/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product32.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 16:55:50,578 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 16:55:50,581 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 16:55:50,620 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-23 16:55:50,621 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-23 16:55:50,626 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-23 16:55:50,629 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-23 16:55:50,636 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-23 16:55:50,638 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-23 16:55:50,639 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-23 16:55:50,641 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-23 16:55:50,642 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-23 16:55:50,643 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 16:55:50,644 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 16:55:50,645 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 16:55:50,666 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 16:55:50,666 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 16:55:50,667 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 16:55:50,671 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 16:55:50,678 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 16:55:50,682 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 16:55:50,683 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 16:55:50,685 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 16:55:50,686 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 16:55:50,692 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-23 16:55:50,697 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-23 16:55:50,697 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-23 16:55:50,699 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-23 16:55:50,701 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-23 16:55:50,702 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-23 16:55:50,703 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-23 16:55:50,704 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-23 16:55:50,705 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-23 16:55:50,706 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-23 16:55:50,708 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-23 16:55:50,708 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-23 16:55:50,709 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-23 16:55:50,709 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-23 16:55:50,709 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 16:55:50,710 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 16:55:50,712 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 16:55:50,717 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 16:55:50,736 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 16:55:50,736 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 16:55:50,741 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 16:55:50,741 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 16:55:50,742 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 16:55:50,742 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 16:55:50,742 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 16:55:50,742 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 16:55:50,743 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 16:55:50,743 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 16:55:50,744 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 16:55:50,745 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 16:55:50,745 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 16:55:50,745 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 16:55:50,746 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 16:55:50,746 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 16:55:50,747 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 16:55:50,747 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 16:55:50,747 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 16:55:50,747 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 16:55:50,747 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 16:55:50,748 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 16:55:50,748 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 16:55:51,120 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 16:55:51,148 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 16:55:51,152 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 16:55:51,153 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 16:55:51,154 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 16:55:51,155 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product32.cil.c [2021-02-23 16:55:51,231 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a5c11481e/2d44c672cc914786918712c64ed4c6ea/FLAG4178b9a0e [2021-02-23 16:55:52,016 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 16:55:52,017 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product32.cil.c [2021-02-23 16:55:52,032 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a5c11481e/2d44c672cc914786918712c64ed4c6ea/FLAG4178b9a0e [2021-02-23 16:55:52,270 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a5c11481e/2d44c672cc914786918712c64ed4c6ea [2021-02-23 16:55:52,273 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 16:55:52,288 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 16:55:52,290 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 16:55:52,290 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 16:55:52,294 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 16:55:52,295 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 04:55:52" (1/1) ... [2021-02-23 16:55:52,296 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48c2c63c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:55:52, skipping insertion in model container [2021-02-23 16:55:52,296 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 04:55:52" (1/1) ... [2021-02-23 16:55:52,305 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 16:55:52,347 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 16:55:52,525 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product32.cil.c[2243,2256] [2021-02-23 16:55:52,692 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 16:55:52,704 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 16:55:52,736 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product32.cil.c[2243,2256] [2021-02-23 16:55:52,865 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 16:55:52,912 INFO L208 MainTranslator]: Completed translation [2021-02-23 16:55:52,913 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:55:52 WrapperNode [2021-02-23 16:55:52,913 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 16:55:52,914 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 16:55:52,914 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 16:55:52,915 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 16:55:52,926 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:55:52" (1/1) ... [2021-02-23 16:55:52,926 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:55:52" (1/1) ... [2021-02-23 16:55:52,965 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:55:52" (1/1) ... [2021-02-23 16:55:52,965 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:55:52" (1/1) ... [2021-02-23 16:55:52,996 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:55:52" (1/1) ... [2021-02-23 16:55:53,006 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:55:52" (1/1) ... [2021-02-23 16:55:53,012 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:55:52" (1/1) ... [2021-02-23 16:55:53,021 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 16:55:53,022 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 16:55:53,022 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 16:55:53,022 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 16:55:53,023 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:55:52" (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 16:55:53,122 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 16:55:53,122 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 16:55:53,122 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-23 16:55:53,123 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 16:55:53,123 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2021-02-23 16:55:53,123 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-23 16:55:53,123 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-23 16:55:53,123 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-23 16:55:53,124 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-23 16:55:53,124 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-23 16:55:53,124 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-23 16:55:53,124 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-23 16:55:53,124 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-23 16:55:53,124 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-23 16:55:53,125 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 16:55:53,125 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-23 16:55:53,125 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-23 16:55:53,125 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-23 16:55:53,125 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-23 16:55:53,126 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-23 16:55:53,126 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-23 16:55:53,126 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2021-02-23 16:55:53,126 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-23 16:55:53,126 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-23 16:55:53,126 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-23 16:55:53,127 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-23 16:55:53,127 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-23 16:55:53,127 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-23 16:55:53,127 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-23 16:55:53,127 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-02-23 16:55:53,127 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2021-02-23 16:55:53,128 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-23 16:55:53,128 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2021-02-23 16:55:53,128 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-23 16:55:53,128 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-23 16:55:53,128 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-23 16:55:53,128 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-23 16:55:53,129 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-23 16:55:53,129 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2021-02-23 16:55:53,129 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2021-02-23 16:55:53,129 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2021-02-23 16:55:53,129 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-23 16:55:53,129 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 16:55:53,130 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 16:55:53,130 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 16:55:53,130 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 16:55:53,130 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 16:55:53,130 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-23 16:55:53,130 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-23 16:55:53,130 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-23 16:55:53,131 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-23 16:55:53,131 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2021-02-23 16:55:53,131 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-23 16:55:53,131 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-23 16:55:53,131 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-23 16:55:53,131 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-23 16:55:53,131 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-23 16:55:53,132 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-23 16:55:53,132 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-23 16:55:53,132 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-23 16:55:53,132 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-23 16:55:53,132 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-23 16:55:53,132 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-23 16:55:53,132 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-23 16:55:53,133 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-23 16:55:53,133 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 16:55:53,133 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-23 16:55:53,133 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-23 16:55:53,133 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-23 16:55:53,133 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2021-02-23 16:55:53,134 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-23 16:55:53,134 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-23 16:55:53,134 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-23 16:55:53,134 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-23 16:55:53,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-23 16:55:53,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 16:55:53,135 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-23 16:55:53,135 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-23 16:55:53,135 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 16:55:53,135 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-23 16:55:53,135 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-23 16:55:53,135 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 16:55:53,136 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-23 16:55:53,136 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-23 16:55:53,136 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-23 16:55:53,136 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-23 16:55:53,136 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-23 16:55:53,136 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2021-02-23 16:55:53,137 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2021-02-23 16:55:53,137 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-23 16:55:53,137 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-02-23 16:55:53,137 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2021-02-23 16:55:53,137 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2021-02-23 16:55:53,137 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-23 16:55:53,137 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2021-02-23 16:55:53,138 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 16:55:53,138 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 16:55:53,138 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 16:55:54,240 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 16:55:54,240 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-23 16:55:54,243 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 04:55:54 BoogieIcfgContainer [2021-02-23 16:55:54,244 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 16:55:54,246 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 16:55:54,246 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 16:55:54,250 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 16:55:54,250 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 04:55:52" (1/3) ... [2021-02-23 16:55:54,251 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fdb570c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 04:55:54, skipping insertion in model container [2021-02-23 16:55:54,251 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:55:52" (2/3) ... [2021-02-23 16:55:54,252 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fdb570c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 04:55:54, skipping insertion in model container [2021-02-23 16:55:54,252 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 04:55:54" (3/3) ... [2021-02-23 16:55:54,254 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product32.cil.c [2021-02-23 16:55:54,262 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 16:55:54,268 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 16:55:54,289 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 16:55:54,316 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 16:55:54,316 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 16:55:54,316 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-23 16:55:54,316 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 16:55:54,317 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 16:55:54,317 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 16:55:54,317 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 16:55:54,317 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 16:55:54,362 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states. [2021-02-23 16:55:54,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-02-23 16:55:54,384 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:55:54,385 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 16:55:54,386 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:55:54,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:55:54,395 INFO L82 PathProgramCache]: Analyzing trace with hash 1366188263, now seen corresponding path program 1 times [2021-02-23 16:55:54,407 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:55:54,408 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1208522959] [2021-02-23 16:55:54,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:55:54,493 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:55:54,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:55:54,853 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:55:54,854 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:55:54,855 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:55:54,856 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:55:55,153 WARN L202 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:55:55,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:55:55,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:55:55,230 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:55:55,230 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:55:55,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:55:55,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:55:55,253 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:55:55,253 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:55:55,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:55:55,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:55:55,257 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:55:55,258 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:55:55,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:55:55,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:55:55,262 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:55:55,263 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:55:55,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:55:55,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:55:55,266 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:55:55,267 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:55:55,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-23 16:55:55,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:55:55,270 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:55:55,271 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:55:55,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-23 16:55:55,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:55:55,274 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:55:55,275 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:55:55,310 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 16:55:55,312 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1208522959] [2021-02-23 16:55:55,314 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:55:55,314 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-23 16:55:55,315 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829576112] [2021-02-23 16:55:55,320 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-23 16:55:55,320 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:55:55,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-23 16:55:55,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 16:55:55,337 INFO L87 Difference]: Start difference. First operand 326 states. Second operand 3 states. [2021-02-23 16:55:57,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:55:57,059 INFO L93 Difference]: Finished difference Result 494 states and 589 transitions. [2021-02-23 16:55:57,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-23 16:55:57,061 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 147 [2021-02-23 16:55:57,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:55:57,078 INFO L225 Difference]: With dead ends: 494 [2021-02-23 16:55:57,079 INFO L226 Difference]: Without dead ends: 308 [2021-02-23 16:55:57,084 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 16:55:57,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2021-02-23 16:55:57,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 264. [2021-02-23 16:55:57,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 264 states. [2021-02-23 16:55:57,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 287 transitions. [2021-02-23 16:55:57,265 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 287 transitions. Word has length 147 [2021-02-23 16:55:57,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:55:57,268 INFO L480 AbstractCegarLoop]: Abstraction has 264 states and 287 transitions. [2021-02-23 16:55:57,268 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-23 16:55:57,268 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 287 transitions. [2021-02-23 16:55:57,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-02-23 16:55:57,285 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:55:57,286 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 16:55:57,286 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 16:55:57,286 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:55:57,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:55:57,289 INFO L82 PathProgramCache]: Analyzing trace with hash 248192673, now seen corresponding path program 1 times [2021-02-23 16:55:57,290 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:55:57,291 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1411245279] [2021-02-23 16:55:57,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:55:57,300 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:55:57,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:55:57,460 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:55:57,461 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:55:57,462 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:55:57,462 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:55:57,467 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:55:57,468 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:55:57,790 WARN L202 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:55:57,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:55:57,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:55:57,835 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:55:57,836 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:55:57,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:55:57,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:55:57,844 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:55:57,845 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:55:57,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:55:57,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:55:57,852 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:55:57,853 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:55:57,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:55:57,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:55:57,860 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:55:57,860 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:55:57,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:55:57,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:55:57,863 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:55:57,863 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:55:57,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-23 16:55:57,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:55:57,867 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:55:57,867 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:55:57,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-23 16:55:57,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:55:57,870 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:55:57,872 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:55:57,901 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 16:55:57,902 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1411245279] [2021-02-23 16:55:57,902 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:55:57,902 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 16:55:57,903 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287629160] [2021-02-23 16:55:57,904 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 16:55:57,904 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:55:57,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 16:55:57,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 16:55:57,905 INFO L87 Difference]: Start difference. First operand 264 states and 287 transitions. Second operand 4 states. [2021-02-23 16:55:58,634 WARN L202 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:55:59,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:55:59,755 INFO L93 Difference]: Finished difference Result 400 states and 451 transitions. [2021-02-23 16:55:59,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-23 16:55:59,756 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2021-02-23 16:55:59,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:55:59,768 INFO L225 Difference]: With dead ends: 400 [2021-02-23 16:55:59,768 INFO L226 Difference]: Without dead ends: 291 [2021-02-23 16:55:59,773 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 16:55:59,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2021-02-23 16:55:59,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 254. [2021-02-23 16:55:59,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2021-02-23 16:55:59,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 274 transitions. [2021-02-23 16:55:59,896 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 274 transitions. Word has length 148 [2021-02-23 16:55:59,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:55:59,897 INFO L480 AbstractCegarLoop]: Abstraction has 254 states and 274 transitions. [2021-02-23 16:55:59,897 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 16:55:59,897 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 274 transitions. [2021-02-23 16:55:59,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-02-23 16:55:59,900 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:55:59,900 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 16:55:59,900 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 16:55:59,900 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:55:59,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:55:59,901 INFO L82 PathProgramCache]: Analyzing trace with hash 688010564, now seen corresponding path program 1 times [2021-02-23 16:55:59,901 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:55:59,902 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2110377924] [2021-02-23 16:55:59,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:55:59,906 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:55:59,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:55:59,984 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:55:59,985 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:55:59,986 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:55:59,986 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:55:59,990 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:55:59,990 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:55:59,994 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:55:59,995 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:55:59,996 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:55:59,996 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:56:00,001 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:00,002 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:00,311 WARN L202 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:56:00,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:56:00,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:56:00,350 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:00,350 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:00,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:56:00,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:56:00,358 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:00,358 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:00,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:56:00,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:56:00,360 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:00,361 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:00,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:56:00,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:56:00,368 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:00,369 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:00,378 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:00,378 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:56:00,393 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:00,394 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:56:00,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:56:00,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:56:00,409 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:00,410 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:00,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-02-23 16:56:00,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:56:00,427 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:00,427 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:56:00,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-02-23 16:56:00,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:56:00,447 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:00,448 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:00,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-02-23 16:56:00,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:56:00,451 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:00,451 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:00,487 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 16:56:00,488 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2110377924] [2021-02-23 16:56:00,488 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:56:00,488 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-23 16:56:00,489 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854386798] [2021-02-23 16:56:00,490 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-23 16:56:00,490 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:56:00,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-23 16:56:00,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-23 16:56:00,492 INFO L87 Difference]: Start difference. First operand 254 states and 274 transitions. Second operand 10 states. [2021-02-23 16:56:01,178 WARN L202 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:56:01,593 WARN L202 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:56:01,971 WARN L202 SmtUtils]: Spent 357.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-23 16:56:02,317 WARN L202 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:56:02,704 WARN L202 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:56:03,089 WARN L202 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:56:04,077 WARN L202 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:56:06,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:56:06,539 INFO L93 Difference]: Finished difference Result 687 states and 802 transitions. [2021-02-23 16:56:06,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-02-23 16:56:06,546 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 161 [2021-02-23 16:56:06,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:56:06,557 INFO L225 Difference]: With dead ends: 687 [2021-02-23 16:56:06,558 INFO L226 Difference]: Without dead ends: 548 [2021-02-23 16:56:06,560 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2021-02-23 16:56:06,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2021-02-23 16:56:06,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 453. [2021-02-23 16:56:06,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 453 states. [2021-02-23 16:56:06,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 507 transitions. [2021-02-23 16:56:06,816 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 507 transitions. Word has length 161 [2021-02-23 16:56:06,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:56:06,817 INFO L480 AbstractCegarLoop]: Abstraction has 453 states and 507 transitions. [2021-02-23 16:56:06,817 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-23 16:56:06,817 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 507 transitions. [2021-02-23 16:56:06,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-02-23 16:56:06,820 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:56:06,821 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 16:56:06,821 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 16:56:06,821 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:56:06,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:56:06,822 INFO L82 PathProgramCache]: Analyzing trace with hash -1382836177, now seen corresponding path program 1 times [2021-02-23 16:56:06,822 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:56:06,822 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1542256234] [2021-02-23 16:56:06,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:56:06,826 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:56:06,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:56:06,901 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:06,901 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:56:06,905 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:06,905 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:56:06,906 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:06,906 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:56:06,910 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:06,911 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:56:06,915 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:06,916 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:56:06,921 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:06,922 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:56:06,923 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:06,923 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:56:06,924 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:06,924 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:56:06,925 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:06,925 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:56:06,936 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:06,937 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:56:06,944 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:06,945 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:07,261 WARN L202 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:56:07,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:56:07,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:56:07,381 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:07,381 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:07,382 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:07,388 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 16:56:07,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:56:07,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:56:07,400 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:07,400 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:07,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:56:07,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:56:07,405 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:07,405 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:07,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:56:07,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:56:07,419 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:07,420 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:07,421 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:07,422 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:56:07,444 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-23 16:56:07,445 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-23 16:56:07,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:56:07,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:56:07,467 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:07,469 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:07,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-02-23 16:56:07,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:56:07,490 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:07,493 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:07,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-02-23 16:56:07,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:56:07,498 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:07,499 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:07,499 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:07,500 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:56:07,515 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:07,516 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:56:07,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-02-23 16:56:07,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:56:07,535 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:07,536 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:07,597 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 16:56:07,598 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1542256234] [2021-02-23 16:56:07,598 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:56:07,598 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-02-23 16:56:07,599 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50515983] [2021-02-23 16:56:07,599 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-02-23 16:56:07,600 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:56:07,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-02-23 16:56:07,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2021-02-23 16:56:07,605 INFO L87 Difference]: Start difference. First operand 453 states and 507 transitions. Second operand 14 states. [2021-02-23 16:56:08,236 WARN L202 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:56:08,706 WARN L202 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:56:09,093 WARN L202 SmtUtils]: Spent 357.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 16:56:09,476 WARN L202 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:56:09,835 WARN L202 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:56:10,184 WARN L202 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:56:10,929 WARN L202 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:56:12,251 WARN L202 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:56:12,680 WARN L202 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:56:13,164 WARN L202 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:56:13,635 WARN L202 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:56:14,054 WARN L202 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:56:14,421 WARN L202 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-23 16:56:14,815 WARN L202 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 16:56:15,259 WARN L202 SmtUtils]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:56:15,618 WARN L202 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:56:16,098 WARN L202 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:56:16,645 WARN L202 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-23 16:56:17,105 WARN L202 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:56:17,568 WARN L202 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:56:19,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:56:19,739 INFO L93 Difference]: Finished difference Result 1555 states and 1900 transitions. [2021-02-23 16:56:19,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-02-23 16:56:19,740 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 166 [2021-02-23 16:56:19,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:56:19,748 INFO L225 Difference]: With dead ends: 1555 [2021-02-23 16:56:19,748 INFO L226 Difference]: Without dead ends: 1217 [2021-02-23 16:56:19,751 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=252, Invalid=1008, Unknown=0, NotChecked=0, Total=1260 [2021-02-23 16:56:19,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1217 states. [2021-02-23 16:56:20,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1217 to 1070. [2021-02-23 16:56:20,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1070 states. [2021-02-23 16:56:20,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1070 states to 1070 states and 1238 transitions. [2021-02-23 16:56:20,228 INFO L78 Accepts]: Start accepts. Automaton has 1070 states and 1238 transitions. Word has length 166 [2021-02-23 16:56:20,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:56:20,229 INFO L480 AbstractCegarLoop]: Abstraction has 1070 states and 1238 transitions. [2021-02-23 16:56:20,229 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-02-23 16:56:20,229 INFO L276 IsEmpty]: Start isEmpty. Operand 1070 states and 1238 transitions. [2021-02-23 16:56:20,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-02-23 16:56:20,234 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:56:20,234 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 16:56:20,234 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-23 16:56:20,235 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:56:20,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:56:20,235 INFO L82 PathProgramCache]: Analyzing trace with hash 2044417181, now seen corresponding path program 1 times [2021-02-23 16:56:20,235 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:56:20,236 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [883865208] [2021-02-23 16:56:20,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:56:20,238 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:56:20,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:56:20,304 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:20,305 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:56:20,309 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:20,309 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:56:20,310 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:20,310 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:56:20,310 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:20,311 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:56:20,314 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:20,318 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:56:20,319 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:20,319 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:56:20,320 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:20,320 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:20,628 WARN L202 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:56:20,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:56:20,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:56:20,671 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:20,672 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:20,673 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:20,673 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:56:20,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:56:20,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:56:20,681 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:20,681 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:20,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:56:20,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:56:20,683 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:20,684 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:20,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:56:20,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:56:20,688 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:20,689 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:20,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:56:20,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:56:20,693 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:20,693 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:20,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-02-23 16:56:20,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:56:20,706 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:20,706 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:56:20,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-02-23 16:56:20,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:56:20,718 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:20,719 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:20,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-02-23 16:56:20,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:56:20,722 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:20,723 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:20,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-02-23 16:56:20,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:56:20,727 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:20,727 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:20,766 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 16:56:20,769 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [883865208] [2021-02-23 16:56:20,770 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:56:20,770 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-23 16:56:20,770 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494084451] [2021-02-23 16:56:20,771 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-23 16:56:20,771 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:56:20,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-23 16:56:20,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-23 16:56:20,772 INFO L87 Difference]: Start difference. First operand 1070 states and 1238 transitions. Second operand 6 states. [2021-02-23 16:56:21,325 WARN L202 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:56:22,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:56:22,461 INFO L93 Difference]: Finished difference Result 1743 states and 2102 transitions. [2021-02-23 16:56:22,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-23 16:56:22,464 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 171 [2021-02-23 16:56:22,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:56:22,469 INFO L225 Difference]: With dead ends: 1743 [2021-02-23 16:56:22,470 INFO L226 Difference]: Without dead ends: 788 [2021-02-23 16:56:22,474 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 [2021-02-23 16:56:22,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 788 states. [2021-02-23 16:56:22,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 788 to 685. [2021-02-23 16:56:22,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 685 states. [2021-02-23 16:56:22,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 685 states to 685 states and 744 transitions. [2021-02-23 16:56:22,883 INFO L78 Accepts]: Start accepts. Automaton has 685 states and 744 transitions. Word has length 171 [2021-02-23 16:56:22,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:56:22,884 INFO L480 AbstractCegarLoop]: Abstraction has 685 states and 744 transitions. [2021-02-23 16:56:22,884 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-23 16:56:22,884 INFO L276 IsEmpty]: Start isEmpty. Operand 685 states and 744 transitions. [2021-02-23 16:56:22,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2021-02-23 16:56:22,889 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:56:22,890 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 16:56:22,890 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-23 16:56:22,890 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:56:22,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:56:22,891 INFO L82 PathProgramCache]: Analyzing trace with hash -1240622476, now seen corresponding path program 1 times [2021-02-23 16:56:22,891 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:56:22,891 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [555831731] [2021-02-23 16:56:22,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY