/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_product56.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-22 01:05:11,656 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-22 01:05:11,660 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-22 01:05:11,716 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-22 01:05:11,717 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-22 01:05:11,721 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-22 01:05:11,725 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-22 01:05:11,733 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-22 01:05:11,737 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-22 01:05:11,743 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-22 01:05:11,744 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-22 01:05:11,746 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-22 01:05:11,747 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-22 01:05:11,749 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-22 01:05:11,751 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-22 01:05:11,753 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-22 01:05:11,778 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-22 01:05:11,779 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-22 01:05:11,787 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-22 01:05:11,795 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-22 01:05:11,797 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-22 01:05:11,799 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-22 01:05:11,800 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-22 01:05:11,803 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-22 01:05:11,812 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-22 01:05:11,812 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-22 01:05:11,813 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-22 01:05:11,815 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-22 01:05:11,816 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-22 01:05:11,817 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-22 01:05:11,817 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-22 01:05:11,818 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-22 01:05:11,820 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-22 01:05:11,821 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-22 01:05:11,822 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-22 01:05:11,823 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-22 01:05:11,824 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-22 01:05:11,824 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-22 01:05:11,824 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-22 01:05:11,825 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-22 01:05:11,826 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-22 01:05:11,827 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 01:05:11,848 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-22 01:05:11,848 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-22 01:05:11,853 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-22 01:05:11,854 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-22 01:05:11,854 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-22 01:05:11,854 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-22 01:05:11,854 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-22 01:05:11,855 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-22 01:05:11,855 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-22 01:05:11,855 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-22 01:05:11,856 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-22 01:05:11,857 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-22 01:05:11,857 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-22 01:05:11,857 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-22 01:05:11,858 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-22 01:05:11,858 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-22 01:05:11,858 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-22 01:05:11,858 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-22 01:05:11,859 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-22 01:05:11,859 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-22 01:05:11,859 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-22 01:05:11,860 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-22 01:05:11,860 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-22 01:05:11,860 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-22 01:05:12,269 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-22 01:05:12,306 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-22 01:05:12,309 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-22 01:05:12,311 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-22 01:05:12,317 INFO L275 PluginConnector]: CDTParser initialized [2021-02-22 01:05:12,319 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product56.cil.c [2021-02-22 01:05:12,406 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e95ea2aa3/5e5c5c03753349fd963151eba5ba2a48/FLAG2fcd64aeb [2021-02-22 01:05:13,222 INFO L306 CDTParser]: Found 1 translation units. [2021-02-22 01:05:13,225 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product56.cil.c [2021-02-22 01:05:13,246 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e95ea2aa3/5e5c5c03753349fd963151eba5ba2a48/FLAG2fcd64aeb [2021-02-22 01:05:13,442 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e95ea2aa3/5e5c5c03753349fd963151eba5ba2a48 [2021-02-22 01:05:13,445 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-22 01:05:13,458 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-22 01:05:13,464 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-22 01:05:13,464 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-22 01:05:13,468 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-22 01:05:13,469 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 01:05:13" (1/1) ... [2021-02-22 01:05:13,470 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23d0143c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:05:13, skipping insertion in model container [2021-02-22 01:05:13,470 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 01:05:13" (1/1) ... [2021-02-22 01:05:13,479 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-22 01:05:13,548 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-22 01:05:14,337 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_product56.cil.c[18951,18964] [2021-02-22 01:05:14,343 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 01:05:14,365 INFO L203 MainTranslator]: Completed pre-run [2021-02-22 01:05:14,504 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_product56.cil.c[18951,18964] [2021-02-22 01:05:14,505 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 01:05:14,597 INFO L208 MainTranslator]: Completed translation [2021-02-22 01:05:14,597 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:05:14 WrapperNode [2021-02-22 01:05:14,598 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-22 01:05:14,599 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-22 01:05:14,599 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-22 01:05:14,600 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-22 01:05:14,615 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:05:14" (1/1) ... [2021-02-22 01:05:14,616 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:05:14" (1/1) ... [2021-02-22 01:05:14,655 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:05:14" (1/1) ... [2021-02-22 01:05:14,657 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:05:14" (1/1) ... [2021-02-22 01:05:14,717 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:05:14" (1/1) ... [2021-02-22 01:05:14,740 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:05:14" (1/1) ... [2021-02-22 01:05:14,754 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:05:14" (1/1) ... [2021-02-22 01:05:14,764 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-22 01:05:14,765 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-22 01:05:14,768 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-22 01:05:14,768 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-22 01:05:14,769 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:05:14" (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 01:05:14,867 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-22 01:05:14,868 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-22 01:05:14,868 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-22 01:05:14,868 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-22 01:05:14,868 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-22 01:05:14,869 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-22 01:05:14,869 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-22 01:05:14,869 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-22 01:05:14,869 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-22 01:05:14,869 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-22 01:05:14,869 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-22 01:05:14,870 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-22 01:05:14,870 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-22 01:05:14,870 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-22 01:05:14,870 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-22 01:05:14,870 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-22 01:05:14,871 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-22 01:05:14,871 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-22 01:05:14,871 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-22 01:05:14,871 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2021-02-22 01:05:14,871 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-22 01:05:14,871 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-22 01:05:14,872 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-22 01:05:14,872 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-22 01:05:14,872 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-22 01:05:14,872 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-22 01:05:14,872 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2021-02-22 01:05:14,872 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2021-02-22 01:05:14,873 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-22 01:05:14,873 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-02-22 01:05:14,873 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2021-02-22 01:05:14,873 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2021-02-22 01:05:14,873 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-22 01:05:14,874 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-22 01:05:14,874 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-22 01:05:14,874 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-22 01:05:14,874 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-22 01:05:14,874 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-22 01:05:14,874 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2021-02-22 01:05:14,874 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2021-02-22 01:05:14,875 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2021-02-22 01:05:14,875 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2021-02-22 01:05:14,875 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-22 01:05:14,875 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-22 01:05:14,875 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-22 01:05:14,875 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-22 01:05:14,876 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-22 01:05:14,876 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-22 01:05:14,876 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-22 01:05:14,876 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-22 01:05:14,876 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-22 01:05:14,876 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-22 01:05:14,877 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-22 01:05:14,877 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-22 01:05:14,877 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-22 01:05:14,877 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-22 01:05:14,877 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-22 01:05:14,877 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-22 01:05:14,877 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-22 01:05:14,878 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-22 01:05:14,878 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-22 01:05:14,878 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-22 01:05:14,878 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-22 01:05:14,878 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-22 01:05:14,878 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-22 01:05:14,878 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-22 01:05:14,879 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-22 01:05:14,879 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-22 01:05:14,879 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-22 01:05:14,879 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-22 01:05:14,879 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-22 01:05:14,879 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-22 01:05:14,880 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-22 01:05:14,880 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-22 01:05:14,880 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-22 01:05:14,880 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-22 01:05:14,880 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-22 01:05:14,880 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-22 01:05:14,881 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-22 01:05:14,881 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-22 01:05:14,881 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-22 01:05:14,881 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-22 01:05:14,881 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-22 01:05:14,881 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2021-02-22 01:05:14,882 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-22 01:05:14,882 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-22 01:05:14,882 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2021-02-22 01:05:14,882 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2021-02-22 01:05:14,882 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-22 01:05:14,882 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-22 01:05:14,882 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2021-02-22 01:05:14,883 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2021-02-22 01:05:14,883 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-22 01:05:14,883 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-02-22 01:05:14,883 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2021-02-22 01:05:14,883 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2021-02-22 01:05:14,883 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2021-02-22 01:05:14,884 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2021-02-22 01:05:14,884 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-22 01:05:14,884 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-22 01:05:14,884 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-22 01:05:14,884 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-22 01:05:16,371 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-22 01:05:16,371 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-22 01:05:16,374 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 01:05:16 BoogieIcfgContainer [2021-02-22 01:05:16,374 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-22 01:05:16,376 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-22 01:05:16,376 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-22 01:05:16,380 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-22 01:05:16,380 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.02 01:05:13" (1/3) ... [2021-02-22 01:05:16,381 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e339e48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 01:05:16, skipping insertion in model container [2021-02-22 01:05:16,381 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:05:14" (2/3) ... [2021-02-22 01:05:16,382 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e339e48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 01:05:16, skipping insertion in model container [2021-02-22 01:05:16,382 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 01:05:16" (3/3) ... [2021-02-22 01:05:16,383 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product56.cil.c [2021-02-22 01:05:16,390 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-22 01:05:16,396 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-22 01:05:16,415 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-22 01:05:16,439 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-22 01:05:16,439 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-22 01:05:16,440 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-22 01:05:16,440 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-22 01:05:16,440 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-22 01:05:16,440 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-22 01:05:16,440 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-22 01:05:16,440 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-22 01:05:16,480 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states. [2021-02-22 01:05:16,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-02-22 01:05:16,502 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:05:16,504 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 01:05:16,504 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:05:16,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:05:16,511 INFO L82 PathProgramCache]: Analyzing trace with hash 991173375, now seen corresponding path program 1 times [2021-02-22 01:05:16,520 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:05:16,521 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [169378785] [2021-02-22 01:05:16,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:05:16,603 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:05:16,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:05:17,045 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:17,046 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:17,047 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:17,048 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:17,470 WARN L202 SmtUtils]: Spent 405.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-22 01:05:17,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:05:17,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:05:17,593 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:17,594 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:17,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-22 01:05:17,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:05:17,619 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:17,620 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:17,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-22 01:05:17,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:05:17,627 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:17,628 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:17,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-22 01:05:17,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:05:17,637 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:17,638 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:17,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-22 01:05:17,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:05:17,645 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:17,646 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:17,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-22 01:05:17,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:05:17,654 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:17,655 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:17,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-22 01:05:17,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:05:17,662 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:17,663 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:17,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-02-22 01:05:17,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:05:17,669 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:17,670 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:17,717 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 01:05:17,719 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [169378785] [2021-02-22 01:05:17,721 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:05:17,722 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-22 01:05:17,722 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107986869] [2021-02-22 01:05:17,728 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-22 01:05:17,729 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:05:17,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-22 01:05:17,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-22 01:05:17,747 INFO L87 Difference]: Start difference. First operand 359 states. Second operand 3 states. [2021-02-22 01:05:19,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:05:19,694 INFO L93 Difference]: Finished difference Result 582 states and 692 transitions. [2021-02-22 01:05:19,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-22 01:05:19,697 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 158 [2021-02-22 01:05:19,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:05:19,714 INFO L225 Difference]: With dead ends: 582 [2021-02-22 01:05:19,714 INFO L226 Difference]: Without dead ends: 353 [2021-02-22 01:05:19,720 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-22 01:05:19,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2021-02-22 01:05:19,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 307. [2021-02-22 01:05:19,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 307 states. [2021-02-22 01:05:19,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 337 transitions. [2021-02-22 01:05:19,900 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 337 transitions. Word has length 158 [2021-02-22 01:05:19,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:05:19,901 INFO L480 AbstractCegarLoop]: Abstraction has 307 states and 337 transitions. [2021-02-22 01:05:19,901 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-22 01:05:19,902 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 337 transitions. [2021-02-22 01:05:19,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-02-22 01:05:19,907 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:05:19,908 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 01:05:19,908 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-22 01:05:19,908 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:05:19,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:05:19,909 INFO L82 PathProgramCache]: Analyzing trace with hash 1451108837, now seen corresponding path program 1 times [2021-02-22 01:05:19,909 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:05:19,909 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2104138274] [2021-02-22 01:05:19,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:05:19,924 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:05:19,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:05:20,034 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:20,035 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:20,037 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:20,038 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:05:20,045 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:20,046 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:20,354 WARN L202 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-22 01:05:20,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:05:20,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:05:20,397 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:20,397 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:20,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-22 01:05:20,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:05:20,405 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:20,406 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:20,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-22 01:05:20,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:05:20,408 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:20,409 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:20,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-22 01:05:20,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:05:20,412 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:20,412 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:20,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-22 01:05:20,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:05:20,415 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:20,415 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:20,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-02-22 01:05:20,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:05:20,418 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:20,419 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:20,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-02-22 01:05:20,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:05:20,421 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:20,422 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:20,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-02-22 01:05:20,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:05:20,425 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:20,425 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:20,461 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 01:05:20,462 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2104138274] [2021-02-22 01:05:20,462 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:05:20,462 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-22 01:05:20,463 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53793261] [2021-02-22 01:05:20,464 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-22 01:05:20,464 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:05:20,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-22 01:05:20,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-22 01:05:20,465 INFO L87 Difference]: Start difference. First operand 307 states and 337 transitions. Second operand 4 states. [2021-02-22 01:05:21,190 WARN L202 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-22 01:05:22,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:05:22,679 INFO L93 Difference]: Finished difference Result 488 states and 554 transitions. [2021-02-22 01:05:22,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-22 01:05:22,680 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 159 [2021-02-22 01:05:22,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:05:22,685 INFO L225 Difference]: With dead ends: 488 [2021-02-22 01:05:22,685 INFO L226 Difference]: Without dead ends: 336 [2021-02-22 01:05:22,688 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-22 01:05:22,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2021-02-22 01:05:22,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 297. [2021-02-22 01:05:22,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 297 states. [2021-02-22 01:05:22,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 324 transitions. [2021-02-22 01:05:22,815 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 324 transitions. Word has length 159 [2021-02-22 01:05:22,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:05:22,816 INFO L480 AbstractCegarLoop]: Abstraction has 297 states and 324 transitions. [2021-02-22 01:05:22,816 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-22 01:05:22,816 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 324 transitions. [2021-02-22 01:05:22,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2021-02-22 01:05:22,819 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:05:22,820 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 01:05:22,820 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-22 01:05:22,820 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:05:22,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:05:22,821 INFO L82 PathProgramCache]: Analyzing trace with hash -89040518, now seen corresponding path program 1 times [2021-02-22 01:05:22,821 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:05:22,821 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [304885019] [2021-02-22 01:05:22,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:05:22,825 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:05:22,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:05:22,901 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:22,902 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:22,903 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:22,903 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:05:22,906 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:22,907 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:05:22,911 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:22,911 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:22,912 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:22,912 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-22 01:05:22,919 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:22,919 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:23,254 WARN L202 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-22 01:05:23,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:05:23,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:05:23,300 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:23,302 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:23,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-22 01:05:23,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:05:23,310 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:23,311 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:23,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-22 01:05:23,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:05:23,313 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:23,314 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:23,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-22 01:05:23,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:05:23,325 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:23,326 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:23,333 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:23,335 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:05:23,349 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:23,350 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:05:23,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-22 01:05:23,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:05:23,366 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:23,367 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:23,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-02-22 01:05:23,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:05:23,381 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:23,382 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:05:23,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-02-22 01:05:23,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:05:23,397 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:23,397 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:23,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-02-22 01:05:23,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:05:23,400 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:23,401 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:23,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-02-22 01:05:23,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:05:23,408 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:23,408 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:23,461 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 01:05:23,462 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [304885019] [2021-02-22 01:05:23,462 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:05:23,462 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-22 01:05:23,462 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776212241] [2021-02-22 01:05:23,463 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-22 01:05:23,464 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:05:23,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-22 01:05:23,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-22 01:05:23,468 INFO L87 Difference]: Start difference. First operand 297 states and 324 transitions. Second operand 10 states. [2021-02-22 01:05:24,050 WARN L202 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-22 01:05:24,485 WARN L202 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-22 01:05:24,838 WARN L202 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-22 01:05:25,255 WARN L202 SmtUtils]: Spent 374.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-22 01:05:25,642 WARN L202 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-22 01:05:25,999 WARN L202 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-22 01:05:27,043 WARN L202 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-22 01:05:30,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:05:30,628 INFO L93 Difference]: Finished difference Result 831 states and 970 transitions. [2021-02-22 01:05:30,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-02-22 01:05:30,630 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 172 [2021-02-22 01:05:30,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:05:30,637 INFO L225 Difference]: With dead ends: 831 [2021-02-22 01:05:30,637 INFO L226 Difference]: Without dead ends: 649 [2021-02-22 01:05:30,642 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2021-02-22 01:05:30,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 649 states. [2021-02-22 01:05:30,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 649 to 550. [2021-02-22 01:05:30,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 550 states. [2021-02-22 01:05:30,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 550 states to 550 states and 619 transitions. [2021-02-22 01:05:30,909 INFO L78 Accepts]: Start accepts. Automaton has 550 states and 619 transitions. Word has length 172 [2021-02-22 01:05:30,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:05:30,909 INFO L480 AbstractCegarLoop]: Abstraction has 550 states and 619 transitions. [2021-02-22 01:05:30,909 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-22 01:05:30,910 INFO L276 IsEmpty]: Start isEmpty. Operand 550 states and 619 transitions. [2021-02-22 01:05:30,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-02-22 01:05:30,914 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:05:30,914 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] [2021-02-22 01:05:30,914 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-22 01:05:30,915 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:05:30,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:05:30,915 INFO L82 PathProgramCache]: Analyzing trace with hash -1638600071, now seen corresponding path program 1 times [2021-02-22 01:05:30,916 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:05:30,916 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1598739689] [2021-02-22 01:05:30,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:05:30,919 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:05:30,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:05:31,002 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:31,003 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:05:31,006 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:31,007 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:05:31,007 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:31,008 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:05:31,008 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:31,009 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:05:31,009 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:31,010 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:05:31,010 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:31,011 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:05:31,015 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:31,016 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:05:31,021 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:31,021 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:31,341 WARN L202 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-22 01:05:31,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:05:31,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:05:31,391 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:31,392 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:31,393 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:31,393 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-22 01:05:31,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-22 01:05:31,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:05:31,400 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:31,401 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:31,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-22 01:05:31,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:05:31,404 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:31,405 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:31,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-22 01:05:31,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:05:31,409 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:31,409 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:31,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-22 01:05:31,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:05:31,418 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:31,419 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:31,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-02-22 01:05:31,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:05:31,433 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:31,434 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:31,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-02-22 01:05:31,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:05:31,451 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:31,452 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:31,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-02-22 01:05:31,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:05:31,456 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:31,457 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:31,457 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:31,458 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:05:31,468 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:31,469 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:05:31,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2021-02-22 01:05:31,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:05:31,482 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:31,483 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:31,527 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 01:05:31,528 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1598739689] [2021-02-22 01:05:31,528 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:05:31,528 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-22 01:05:31,528 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828421775] [2021-02-22 01:05:31,529 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-22 01:05:31,529 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:05:31,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-22 01:05:31,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-22 01:05:31,530 INFO L87 Difference]: Start difference. First operand 550 states and 619 transitions. Second operand 9 states. [2021-02-22 01:05:32,199 WARN L202 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-22 01:05:34,523 WARN L202 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-22 01:05:34,985 WARN L202 SmtUtils]: Spent 357.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-22 01:05:35,523 WARN L202 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-22 01:05:35,976 WARN L202 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-22 01:05:36,335 WARN L202 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-22 01:05:36,729 WARN L202 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-22 01:05:37,110 WARN L202 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-22 01:05:38,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:05:38,609 INFO L93 Difference]: Finished difference Result 1510 states and 1822 transitions. [2021-02-22 01:05:38,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-02-22 01:05:38,609 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 177 [2021-02-22 01:05:38,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:05:38,618 INFO L225 Difference]: With dead ends: 1510 [2021-02-22 01:05:38,618 INFO L226 Difference]: Without dead ends: 1075 [2021-02-22 01:05:38,621 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2021-02-22 01:05:38,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1075 states. [2021-02-22 01:05:39,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1075 to 968. [2021-02-22 01:05:39,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 968 states. [2021-02-22 01:05:39,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 968 states to 968 states and 1116 transitions. [2021-02-22 01:05:39,132 INFO L78 Accepts]: Start accepts. Automaton has 968 states and 1116 transitions. Word has length 177 [2021-02-22 01:05:39,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:05:39,132 INFO L480 AbstractCegarLoop]: Abstraction has 968 states and 1116 transitions. [2021-02-22 01:05:39,132 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-22 01:05:39,133 INFO L276 IsEmpty]: Start isEmpty. Operand 968 states and 1116 transitions. [2021-02-22 01:05:39,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-02-22 01:05:39,138 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:05:39,138 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] [2021-02-22 01:05:39,139 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-22 01:05:39,139 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:05:39,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:05:39,139 INFO L82 PathProgramCache]: Analyzing trace with hash -1651444693, now seen corresponding path program 1 times [2021-02-22 01:05:39,140 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:05:39,140 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [834204919] [2021-02-22 01:05:39,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:05:39,143 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:05:39,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-22 01:05:39,219 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-22 01:05:39,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-22 01:05:39,291 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-22 01:05:39,478 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-22 01:05:39,478 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-22 01:05:39,479 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-22 01:05:39,505 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.02 01:05:39 BoogieIcfgContainer [2021-02-22 01:05:39,505 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-22 01:05:39,511 INFO L168 Benchmark]: Toolchain (without parser) took 26058.74 ms. Allocated memory was 151.0 MB in the beginning and 497.0 MB in the end (delta: 346.0 MB). Free memory was 125.8 MB in the beginning and 235.7 MB in the end (delta: -109.9 MB). Peak memory consumption was 237.0 MB. Max. memory is 8.0 GB. [2021-02-22 01:05:39,512 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 151.0 MB. Free memory is still 124.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-22 01:05:39,518 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1134.10 ms. Allocated memory is still 151.0 MB. Free memory was 124.5 MB in the beginning and 132.7 MB in the end (delta: -8.2 MB). Peak memory consumption was 26.9 MB. Max. memory is 8.0 GB. [2021-02-22 01:05:39,518 INFO L168 Benchmark]: Boogie Preprocessor took 164.95 ms. Allocated memory is still 151.0 MB. Free memory was 132.7 MB in the beginning and 128.5 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2021-02-22 01:05:39,520 INFO L168 Benchmark]: RCFGBuilder took 1609.66 ms. Allocated memory is still 151.0 MB. Free memory was 128.5 MB in the beginning and 65.8 MB in the end (delta: 62.8 MB). Peak memory consumption was 64.9 MB. Max. memory is 8.0 GB. [2021-02-22 01:05:39,520 INFO L168 Benchmark]: TraceAbstraction took 23128.94 ms. Allocated memory was 151.0 MB in the beginning and 497.0 MB in the end (delta: 346.0 MB). Free memory was 65.8 MB in the beginning and 235.7 MB in the end (delta: -169.9 MB). Peak memory consumption was 176.7 MB. Max. memory is 8.0 GB. [2021-02-22 01:05:39,526 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 151.0 MB. Free memory is still 124.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 1134.10 ms. Allocated memory is still 151.0 MB. Free memory was 124.5 MB in the beginning and 132.7 MB in the end (delta: -8.2 MB). Peak memory consumption was 26.9 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 164.95 ms. Allocated memory is still 151.0 MB. Free memory was 132.7 MB in the beginning and 128.5 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1609.66 ms. Allocated memory is still 151.0 MB. Free memory was 128.5 MB in the beginning and 65.8 MB in the end (delta: 62.8 MB). Peak memory consumption was 64.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 23128.94 ms. Allocated memory was 151.0 MB in the beginning and 497.0 MB in the end (delta: 346.0 MB). Free memory was 65.8 MB in the beginning and 235.7 MB in the end (delta: -169.9 MB). Peak memory consumption was 176.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1015]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L42] int cleanupTimeShifts = 4; [L315] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L589] int waterLevel = 1; [L590] int methaneLevelCritical = 0; [L696] int pumpRunning = 0; [L697] int systemActive = 1; [L123] int retValue_acc ; [L124] int tmp ; [L128] FCALL select_helpers() [L129] FCALL select_features() [L130] CALL, EXPR valid_product() [L538] int retValue_acc ; [L541] retValue_acc = 1 [L542] return (retValue_acc); [L130] RET, EXPR valid_product() [L130] tmp = valid_product() [L132] COND TRUE \read(tmp) [L134] FCALL setup() [L135] CALL runTest() [L114] CALL test() [L943] int splverifierCounter ; [L944] int tmp ; [L945] int tmp___0 ; [L946] int tmp___1 ; [L947] int tmp___2 ; [L950] splverifierCounter = 0 [L952] COND TRUE 1 [L954] COND TRUE splverifierCounter < 4 [L960] tmp = __VERIFIER_nondet_int() [L962] COND TRUE \read(tmp) [L964] CALL waterRise() [L607] COND TRUE waterLevel < 2 [L608] waterLevel = waterLevel + 1 [L964] RET waterRise() [L970] tmp___0 = __VERIFIER_nondet_int() [L972] COND FALSE !(\read(tmp___0)) [L980] tmp___2 = __VERIFIER_nondet_int() [L982] COND FALSE !(\read(tmp___2)) [L988] tmp___1 = __VERIFIER_nondet_int() [L990] COND TRUE \read(tmp___1) [L992] CALL stopSystem() [L922] COND FALSE !(\read(pumpRunning)) [L929] systemActive = 0 [L992] RET stopSystem() [L999] CALL timeShift() [L703] COND FALSE !(\read(pumpRunning)) [L710] COND FALSE !(\read(systemActive)) [L718] CALL __utac_acc__Specification3_spec__1() [L552] int tmp ; [L553] int tmp___0 ; [L554] int tmp___1 ; [L558] CALL, EXPR isMethaneLevelCritical() [L628] int retValue_acc ; [L631] retValue_acc = methaneLevelCritical [L632] return (retValue_acc); [L558] RET, EXPR isMethaneLevelCritical() [L558] tmp = isMethaneLevelCritical() [L560] COND FALSE !(\read(tmp)) [L564] CALL, EXPR getWaterLevel() [L660] int retValue_acc ; [L663] retValue_acc = waterLevel [L664] return (retValue_acc); [L564] RET, EXPR getWaterLevel() [L564] tmp___0 = getWaterLevel() [L566] COND TRUE tmp___0 == 2 [L568] CALL, EXPR isPumpRunning() [L836] int retValue_acc ; [L839] retValue_acc = pumpRunning [L840] return (retValue_acc); [L568] RET, EXPR isPumpRunning() [L568] tmp___1 = isPumpRunning() [L570] COND FALSE !(\read(tmp___1)) [L574] CALL __automaton_fail() [L1015] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 44 procedures, 674 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 23.0s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 18.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1181 SDtfs, 1909 SDslu, 1539 SDs, 0 SdLazy, 3786 SolverSat, 677 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 9.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 116 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 7.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=968occurred 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: 1.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 291 StatesRemovedByMinimization, 4 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...