfgContainer [2021-02-21 19:16:32,364 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 19:16:32,366 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 19:16:32,366 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 19:16:32,372 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 19:16:32,372 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 07:16:29" (1/3) ... [2021-02-21 19:16:32,373 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32165e5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 07:16:32, skipping insertion in model container [2021-02-21 19:16:32,373 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:16:30" (2/3) ... [2021-02-21 19:16:32,374 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32165e5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 07:16:32, skipping insertion in model container [2021-02-21 19:16:32,374 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 07:16:32" (3/3) ... [2021-02-21 19:16:32,375 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product23.cil.c [2021-02-21 19:16:32,384 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 19:16:32,391 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 19:16:32,418 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 19:16:32,449 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 19:16:32,449 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 19:16:32,449 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 19:16:32,449 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 19:16:32,449 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 19:16:32,450 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 19:16:32,450 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 19:16:32,450 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 19:16:32,479 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states. [2021-02-21 19:16:32,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-02-21 19:16:32,505 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:16:32,506 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 19:16:32,506 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:16:32,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:16:32,514 INFO L82 PathProgramCache]: Analyzing trace with hash 2129419879, now seen corresponding path program 1 times [2021-02-21 19:16:32,527 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:16:32,527 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2010321030] [2021-02-21 19:16:32,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:16:32,635 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:16:32,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:16:33,119 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:33,121 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:16:33,122 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:33,122 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:16:33,593 WARN L202 SmtUtils]: Spent 429.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:16:33,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:16:33,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:16:33,675 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:33,675 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:16:33,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:16:33,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:16:33,698 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:33,699 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:16:33,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:16:33,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:16:33,703 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:33,704 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:16:33,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:16:33,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:16:33,708 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:33,710 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:16:33,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:16:33,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:16:33,718 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:33,719 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:16:33,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-21 19:16:33,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:16:33,724 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:33,727 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:16:33,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-21 19:16:33,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:16:33,736 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:33,738 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:16:33,796 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 19:16:33,799 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2010321030] [2021-02-21 19:16:33,802 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:16:33,803 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-21 19:16:33,804 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602341590] [2021-02-21 19:16:33,813 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-21 19:16:33,814 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:16:33,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-21 19:16:33,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 19:16:33,837 INFO L87 Difference]: Start difference. First operand 312 states. Second operand 3 states. [2021-02-21 19:16:35,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:16:35,836 INFO L93 Difference]: Finished difference Result 485 states and 579 transitions. [2021-02-21 19:16:35,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-21 19:16:35,839 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 147 [2021-02-21 19:16:35,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:16:35,886 INFO L225 Difference]: With dead ends: 485 [2021-02-21 19:16:35,886 INFO L226 Difference]: Without dead ends: 303 [2021-02-21 19:16:35,894 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 [2021-02-21 19:16:35,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2021-02-21 19:16:36,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 260. [2021-02-21 19:16:36,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 260 states. [2021-02-21 19:16:36,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 283 transitions. [2021-02-21 19:16:36,158 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 283 transitions. Word has length 147 [2021-02-21 19:16:36,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:16:36,159 INFO L480 AbstractCegarLoop]: Abstraction has 260 states and 283 transitions. [2021-02-21 19:16:36,159 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-21 19:16:36,159 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 283 transitions. [2021-02-21 19:16:36,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-02-21 19:16:36,165 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:16:36,166 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 19:16:36,166 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 19:16:36,166 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:16:36,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:16:36,167 INFO L82 PathProgramCache]: Analyzing trace with hash -1652418320, now seen corresponding path program 1 times [2021-02-21 19:16:36,168 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:16:36,168 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1278153358] [2021-02-21 19:16:36,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:16:36,173 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:16:36,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:16:36,351 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:36,353 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:16:36,354 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:36,356 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:16:36,362 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:36,364 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:16:36,746 WARN L202 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:16:36,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:16:36,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:16:36,842 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:36,843 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:16:36,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:16:36,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:16:36,857 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:36,858 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:16:36,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:16:36,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:16:36,862 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:36,863 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:16:36,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:16:36,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:16:36,878 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:36,879 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:16:36,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:16:36,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:16:36,884 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:36,885 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:16:36,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-21 19:16:36,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:16:36,888 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:36,889 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:16:36,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-21 19:16:36,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:16:36,893 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:36,894 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:16:36,953 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 19:16:36,954 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1278153358] [2021-02-21 19:16:36,954 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:16:36,954 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 19:16:36,955 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955380318] [2021-02-21 19:16:36,958 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 19:16:36,959 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:16:36,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 19:16:36,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 19:16:36,960 INFO L87 Difference]: Start difference. First operand 260 states and 283 transitions. Second operand 4 states. [2021-02-21 19:16:37,894 WARN L202 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 19:16:39,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:16:39,175 INFO L93 Difference]: Finished difference Result 395 states and 445 transitions. [2021-02-21 19:16:39,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-21 19:16:39,176 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2021-02-21 19:16:39,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:16:39,180 INFO L225 Difference]: With dead ends: 395 [2021-02-21 19:16:39,180 INFO L226 Difference]: Without dead ends: 286 [2021-02-21 19:16:39,182 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-21 19:16:39,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2021-02-21 19:16:39,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 250. [2021-02-21 19:16:39,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2021-02-21 19:16:39,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 270 transitions. [2021-02-21 19:16:39,325 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 270 transitions. Word has length 148 [2021-02-21 19:16:39,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:16:39,327 INFO L480 AbstractCegarLoop]: Abstraction has 250 states and 270 transitions. [2021-02-21 19:16:39,327 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 19:16:39,327 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 270 transitions. [2021-02-21 19:16:39,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-02-21 19:16:39,330 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:16:39,331 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 19:16:39,331 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 19:16:39,331 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:16:39,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:16:39,333 INFO L82 PathProgramCache]: Analyzing trace with hash -1795995809, now seen corresponding path program 1 times [2021-02-21 19:16:39,336 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:16:39,337 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1909450973] [2021-02-21 19:16:39,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:16:39,342 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:16:39,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:16:39,514 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:39,515 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:16:39,520 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:39,521 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:16:39,523 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:39,523 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:16:39,527 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:39,528 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:16:39,533 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:39,534 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:16:39,540 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:39,541 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:16:39,542 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:39,543 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:16:39,543 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:39,544 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:16:39,852 WARN L202 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:16:39,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:16:39,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:16:39,907 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:39,907 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:16:39,908 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:39,909 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 19:16:39,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:16:39,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:16:39,920 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:39,920 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:16:39,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:16:39,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:16:39,923 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:39,924 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:16:39,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:16:39,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:16:39,933 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:39,934 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:16:39,943 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:39,944 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 19:16:39,965 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-21 19:16:39,966 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-21 19:16:39,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:16:39,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:16:39,986 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:39,987 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:16:39,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-21 19:16:39,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:16:39,990 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:39,990 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:16:39,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-02-21 19:16:39,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:16:39,994 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:39,994 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:16:40,054 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 19:16:40,055 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1909450973] [2021-02-21 19:16:40,055 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:16:40,055 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-21 19:16:40,056 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258410354] [2021-02-21 19:16:40,056 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-21 19:16:40,056 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:16:40,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-21 19:16:40,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-21 19:16:40,057 INFO L87 Difference]: Start difference. First operand 250 states and 270 transitions. Second operand 9 states. [2021-02-21 19:16:40,726 WARN L202 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:16:41,218 WARN L202 SmtUtils]: Spent 372.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 19:16:41,623 WARN L202 SmtUtils]: Spent 384.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 19:16:42,031 WARN L202 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:16:42,434 WARN L202 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:16:42,843 WARN L202 SmtUtils]: Spent 385.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:16:44,082 WARN L202 SmtUtils]: Spent 374.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 19:16:46,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:16:46,633 INFO L93 Difference]: Finished difference Result 651 states and 751 transitions. [2021-02-21 19:16:46,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-21 19:16:46,635 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 157 [2021-02-21 19:16:46,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:16:46,641 INFO L225 Difference]: With dead ends: 651 [2021-02-21 19:16:46,641 INFO L226 Difference]: Without dead ends: 516 [2021-02-21 19:16:46,648 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2021-02-21 19:16:46,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2021-02-21 19:16:46,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 449. [2021-02-21 19:16:46,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 449 states. [2021-02-21 19:16:46,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 503 transitions. [2021-02-21 19:16:46,866 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 503 transitions. Word has length 157 [2021-02-21 19:16:46,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:16:46,867 INFO L480 AbstractCegarLoop]: Abstraction has 449 states and 503 transitions. [2021-02-21 19:16:46,867 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-21 19:16:46,867 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 503 transitions. [2021-02-21 19:16:46,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-02-21 19:16:46,870 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:16:46,871 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 19:16:46,871 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 19:16:46,871 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:16:46,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:16:46,872 INFO L82 PathProgramCache]: Analyzing trace with hash -221304311, now seen corresponding path program 1 times [2021-02-21 19:16:46,872 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:16:46,872 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1051498740] [2021-02-21 19:16:46,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:16:46,876 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:16:46,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:16:46,952 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:46,952 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:16:46,955 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:46,956 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:16:46,956 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:46,957 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:16:46,961 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:46,962 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:16:46,967 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:46,968 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:16:46,973 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:46,975 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:16:46,976 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:46,976 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:16:46,977 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:46,977 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:16:46,978 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:46,979 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:16:46,985 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:46,986 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:16:46,993 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:46,994 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:16:47,446 WARN L202 SmtUtils]: Spent 413.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:16:47,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:16:47,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:16:47,517 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:47,518 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:16:47,519 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:47,519 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 19:16:47,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:16:47,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:16:47,532 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:47,533 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:16:47,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:16:47,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:16:47,537 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:47,538 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:16:47,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:16:47,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:16:47,547 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:47,548 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:16:47,549 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:47,551 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 19:16:47,580 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-21 19:16:47,581 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-21 19:16:47,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:16:47,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:16:47,611 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:47,612 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:16:47,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-02-21 19:16:47,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:16:47,644 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:47,645 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:16:47,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-02-21 19:16:47,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:16:47,651 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:47,652 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:16:47,653 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:47,654 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:16:47,677 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:47,679 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:16:47,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-02-21 19:16:47,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:16:47,710 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:47,711 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:16:47,830 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 19:16:47,830 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1051498740] [2021-02-21 19:16:47,830 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:16:47,830 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-02-21 19:16:47,831 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60798000] [2021-02-21 19:16:47,831 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-02-21 19:16:47,831 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:16:47,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-02-21 19:16:47,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2021-02-21 19:16:47,832 INFO L87 Difference]: Start difference. First operand 449 states and 503 transitions. Second operand 14 states. [2021-02-21 19:16:48,736 WARN L202 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:16:49,238 WARN L202 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 19:16:49,610 WARN L202 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 19:16:50,025 WARN L202 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:16:50,424 WARN L202 SmtUtils]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:16:50,776 WARN L202 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:16:51,591 WARN L202 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 19:16:53,057 WARN L202 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:16:53,615 WARN L202 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:16:54,144 WARN L202 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:16:54,577 WARN L202 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 19:16:55,002 WARN L202 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-21 19:16:55,386 WARN L202 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:16:55,803 WARN L202 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 19:16:56,221 WARN L202 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:16:56,608 WARN L202 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:16:57,117 WARN L202 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:16:57,639 WARN L202 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-21 19:16:58,081 WARN L202 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:16:58,548 WARN L202 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:17:00,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:17:00,559 INFO L93 Difference]: Finished difference Result 1535 states and 1876 transitions. [2021-02-21 19:17:00,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-02-21 19:17:00,562 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 166 [2021-02-21 19:17:00,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:17:00,571 INFO L225 Difference]: With dead ends: 1535 [2021-02-21 19:17:00,571 INFO L226 Difference]: Without dead ends: 1201 [2021-02-21 19:17:00,574 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=252, Invalid=1008, Unknown=0, NotChecked=0, Total=1260 [2021-02-21 19:17:00,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1201 states. [2021-02-21 19:17:01,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1201 to 1058. [2021-02-21 19:17:01,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1058 states. [2021-02-21 19:17:01,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1058 states to 1058 states and 1226 transitions. [2021-02-21 19:17:01,016 INFO L78 Accepts]: Start accepts. Automaton has 1058 states and 1226 transitions. Word has length 166 [2021-02-21 19:17:01,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:17:01,017 INFO L480 AbstractCegarLoop]: Abstraction has 1058 states and 1226 transitions. [2021-02-21 19:17:01,017 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-02-21 19:17:01,017 INFO L276 IsEmpty]: Start isEmpty. Operand 1058 states and 1226 transitions. [2021-02-21 19:17:01,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-02-21 19:17:01,042 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:17:01,043 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 19:17:01,043 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-21 19:17:01,043 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:17:01,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:17:01,044 INFO L82 PathProgramCache]: Analyzing trace with hash 1310381005, now seen corresponding path program 1 times [2021-02-21 19:17:01,044 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:17:01,044 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [885289847] [2021-02-21 19:17:01,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:17:01,047 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:17:01,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:17:01,112 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:17:01,113 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:17:01,116 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:17:01,117 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:17:01,117 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:17:01,118 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:17:01,118 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:17:01,119 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:17:01,119 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:17:01,120 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:17:01,120 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:17:01,121 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:17:01,121 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:17:01,122 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:17:01,418 WARN L202 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:17:01,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:17:01,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:17:01,468 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:17:01,469 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:17:01,469 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:17:01,470 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:17:01,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:17:01,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:17:01,477 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:17:01,478 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:17:01,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:17:01,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:17:01,480 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:17:01,481 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:17:01,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:17:01,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:17:01,484 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:17:01,484 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:17:01,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:17:01,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:17:01,487 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:17:01,488 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:17:01,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-02-21 19:17:01,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:17:01,508 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:17:01,509 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:17:01,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-02-21 19:17:01,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:17:01,521 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:17:01,521 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:17:01,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-02-21 19:17:01,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:17:01,524 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:17:01,525 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:17:01,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-02-21 19:17:01,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:17:01,527 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:17:01,528 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:17:01,566 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 19:17:01,566 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [885289847] [2021-02-21 19:17:01,566 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:17:01,567 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-21 19:17:01,567 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066430253] [2021-02-21 19:17:01,567 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-21 19:17:01,568 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:17:01,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-21 19:17:01,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-21 19:17:01,568 INFO L87 Difference]: Start difference. First operand 1058 states and 1226 transitions. Second operand 6 states. [2021-02-21 19:17:02,145 WARN L202 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:17:03,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:17:03,340 INFO L93 Difference]: Finished difference Result 1650 states and 1972 transitions. [2021-02-21 19:17:03,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-21 19:17:03,341 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 171 [2021-02-21 19:17:03,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:17:03,346 INFO L225 Difference]: With dead ends: 1650 [2021-02-21 19:17:03,346 INFO L226 Difference]: Without dead ends: 707 [2021-02-21 19:17:03,350 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-02-21 19:17:03,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 707 states. [2021-02-21 19:17:03,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 707 to 673. [2021-02-21 19:17:03,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 673 states. [2021-02-21 19:17:03,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 673 states to 673 states and 732 transitions. [2021-02-21 19:17:03,678 INFO L78 Accepts]: Start accepts. Automaton has 673 states and 732 transitions. Word has length 171 [2021-02-21 19:17:03,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:17:03,679 INFO L480 AbstractCegarLoop]: Abstraction has 673 states and 732 transitions. [2021-02-21 19:17:03,679 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-21 19:17:03,679 INFO L276 IsEmpty]: Start isEmpty. Operand 673 states and 732 transitions. [2021-02-21 19:17:03,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2021-02-21 19:17:03,695 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:17:03,696 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 19:17:03,696 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-21 19:17:03,696 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:17:03,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:17:03,697 INFO L82 PathProgramCache]: Analyzing trace with hash -2035535700, now seen corresponding path program 1 times [2021-02-21 19:17:03,697 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:17:03,697 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1163143980] [2021-02-21 19:17:03,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY