/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_product39.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 19:57:21,532 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 19:57:21,537 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 19:57:21,585 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 19:57:21,586 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 19:57:21,590 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 19:57:21,593 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 19:57:21,601 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 19:57:21,605 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 19:57:21,610 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 19:57:21,612 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 19:57:21,613 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 19:57:21,613 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 19:57:21,616 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 19:57:21,618 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 19:57:21,620 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 19:57:21,621 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 19:57:21,624 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 19:57:21,636 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 19:57:21,642 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 19:57:21,643 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 19:57:21,646 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 19:57:21,647 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 19:57:21,650 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 19:57:21,656 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-23 19:57:21,656 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-23 19:57:21,657 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-23 19:57:21,661 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-23 19:57:21,662 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-23 19:57:21,663 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-23 19:57:21,664 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-23 19:57:21,665 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-23 19:57:21,667 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-23 19:57:21,668 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-23 19:57:21,669 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-23 19:57:21,669 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-23 19:57:21,670 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-23 19:57:21,670 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-23 19:57:21,671 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 19:57:21,671 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 19:57:21,672 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 19:57:21,673 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-10-23 19:57:21,697 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 19:57:21,697 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 19:57:21,702 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 19:57:21,702 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 19:57:21,702 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 19:57:21,703 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 19:57:21,703 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 19:57:21,703 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 19:57:21,703 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 19:57:21,703 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 19:57:21,704 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 19:57:21,705 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 19:57:21,705 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 19:57:21,705 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 19:57:21,705 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 19:57:21,706 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-23 19:57:21,706 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 19:57:21,706 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 19:57:21,706 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 19:57:21,706 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 19:57:21,707 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-23 19:57:21,707 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 19:57:21,707 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 19:57:22,090 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 19:57:22,140 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 19:57:22,144 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 19:57:22,145 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 19:57:22,146 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 19:57:22,146 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product39.cil.c [2020-10-23 19:57:22,229 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e6b363c6/15f719cf24e042edaaffe244f77926e1/FLAGd0f5f7821 [2020-10-23 19:57:22,895 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 19:57:22,896 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product39.cil.c [2020-10-23 19:57:22,912 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e6b363c6/15f719cf24e042edaaffe244f77926e1/FLAGd0f5f7821 [2020-10-23 19:57:23,207 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e6b363c6/15f719cf24e042edaaffe244f77926e1 [2020-10-23 19:57:23,210 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 19:57:23,218 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 19:57:23,223 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 19:57:23,223 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 19:57:23,228 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 19:57:23,229 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 07:57:23" (1/1) ... [2020-10-23 19:57:23,238 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ba0ad1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:57:23, skipping insertion in model container [2020-10-23 19:57:23,239 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 07:57:23" (1/1) ... [2020-10-23 19:57:23,248 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 19:57:23,322 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 19:57:23,719 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 19:57:23,731 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 19:57:23,810 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 19:57:23,852 INFO L208 MainTranslator]: Completed translation [2020-10-23 19:57:23,852 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:57:23 WrapperNode [2020-10-23 19:57:23,853 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 19:57:23,854 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 19:57:23,854 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 19:57:23,855 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 19:57:23,869 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:57:23" (1/1) ... [2020-10-23 19:57:23,869 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:57:23" (1/1) ... [2020-10-23 19:57:23,887 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:57:23" (1/1) ... [2020-10-23 19:57:23,888 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:57:23" (1/1) ... [2020-10-23 19:57:23,925 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:57:23" (1/1) ... [2020-10-23 19:57:23,935 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:57:23" (1/1) ... [2020-10-23 19:57:23,941 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:57:23" (1/1) ... [2020-10-23 19:57:23,948 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 19:57:23,949 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 19:57:23,950 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 19:57:23,950 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 19:57:23,951 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:57:23" (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 [2020-10-23 19:57:24,078 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 19:57:24,079 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 19:57:24,079 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-10-23 19:57:24,080 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 19:57:24,080 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-10-23 19:57:24,080 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-10-23 19:57:24,080 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-10-23 19:57:24,080 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-10-23 19:57:24,081 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-10-23 19:57:24,081 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-10-23 19:57:24,081 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-10-23 19:57:24,081 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-10-23 19:57:24,082 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-10-23 19:57:24,082 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-10-23 19:57:24,082 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-10-23 19:57:24,082 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-10-23 19:57:24,083 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-10-23 19:57:24,083 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-10-23 19:57:24,083 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-10-23 19:57:24,084 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-10-23 19:57:24,085 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-10-23 19:57:24,085 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-10-23 19:57:24,085 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-10-23 19:57:24,086 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-10-23 19:57:24,086 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-10-23 19:57:24,086 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-10-23 19:57:24,086 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-10-23 19:57:24,086 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-10-23 19:57:24,087 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-10-23 19:57:24,087 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-10-23 19:57:24,087 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-10-23 19:57:24,087 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-10-23 19:57:24,087 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-10-23 19:57:24,087 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-10-23 19:57:24,088 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-10-23 19:57:24,088 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-10-23 19:57:24,088 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-10-23 19:57:24,088 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-10-23 19:57:24,088 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 19:57:24,089 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-10-23 19:57:24,089 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 19:57:24,089 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 19:57:24,089 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 19:57:24,090 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 19:57:24,090 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-23 19:57:24,090 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-10-23 19:57:24,090 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-10-23 19:57:24,090 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-10-23 19:57:24,090 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-10-23 19:57:24,091 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-10-23 19:57:24,091 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-10-23 19:57:24,091 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-10-23 19:57:24,091 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-10-23 19:57:24,091 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-10-23 19:57:24,091 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-10-23 19:57:24,092 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-10-23 19:57:24,092 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-10-23 19:57:24,092 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-10-23 19:57:24,092 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-10-23 19:57:24,092 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-10-23 19:57:24,093 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-10-23 19:57:24,093 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-10-23 19:57:24,093 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-10-23 19:57:24,093 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-10-23 19:57:24,093 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-10-23 19:57:24,093 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-10-23 19:57:24,094 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-10-23 19:57:24,094 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-10-23 19:57:24,094 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-10-23 19:57:24,094 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-10-23 19:57:24,094 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-10-23 19:57:24,094 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-10-23 19:57:24,094 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-23 19:57:24,095 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-23 19:57:24,095 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-10-23 19:57:24,095 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-23 19:57:24,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-23 19:57:24,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 19:57:24,095 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-23 19:57:24,096 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-10-23 19:57:24,096 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 19:57:24,096 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-10-23 19:57:24,096 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-10-23 19:57:24,096 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 19:57:24,097 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-10-23 19:57:24,097 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-10-23 19:57:24,097 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-10-23 19:57:24,097 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-10-23 19:57:24,097 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-10-23 19:57:24,097 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-10-23 19:57:24,097 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 19:57:24,098 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 19:57:24,098 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 19:57:24,098 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 19:57:25,872 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 19:57:25,873 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-23 19:57:25,875 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 07:57:25 BoogieIcfgContainer [2020-10-23 19:57:25,876 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 19:57:25,877 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 19:57:25,878 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 19:57:25,881 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 19:57:25,881 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 07:57:23" (1/3) ... [2020-10-23 19:57:25,882 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f09090c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 07:57:25, skipping insertion in model container [2020-10-23 19:57:25,882 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:57:23" (2/3) ... [2020-10-23 19:57:25,883 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f09090c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 07:57:25, skipping insertion in model container [2020-10-23 19:57:25,883 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 07:57:25" (3/3) ... [2020-10-23 19:57:25,887 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product39.cil.c [2020-10-23 19:57:25,902 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-23 19:57:25,907 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-10-23 19:57:25,918 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-23 19:57:25,941 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 19:57:25,941 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 19:57:25,942 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-10-23 19:57:25,942 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 19:57:25,942 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 19:57:25,942 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 19:57:25,942 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 19:57:25,942 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 19:57:25,965 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states. [2020-10-23 19:57:25,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-10-23 19:57:25,987 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:57:25,988 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] [2020-10-23 19:57:25,989 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]=== [2020-10-23 19:57:25,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:57:25,995 INFO L82 PathProgramCache]: Analyzing trace with hash 133257542, now seen corresponding path program 1 times [2020-10-23 19:57:26,005 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:57:26,005 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1017202328] [2020-10-23 19:57:26,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:57:26,089 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:57:26,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:57:27,198 WARN L193 SmtUtils]: Spent 659.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 19:57:27,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:57:27,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:57:27,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 19:57:27,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:57:27,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 19:57:27,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:57:27,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 19:57:27,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:57:27,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 19:57:27,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:57:27,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-23 19:57:27,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:57:27,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-10-23 19:57:27,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:57:27,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-10-23 19:57:27,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:57:27,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 19:57:27,412 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1017202328] [2020-10-23 19:57:27,415 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:57:27,422 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-23 19:57:27,423 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726671099] [2020-10-23 19:57:27,430 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-23 19:57:27,431 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:57:27,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-23 19:57:27,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-23 19:57:27,453 INFO L87 Difference]: Start difference. First operand 327 states. Second operand 3 states. [2020-10-23 19:57:30,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:57:30,577 INFO L93 Difference]: Finished difference Result 513 states and 612 transitions. [2020-10-23 19:57:30,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-23 19:57:30,579 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 159 [2020-10-23 19:57:30,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:57:30,616 INFO L225 Difference]: With dead ends: 513 [2020-10-23 19:57:30,616 INFO L226 Difference]: Without dead ends: 316 [2020-10-23 19:57:30,630 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-23 19:57:30,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2020-10-23 19:57:30,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 273. [2020-10-23 19:57:30,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 273 states. [2020-10-23 19:57:30,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 298 transitions. [2020-10-23 19:57:30,842 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 298 transitions. Word has length 159 [2020-10-23 19:57:30,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:57:30,844 INFO L481 AbstractCegarLoop]: Abstraction has 273 states and 298 transitions. [2020-10-23 19:57:30,844 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-23 19:57:30,844 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 298 transitions. [2020-10-23 19:57:30,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-23 19:57:30,850 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:57:30,850 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] [2020-10-23 19:57:30,851 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 19:57:30,851 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]=== [2020-10-23 19:57:30,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:57:30,852 INFO L82 PathProgramCache]: Analyzing trace with hash -1164170780, now seen corresponding path program 1 times [2020-10-23 19:57:30,852 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:57:30,852 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1376388342] [2020-10-23 19:57:30,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:57:30,857 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:57:30,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:57:31,775 WARN L193 SmtUtils]: Spent 743.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 19:57:31,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:57:31,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:57:31,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 19:57:31,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:57:31,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 19:57:31,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:57:31,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 19:57:31,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:57:31,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 19:57:31,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:57:31,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-23 19:57:31,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:57:31,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-23 19:57:31,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:57:31,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-10-23 19:57:31,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:57:31,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 19:57:31,897 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1376388342] [2020-10-23 19:57:31,897 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:57:31,898 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-23 19:57:31,898 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818062665] [2020-10-23 19:57:31,899 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-23 19:57:31,900 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:57:31,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-23 19:57:31,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-23 19:57:31,901 INFO L87 Difference]: Start difference. First operand 273 states and 298 transitions. Second operand 4 states. [2020-10-23 19:57:33,490 WARN L193 SmtUtils]: Spent 842.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:57:35,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:57:35,664 INFO L93 Difference]: Finished difference Result 421 states and 475 transitions. [2020-10-23 19:57:35,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-23 19:57:35,668 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 160 [2020-10-23 19:57:35,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:57:35,673 INFO L225 Difference]: With dead ends: 421 [2020-10-23 19:57:35,673 INFO L226 Difference]: Without dead ends: 299 [2020-10-23 19:57:35,675 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-23 19:57:35,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2020-10-23 19:57:35,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 263. [2020-10-23 19:57:35,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 263 states. [2020-10-23 19:57:35,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 285 transitions. [2020-10-23 19:57:35,794 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 285 transitions. Word has length 160 [2020-10-23 19:57:35,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:57:35,794 INFO L481 AbstractCegarLoop]: Abstraction has 263 states and 285 transitions. [2020-10-23 19:57:35,795 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-23 19:57:35,795 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 285 transitions. [2020-10-23 19:57:35,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-10-23 19:57:35,798 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:57:35,798 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] [2020-10-23 19:57:35,798 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 19:57:35,799 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]=== [2020-10-23 19:57:35,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:57:35,799 INFO L82 PathProgramCache]: Analyzing trace with hash 775445239, now seen corresponding path program 1 times [2020-10-23 19:57:35,799 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:57:35,800 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [249209399] [2020-10-23 19:57:35,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:57:35,803 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:57:35,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:57:36,701 WARN L193 SmtUtils]: Spent 744.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 19:57:36,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:57:36,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:57:36,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 19:57:36,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:57:36,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 19:57:36,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:57:36,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 19:57:36,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:57:36,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 19:57:36,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:57:36,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-10-23 19:57:36,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:57:36,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-10-23 19:57:36,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:57:36,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-10-23 19:57:36,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:57:36,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 19:57:36,967 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [249209399] [2020-10-23 19:57:36,968 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:57:36,968 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-23 19:57:36,968 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931065501] [2020-10-23 19:57:36,969 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-23 19:57:36,969 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:57:36,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-23 19:57:36,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-23 19:57:36,972 INFO L87 Difference]: Start difference. First operand 263 states and 285 transitions. Second operand 9 states. [2020-10-23 19:57:38,116 WARN L193 SmtUtils]: Spent 720.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-23 19:57:39,130 WARN L193 SmtUtils]: Spent 799.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:57:39,959 WARN L193 SmtUtils]: Spent 795.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:57:40,833 WARN L193 SmtUtils]: Spent 802.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:57:41,630 WARN L193 SmtUtils]: Spent 753.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:57:42,440 WARN L193 SmtUtils]: Spent 775.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:57:44,489 WARN L193 SmtUtils]: Spent 736.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:57:49,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:57:49,302 INFO L93 Difference]: Finished difference Result 702 states and 809 transitions. [2020-10-23 19:57:49,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-23 19:57:49,303 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 169 [2020-10-23 19:57:49,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:57:49,308 INFO L225 Difference]: With dead ends: 702 [2020-10-23 19:57:49,309 INFO L226 Difference]: Without dead ends: 554 [2020-10-23 19:57:49,311 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2020-10-23 19:57:49,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 554 states. [2020-10-23 19:57:49,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 554 to 485. [2020-10-23 19:57:49,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 485 states. [2020-10-23 19:57:49,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 485 states to 485 states and 544 transitions. [2020-10-23 19:57:49,593 INFO L78 Accepts]: Start accepts. Automaton has 485 states and 544 transitions. Word has length 169 [2020-10-23 19:57:49,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:57:49,595 INFO L481 AbstractCegarLoop]: Abstraction has 485 states and 544 transitions. [2020-10-23 19:57:49,595 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-23 19:57:49,595 INFO L276 IsEmpty]: Start isEmpty. Operand 485 states and 544 transitions. [2020-10-23 19:57:49,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-10-23 19:57:49,600 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:57:49,600 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] [2020-10-23 19:57:49,601 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-23 19:57:49,602 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]=== [2020-10-23 19:57:49,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:57:49,603 INFO L82 PathProgramCache]: Analyzing trace with hash 941449922, now seen corresponding path program 1 times [2020-10-23 19:57:49,603 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:57:49,604 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1142236549] [2020-10-23 19:57:49,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:57:49,611 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:57:49,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:57:50,441 WARN L193 SmtUtils]: Spent 671.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 19:57:50,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:57:50,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:57:50,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 19:57:50,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:57:50,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 19:57:50,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:57:50,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 19:57:50,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:57:50,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 19:57:50,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:57:50,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-23 19:57:50,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:57:50,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-10-23 19:57:50,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:57:50,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-23 19:57:50,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:57:50,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2020-10-23 19:57:50,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:57:50,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 19:57:50,627 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1142236549] [2020-10-23 19:57:50,628 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:57:50,628 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-23 19:57:50,628 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679532933] [2020-10-23 19:57:50,629 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-23 19:57:50,629 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:57:50,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-23 19:57:50,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-23 19:57:50,630 INFO L87 Difference]: Start difference. First operand 485 states and 544 transitions. Second operand 9 states. [2020-10-23 19:57:51,817 WARN L193 SmtUtils]: Spent 767.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-23 19:57:55,810 WARN L193 SmtUtils]: Spent 732.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:57:56,651 WARN L193 SmtUtils]: Spent 759.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:57:57,529 WARN L193 SmtUtils]: Spent 747.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:57:58,458 WARN L193 SmtUtils]: Spent 700.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-23 19:57:59,221 WARN L193 SmtUtils]: Spent 732.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:58:00,024 WARN L193 SmtUtils]: Spent 746.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:58:00,840 WARN L193 SmtUtils]: Spent 781.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:58:02,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:58:02,515 INFO L93 Difference]: Finished difference Result 1303 states and 1574 transitions. [2020-10-23 19:58:02,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-23 19:58:02,523 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 178 [2020-10-23 19:58:02,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:58:02,531 INFO L225 Difference]: With dead ends: 1303 [2020-10-23 19:58:02,531 INFO L226 Difference]: Without dead ends: 933 [2020-10-23 19:58:02,533 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-10-23 19:58:02,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 933 states. [2020-10-23 19:58:02,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 933 to 833. [2020-10-23 19:58:02,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 833 states. [2020-10-23 19:58:02,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 833 states to 833 states and 959 transitions. [2020-10-23 19:58:02,889 INFO L78 Accepts]: Start accepts. Automaton has 833 states and 959 transitions. Word has length 178 [2020-10-23 19:58:02,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:58:02,890 INFO L481 AbstractCegarLoop]: Abstraction has 833 states and 959 transitions. [2020-10-23 19:58:02,890 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-23 19:58:02,891 INFO L276 IsEmpty]: Start isEmpty. Operand 833 states and 959 transitions. [2020-10-23 19:58:02,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2020-10-23 19:58:02,896 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:58:02,896 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] [2020-10-23 19:58:02,896 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-23 19:58:02,897 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]=== [2020-10-23 19:58:02,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:58:02,898 INFO L82 PathProgramCache]: Analyzing trace with hash 481233879, now seen corresponding path program 1 times [2020-10-23 19:58:02,898 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:58:02,898 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1708416926] [2020-10-23 19:58:02,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:58:02,902 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:58:02,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:03,628 WARN L193 SmtUtils]: Spent 642.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 19:58:03,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:58:03,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:03,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 19:58:03,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:03,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 19:58:03,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:03,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 19:58:03,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:03,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 19:58:03,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:03,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-23 19:58:03,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:03,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-23 19:58:03,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:03,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-10-23 19:58:03,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:03,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-10-23 19:58:03,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:03,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-10-23 19:58:03,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:03,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 19:58:03,802 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1708416926] [2020-10-23 19:58:03,802 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:58:03,802 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-23 19:58:03,802 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809812951] [2020-10-23 19:58:03,803 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-23 19:58:03,803 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:58:03,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-23 19:58:03,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-23 19:58:03,807 INFO L87 Difference]: Start difference. First operand 833 states and 959 transitions. Second operand 6 states. [2020-10-23 19:58:04,845 WARN L193 SmtUtils]: Spent 622.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-23 19:58:08,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:58:08,241 INFO L93 Difference]: Finished difference Result 1898 states and 2292 transitions. [2020-10-23 19:58:08,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-23 19:58:08,242 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 183 [2020-10-23 19:58:08,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:58:08,251 INFO L225 Difference]: With dead ends: 1898 [2020-10-23 19:58:08,251 INFO L226 Difference]: Without dead ends: 1180 [2020-10-23 19:58:08,254 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-10-23 19:58:08,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1180 states. [2020-10-23 19:58:08,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1180 to 1082. [2020-10-23 19:58:08,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1082 states. [2020-10-23 19:58:08,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1082 states to 1082 states and 1237 transitions. [2020-10-23 19:58:08,741 INFO L78 Accepts]: Start accepts. Automaton has 1082 states and 1237 transitions. Word has length 183 [2020-10-23 19:58:08,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:58:08,742 INFO L481 AbstractCegarLoop]: Abstraction has 1082 states and 1237 transitions. [2020-10-23 19:58:08,742 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-23 19:58:08,742 INFO L276 IsEmpty]: Start isEmpty. Operand 1082 states and 1237 transitions. [2020-10-23 19:58:08,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2020-10-23 19:58:08,746 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:58:08,746 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] [2020-10-23 19:58:08,747 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-23 19:58:08,747 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]=== [2020-10-23 19:58:08,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:58:08,748 INFO L82 PathProgramCache]: Analyzing trace with hash -1240405268, now seen corresponding path program 1 times [2020-10-23 19:58:08,748 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:58:08,748 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1793497379] [2020-10-23 19:58:08,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:58:08,751 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:58:08,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 19:58:08,826 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 19:58:08,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 19:58:08,900 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 19:58:09,089 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-23 19:58:09,090 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-23 19:58:09,091 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-23 19:58:09,116 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 07:58:09 BoogieIcfgContainer [2020-10-23 19:58:09,116 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 19:58:09,118 INFO L168 Benchmark]: Toolchain (without parser) took 45905.71 ms. Allocated memory was 151.0 MB in the beginning and 395.3 MB in the end (delta: 244.3 MB). Free memory was 125.8 MB in the beginning and 215.7 MB in the end (delta: -89.9 MB). Peak memory consumption was 155.4 MB. Max. memory is 8.0 GB. [2020-10-23 19:58:09,119 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 151.0 MB. Free memory is still 125.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 19:58:09,120 INFO L168 Benchmark]: CACSL2BoogieTranslator took 630.30 ms. Allocated memory is still 151.0 MB. Free memory was 125.2 MB in the beginning and 104.0 MB in the end (delta: 21.2 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2020-10-23 19:58:09,121 INFO L168 Benchmark]: Boogie Preprocessor took 94.41 ms. Allocated memory is still 151.0 MB. Free memory was 104.0 MB in the beginning and 100.2 MB in the end (delta: 3.8 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-10-23 19:58:09,122 INFO L168 Benchmark]: RCFGBuilder took 1926.33 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 100.2 MB in the beginning and 112.3 MB in the end (delta: -12.2 MB). Peak memory consumption was 26.0 MB. Max. memory is 8.0 GB. [2020-10-23 19:58:09,122 INFO L168 Benchmark]: TraceAbstraction took 43239.02 ms. Allocated memory was 181.4 MB in the beginning and 395.3 MB in the end (delta: 213.9 MB). Free memory was 111.8 MB in the beginning and 215.7 MB in the end (delta: -103.9 MB). Peak memory consumption was 110.6 MB. Max. memory is 8.0 GB. [2020-10-23 19:58:09,126 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 151.0 MB. Free memory is still 125.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 630.30 ms. Allocated memory is still 151.0 MB. Free memory was 125.2 MB in the beginning and 104.0 MB in the end (delta: 21.2 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 94.41 ms. Allocated memory is still 151.0 MB. Free memory was 104.0 MB in the beginning and 100.2 MB in the end (delta: 3.8 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1926.33 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 100.2 MB in the beginning and 112.3 MB in the end (delta: -12.2 MB). Peak memory consumption was 26.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 43239.02 ms. Allocated memory was 181.4 MB in the beginning and 395.3 MB in the end (delta: 213.9 MB). Free memory was 111.8 MB in the beginning and 215.7 MB in the end (delta: -103.9 MB). Peak memory consumption was 110.6 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: [L87] int waterLevel = 1; [L88] int methaneLevelCritical = 0; [L187] int pumpRunning = 0; [L188] int systemActive = 1; [L627] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L824] int cleanupTimeShifts = 4; [L897] int retValue_acc ; [L898] int tmp ; [L902] FCALL select_helpers() [L903] FCALL select_features() [L904] CALL, EXPR valid_product() [L71] int retValue_acc ; [L74] retValue_acc = 1 [L75] return (retValue_acc); [L904] RET, EXPR valid_product() [L904] tmp = valid_product() [L906] COND TRUE \read(tmp) [L908] FCALL setup() [L909] CALL runTest() [L891] CALL test() [L383] int splverifierCounter ; [L384] int tmp ; [L385] int tmp___0 ; [L386] int tmp___1 ; [L387] int tmp___2 ; [L390] splverifierCounter = 0 [L392] COND TRUE 1 [L394] COND TRUE splverifierCounter < 4 [L400] tmp = __VERIFIER_nondet_int() [L402] COND TRUE \read(tmp) [L404] CALL waterRise() [L105] COND TRUE waterLevel < 2 [L106] waterLevel = waterLevel + 1 [L404] RET waterRise() [L410] tmp___0 = __VERIFIER_nondet_int() [L412] COND FALSE !(\read(tmp___0)) [L420] tmp___2 = __VERIFIER_nondet_int() [L422] COND FALSE !(\read(tmp___2)) [L426] tmp___1 = __VERIFIER_nondet_int() [L428] COND TRUE \read(tmp___1) [L430] CALL stopSystem() [L369] COND FALSE !(\read(pumpRunning)) [L376] systemActive = 0 [L430] RET stopSystem() [L437] CALL timeShift() [L195] COND FALSE !(\read(pumpRunning)) [L202] COND FALSE !(\read(systemActive)) [L210] CALL __utac_acc__Specification3_spec__1() [L921] int tmp ; [L922] int tmp___0 ; [L923] int tmp___1 ; [L927] CALL, EXPR isMethaneLevelCritical() [L126] int retValue_acc ; [L129] retValue_acc = methaneLevelCritical [L130] return (retValue_acc); [L927] RET, EXPR isMethaneLevelCritical() [L927] tmp = isMethaneLevelCritical() [L929] COND FALSE !(\read(tmp)) [L933] CALL, EXPR getWaterLevel() [L158] int retValue_acc ; [L161] retValue_acc = waterLevel [L162] return (retValue_acc); [L933] RET, EXPR getWaterLevel() [L933] tmp___0 = getWaterLevel() [L935] COND TRUE tmp___0 == 2 [L937] CALL, EXPR isPumpRunning() [L302] int retValue_acc ; [L305] retValue_acc = pumpRunning [L306] return (retValue_acc); [L937] RET, EXPR isPumpRunning() [L937] tmp___1 = isPumpRunning() [L939] COND FALSE !(\read(tmp___1)) [L943] CALL __automaton_fail() [L453] CALL reach_error() [L3] __assert_fail("0", "minepump_spec3_product39.cil.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 40 procedures, 643 locations, 5 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 43.1s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 35.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1294 SDtfs, 2418 SDslu, 1620 SDs, 0 SdLazy, 3680 SolverSat, 857 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 17.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 148 GetRequests, 104 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 17.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1082occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.4s AutomataMinimizationTime, 5 MinimizatonAttempts, 346 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...