/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/acceleratedInterpolationWernerOverapprox_32.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product22.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-22 01:02:50,637 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-22 01:02:50,640 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-22 01:02:50,682 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-22 01:02:50,683 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-22 01:02:50,684 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-22 01:02:50,686 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-22 01:02:50,688 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-22 01:02:50,690 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-22 01:02:50,701 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-22 01:02:50,702 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-22 01:02:50,708 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-22 01:02:50,708 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-22 01:02:50,710 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-22 01:02:50,711 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-22 01:02:50,714 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-22 01:02:50,715 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-22 01:02:50,716 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-22 01:02:50,718 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-22 01:02:50,720 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-22 01:02:50,722 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-22 01:02:50,723 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-22 01:02:50,724 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-22 01:02:50,725 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-22 01:02:50,729 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-22 01:02:50,729 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-22 01:02:50,729 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-22 01:02:50,730 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-22 01:02:50,731 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-22 01:02:50,732 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-22 01:02:50,732 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-22 01:02:50,733 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-22 01:02:50,734 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-22 01:02:50,734 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-22 01:02:50,736 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-22 01:02:50,736 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-22 01:02:50,737 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-22 01:02:50,737 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-22 01:02:50,737 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-22 01:02:50,738 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-22 01:02:50,739 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-22 01:02:50,740 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf [2021-02-22 01:02:50,752 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-22 01:02:50,752 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-22 01:02:50,753 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-22 01:02:50,754 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-22 01:02:50,754 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-22 01:02:50,754 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-22 01:02:50,755 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-22 01:02:50,755 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-22 01:02:50,755 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-22 01:02:50,755 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-22 01:02:50,756 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-22 01:02:50,756 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-22 01:02:50,756 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-22 01:02:50,756 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-22 01:02:50,757 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-22 01:02:50,757 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-22 01:02:50,757 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-22 01:02:50,758 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-22 01:02:50,758 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-22 01:02:50,758 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-22 01:02:50,758 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-22 01:02:50,759 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-22 01:02:50,759 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-22 01:02:50,759 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-22 01:02:51,116 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-22 01:02:51,143 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-22 01:02:51,146 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-22 01:02:51,147 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-22 01:02:51,149 INFO L275 PluginConnector]: CDTParser initialized [2021-02-22 01:02:51,150 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product22.cil.c [2021-02-22 01:02:51,228 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b5e3b304/1414d6290adf4897a3b1a77d203a5a12/FLAG018b45b00 [2021-02-22 01:02:51,850 INFO L306 CDTParser]: Found 1 translation units. [2021-02-22 01:02:51,851 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product22.cil.c [2021-02-22 01:02:51,872 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b5e3b304/1414d6290adf4897a3b1a77d203a5a12/FLAG018b45b00 [2021-02-22 01:02:52,168 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b5e3b304/1414d6290adf4897a3b1a77d203a5a12 [2021-02-22 01:02:52,171 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-22 01:02:52,184 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-22 01:02:52,187 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-22 01:02:52,187 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-22 01:02:52,191 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-22 01:02:52,192 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 01:02:52" (1/1) ... [2021-02-22 01:02:52,193 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6bc0c150 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:02:52, skipping insertion in model container [2021-02-22 01:02:52,193 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 01:02:52" (1/1) ... [2021-02-22 01:02:52,201 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-22 01:02:52,269 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-22 01:02:52,447 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_spec3_product22.cil.c[2660,2673] [2021-02-22 01:02:52,561 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 01:02:52,584 INFO L203 MainTranslator]: Completed pre-run [2021-02-22 01:02:52,633 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_spec3_product22.cil.c[2660,2673] [2021-02-22 01:02:52,716 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 01:02:52,765 INFO L208 MainTranslator]: Completed translation [2021-02-22 01:02:52,766 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:02:52 WrapperNode [2021-02-22 01:02:52,766 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-22 01:02:52,768 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-22 01:02:52,768 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-22 01:02:52,768 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-22 01:02:52,787 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:02:52" (1/1) ... [2021-02-22 01:02:52,788 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:02:52" (1/1) ... [2021-02-22 01:02:52,807 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:02:52" (1/1) ... [2021-02-22 01:02:52,808 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:02:52" (1/1) ... [2021-02-22 01:02:52,879 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:02:52" (1/1) ... [2021-02-22 01:02:52,899 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:02:52" (1/1) ... [2021-02-22 01:02:52,906 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:02:52" (1/1) ... [2021-02-22 01:02:52,922 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-22 01:02:52,923 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-22 01:02:52,923 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-22 01:02:52,924 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-22 01:02:52,924 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:02:52" (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 [2021-02-22 01:02:53,041 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-22 01:02:53,041 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-22 01:02:53,041 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-22 01:02:53,041 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-22 01:02:53,041 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-22 01:02:53,042 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-22 01:02:53,042 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-22 01:02:53,042 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-22 01:02:53,042 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-22 01:02:53,042 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-22 01:02:53,042 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2021-02-22 01:02:53,043 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-22 01:02:53,043 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-22 01:02:53,043 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-22 01:02:53,043 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-22 01:02:53,043 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-22 01:02:53,044 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-22 01:02:53,044 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-22 01:02:53,044 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-22 01:02:53,044 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-22 01:02:53,044 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-22 01:02:53,044 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-22 01:02:53,045 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-02-22 01:02:53,045 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2021-02-22 01:02:53,045 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-22 01:02:53,045 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-22 01:02:53,045 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-22 01:02:53,046 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-22 01:02:53,046 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-22 01:02:53,046 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-22 01:02:53,046 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2021-02-22 01:02:53,046 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2021-02-22 01:02:53,046 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-22 01:02:53,047 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-22 01:02:53,047 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-22 01:02:53,047 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-22 01:02:53,047 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-22 01:02:53,047 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-22 01:02:53,047 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-22 01:02:53,047 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2021-02-22 01:02:53,048 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-22 01:02:53,048 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-22 01:02:53,048 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-22 01:02:53,048 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-22 01:02:53,048 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-22 01:02:53,048 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-22 01:02:53,048 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-22 01:02:53,049 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-22 01:02:53,049 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-22 01:02:53,049 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-22 01:02:53,049 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-22 01:02:53,049 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-22 01:02:53,049 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2021-02-22 01:02:53,049 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-22 01:02:53,050 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-22 01:02:53,050 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-22 01:02:53,050 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-22 01:02:53,050 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-22 01:02:53,050 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-22 01:02:53,050 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-22 01:02:53,051 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-22 01:02:53,051 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-22 01:02:53,051 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-22 01:02:53,051 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-22 01:02:53,051 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-22 01:02:53,051 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-22 01:02:53,051 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-22 01:02:53,052 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-22 01:02:53,052 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-22 01:02:53,052 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2021-02-22 01:02:53,052 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2021-02-22 01:02:53,052 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-22 01:02:53,052 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-02-22 01:02:53,053 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2021-02-22 01:02:53,053 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2021-02-22 01:02:53,053 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-22 01:02:53,053 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-22 01:02:53,053 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-22 01:02:53,053 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-22 01:02:53,053 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-22 01:02:53,054 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-22 01:02:53,054 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-22 01:02:53,054 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-22 01:02:53,054 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-22 01:02:53,054 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-22 01:02:53,054 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-22 01:02:53,055 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-22 01:02:53,055 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-22 01:02:53,055 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-22 01:02:53,055 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-22 01:02:53,055 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-22 01:02:53,055 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-22 01:02:53,056 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-22 01:02:53,056 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-22 01:02:54,724 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-22 01:02:54,724 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-22 01:02:54,727 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 01:02:54 BoogieIcfgContainer [2021-02-22 01:02:54,728 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-22 01:02:54,730 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-22 01:02:54,730 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-22 01:02:54,734 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-22 01:02:54,735 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.02 01:02:52" (1/3) ... [2021-02-22 01:02:54,736 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28333c92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 01:02:54, skipping insertion in model container [2021-02-22 01:02:54,736 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:02:52" (2/3) ... [2021-02-22 01:02:54,737 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28333c92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 01:02:54, skipping insertion in model container [2021-02-22 01:02:54,737 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 01:02:54" (3/3) ... [2021-02-22 01:02:54,739 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product22.cil.c [2021-02-22 01:02:54,746 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-22 01:02:54,754 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-22 01:02:54,792 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-22 01:02:54,835 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-22 01:02:54,835 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-22 01:02:54,835 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-22 01:02:54,836 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-22 01:02:54,836 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-22 01:02:54,836 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-22 01:02:54,836 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-22 01:02:54,836 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-22 01:02:54,861 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states. [2021-02-22 01:02:54,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-02-22 01:02:54,883 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:02:54,884 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] [2021-02-22 01:02:54,885 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:02:54,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:02:54,892 INFO L82 PathProgramCache]: Analyzing trace with hash -2103146512, now seen corresponding path program 1 times [2021-02-22 01:02:54,902 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:02:54,902 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1479116979] [2021-02-22 01:02:54,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:02:54,988 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:02:55,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:02:55,397 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:02:55,399 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:02:55,401 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:02:55,401 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:02:56,029 WARN L202 SmtUtils]: Spent 592.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-22 01:02:56,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:02:56,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:02:56,159 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:02:56,161 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:02:56,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-22 01:02:56,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:02:56,192 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:02:56,193 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:02:56,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-22 01:02:56,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:02:56,199 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:02:56,201 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:02:56,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-22 01:02:56,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:02:56,210 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:02:56,211 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:02:56,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-22 01:02:56,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:02:56,215 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:02:56,216 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:02:56,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-22 01:02:56,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:02:56,224 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:02:56,225 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:02:56,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-22 01:02:56,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:02:56,236 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:02:56,237 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:02:56,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-02-22 01:02:56,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:02:56,242 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:02:56,243 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:02:56,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 01:02:56,284 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1479116979] [2021-02-22 01:02:56,286 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:02:56,287 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-22 01:02:56,287 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614279382] [2021-02-22 01:02:56,294 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-22 01:02:56,294 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:02:56,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-22 01:02:56,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-22 01:02:56,313 INFO L87 Difference]: Start difference. First operand 316 states. Second operand 3 states. [2021-02-22 01:02:58,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:02:58,844 INFO L93 Difference]: Finished difference Result 492 states and 586 transitions. [2021-02-22 01:02:58,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-22 01:02:58,847 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 158 [2021-02-22 01:02:58,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:02:58,863 INFO L225 Difference]: With dead ends: 492 [2021-02-22 01:02:58,863 INFO L226 Difference]: Without dead ends: 306 [2021-02-22 01:02:58,868 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-22 01:02:58,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2021-02-22 01:02:59,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 264. [2021-02-22 01:02:59,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 264 states. [2021-02-22 01:02:59,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 287 transitions. [2021-02-22 01:02:59,023 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 287 transitions. Word has length 158 [2021-02-22 01:02:59,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:02:59,028 INFO L480 AbstractCegarLoop]: Abstraction has 264 states and 287 transitions. [2021-02-22 01:02:59,028 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-22 01:02:59,028 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 287 transitions. [2021-02-22 01:02:59,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-02-22 01:02:59,043 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:02:59,043 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] [2021-02-22 01:02:59,044 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-22 01:02:59,044 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:02:59,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:02:59,045 INFO L82 PathProgramCache]: Analyzing trace with hash -1515575342, now seen corresponding path program 1 times [2021-02-22 01:02:59,045 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:02:59,046 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [215941863] [2021-02-22 01:02:59,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:02:59,053 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:02:59,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:02:59,216 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:02:59,218 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:02:59,219 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:02:59,220 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:02:59,229 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:02:59,229 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:02:59,922 WARN L202 SmtUtils]: Spent 679.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-22 01:02:59,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:02:59,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:02:59,965 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:02:59,966 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:02:59,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-22 01:02:59,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:02:59,973 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:02:59,974 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:02:59,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-22 01:02:59,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:02:59,977 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:02:59,977 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:02:59,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-22 01:02:59,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:02:59,980 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:02:59,981 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:02:59,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-22 01:02:59,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:02:59,984 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:02:59,984 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:02:59,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-02-22 01:02:59,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:02:59,987 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:02:59,988 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:02:59,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-02-22 01:02:59,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:02:59,991 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:02:59,992 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:02:59,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-02-22 01:02:59,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:02:59,995 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:02:59,996 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:00,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 01:03:00,027 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [215941863] [2021-02-22 01:03:00,027 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:03:00,028 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-22 01:03:00,028 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569776966] [2021-02-22 01:03:00,029 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-22 01:03:00,029 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:03:00,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-22 01:03:00,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-22 01:03:00,030 INFO L87 Difference]: Start difference. First operand 264 states and 287 transitions. Second operand 4 states. [2021-02-22 01:03:01,304 WARN L202 SmtUtils]: Spent 528.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-22 01:03:02,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:03:02,976 INFO L93 Difference]: Finished difference Result 404 states and 456 transitions. [2021-02-22 01:03:02,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-22 01:03:02,977 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 159 [2021-02-22 01:03:02,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:03:02,981 INFO L225 Difference]: With dead ends: 404 [2021-02-22 01:03:02,982 INFO L226 Difference]: Without dead ends: 289 [2021-02-22 01:03:02,984 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-22 01:03:02,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2021-02-22 01:03:03,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 254. [2021-02-22 01:03:03,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2021-02-22 01:03:03,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 274 transitions. [2021-02-22 01:03:03,099 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 274 transitions. Word has length 159 [2021-02-22 01:03:03,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:03:03,099 INFO L480 AbstractCegarLoop]: Abstraction has 254 states and 274 transitions. [2021-02-22 01:03:03,100 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-22 01:03:03,100 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 274 transitions. [2021-02-22 01:03:03,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2021-02-22 01:03:03,102 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:03:03,103 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, 1] [2021-02-22 01:03:03,103 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-22 01:03:03,103 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:03:03,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:03:03,104 INFO L82 PathProgramCache]: Analyzing trace with hash -1300969964, now seen corresponding path program 1 times [2021-02-22 01:03:03,104 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:03:03,104 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [992481386] [2021-02-22 01:03:03,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:03:03,108 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:03:03,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:03,184 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:03,185 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:03,186 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:03,187 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:03:03,192 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:03,193 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:03:03,199 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:03,200 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:03,201 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:03,202 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-22 01:03:03,210 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:03,211 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:03,773 WARN L202 SmtUtils]: Spent 541.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-22 01:03:03,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:03:03,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:03,809 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:03,810 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:03,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-22 01:03:03,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:03,817 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:03,817 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:03,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-22 01:03:03,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:03,820 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:03,820 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:03,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-22 01:03:03,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:03,827 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:03,828 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:03,836 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:03,837 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:03:03,856 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:03,857 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:03:03,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-22 01:03:03,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:03,879 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:03,880 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:03,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-02-22 01:03:03,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:03,902 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:03,903 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:03:03,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-02-22 01:03:03,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:03,925 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:03,925 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:03,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-02-22 01:03:03,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:03,928 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:03,929 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:03,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-02-22 01:03:03,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:03,932 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:03,933 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:03,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 01:03:03,975 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [992481386] [2021-02-22 01:03:03,975 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:03:03,975 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-22 01:03:03,975 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631559347] [2021-02-22 01:03:03,976 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-22 01:03:03,976 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:03:03,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-22 01:03:03,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-22 01:03:03,977 INFO L87 Difference]: Start difference. First operand 254 states and 274 transitions. Second operand 10 states. [2021-02-22 01:03:04,896 WARN L202 SmtUtils]: Spent 577.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-22 01:03:05,603 WARN L202 SmtUtils]: Spent 559.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-22 01:03:06,310 WARN L202 SmtUtils]: Spent 682.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-22 01:03:06,992 WARN L202 SmtUtils]: Spent 622.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-22 01:03:07,665 WARN L202 SmtUtils]: Spent 634.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-22 01:03:08,359 WARN L202 SmtUtils]: Spent 669.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-22 01:03:11,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:03:11,025 INFO L93 Difference]: Finished difference Result 450 states and 518 transitions. [2021-02-22 01:03:11,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-22 01:03:11,028 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 172 [2021-02-22 01:03:11,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:03:11,037 INFO L225 Difference]: With dead ends: 450 [2021-02-22 01:03:11,037 INFO L226 Difference]: Without dead ends: 311 [2021-02-22 01:03:11,042 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2021-02-22 01:03:11,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2021-02-22 01:03:11,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 254. [2021-02-22 01:03:11,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2021-02-22 01:03:11,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 273 transitions. [2021-02-22 01:03:11,164 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 273 transitions. Word has length 172 [2021-02-22 01:03:11,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:03:11,165 INFO L480 AbstractCegarLoop]: Abstraction has 254 states and 273 transitions. [2021-02-22 01:03:11,165 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-22 01:03:11,165 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 273 transitions. [2021-02-22 01:03:11,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-02-22 01:03:11,168 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:03:11,169 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-22 01:03:11,169 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-22 01:03:11,169 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:03:11,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:03:11,170 INFO L82 PathProgramCache]: Analyzing trace with hash -1507669824, now seen corresponding path program 1 times [2021-02-22 01:03:11,170 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:03:11,170 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1754357555] [2021-02-22 01:03:11,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:03:11,174 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:03:11,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:11,250 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:11,251 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:03:11,256 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:11,257 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:03:11,258 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:11,258 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:03:11,259 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:11,260 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:03:11,260 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:11,261 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:03:11,262 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:11,262 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:03:11,269 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:11,270 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:03:11,278 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:11,279 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:11,890 WARN L202 SmtUtils]: Spent 592.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-22 01:03:11,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:03:11,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:11,936 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:11,937 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:11,938 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:11,939 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-22 01:03:11,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-22 01:03:11,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:11,947 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:11,948 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:11,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-22 01:03:11,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:11,951 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:11,951 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:11,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-22 01:03:11,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:11,956 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:11,958 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:11,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-22 01:03:11,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:11,961 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:11,962 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:11,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-02-22 01:03:11,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:11,979 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:11,980 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:11,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-22 01:03:11,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:11,998 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:11,999 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:12,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-22 01:03:12,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:12,002 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:12,003 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:12,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-22 01:03:12,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:12,006 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:12,006 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:12,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-02-22 01:03:12,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:12,010 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:12,010 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:12,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-02-22 01:03:12,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:12,015 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:12,015 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:12,016 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:12,017 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:03:12,033 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:12,036 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:03:12,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2021-02-22 01:03:12,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:12,056 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:12,057 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:12,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 01:03:12,142 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1754357555] [2021-02-22 01:03:12,142 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:03:12,142 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-22 01:03:12,142 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52007675] [2021-02-22 01:03:12,143 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-22 01:03:12,143 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:03:12,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-22 01:03:12,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-22 01:03:12,144 INFO L87 Difference]: Start difference. First operand 254 states and 273 transitions. Second operand 10 states. [2021-02-22 01:03:13,185 WARN L202 SmtUtils]: Spent 549.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-22 01:03:16,929 WARN L202 SmtUtils]: Spent 574.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-22 01:03:17,743 WARN L202 SmtUtils]: Spent 635.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-22 01:03:18,410 WARN L202 SmtUtils]: Spent 583.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-22 01:03:19,096 WARN L202 SmtUtils]: Spent 637.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-22 01:03:19,756 WARN L202 SmtUtils]: Spent 621.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-22 01:03:20,732 WARN L202 SmtUtils]: Spent 604.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-22 01:03:21,582 WARN L202 SmtUtils]: Spent 619.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-22 01:03:22,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:03:22,437 INFO L93 Difference]: Finished difference Result 694 states and 853 transitions. [2021-02-22 01:03:22,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-02-22 01:03:22,438 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 185 [2021-02-22 01:03:22,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:03:22,450 INFO L225 Difference]: With dead ends: 694 [2021-02-22 01:03:22,451 INFO L226 Difference]: Without dead ends: 555 [2021-02-22 01:03:22,452 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=134, Invalid=328, Unknown=0, NotChecked=0, Total=462 [2021-02-22 01:03:22,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2021-02-22 01:03:22,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 387. [2021-02-22 01:03:22,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 387 states. [2021-02-22 01:03:22,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 429 transitions. [2021-02-22 01:03:22,636 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 429 transitions. Word has length 185 [2021-02-22 01:03:22,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:03:22,637 INFO L480 AbstractCegarLoop]: Abstraction has 387 states and 429 transitions. [2021-02-22 01:03:22,637 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-22 01:03:22,637 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 429 transitions. [2021-02-22 01:03:22,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-02-22 01:03:22,641 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:03:22,641 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-22 01:03:22,641 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-22 01:03:22,642 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:03:22,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:03:22,642 INFO L82 PathProgramCache]: Analyzing trace with hash -1990663008, now seen corresponding path program 1 times [2021-02-22 01:03:22,642 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:03:22,643 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1390546801] [2021-02-22 01:03:22,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:03:22,646 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:03:22,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:22,707 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:22,707 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:03:22,712 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:22,713 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:03:22,714 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:22,714 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:03:22,715 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:22,716 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:03:22,717 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:22,717 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:03:22,718 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:22,718 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:23,275 WARN L202 SmtUtils]: Spent 544.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-22 01:03:23,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:03:23,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:23,364 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:23,364 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:23,365 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:23,366 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:03:23,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-22 01:03:23,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:23,373 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:23,374 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:23,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-22 01:03:23,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:23,376 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:23,377 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:23,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-22 01:03:23,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:23,380 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:23,381 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:23,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-22 01:03:23,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:23,383 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:23,384 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:23,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-02-22 01:03:23,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:23,397 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:23,398 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:23,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-02-22 01:03:23,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:23,427 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:23,428 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:23,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-02-22 01:03:23,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:23,431 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:23,432 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:23,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-02-22 01:03:23,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:23,449 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:23,449 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:23,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-22 01:03:23,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:23,453 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:23,453 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:23,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-22 01:03:23,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:23,456 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:23,456 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:23,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-02-22 01:03:23,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:23,459 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:23,459 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:23,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2021-02-22 01:03:23,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:23,462 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:23,463 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:23,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-02-22 01:03:23,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:23,465 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:23,467 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:23,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 01:03:23,514 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1390546801] [2021-02-22 01:03:23,515 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:03:23,515 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-22 01:03:23,516 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579848821] [2021-02-22 01:03:23,517 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-22 01:03:23,517 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:03:23,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-22 01:03:23,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-02-22 01:03:23,518 INFO L87 Difference]: Start difference. First operand 387 states and 429 transitions. Second operand 7 states. [2021-02-22 01:03:24,495 WARN L202 SmtUtils]: Spent 584.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-22 01:03:26,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:03:26,151 INFO L93 Difference]: Finished difference Result 619 states and 723 transitions. [2021-02-22 01:03:26,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-22 01:03:26,153 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 195 [2021-02-22 01:03:26,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:03:26,156 INFO L225 Difference]: With dead ends: 619 [2021-02-22 01:03:26,157 INFO L226 Difference]: Without dead ends: 347 [2021-02-22 01:03:26,158 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2021-02-22 01:03:26,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2021-02-22 01:03:26,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 281. [2021-02-22 01:03:26,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 281 states. [2021-02-22 01:03:26,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 296 transitions. [2021-02-22 01:03:26,266 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 296 transitions. Word has length 195 [2021-02-22 01:03:26,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:03:26,266 INFO L480 AbstractCegarLoop]: Abstraction has 281 states and 296 transitions. [2021-02-22 01:03:26,266 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-22 01:03:26,266 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 296 transitions. [2021-02-22 01:03:26,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-02-22 01:03:26,269 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:03:26,269 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-22 01:03:26,270 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-22 01:03:26,270 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:03:26,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:03:26,270 INFO L82 PathProgramCache]: Analyzing trace with hash -1784111267, now seen corresponding path program 1 times [2021-02-22 01:03:26,271 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:03:26,271 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [958856475] [2021-02-22 01:03:26,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:03:26,274 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:03:26,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-22 01:03:26,382 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-22 01:03:26,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-22 01:03:26,456 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-22 01:03:26,718 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-22 01:03:26,719 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-22 01:03:26,721 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-22 01:03:26,761 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.02 01:03:26 BoogieIcfgContainer [2021-02-22 01:03:26,761 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-22 01:03:26,768 INFO L168 Benchmark]: Toolchain (without parser) took 34589.81 ms. Allocated memory was 154.1 MB in the beginning and 420.5 MB in the end (delta: 266.3 MB). Free memory was 129.0 MB in the beginning and 349.0 MB in the end (delta: -220.0 MB). Peak memory consumption was 47.3 MB. Max. memory is 8.0 GB. [2021-02-22 01:03:26,768 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 154.1 MB. Free memory is still 127.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-22 01:03:26,769 INFO L168 Benchmark]: CACSL2BoogieTranslator took 580.33 ms. Allocated memory is still 154.1 MB. Free memory was 127.9 MB in the beginning and 107.1 MB in the end (delta: 20.8 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. [2021-02-22 01:03:26,771 INFO L168 Benchmark]: Boogie Preprocessor took 154.44 ms. Allocated memory is still 154.1 MB. Free memory was 107.1 MB in the beginning and 103.2 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2021-02-22 01:03:26,773 INFO L168 Benchmark]: RCFGBuilder took 1804.77 ms. Allocated memory was 154.1 MB in the beginning and 197.1 MB in the end (delta: 43.0 MB). Free memory was 103.2 MB in the beginning and 151.7 MB in the end (delta: -48.5 MB). Peak memory consumption was 51.8 MB. Max. memory is 8.0 GB. [2021-02-22 01:03:26,774 INFO L168 Benchmark]: TraceAbstraction took 32031.39 ms. Allocated memory was 197.1 MB in the beginning and 420.5 MB in the end (delta: 223.3 MB). Free memory was 151.2 MB in the beginning and 349.0 MB in the end (delta: -197.8 MB). Peak memory consumption was 26.0 MB. Max. memory is 8.0 GB. [2021-02-22 01:03:26,779 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 154.1 MB. Free memory is still 127.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 580.33 ms. Allocated memory is still 154.1 MB. Free memory was 127.9 MB in the beginning and 107.1 MB in the end (delta: 20.8 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 154.44 ms. Allocated memory is still 154.1 MB. Free memory was 107.1 MB in the beginning and 103.2 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1804.77 ms. Allocated memory was 154.1 MB in the beginning and 197.1 MB in the end (delta: 43.0 MB). Free memory was 103.2 MB in the beginning and 151.7 MB in the end (delta: -48.5 MB). Peak memory consumption was 51.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 32031.39 ms. Allocated memory was 197.1 MB in the beginning and 420.5 MB in the end (delta: 223.3 MB). Free memory was 151.2 MB in the beginning and 349.0 MB in the end (delta: -197.8 MB). Peak memory consumption was 26.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 142]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L49] int waterLevel = 1; [L50] int methaneLevelCritical = 0; [L147] int cleanupTimeShifts = 4; [L288] int pumpRunning = 0; [L289] int systemActive = 1; [L711] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L226] int retValue_acc ; [L227] int tmp ; [L231] FCALL select_helpers() [L232] FCALL select_features() [L233] CALL, EXPR valid_product() [L275] int retValue_acc ; [L278] retValue_acc = 1 [L279] return (retValue_acc); [L233] RET, EXPR valid_product() [L233] tmp = valid_product() [L235] COND TRUE \read(tmp) [L237] FCALL setup() [L238] CALL runTest() [L217] CALL test() [L476] int splverifierCounter ; [L477] int tmp ; [L478] int tmp___0 ; [L479] int tmp___1 ; [L480] int tmp___2 ; [L483] splverifierCounter = 0 [L485] COND TRUE 1 [L487] COND TRUE splverifierCounter < 4 [L493] tmp = __VERIFIER_nondet_int() [L495] COND TRUE \read(tmp) [L497] CALL waterRise() [L67] COND TRUE waterLevel < 2 [L68] waterLevel = waterLevel + 1 [L497] RET waterRise() [L503] tmp___0 = __VERIFIER_nondet_int() [L505] COND FALSE !(\read(tmp___0)) [L513] tmp___2 = __VERIFIER_nondet_int() [L515] COND TRUE \read(tmp___2) [L517] CALL startSystem() [L470] systemActive = 1 [L517] RET startSystem() [L530] CALL timeShift() [L296] COND FALSE !(\read(pumpRunning)) [L303] COND TRUE \read(systemActive) [L305] CALL processEnvironment() [L351] int tmp ; [L354] COND FALSE !(\read(pumpRunning)) [L369] CALL processEnvironment__wrappee__lowWaterSensor() [L325] int tmp ; [L328] COND FALSE !(\read(pumpRunning)) [L343] FCALL processEnvironment__wrappee__base() [L369] RET processEnvironment__wrappee__lowWaterSensor() [L305] RET processEnvironment() [L311] CALL __utac_acc__Specification3_spec__1() [L909] int tmp ; [L910] int tmp___0 ; [L911] int tmp___1 ; [L915] CALL, EXPR isMethaneLevelCritical() [L88] int retValue_acc ; [L91] retValue_acc = methaneLevelCritical [L92] return (retValue_acc); [L915] RET, EXPR isMethaneLevelCritical() [L915] tmp = isMethaneLevelCritical() [L917] COND FALSE !(\read(tmp)) [L921] CALL, EXPR getWaterLevel() [L120] int retValue_acc ; [L123] retValue_acc = waterLevel [L124] return (retValue_acc); [L921] RET, EXPR getWaterLevel() [L921] tmp___0 = getWaterLevel() [L923] COND TRUE tmp___0 == 2 [L925] CALL, EXPR isPumpRunning() [L403] int retValue_acc ; [L406] retValue_acc = pumpRunning [L407] return (retValue_acc); [L925] RET, EXPR isPumpRunning() [L925] tmp___1 = isPumpRunning() [L927] COND FALSE !(\read(tmp___1)) [L931] CALL __automaton_fail() [L142] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 40 procedures, 634 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 31.8s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 25.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1158 SDtfs, 2291 SDslu, 1487 SDs, 0 SdLazy, 3008 SolverSat, 748 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 12.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 171 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 13.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=387occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 5 MinimizatonAttempts, 368 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...