/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product22.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-07 00:01:26,642 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-07 00:01:26,647 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-07 00:01:26,699 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-07 00:01:26,700 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-07 00:01:26,704 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-07 00:01:26,707 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-07 00:01:26,714 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-07 00:01:26,717 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-07 00:01:26,723 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-07 00:01:26,738 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-07 00:01:26,739 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-07 00:01:26,740 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-07 00:01:26,743 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-07 00:01:26,744 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-07 00:01:26,746 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-07 00:01:26,747 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-07 00:01:26,749 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-07 00:01:26,756 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-07 00:01:26,770 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-07 00:01:26,772 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-07 00:01:26,774 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-07 00:01:26,775 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-07 00:01:26,777 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-07 00:01:26,786 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-07 00:01:26,786 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-07 00:01:26,786 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-07 00:01:26,788 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-07 00:01:26,788 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-07 00:01:26,789 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-07 00:01:26,790 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-07 00:01:26,791 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-07 00:01:26,792 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-07 00:01:26,793 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-07 00:01:26,794 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-07 00:01:26,794 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-07 00:01:26,795 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-07 00:01:26,796 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-07 00:01:26,796 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-07 00:01:26,797 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-07 00:01:26,798 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-07 00:01:26,799 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-11-07 00:01:26,821 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-07 00:01:26,821 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-07 00:01:26,827 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-07 00:01:26,827 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-07 00:01:26,827 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-07 00:01:26,827 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-07 00:01:26,827 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-07 00:01:26,828 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-07 00:01:26,828 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-07 00:01:26,828 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-07 00:01:26,829 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-07 00:01:26,829 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-07 00:01:26,830 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-07 00:01:26,830 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-07 00:01:26,830 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-07 00:01:26,831 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-11-07 00:01:26,831 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-07 00:01:26,831 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-07 00:01:26,831 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 00:01:26,831 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-07 00:01:26,831 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-11-07 00:01:26,832 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-07 00:01:26,832 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-07 00:01:27,192 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-07 00:01:27,216 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-07 00:01:27,219 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-07 00:01:27,220 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-07 00:01:27,221 INFO L275 PluginConnector]: CDTParser initialized [2020-11-07 00:01:27,222 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product22.cil.c [2020-11-07 00:01:27,297 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee1156abf/279bf00ebd9d48ab9390041408da72ea/FLAGacbb8fe0d [2020-11-07 00:01:27,926 INFO L306 CDTParser]: Found 1 translation units. [2020-11-07 00:01:27,927 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product22.cil.c [2020-11-07 00:01:27,941 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee1156abf/279bf00ebd9d48ab9390041408da72ea/FLAGacbb8fe0d [2020-11-07 00:01:28,219 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee1156abf/279bf00ebd9d48ab9390041408da72ea [2020-11-07 00:01:28,222 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-07 00:01:28,231 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-07 00:01:28,235 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-07 00:01:28,235 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-07 00:01:28,240 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-07 00:01:28,240 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:01:28" (1/1) ... [2020-11-07 00:01:28,250 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b2d38ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:01:28, skipping insertion in model container [2020-11-07 00:01:28,250 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:01:28" (1/1) ... [2020-11-07 00:01:28,259 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-07 00:01:28,333 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-07 00:01:28,632 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 00:01:28,657 INFO L203 MainTranslator]: Completed pre-run [2020-11-07 00:01:28,794 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 00:01:28,855 INFO L208 MainTranslator]: Completed translation [2020-11-07 00:01:28,856 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:01:28 WrapperNode [2020-11-07 00:01:28,856 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-07 00:01:28,857 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-07 00:01:28,858 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-07 00:01:28,858 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-07 00:01:28,877 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:01:28" (1/1) ... [2020-11-07 00:01:28,877 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:01:28" (1/1) ... [2020-11-07 00:01:28,923 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:01:28" (1/1) ... [2020-11-07 00:01:28,924 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:01:28" (1/1) ... [2020-11-07 00:01:28,965 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:01:28" (1/1) ... [2020-11-07 00:01:28,974 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:01:28" (1/1) ... [2020-11-07 00:01:28,979 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:01:28" (1/1) ... [2020-11-07 00:01:28,986 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-07 00:01:28,987 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-07 00:01:28,988 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-07 00:01:28,988 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-07 00:01:28,989 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:01:28" (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 [2020-11-07 00:01:29,074 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-07 00:01:29,074 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-07 00:01:29,074 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-11-07 00:01:29,075 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-07 00:01:29,075 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-11-07 00:01:29,075 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-11-07 00:01:29,075 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-11-07 00:01:29,075 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-11-07 00:01:29,076 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-11-07 00:01:29,076 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-11-07 00:01:29,076 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-11-07 00:01:29,076 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-11-07 00:01:29,076 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-11-07 00:01:29,077 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-11-07 00:01:29,077 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-11-07 00:01:29,077 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-11-07 00:01:29,077 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-07 00:01:29,078 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-11-07 00:01:29,078 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-11-07 00:01:29,078 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-11-07 00:01:29,078 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-11-07 00:01:29,078 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-11-07 00:01:29,079 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-11-07 00:01:29,079 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-11-07 00:01:29,079 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-11-07 00:01:29,079 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-11-07 00:01:29,079 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-11-07 00:01:29,080 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-11-07 00:01:29,080 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-11-07 00:01:29,080 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-11-07 00:01:29,080 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-11-07 00:01:29,080 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-11-07 00:01:29,081 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-11-07 00:01:29,081 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-11-07 00:01:29,081 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-11-07 00:01:29,081 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-11-07 00:01:29,081 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-11-07 00:01:29,082 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-11-07 00:01:29,082 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-11-07 00:01:29,082 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-11-07 00:01:29,082 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-07 00:01:29,082 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-07 00:01:29,083 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-07 00:01:29,083 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-07 00:01:29,083 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-07 00:01:29,083 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-11-07 00:01:29,084 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-11-07 00:01:29,084 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-11-07 00:01:29,084 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-11-07 00:01:29,084 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-11-07 00:01:29,084 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-11-07 00:01:29,085 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-11-07 00:01:29,085 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-11-07 00:01:29,085 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-11-07 00:01:29,085 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-11-07 00:01:29,085 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-11-07 00:01:29,086 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-11-07 00:01:29,086 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-11-07 00:01:29,086 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-11-07 00:01:29,086 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-11-07 00:01:29,086 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-11-07 00:01:29,087 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-11-07 00:01:29,087 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-11-07 00:01:29,087 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-11-07 00:01:29,087 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-07 00:01:29,087 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-11-07 00:01:29,088 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-11-07 00:01:29,088 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-11-07 00:01:29,088 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-11-07 00:01:29,088 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-11-07 00:01:29,088 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-11-07 00:01:29,089 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-11-07 00:01:29,089 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-11-07 00:01:29,089 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-11-07 00:01:29,089 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-11-07 00:01:29,089 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-11-07 00:01:29,090 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-11-07 00:01:29,090 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-11-07 00:01:29,090 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-11-07 00:01:29,090 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-07 00:01:29,090 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-11-07 00:01:29,090 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-07 00:01:29,091 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-11-07 00:01:29,091 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-11-07 00:01:29,091 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-07 00:01:29,091 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-11-07 00:01:29,091 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-11-07 00:01:29,092 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-07 00:01:29,092 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-11-07 00:01:29,092 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-11-07 00:01:29,092 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-11-07 00:01:29,092 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-07 00:01:29,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-07 00:01:29,093 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-07 00:01:30,379 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-07 00:01:30,380 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-11-07 00:01:30,387 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:01:30 BoogieIcfgContainer [2020-11-07 00:01:30,387 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-07 00:01:30,389 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-07 00:01:30,389 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-07 00:01:30,392 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-07 00:01:30,392 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:01:28" (1/3) ... [2020-11-07 00:01:30,393 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@187a0529 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:01:30, skipping insertion in model container [2020-11-07 00:01:30,393 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:01:28" (2/3) ... [2020-11-07 00:01:30,393 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@187a0529 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:01:30, skipping insertion in model container [2020-11-07 00:01:30,393 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:01:30" (3/3) ... [2020-11-07 00:01:30,395 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product22.cil.c [2020-11-07 00:01:30,407 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-07 00:01:30,410 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-11-07 00:01:30,420 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-11-07 00:01:30,443 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-07 00:01:30,444 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-07 00:01:30,444 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-11-07 00:01:30,444 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-07 00:01:30,444 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-07 00:01:30,444 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-07 00:01:30,444 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-07 00:01:30,445 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-07 00:01:30,479 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states. [2020-11-07 00:01:30,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-11-07 00:01:30,501 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:01:30,502 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] [2020-11-07 00:01:30,502 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:01:30,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:01:30,509 INFO L82 PathProgramCache]: Analyzing trace with hash 189847074, now seen corresponding path program 1 times [2020-11-07 00:01:30,518 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:01:30,518 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1059504742] [2020-11-07 00:01:30,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:01:30,594 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:01:30,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:01:31,405 WARN L194 SmtUtils]: Spent 447.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-11-07 00:01:31,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:01:31,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:01:31,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-11-07 00:01:31,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:01:31,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-11-07 00:01:31,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:01:31,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-11-07 00:01:31,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:01:31,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-11-07 00:01:31,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:01:31,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-11-07 00:01:31,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:01:31,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-11-07 00:01:31,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:01:31,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-11-07 00:01:31,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:01:31,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 00:01:31,569 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1059504742] [2020-11-07 00:01:31,571 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:01:31,577 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-07 00:01:31,578 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053369098] [2020-11-07 00:01:31,585 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-07 00:01:31,586 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:01:31,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-07 00:01:31,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-07 00:01:31,607 INFO L87 Difference]: Start difference. First operand 319 states. Second operand 3 states. [2020-11-07 00:01:33,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:01:33,401 INFO L93 Difference]: Finished difference Result 496 states and 591 transitions. [2020-11-07 00:01:33,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-07 00:01:33,403 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 159 [2020-11-07 00:01:33,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:01:33,419 INFO L225 Difference]: With dead ends: 496 [2020-11-07 00:01:33,419 INFO L226 Difference]: Without dead ends: 307 [2020-11-07 00:01:33,425 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 [2020-11-07 00:01:33,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2020-11-07 00:01:33,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 265. [2020-11-07 00:01:33,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 265 states. [2020-11-07 00:01:33,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 288 transitions. [2020-11-07 00:01:33,609 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 288 transitions. Word has length 159 [2020-11-07 00:01:33,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:01:33,612 INFO L481 AbstractCegarLoop]: Abstraction has 265 states and 288 transitions. [2020-11-07 00:01:33,612 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-07 00:01:33,612 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 288 transitions. [2020-11-07 00:01:33,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-11-07 00:01:33,624 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:01:33,624 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] [2020-11-07 00:01:33,625 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-07 00:01:33,625 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:01:33,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:01:33,628 INFO L82 PathProgramCache]: Analyzing trace with hash 998665415, now seen corresponding path program 1 times [2020-11-07 00:01:33,628 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:01:33,628 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [19343428] [2020-11-07 00:01:33,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:01:33,635 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:01:33,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:01:34,237 WARN L194 SmtUtils]: Spent 387.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-11-07 00:01:34,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:01:34,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:01:34,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-11-07 00:01:34,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:01:34,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-11-07 00:01:34,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:01:34,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-11-07 00:01:34,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:01:34,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-11-07 00:01:34,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:01:34,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-11-07 00:01:34,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:01:34,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-11-07 00:01:34,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:01:34,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-11-07 00:01:34,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:01:34,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 00:01:34,361 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [19343428] [2020-11-07 00:01:34,361 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:01:34,361 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-07 00:01:34,361 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473547509] [2020-11-07 00:01:34,363 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-07 00:01:34,365 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:01:34,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-07 00:01:34,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-07 00:01:34,366 INFO L87 Difference]: Start difference. First operand 265 states and 288 transitions. Second operand 4 states. [2020-11-07 00:01:35,171 WARN L194 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-11-07 00:01:36,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:01:36,428 INFO L93 Difference]: Finished difference Result 406 states and 458 transitions. [2020-11-07 00:01:36,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-07 00:01:36,430 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 160 [2020-11-07 00:01:36,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:01:36,438 INFO L225 Difference]: With dead ends: 406 [2020-11-07 00:01:36,438 INFO L226 Difference]: Without dead ends: 290 [2020-11-07 00:01:36,446 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-07 00:01:36,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2020-11-07 00:01:36,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 255. [2020-11-07 00:01:36,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255 states. [2020-11-07 00:01:36,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 275 transitions. [2020-11-07 00:01:36,566 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 275 transitions. Word has length 160 [2020-11-07 00:01:36,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:01:36,567 INFO L481 AbstractCegarLoop]: Abstraction has 255 states and 275 transitions. [2020-11-07 00:01:36,567 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-07 00:01:36,567 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 275 transitions. [2020-11-07 00:01:36,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-11-07 00:01:36,570 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:01:36,570 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] [2020-11-07 00:01:36,571 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-07 00:01:36,571 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:01:36,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:01:36,572 INFO L82 PathProgramCache]: Analyzing trace with hash 1140498415, now seen corresponding path program 1 times [2020-11-07 00:01:36,572 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:01:36,572 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1022748437] [2020-11-07 00:01:36,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:01:36,576 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:01:36,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:01:37,019 WARN L194 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-11-07 00:01:37,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:01:37,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:01:37,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-11-07 00:01:37,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:01:37,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-11-07 00:01:37,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:01:37,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-11-07 00:01:37,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:01:37,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-11-07 00:01:37,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:01:37,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-11-07 00:01:37,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:01:37,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-11-07 00:01:37,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:01:37,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-11-07 00:01:37,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:01:37,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-11-07 00:01:37,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:01:37,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 00:01:37,212 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1022748437] [2020-11-07 00:01:37,212 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:01:37,212 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-11-07 00:01:37,212 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365092797] [2020-11-07 00:01:37,213 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-07 00:01:37,213 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:01:37,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-07 00:01:37,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-11-07 00:01:37,214 INFO L87 Difference]: Start difference. First operand 255 states and 275 transitions. Second operand 10 states. [2020-11-07 00:01:37,910 WARN L194 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-11-07 00:01:38,365 WARN L194 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-11-07 00:01:38,750 WARN L194 SmtUtils]: Spent 365.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-11-07 00:01:39,133 WARN L194 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-11-07 00:01:39,518 WARN L194 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-11-07 00:01:39,884 WARN L194 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-11-07 00:01:41,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:01:41,780 INFO L93 Difference]: Finished difference Result 452 states and 520 transitions. [2020-11-07 00:01:41,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-07 00:01:41,781 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 173 [2020-11-07 00:01:41,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:01:41,785 INFO L225 Difference]: With dead ends: 452 [2020-11-07 00:01:41,785 INFO L226 Difference]: Without dead ends: 312 [2020-11-07 00:01:41,787 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-11-07 00:01:41,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2020-11-07 00:01:41,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 255. [2020-11-07 00:01:41,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255 states. [2020-11-07 00:01:41,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 274 transitions. [2020-11-07 00:01:41,892 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 274 transitions. Word has length 173 [2020-11-07 00:01:41,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:01:41,893 INFO L481 AbstractCegarLoop]: Abstraction has 255 states and 274 transitions. [2020-11-07 00:01:41,893 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-07 00:01:41,893 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 274 transitions. [2020-11-07 00:01:41,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2020-11-07 00:01:41,896 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:01:41,896 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] [2020-11-07 00:01:41,896 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-07 00:01:41,896 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:01:41,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:01:41,897 INFO L82 PathProgramCache]: Analyzing trace with hash -1609377999, now seen corresponding path program 1 times [2020-11-07 00:01:41,897 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:01:41,897 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1453121629] [2020-11-07 00:01:41,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:01:41,901 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:01:41,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:01:42,338 WARN L194 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-11-07 00:01:42,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:01:42,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:01:42,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-11-07 00:01:42,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:01:42,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-11-07 00:01:42,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:01:42,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-11-07 00:01:42,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:01:42,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-11-07 00:01:42,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:01:42,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-11-07 00:01:42,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:01:42,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-11-07 00:01:42,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:01:42,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:01:42,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:01:42,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:01:42,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:01:42,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-11-07 00:01:42,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:01:42,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2020-11-07 00:01:42,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:01:42,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-11-07 00:01:42,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:01:42,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 00:01:42,517 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1453121629] [2020-11-07 00:01:42,517 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:01:42,517 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-11-07 00:01:42,517 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513667500] [2020-11-07 00:01:42,518 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-07 00:01:42,518 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:01:42,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-07 00:01:42,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-11-07 00:01:42,519 INFO L87 Difference]: Start difference. First operand 255 states and 274 transitions. Second operand 10 states. [2020-11-07 00:01:43,184 WARN L194 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-11-07 00:01:45,770 WARN L194 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-11-07 00:01:46,249 WARN L194 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-11-07 00:01:46,625 WARN L194 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-11-07 00:01:47,014 WARN L194 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-11-07 00:01:47,390 WARN L194 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-11-07 00:01:48,015 WARN L194 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-11-07 00:01:48,499 WARN L194 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-11-07 00:01:49,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:01:49,287 INFO L93 Difference]: Finished difference Result 696 states and 855 transitions. [2020-11-07 00:01:49,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-11-07 00:01:49,288 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 186 [2020-11-07 00:01:49,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:01:49,293 INFO L225 Difference]: With dead ends: 696 [2020-11-07 00:01:49,294 INFO L226 Difference]: Without dead ends: 556 [2020-11-07 00:01:49,295 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=134, Invalid=328, Unknown=0, NotChecked=0, Total=462 [2020-11-07 00:01:49,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 556 states. [2020-11-07 00:01:49,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 556 to 388. [2020-11-07 00:01:49,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 388 states. [2020-11-07 00:01:49,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 430 transitions. [2020-11-07 00:01:49,474 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 430 transitions. Word has length 186 [2020-11-07 00:01:49,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:01:49,475 INFO L481 AbstractCegarLoop]: Abstraction has 388 states and 430 transitions. [2020-11-07 00:01:49,475 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-07 00:01:49,476 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 430 transitions. [2020-11-07 00:01:49,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2020-11-07 00:01:49,479 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:01:49,479 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] [2020-11-07 00:01:49,479 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-07 00:01:49,480 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:01:49,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:01:49,480 INFO L82 PathProgramCache]: Analyzing trace with hash 145249115, now seen corresponding path program 1 times [2020-11-07 00:01:49,481 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:01:49,481 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [591790676] [2020-11-07 00:01:49,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:01:49,484 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:01:49,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:01:49,866 WARN L194 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-11-07 00:01:49,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:01:49,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:01:49,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-11-07 00:01:49,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:01:49,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-11-07 00:01:49,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:01:49,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-11-07 00:01:49,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:01:49,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-11-07 00:01:49,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:01:49,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-11-07 00:01:49,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:01:49,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-11-07 00:01:49,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:01:49,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-11-07 00:01:49,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:01:49,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:01:49,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:01:49,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:01:49,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:01:49,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-11-07 00:01:49,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:01:49,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2020-11-07 00:01:49,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:01:49,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-11-07 00:01:49,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:01:50,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 00:01:50,030 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [591790676] [2020-11-07 00:01:50,030 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:01:50,030 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-07 00:01:50,030 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692176102] [2020-11-07 00:01:50,031 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-07 00:01:50,031 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:01:50,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-07 00:01:50,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-11-07 00:01:50,032 INFO L87 Difference]: Start difference. First operand 388 states and 430 transitions. Second operand 7 states. [2020-11-07 00:01:50,657 WARN L194 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-11-07 00:01:51,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:01:51,758 INFO L93 Difference]: Finished difference Result 621 states and 725 transitions. [2020-11-07 00:01:51,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-07 00:01:51,763 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 191 [2020-11-07 00:01:51,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:01:51,765 INFO L225 Difference]: With dead ends: 621 [2020-11-07 00:01:51,765 INFO L226 Difference]: Without dead ends: 348 [2020-11-07 00:01:51,767 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2020-11-07 00:01:51,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2020-11-07 00:01:51,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 282. [2020-11-07 00:01:51,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 282 states. [2020-11-07 00:01:51,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 297 transitions. [2020-11-07 00:01:51,860 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 297 transitions. Word has length 191 [2020-11-07 00:01:51,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:01:51,861 INFO L481 AbstractCegarLoop]: Abstraction has 282 states and 297 transitions. [2020-11-07 00:01:51,861 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-07 00:01:51,861 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 297 transitions. [2020-11-07 00:01:51,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2020-11-07 00:01:51,864 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:01:51,864 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] [2020-11-07 00:01:51,864 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-07 00:01:51,865 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:01:51,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:01:51,865 INFO L82 PathProgramCache]: Analyzing trace with hash -203850179, now seen corresponding path program 1 times [2020-11-07 00:01:51,866 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:01:51,866 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1386006515] [2020-11-07 00:01:51,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:01:51,869 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:01:51,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-07 00:01:51,939 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-07 00:01:52,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-07 00:01:52,001 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-07 00:01:52,206 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-11-07 00:01:52,207 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-07 00:01:52,208 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-07 00:01:52,245 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 12:01:52 BoogieIcfgContainer [2020-11-07 00:01:52,245 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-07 00:01:52,249 INFO L168 Benchmark]: Toolchain (without parser) took 24021.80 ms. Allocated memory was 157.3 MB in the beginning and 505.4 MB in the end (delta: 348.1 MB). Free memory was 140.3 MB in the beginning and 363.3 MB in the end (delta: -223.0 MB). Peak memory consumption was 125.1 MB. Max. memory is 8.0 GB. [2020-11-07 00:01:52,250 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 157.3 MB. Free memory is still 130.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-07 00:01:52,255 INFO L168 Benchmark]: CACSL2BoogieTranslator took 621.40 ms. Allocated memory is still 157.3 MB. Free memory was 139.6 MB in the beginning and 133.2 MB in the end (delta: 6.5 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2020-11-07 00:01:52,257 INFO L168 Benchmark]: Boogie Preprocessor took 129.25 ms. Allocated memory is still 157.3 MB. Free memory was 133.2 MB in the beginning and 129.0 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2020-11-07 00:01:52,258 INFO L168 Benchmark]: RCFGBuilder took 1399.53 ms. Allocated memory was 157.3 MB in the beginning and 188.7 MB in the end (delta: 31.5 MB). Free memory was 129.0 MB in the beginning and 104.3 MB in the end (delta: 24.7 MB). Peak memory consumption was 57.2 MB. Max. memory is 8.0 GB. [2020-11-07 00:01:52,258 INFO L168 Benchmark]: TraceAbstraction took 21856.47 ms. Allocated memory was 188.7 MB in the beginning and 505.4 MB in the end (delta: 316.7 MB). Free memory was 103.8 MB in the beginning and 363.3 MB in the end (delta: -259.6 MB). Peak memory consumption was 57.1 MB. Max. memory is 8.0 GB. [2020-11-07 00:01:52,270 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 157.3 MB. Free memory is still 130.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 621.40 ms. Allocated memory is still 157.3 MB. Free memory was 139.6 MB in the beginning and 133.2 MB in the end (delta: 6.5 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 129.25 ms. Allocated memory is still 157.3 MB. Free memory was 133.2 MB in the beginning and 129.0 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1399.53 ms. Allocated memory was 157.3 MB in the beginning and 188.7 MB in the end (delta: 31.5 MB). Free memory was 129.0 MB in the beginning and 104.3 MB in the end (delta: 24.7 MB). Peak memory consumption was 57.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 21856.47 ms. Allocated memory was 188.7 MB in the beginning and 505.4 MB in the end (delta: 316.7 MB). Free memory was 103.8 MB in the beginning and 363.3 MB in the end (delta: -259.6 MB). Peak memory consumption was 57.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_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] CALL reach_error() [L3] __assert_fail("0", "minepump_spec3_product22.cil.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 40 procedures, 638 locations, 5 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 21.7s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 17.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1170 SDtfs, 2250 SDslu, 1489 SDs, 0 SdLazy, 3045 SolverSat, 717 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 8.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 168 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 7.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=388occurred 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...