/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_product21.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 19:56:37,747 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 19:56:37,750 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 19:56:37,791 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 19:56:37,792 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 19:56:37,793 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 19:56:37,795 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 19:56:37,797 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 19:56:37,800 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 19:56:37,801 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 19:56:37,802 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 19:56:37,803 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 19:56:37,804 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 19:56:37,806 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 19:56:37,807 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 19:56:37,809 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 19:56:37,810 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 19:56:37,831 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 19:56:37,837 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 19:56:37,843 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 19:56:37,846 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 19:56:37,851 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 19:56:37,853 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 19:56:37,854 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 19:56:37,857 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-23 19:56:37,858 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-23 19:56:37,858 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-23 19:56:37,859 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-23 19:56:37,860 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-23 19:56:37,861 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-23 19:56:37,862 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-23 19:56:37,863 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-23 19:56:37,864 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-23 19:56:37,865 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-23 19:56:37,866 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-23 19:56:37,866 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-23 19:56:37,867 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-23 19:56:37,868 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-23 19:56:37,868 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 19:56:37,869 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 19:56:37,870 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 19:56:37,871 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 19:56:37,883 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 19:56:37,884 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 19:56:37,885 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 19:56:37,886 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 19:56:37,886 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 19:56:37,886 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 19:56:37,886 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 19:56:37,887 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 19:56:37,887 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 19:56:37,887 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 19:56:37,888 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 19:56:37,888 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 19:56:37,888 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 19:56:37,888 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 19:56:37,889 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 19:56:37,889 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-23 19:56:37,889 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 19:56:37,889 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 19:56:37,890 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 19:56:37,890 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 19:56:37,890 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-23 19:56:37,891 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 19:56:37,891 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 19:56:38,285 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 19:56:38,329 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 19:56:38,332 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 19:56:38,333 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 19:56:38,334 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 19:56:38,335 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product21.cil.c [2020-10-23 19:56:38,405 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e7ce3c5a/1d75c42d5e0f41688540cdae1896f669/FLAGabce9c169 [2020-10-23 19:56:39,005 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 19:56:39,005 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product21.cil.c [2020-10-23 19:56:39,019 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e7ce3c5a/1d75c42d5e0f41688540cdae1896f669/FLAGabce9c169 [2020-10-23 19:56:39,337 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e7ce3c5a/1d75c42d5e0f41688540cdae1896f669 [2020-10-23 19:56:39,340 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 19:56:39,347 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 19:56:39,351 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 19:56:39,351 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 19:56:39,356 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 19:56:39,357 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 07:56:39" (1/1) ... [2020-10-23 19:56:39,360 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53853617 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:56:39, skipping insertion in model container [2020-10-23 19:56:39,361 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 07:56:39" (1/1) ... [2020-10-23 19:56:39,370 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 19:56:39,449 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 19:56:39,826 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 19:56:39,848 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 19:56:39,997 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 19:56:40,048 INFO L208 MainTranslator]: Completed translation [2020-10-23 19:56:40,048 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:56:40 WrapperNode [2020-10-23 19:56:40,048 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 19:56:40,049 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 19:56:40,049 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 19:56:40,049 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 19:56:40,061 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:56:40" (1/1) ... [2020-10-23 19:56:40,061 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:56:40" (1/1) ... [2020-10-23 19:56:40,106 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:56:40" (1/1) ... [2020-10-23 19:56:40,107 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:56:40" (1/1) ... [2020-10-23 19:56:40,160 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:56:40" (1/1) ... [2020-10-23 19:56:40,177 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:56:40" (1/1) ... [2020-10-23 19:56:40,187 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:56:40" (1/1) ... [2020-10-23 19:56:40,205 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 19:56:40,206 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 19:56:40,206 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 19:56:40,206 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 19:56:40,207 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:56:40" (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 19:56:40,299 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 19:56:40,299 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 19:56:40,300 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-10-23 19:56:40,300 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 19:56:40,300 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-10-23 19:56:40,300 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-10-23 19:56:40,300 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-10-23 19:56:40,300 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-10-23 19:56:40,301 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-10-23 19:56:40,301 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-10-23 19:56:40,301 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-10-23 19:56:40,301 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-10-23 19:56:40,301 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-10-23 19:56:40,301 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-10-23 19:56:40,301 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-10-23 19:56:40,302 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-10-23 19:56:40,302 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-10-23 19:56:40,302 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-10-23 19:56:40,302 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-10-23 19:56:40,302 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-10-23 19:56:40,302 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-10-23 19:56:40,303 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-10-23 19:56:40,303 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-10-23 19:56:40,303 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-10-23 19:56:40,303 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-10-23 19:56:40,303 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-10-23 19:56:40,303 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-10-23 19:56:40,304 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-10-23 19:56:40,304 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-10-23 19:56:40,304 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-10-23 19:56:40,304 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-10-23 19:56:40,304 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-10-23 19:56:40,304 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-10-23 19:56:40,305 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 19:56:40,305 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-10-23 19:56:40,305 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-10-23 19:56:40,305 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-10-23 19:56:40,305 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-10-23 19:56:40,305 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-10-23 19:56:40,306 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 19:56:40,306 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 19:56:40,306 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 19:56:40,306 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 19:56:40,306 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-23 19:56:40,306 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-10-23 19:56:40,307 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-23 19:56:40,307 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-23 19:56:40,307 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-10-23 19:56:40,307 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-23 19:56:40,307 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-23 19:56:40,307 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 19:56:40,307 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-23 19:56:40,308 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-10-23 19:56:40,308 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 19:56:40,308 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-10-23 19:56:40,308 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-10-23 19:56:40,308 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 19:56:40,308 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-10-23 19:56:40,308 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-10-23 19:56:40,309 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-10-23 19:56:40,309 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-10-23 19:56:40,309 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-10-23 19:56:40,309 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-10-23 19:56:40,309 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-10-23 19:56:40,310 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-10-23 19:56:40,310 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-10-23 19:56:40,310 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-10-23 19:56:40,310 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-10-23 19:56:40,310 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-10-23 19:56:40,310 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-10-23 19:56:40,310 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-10-23 19:56:40,311 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-10-23 19:56:40,311 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-10-23 19:56:40,311 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-10-23 19:56:40,311 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-10-23 19:56:40,311 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-10-23 19:56:40,311 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-10-23 19:56:40,312 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-10-23 19:56:40,312 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-10-23 19:56:40,312 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-10-23 19:56:40,312 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-10-23 19:56:40,312 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-10-23 19:56:40,312 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-10-23 19:56:40,312 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-10-23 19:56:40,313 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-10-23 19:56:40,313 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-10-23 19:56:40,313 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-10-23 19:56:40,313 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 19:56:40,313 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-10-23 19:56:40,313 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 19:56:40,314 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 19:56:40,314 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 19:56:41,706 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 19:56:41,707 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-23 19:56:41,709 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 07:56:41 BoogieIcfgContainer [2020-10-23 19:56:41,710 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 19:56:41,711 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 19:56:41,711 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 19:56:41,715 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 19:56:41,715 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 07:56:39" (1/3) ... [2020-10-23 19:56:41,716 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46ad504e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 07:56:41, skipping insertion in model container [2020-10-23 19:56:41,716 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:56:40" (2/3) ... [2020-10-23 19:56:41,717 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46ad504e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 07:56:41, skipping insertion in model container [2020-10-23 19:56:41,717 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 07:56:41" (3/3) ... [2020-10-23 19:56:41,718 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product21.cil.c [2020-10-23 19:56:41,730 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-23 19:56:41,736 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-10-23 19:56:41,750 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-23 19:56:41,773 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 19:56:41,774 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 19:56:41,774 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-10-23 19:56:41,774 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 19:56:41,774 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 19:56:41,774 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 19:56:41,774 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 19:56:41,775 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 19:56:41,797 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states. [2020-10-23 19:56:41,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-10-23 19:56:41,824 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:56:41,825 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 19:56:41,825 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 19:56:41,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:56:41,832 INFO L82 PathProgramCache]: Analyzing trace with hash 1593718141, now seen corresponding path program 1 times [2020-10-23 19:56:41,842 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:56:41,842 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1155919393] [2020-10-23 19:56:41,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:56:41,918 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:56:42,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:42,684 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 19:56:42,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:56:42,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:42,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 19:56:42,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:42,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 19:56:42,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:42,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 19:56:42,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:42,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 19:56:42,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:42,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-23 19:56:42,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:42,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-10-23 19:56:42,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:42,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-10-23 19:56:42,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:42,855 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 19:56:42,857 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1155919393] [2020-10-23 19:56:42,859 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:56:42,859 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-23 19:56:42,860 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480671732] [2020-10-23 19:56:42,866 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-23 19:56:42,866 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:56:42,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-23 19:56:42,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-23 19:56:42,883 INFO L87 Difference]: Start difference. First operand 315 states. Second operand 3 states. [2020-10-23 19:56:44,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:56:44,550 INFO L93 Difference]: Finished difference Result 487 states and 581 transitions. [2020-10-23 19:56:44,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-23 19:56:44,552 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 159 [2020-10-23 19:56:44,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:56:44,569 INFO L225 Difference]: With dead ends: 487 [2020-10-23 19:56:44,570 INFO L226 Difference]: Without dead ends: 302 [2020-10-23 19:56:44,575 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-23 19:56:44,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2020-10-23 19:56:44,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 261. [2020-10-23 19:56:44,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-23 19:56:44,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 284 transitions. [2020-10-23 19:56:44,778 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 284 transitions. Word has length 159 [2020-10-23 19:56:44,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:56:44,779 INFO L481 AbstractCegarLoop]: Abstraction has 261 states and 284 transitions. [2020-10-23 19:56:44,779 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-23 19:56:44,780 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 284 transitions. [2020-10-23 19:56:44,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-23 19:56:44,785 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:56:44,786 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 19:56:44,786 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 19:56:44,787 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 19:56:44,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:56:44,788 INFO L82 PathProgramCache]: Analyzing trace with hash 1753173193, now seen corresponding path program 1 times [2020-10-23 19:56:44,788 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:56:44,788 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [824206546] [2020-10-23 19:56:44,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:56:44,793 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:56:44,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:45,302 WARN L193 SmtUtils]: Spent 365.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 19:56:45,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:56:45,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:45,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 19:56:45,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:45,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 19:56:45,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:45,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 19:56:45,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:45,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 19:56:45,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:45,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-23 19:56:45,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:45,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-23 19:56:45,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:45,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-10-23 19:56:45,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:45,438 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 19:56:45,439 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [824206546] [2020-10-23 19:56:45,439 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:56:45,440 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-23 19:56:45,440 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588830985] [2020-10-23 19:56:45,441 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-23 19:56:45,441 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:56:45,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-23 19:56:45,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-23 19:56:45,442 INFO L87 Difference]: Start difference. First operand 261 states and 284 transitions. Second operand 4 states. [2020-10-23 19:56:46,274 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:56:47,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:56:47,419 INFO L93 Difference]: Finished difference Result 401 states and 452 transitions. [2020-10-23 19:56:47,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-23 19:56:47,420 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 160 [2020-10-23 19:56:47,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:56:47,425 INFO L225 Difference]: With dead ends: 401 [2020-10-23 19:56:47,425 INFO L226 Difference]: Without dead ends: 285 [2020-10-23 19:56:47,427 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 [2020-10-23 19:56:47,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2020-10-23 19:56:47,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 251. [2020-10-23 19:56:47,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 251 states. [2020-10-23 19:56:47,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 271 transitions. [2020-10-23 19:56:47,562 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 271 transitions. Word has length 160 [2020-10-23 19:56:47,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:56:47,563 INFO L481 AbstractCegarLoop]: Abstraction has 251 states and 271 transitions. [2020-10-23 19:56:47,563 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-23 19:56:47,563 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 271 transitions. [2020-10-23 19:56:47,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-10-23 19:56:47,566 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:56:47,567 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 19:56:47,567 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 19:56:47,567 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 19:56:47,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:56:47,568 INFO L82 PathProgramCache]: Analyzing trace with hash 1576076430, now seen corresponding path program 1 times [2020-10-23 19:56:47,568 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:56:47,569 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [91601980] [2020-10-23 19:56:47,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:56:47,573 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:56:47,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:48,245 WARN L193 SmtUtils]: Spent 474.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 19:56:48,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:56:48,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:48,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 19:56:48,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:48,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 19:56:48,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:48,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 19:56:48,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:48,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 19:56:48,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:48,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-10-23 19:56:48,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:48,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-10-23 19:56:48,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:48,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-10-23 19:56:48,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:48,542 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 19:56:48,544 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [91601980] [2020-10-23 19:56:48,544 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:56:48,545 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-23 19:56:48,545 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044526496] [2020-10-23 19:56:48,546 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-23 19:56:48,546 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:56:48,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-23 19:56:48,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-23 19:56:48,547 INFO L87 Difference]: Start difference. First operand 251 states and 271 transitions. Second operand 9 states. [2020-10-23 19:56:49,254 WARN L193 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-23 19:56:49,788 WARN L193 SmtUtils]: Spent 385.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:56:50,220 WARN L193 SmtUtils]: Spent 396.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:56:50,642 WARN L193 SmtUtils]: Spent 371.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:56:51,081 WARN L193 SmtUtils]: Spent 395.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:56:51,499 WARN L193 SmtUtils]: Spent 382.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:56:53,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:56:53,511 INFO L93 Difference]: Finished difference Result 421 states and 477 transitions. [2020-10-23 19:56:53,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-23 19:56:53,514 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 169 [2020-10-23 19:56:53,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:56:53,518 INFO L225 Difference]: With dead ends: 421 [2020-10-23 19:56:53,518 INFO L226 Difference]: Without dead ends: 285 [2020-10-23 19:56:53,520 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2020-10-23 19:56:53,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2020-10-23 19:56:53,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 251. [2020-10-23 19:56:53,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 251 states. [2020-10-23 19:56:53,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 270 transitions. [2020-10-23 19:56:53,623 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 270 transitions. Word has length 169 [2020-10-23 19:56:53,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:56:53,624 INFO L481 AbstractCegarLoop]: Abstraction has 251 states and 270 transitions. [2020-10-23 19:56:53,624 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-23 19:56:53,624 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 270 transitions. [2020-10-23 19:56:53,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-10-23 19:56:53,627 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:56:53,627 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] [2020-10-23 19:56:53,628 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-23 19:56:53,628 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 19:56:53,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:56:53,628 INFO L82 PathProgramCache]: Analyzing trace with hash 244413631, now seen corresponding path program 1 times [2020-10-23 19:56:53,629 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:56:53,629 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [60988933] [2020-10-23 19:56:53,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:56:53,633 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:56:53,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:54,077 WARN L193 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 19:56:54,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:56:54,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:54,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 19:56:54,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:54,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 19:56:54,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:54,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 19:56:54,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:54,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 19:56:54,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:54,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-10-23 19:56:54,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:54,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:56:54,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:54,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:56:54,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:54,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-23 19:56:54,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:54,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-10-23 19:56:54,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:54,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-10-23 19:56:54,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:54,290 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 19:56:54,290 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [60988933] [2020-10-23 19:56:54,291 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:56:54,291 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-23 19:56:54,291 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320349505] [2020-10-23 19:56:54,292 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-23 19:56:54,292 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:56:54,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-23 19:56:54,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-23 19:56:54,293 INFO L87 Difference]: Start difference. First operand 251 states and 270 transitions. Second operand 9 states. [2020-10-23 19:56:55,009 WARN L193 SmtUtils]: Spent 374.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-23 19:56:57,805 WARN L193 SmtUtils]: Spent 376.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:56:58,281 WARN L193 SmtUtils]: Spent 387.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:56:58,711 WARN L193 SmtUtils]: Spent 369.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:56:59,131 WARN L193 SmtUtils]: Spent 385.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:56:59,541 WARN L193 SmtUtils]: Spent 383.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:57:00,162 WARN L193 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-23 19:57:00,632 WARN L193 SmtUtils]: Spent 371.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:57:01,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:57:01,078 INFO L93 Difference]: Finished difference Result 593 states and 701 transitions. [2020-10-23 19:57:01,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-23 19:57:01,078 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 182 [2020-10-23 19:57:01,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:57:01,084 INFO L225 Difference]: With dead ends: 593 [2020-10-23 19:57:01,085 INFO L226 Difference]: Without dead ends: 457 [2020-10-23 19:57:01,086 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-10-23 19:57:01,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states. [2020-10-23 19:57:01,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 380. [2020-10-23 19:57:01,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 380 states. [2020-10-23 19:57:01,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 422 transitions. [2020-10-23 19:57:01,279 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 422 transitions. Word has length 182 [2020-10-23 19:57:01,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:57:01,279 INFO L481 AbstractCegarLoop]: Abstraction has 380 states and 422 transitions. [2020-10-23 19:57:01,280 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-23 19:57:01,280 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 422 transitions. [2020-10-23 19:57:01,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-10-23 19:57:01,285 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:57:01,285 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] [2020-10-23 19:57:01,285 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-23 19:57:01,286 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 19:57:01,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:57:01,287 INFO L82 PathProgramCache]: Analyzing trace with hash -1840000430, now seen corresponding path program 1 times [2020-10-23 19:57:01,287 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:57:01,288 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [282519904] [2020-10-23 19:57:01,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:57:01,293 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:57:01,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:57:01,748 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 19:57:01,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:57:01,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:57:01,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 19:57:01,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:57:01,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 19:57:01,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:57:01,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 19:57:01,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:57:01,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 19:57:01,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:57:01,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-23 19:57:01,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:57:01,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-23 19:57:01,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:57:01,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:57:01,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:57:01,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:57:01,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:57:01,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-10-23 19:57:01,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:57:01,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2020-10-23 19:57:01,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:57:01,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2020-10-23 19:57:01,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:57:01,999 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 19:57:02,000 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [282519904] [2020-10-23 19:57:02,000 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:57:02,000 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-23 19:57:02,004 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189993940] [2020-10-23 19:57:02,005 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-23 19:57:02,005 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:57:02,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-23 19:57:02,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-23 19:57:02,010 INFO L87 Difference]: Start difference. First operand 380 states and 422 transitions. Second operand 6 states. [2020-10-23 19:57:02,718 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-23 19:57:03,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:57:03,562 INFO L93 Difference]: Finished difference Result 560 states and 642 transitions. [2020-10-23 19:57:03,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-23 19:57:03,562 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 187 [2020-10-23 19:57:03,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:57:03,565 INFO L225 Difference]: With dead ends: 560 [2020-10-23 19:57:03,565 INFO L226 Difference]: Without dead ends: 295 [2020-10-23 19:57:03,567 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-10-23 19:57:03,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2020-10-23 19:57:03,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 274. [2020-10-23 19:57:03,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 274 states. [2020-10-23 19:57:03,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 289 transitions. [2020-10-23 19:57:03,668 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 289 transitions. Word has length 187 [2020-10-23 19:57:03,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:57:03,669 INFO L481 AbstractCegarLoop]: Abstraction has 274 states and 289 transitions. [2020-10-23 19:57:03,669 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-23 19:57:03,669 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 289 transitions. [2020-10-23 19:57:03,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-10-23 19:57:03,672 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:57:03,672 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] [2020-10-23 19:57:03,672 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-23 19:57:03,672 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 19:57:03,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:57:03,673 INFO L82 PathProgramCache]: Analyzing trace with hash -758881306, now seen corresponding path program 1 times [2020-10-23 19:57:03,673 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:57:03,673 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2084917098] [2020-10-23 19:57:03,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:57:03,676 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:57:03,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 19:57:03,766 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 19:57:03,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 19:57:03,845 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 19:57:04,100 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-23 19:57:04,100 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-23 19:57:04,103 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-23 19:57:04,131 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 07:57:04 BoogieIcfgContainer [2020-10-23 19:57:04,132 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 19:57:04,133 INFO L168 Benchmark]: Toolchain (without parser) took 24790.89 ms. Allocated memory was 157.3 MB in the beginning and 425.7 MB in the end (delta: 268.4 MB). Free memory was 133.1 MB in the beginning and 196.8 MB in the end (delta: -63.6 MB). Peak memory consumption was 205.4 MB. Max. memory is 8.0 GB. [2020-10-23 19:57:04,134 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 157.3 MB. Free memory is still 131.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 19:57:04,135 INFO L168 Benchmark]: CACSL2BoogieTranslator took 697.44 ms. Allocated memory is still 157.3 MB. Free memory was 132.5 MB in the beginning and 111.5 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. [2020-10-23 19:57:04,136 INFO L168 Benchmark]: Boogie Preprocessor took 155.80 ms. Allocated memory is still 157.3 MB. Free memory was 111.5 MB in the beginning and 138.4 MB in the end (delta: -26.9 MB). Peak memory consumption was 3.7 MB. Max. memory is 8.0 GB. [2020-10-23 19:57:04,137 INFO L168 Benchmark]: RCFGBuilder took 1503.95 ms. Allocated memory is still 157.3 MB. Free memory was 137.9 MB in the beginning and 90.0 MB in the end (delta: 47.8 MB). Peak memory consumption was 59.4 MB. Max. memory is 8.0 GB. [2020-10-23 19:57:04,137 INFO L168 Benchmark]: TraceAbstraction took 22420.44 ms. Allocated memory was 157.3 MB in the beginning and 425.7 MB in the end (delta: 268.4 MB). Free memory was 90.0 MB in the beginning and 196.8 MB in the end (delta: -106.7 MB). Peak memory consumption was 161.2 MB. Max. memory is 8.0 GB. [2020-10-23 19:57:04,141 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 157.3 MB. Free memory is still 131.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 697.44 ms. Allocated memory is still 157.3 MB. Free memory was 132.5 MB in the beginning and 111.5 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 155.80 ms. Allocated memory is still 157.3 MB. Free memory was 111.5 MB in the beginning and 138.4 MB in the end (delta: -26.9 MB). Peak memory consumption was 3.7 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1503.95 ms. Allocated memory is still 157.3 MB. Free memory was 137.9 MB in the beginning and 90.0 MB in the end (delta: 47.8 MB). Peak memory consumption was 59.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 22420.44 ms. Allocated memory was 157.3 MB in the beginning and 425.7 MB in the end (delta: 268.4 MB). Free memory was 90.0 MB in the beginning and 196.8 MB in the end (delta: -106.7 MB). Peak memory consumption was 161.2 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: [L211] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L417] int pumpRunning = 0; [L418] int systemActive = 1; [L674] int waterLevel = 1; [L675] int methaneLevelCritical = 0; [L763] int cleanupTimeShifts = 4; [L839] int retValue_acc ; [L840] int tmp ; [L844] FCALL select_helpers() [L845] FCALL select_features() [L846] CALL, EXPR valid_product() [L922] int retValue_acc ; [L925] retValue_acc = 1 [L926] return (retValue_acc); [L846] RET, EXPR valid_product() [L846] tmp = valid_product() [L848] COND TRUE \read(tmp) [L850] FCALL setup() [L851] CALL runTest() [L830] CALL test() [L609] int splverifierCounter ; [L610] int tmp ; [L611] int tmp___0 ; [L612] int tmp___1 ; [L613] int tmp___2 ; [L616] splverifierCounter = 0 [L618] COND TRUE 1 [L620] COND TRUE splverifierCounter < 4 [L626] tmp = __VERIFIER_nondet_int() [L628] COND TRUE \read(tmp) [L630] CALL waterRise() [L692] COND TRUE waterLevel < 2 [L693] waterLevel = waterLevel + 1 [L630] RET waterRise() [L636] tmp___0 = __VERIFIER_nondet_int() [L638] COND FALSE !(\read(tmp___0)) [L646] tmp___2 = __VERIFIER_nondet_int() [L648] COND TRUE \read(tmp___2) [L661] CALL timeShift() [L425] COND FALSE !(\read(pumpRunning)) [L432] COND TRUE \read(systemActive) [L434] CALL processEnvironment() [L480] int tmp ; [L483] COND FALSE !(\read(pumpRunning)) [L498] CALL processEnvironment__wrappee__lowWaterSensor() [L454] int tmp ; [L457] COND FALSE !(\read(pumpRunning)) [L472] FCALL processEnvironment__wrappee__base() [L498] RET processEnvironment__wrappee__lowWaterSensor() [L434] RET processEnvironment() [L440] CALL __utac_acc__Specification3_spec__1() [L863] int tmp ; [L864] int tmp___0 ; [L865] int tmp___1 ; [L869] CALL, EXPR isMethaneLevelCritical() [L713] int retValue_acc ; [L716] retValue_acc = methaneLevelCritical [L717] return (retValue_acc); [L869] RET, EXPR isMethaneLevelCritical() [L869] tmp = isMethaneLevelCritical() [L871] COND FALSE !(\read(tmp)) [L875] CALL, EXPR getWaterLevel() [L745] int retValue_acc ; [L748] retValue_acc = waterLevel [L749] return (retValue_acc); [L875] RET, EXPR getWaterLevel() [L875] tmp___0 = getWaterLevel() [L877] COND TRUE tmp___0 == 2 [L879] CALL, EXPR isPumpRunning() [L532] int retValue_acc ; [L535] retValue_acc = pumpRunning [L536] return (retValue_acc); [L879] RET, EXPR isPumpRunning() [L879] tmp___1 = isPumpRunning() [L881] COND FALSE !(\read(tmp___1)) [L885] CALL __automaton_fail() [L600] CALL reach_error() [L3] __assert_fail("0", "minepump_spec3_product21.cil.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 634 locations, 5 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 22.3s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 17.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1140 SDtfs, 1574 SDslu, 1303 SDs, 0 SdLazy, 2736 SolverSat, 481 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 8.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 149 GetRequests, 106 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 8.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=380occurred 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: 0.7s AutomataMinimizationTime, 5 MinimizatonAttempts, 207 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...