/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_product44.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 19:57:33,669 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 19:57:33,672 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 19:57:33,707 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 19:57:33,708 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 19:57:33,709 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 19:57:33,711 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 19:57:33,713 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 19:57:33,715 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 19:57:33,717 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 19:57:33,718 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 19:57:33,719 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 19:57:33,720 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 19:57:33,721 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 19:57:33,722 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 19:57:33,724 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 19:57:33,725 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 19:57:33,726 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 19:57:33,742 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 19:57:33,748 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 19:57:33,752 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 19:57:33,754 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 19:57:33,758 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 19:57:33,759 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 19:57:33,766 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-23 19:57:33,766 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-23 19:57:33,766 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-23 19:57:33,769 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-23 19:57:33,769 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-23 19:57:33,771 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-23 19:57:33,772 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-23 19:57:33,773 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-23 19:57:33,774 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-23 19:57:33,775 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-23 19:57:33,777 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-23 19:57:33,777 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-23 19:57:33,778 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-23 19:57:33,778 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-23 19:57:33,778 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 19:57:33,779 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 19:57:33,781 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 19:57:33,782 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 19:57:33,801 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 19:57:33,802 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 19:57:33,806 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 19:57:33,807 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 19:57:33,807 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 19:57:33,807 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 19:57:33,807 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 19:57:33,807 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 19:57:33,808 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 19:57:33,808 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 19:57:33,809 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 19:57:33,809 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 19:57:33,809 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 19:57:33,810 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 19:57:33,810 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 19:57:33,810 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-23 19:57:33,810 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 19:57:33,811 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 19:57:33,811 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 19:57:33,811 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 19:57:33,811 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-23 19:57:33,811 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 19:57:33,812 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 19:57:34,225 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 19:57:34,252 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 19:57:34,255 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 19:57:34,256 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 19:57:34,257 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 19:57:34,258 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product44.cil.c [2020-10-23 19:57:34,330 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e194f6f5b/0e80ee7045d7466e8e1572697cf944ea/FLAG5a1653fb2 [2020-10-23 19:57:34,977 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 19:57:34,978 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product44.cil.c [2020-10-23 19:57:35,000 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e194f6f5b/0e80ee7045d7466e8e1572697cf944ea/FLAG5a1653fb2 [2020-10-23 19:57:35,252 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e194f6f5b/0e80ee7045d7466e8e1572697cf944ea [2020-10-23 19:57:35,255 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 19:57:35,262 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 19:57:35,263 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 19:57:35,263 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 19:57:35,269 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 19:57:35,270 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 07:57:35" (1/1) ... [2020-10-23 19:57:35,274 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57d5afb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:57:35, skipping insertion in model container [2020-10-23 19:57:35,274 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 07:57:35" (1/1) ... [2020-10-23 19:57:35,283 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 19:57:35,356 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 19:57:35,698 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 19:57:35,717 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 19:57:35,797 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 19:57:35,833 INFO L208 MainTranslator]: Completed translation [2020-10-23 19:57:35,834 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:57:35 WrapperNode [2020-10-23 19:57:35,834 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 19:57:35,835 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 19:57:35,835 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 19:57:35,836 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 19:57:35,849 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:57:35" (1/1) ... [2020-10-23 19:57:35,849 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:57:35" (1/1) ... [2020-10-23 19:57:35,868 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:57:35" (1/1) ... [2020-10-23 19:57:35,868 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:57:35" (1/1) ... [2020-10-23 19:57:35,898 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:57:35" (1/1) ... [2020-10-23 19:57:35,908 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:57:35" (1/1) ... [2020-10-23 19:57:35,916 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:57:35" (1/1) ... [2020-10-23 19:57:35,924 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 19:57:35,925 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 19:57:35,925 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 19:57:35,925 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 19:57:35,926 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:57:35" (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 19:57:36,032 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 19:57:36,033 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 19:57:36,033 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-10-23 19:57:36,034 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 19:57:36,034 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-10-23 19:57:36,034 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-10-23 19:57:36,034 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-10-23 19:57:36,034 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-10-23 19:57:36,035 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 19:57:36,035 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-10-23 19:57:36,035 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-10-23 19:57:36,036 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-10-23 19:57:36,036 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-10-23 19:57:36,036 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-10-23 19:57:36,036 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-10-23 19:57:36,036 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-10-23 19:57:36,037 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-10-23 19:57:36,037 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-10-23 19:57:36,038 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-10-23 19:57:36,038 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-10-23 19:57:36,039 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-10-23 19:57:36,039 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-10-23 19:57:36,041 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-10-23 19:57:36,058 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-10-23 19:57:36,058 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-10-23 19:57:36,058 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-10-23 19:57:36,058 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-10-23 19:57:36,058 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-10-23 19:57:36,058 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-10-23 19:57:36,059 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-10-23 19:57:36,059 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-10-23 19:57:36,059 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-10-23 19:57:36,059 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-10-23 19:57:36,060 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-10-23 19:57:36,060 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-10-23 19:57:36,060 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-10-23 19:57:36,060 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-10-23 19:57:36,060 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-10-23 19:57:36,060 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-10-23 19:57:36,061 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-10-23 19:57:36,061 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-10-23 19:57:36,061 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 19:57:36,061 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 19:57:36,061 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 19:57:36,061 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 19:57:36,062 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-23 19:57:36,062 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-10-23 19:57:36,062 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-10-23 19:57:36,062 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-10-23 19:57:36,062 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-10-23 19:57:36,062 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-10-23 19:57:36,062 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-10-23 19:57:36,063 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-10-23 19:57:36,063 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-10-23 19:57:36,063 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-10-23 19:57:36,063 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-10-23 19:57:36,063 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-10-23 19:57:36,063 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-10-23 19:57:36,064 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-10-23 19:57:36,064 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 19:57:36,064 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-10-23 19:57:36,064 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-10-23 19:57:36,064 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-10-23 19:57:36,064 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-10-23 19:57:36,064 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-10-23 19:57:36,065 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-10-23 19:57:36,065 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-10-23 19:57:36,065 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-10-23 19:57:36,065 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-10-23 19:57:36,065 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-23 19:57:36,065 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-23 19:57:36,066 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-10-23 19:57:36,066 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-23 19:57:36,066 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-23 19:57:36,066 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 19:57:36,067 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-23 19:57:36,067 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-10-23 19:57:36,067 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 19:57:36,067 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-10-23 19:57:36,067 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-10-23 19:57:36,068 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 19:57:36,068 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-10-23 19:57:36,068 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-10-23 19:57:36,068 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-10-23 19:57:36,069 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-10-23 19:57:36,069 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-10-23 19:57:36,072 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-10-23 19:57:36,073 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-10-23 19:57:36,073 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-10-23 19:57:36,073 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-10-23 19:57:36,073 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-10-23 19:57:36,074 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-10-23 19:57:36,074 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-10-23 19:57:36,074 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 19:57:36,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 19:57:36,075 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 19:57:37,424 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 19:57:37,424 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-23 19:57:37,427 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 07:57:37 BoogieIcfgContainer [2020-10-23 19:57:37,428 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 19:57:37,430 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 19:57:37,430 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 19:57:37,433 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 19:57:37,433 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 07:57:35" (1/3) ... [2020-10-23 19:57:37,434 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4482acb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 07:57:37, skipping insertion in model container [2020-10-23 19:57:37,434 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:57:35" (2/3) ... [2020-10-23 19:57:37,435 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4482acb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 07:57:37, skipping insertion in model container [2020-10-23 19:57:37,435 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 07:57:37" (3/3) ... [2020-10-23 19:57:37,436 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product44.cil.c [2020-10-23 19:57:37,447 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-23 19:57:37,453 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-10-23 19:57:37,466 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-23 19:57:37,492 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 19:57:37,492 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 19:57:37,492 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-10-23 19:57:37,492 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 19:57:37,492 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 19:57:37,492 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 19:57:37,493 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 19:57:37,493 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 19:57:37,515 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states. [2020-10-23 19:57:37,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-10-23 19:57:37,535 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:57:37,536 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 19:57:37,537 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 19:57:37,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:57:37,543 INFO L82 PathProgramCache]: Analyzing trace with hash -573451514, now seen corresponding path program 1 times [2020-10-23 19:57:37,552 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:57:37,553 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [596247260] [2020-10-23 19:57:37,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:57:37,628 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:57:37,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:57:38,388 WARN L193 SmtUtils]: Spent 428.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 19:57:38,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:57:38,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:57:38,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 19:57:38,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:57:38,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 19:57:38,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:57:38,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 19:57:38,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:57:38,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 19:57:38,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:57:38,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-23 19:57:38,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:57:38,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-10-23 19:57:38,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:57:38,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-10-23 19:57:38,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:57:38,587 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 19:57:38,589 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [596247260] [2020-10-23 19:57:38,591 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:57:38,591 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-23 19:57:38,591 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906744497] [2020-10-23 19:57:38,596 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-23 19:57:38,597 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:57:38,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-23 19:57:38,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-23 19:57:38,613 INFO L87 Difference]: Start difference. First operand 328 states. Second operand 3 states. [2020-10-23 19:57:40,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:57:40,606 INFO L93 Difference]: Finished difference Result 516 states and 609 transitions. [2020-10-23 19:57:40,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-23 19:57:40,608 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 159 [2020-10-23 19:57:40,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:57:40,626 INFO L225 Difference]: With dead ends: 516 [2020-10-23 19:57:40,626 INFO L226 Difference]: Without dead ends: 318 [2020-10-23 19:57:40,632 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-23 19:57:40,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2020-10-23 19:57:40,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 274. [2020-10-23 19:57:40,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 274 states. [2020-10-23 19:57:40,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 296 transitions. [2020-10-23 19:57:40,789 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 296 transitions. Word has length 159 [2020-10-23 19:57:40,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:57:40,790 INFO L481 AbstractCegarLoop]: Abstraction has 274 states and 296 transitions. [2020-10-23 19:57:40,790 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-23 19:57:40,790 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 296 transitions. [2020-10-23 19:57:40,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-23 19:57:40,794 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:57:40,795 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 19:57:40,795 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 19:57:40,795 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 19:57:40,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:57:40,796 INFO L82 PathProgramCache]: Analyzing trace with hash -368518360, now seen corresponding path program 1 times [2020-10-23 19:57:40,797 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:57:40,797 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1494467209] [2020-10-23 19:57:40,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:57:40,801 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:57:40,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:57:41,306 WARN L193 SmtUtils]: Spent 376.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 19:57:41,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:57:41,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:57:41,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 19:57:41,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:57:41,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 19:57:41,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:57:41,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 19:57:41,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:57:41,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 19:57:41,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:57:41,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-23 19:57:41,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:57:41,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-23 19:57:41,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:57:41,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-10-23 19:57:41,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:57:41,495 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 19:57:41,496 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1494467209] [2020-10-23 19:57:41,496 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:57:41,497 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-23 19:57:41,497 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965885915] [2020-10-23 19:57:41,500 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-23 19:57:41,502 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:57:41,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-23 19:57:41,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-23 19:57:41,503 INFO L87 Difference]: Start difference. First operand 274 states and 296 transitions. Second operand 4 states. [2020-10-23 19:57:42,411 WARN L193 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:57:43,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:57:43,586 INFO L93 Difference]: Finished difference Result 417 states and 466 transitions. [2020-10-23 19:57:43,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-23 19:57:43,593 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 160 [2020-10-23 19:57:43,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:57:43,600 INFO L225 Difference]: With dead ends: 417 [2020-10-23 19:57:43,600 INFO L226 Difference]: Without dead ends: 301 [2020-10-23 19:57:43,607 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 19:57:43,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2020-10-23 19:57:43,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 264. [2020-10-23 19:57:43,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 264 states. [2020-10-23 19:57:43,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 283 transitions. [2020-10-23 19:57:43,780 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 283 transitions. Word has length 160 [2020-10-23 19:57:43,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:57:43,781 INFO L481 AbstractCegarLoop]: Abstraction has 264 states and 283 transitions. [2020-10-23 19:57:43,781 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-23 19:57:43,781 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 283 transitions. [2020-10-23 19:57:43,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-10-23 19:57:43,788 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:57:43,788 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 19:57:43,789 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 19:57:43,789 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 19:57:43,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:57:43,790 INFO L82 PathProgramCache]: Analyzing trace with hash -559804130, now seen corresponding path program 1 times [2020-10-23 19:57:43,790 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:57:43,790 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [11001309] [2020-10-23 19:57:43,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:57:43,794 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:57:43,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:57:44,274 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 19:57:44,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:57:44,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:57:44,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 19:57:44,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:57:44,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 19:57:44,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:57:44,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 19:57:44,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:57:44,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 19:57:44,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:57:44,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-10-23 19:57:44,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:57:44,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-23 19:57:44,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:57:44,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-10-23 19:57:44,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:57:44,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-10-23 19:57:44,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:57:44,471 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 19:57:44,472 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [11001309] [2020-10-23 19:57:44,472 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:57:44,472 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-23 19:57:44,472 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35735183] [2020-10-23 19:57:44,473 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-23 19:57:44,473 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:57:44,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-23 19:57:44,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-23 19:57:44,474 INFO L87 Difference]: Start difference. First operand 264 states and 283 transitions. Second operand 10 states. [2020-10-23 19:57:45,247 WARN L193 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-23 19:57:45,713 WARN L193 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:57:46,101 WARN L193 SmtUtils]: Spent 365.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 19:57:46,469 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:57:46,869 WARN L193 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:57:47,226 WARN L193 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:57:48,366 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:57:51,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:57:51,381 INFO L93 Difference]: Finished difference Result 729 states and 840 transitions. [2020-10-23 19:57:51,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-23 19:57:51,384 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 173 [2020-10-23 19:57:51,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:57:51,391 INFO L225 Difference]: With dead ends: 729 [2020-10-23 19:57:51,392 INFO L226 Difference]: Without dead ends: 580 [2020-10-23 19:57:51,393 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2020-10-23 19:57:51,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2020-10-23 19:57:51,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 471. [2020-10-23 19:57:51,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 471 states. [2020-10-23 19:57:51,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 520 transitions. [2020-10-23 19:57:51,616 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 520 transitions. Word has length 173 [2020-10-23 19:57:51,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:57:51,617 INFO L481 AbstractCegarLoop]: Abstraction has 471 states and 520 transitions. [2020-10-23 19:57:51,617 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-23 19:57:51,617 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 520 transitions. [2020-10-23 19:57:51,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-10-23 19:57:51,621 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:57:51,621 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 19:57:51,621 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-23 19:57:51,621 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 19:57:51,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:57:51,622 INFO L82 PathProgramCache]: Analyzing trace with hash -1075510106, now seen corresponding path program 1 times [2020-10-23 19:57:51,622 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:57:51,623 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [820909381] [2020-10-23 19:57:51,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:57:51,626 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:57:51,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:57:52,040 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 19:57:52,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:57:52,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:57:52,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 19:57:52,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:57:52,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 19:57:52,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:57:52,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 19:57:52,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:57:52,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 19:57:52,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:57:52,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-23 19:57:52,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:57:52,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-10-23 19:57:52,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:57:52,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-23 19:57:52,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:57:52,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2020-10-23 19:57:52,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:57:52,262 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 19:57:52,263 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [820909381] [2020-10-23 19:57:52,263 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:57:52,263 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-23 19:57:52,263 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505880151] [2020-10-23 19:57:52,265 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-23 19:57:52,265 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:57:52,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-23 19:57:52,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-23 19:57:52,267 INFO L87 Difference]: Start difference. First operand 471 states and 520 transitions. Second operand 9 states. [2020-10-23 19:57:52,897 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-23 19:57:54,929 WARN L193 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:57:55,350 WARN L193 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:57:55,767 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:57:56,243 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-23 19:57:56,604 WARN L193 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:57:57,006 WARN L193 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:57:57,380 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:57:58,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:57:58,657 INFO L93 Difference]: Finished difference Result 1264 states and 1500 transitions. [2020-10-23 19:57:58,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-23 19:57:58,658 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 178 [2020-10-23 19:57:58,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:57:58,666 INFO L225 Difference]: With dead ends: 1264 [2020-10-23 19:57:58,666 INFO L226 Difference]: Without dead ends: 908 [2020-10-23 19:57:58,668 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-10-23 19:57:58,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 908 states. [2020-10-23 19:57:58,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 908 to 805. [2020-10-23 19:57:58,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 805 states. [2020-10-23 19:57:58,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 805 states to 805 states and 909 transitions. [2020-10-23 19:57:58,985 INFO L78 Accepts]: Start accepts. Automaton has 805 states and 909 transitions. Word has length 178 [2020-10-23 19:57:58,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:57:58,986 INFO L481 AbstractCegarLoop]: Abstraction has 805 states and 909 transitions. [2020-10-23 19:57:58,986 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-23 19:57:58,986 INFO L276 IsEmpty]: Start isEmpty. Operand 805 states and 909 transitions. [2020-10-23 19:57:58,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2020-10-23 19:57:58,991 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:57:58,991 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 19:57:58,991 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-23 19:57:58,992 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 19:57:58,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:57:58,992 INFO L82 PathProgramCache]: Analyzing trace with hash 1473250213, now seen corresponding path program 1 times [2020-10-23 19:57:58,992 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:57:58,993 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1929838061] [2020-10-23 19:57:58,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:57:58,996 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:57:59,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:57:59,415 WARN L193 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 19:57:59,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:57:59,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:57:59,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 19:57:59,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:57:59,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 19:57:59,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:57:59,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 19:57:59,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:57:59,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 19:57:59,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:57:59,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-23 19:57:59,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:57:59,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-23 19:57:59,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:57:59,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-10-23 19:57:59,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:57:59,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-10-23 19:57:59,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:57:59,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-10-23 19:57:59,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:57:59,601 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 19:57:59,602 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1929838061] [2020-10-23 19:57:59,602 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:57:59,602 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-23 19:57:59,602 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522131181] [2020-10-23 19:57:59,603 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-23 19:57:59,603 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:57:59,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-23 19:57:59,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-23 19:57:59,604 INFO L87 Difference]: Start difference. First operand 805 states and 909 transitions. Second operand 6 states. [2020-10-23 19:58:00,242 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-23 19:58:02,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:58:02,799 INFO L93 Difference]: Finished difference Result 1863 states and 2192 transitions. [2020-10-23 19:58:02,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-23 19:58:02,800 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 183 [2020-10-23 19:58:02,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:58:02,810 INFO L225 Difference]: With dead ends: 1863 [2020-10-23 19:58:02,810 INFO L226 Difference]: Without dead ends: 1173 [2020-10-23 19:58:02,814 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-10-23 19:58:02,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1173 states. [2020-10-23 19:58:03,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1173 to 1092. [2020-10-23 19:58:03,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1092 states. [2020-10-23 19:58:03,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1092 states to 1092 states and 1237 transitions. [2020-10-23 19:58:03,447 INFO L78 Accepts]: Start accepts. Automaton has 1092 states and 1237 transitions. Word has length 183 [2020-10-23 19:58:03,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:58:03,447 INFO L481 AbstractCegarLoop]: Abstraction has 1092 states and 1237 transitions. [2020-10-23 19:58:03,448 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-23 19:58:03,448 INFO L276 IsEmpty]: Start isEmpty. Operand 1092 states and 1237 transitions. [2020-10-23 19:58:03,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2020-10-23 19:58:03,451 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:58:03,451 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 19:58:03,451 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-23 19:58:03,452 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 19:58:03,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:58:03,452 INFO L82 PathProgramCache]: Analyzing trace with hash 2110951855, now seen corresponding path program 1 times [2020-10-23 19:58:03,452 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:58:03,453 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [135573400] [2020-10-23 19:58:03,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:58:03,456 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:58:03,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 19:58:03,541 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 19:58:03,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 19:58:03,622 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 19:58:03,888 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-23 19:58:03,888 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-23 19:58:03,889 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-23 19:58:03,912 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 07:58:03 BoogieIcfgContainer [2020-10-23 19:58:03,912 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 19:58:03,914 INFO L168 Benchmark]: Toolchain (without parser) took 28656.86 ms. Allocated memory was 151.0 MB in the beginning and 553.6 MB in the end (delta: 402.7 MB). Free memory was 126.0 MB in the beginning and 220.0 MB in the end (delta: -94.0 MB). Peak memory consumption was 309.4 MB. Max. memory is 8.0 GB. [2020-10-23 19:58:03,915 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 151.0 MB. Free memory is still 125.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 19:58:03,915 INFO L168 Benchmark]: CACSL2BoogieTranslator took 571.18 ms. Allocated memory is still 151.0 MB. Free memory was 125.3 MB in the beginning and 104.3 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. [2020-10-23 19:58:03,916 INFO L168 Benchmark]: Boogie Preprocessor took 88.52 ms. Allocated memory is still 151.0 MB. Free memory was 104.3 MB in the beginning and 100.4 MB in the end (delta: 3.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2020-10-23 19:58:03,917 INFO L168 Benchmark]: RCFGBuilder took 1503.19 ms. Allocated memory was 151.0 MB in the beginning and 200.3 MB in the end (delta: 49.3 MB). Free memory was 100.4 MB in the beginning and 131.2 MB in the end (delta: -30.8 MB). Peak memory consumption was 24.9 MB. Max. memory is 8.0 GB. [2020-10-23 19:58:03,918 INFO L168 Benchmark]: TraceAbstraction took 26482.70 ms. Allocated memory was 200.3 MB in the beginning and 553.6 MB in the end (delta: 353.4 MB). Free memory was 130.7 MB in the beginning and 220.0 MB in the end (delta: -89.3 MB). Peak memory consumption was 263.5 MB. Max. memory is 8.0 GB. [2020-10-23 19:58:03,922 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 125.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 571.18 ms. Allocated memory is still 151.0 MB. Free memory was 125.3 MB in the beginning and 104.3 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 88.52 ms. Allocated memory is still 151.0 MB. Free memory was 104.3 MB in the beginning and 100.4 MB in the end (delta: 3.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1503.19 ms. Allocated memory was 151.0 MB in the beginning and 200.3 MB in the end (delta: 49.3 MB). Free memory was 100.4 MB in the beginning and 131.2 MB in the end (delta: -30.8 MB). Peak memory consumption was 24.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 26482.70 ms. Allocated memory was 200.3 MB in the beginning and 553.6 MB in the end (delta: 353.4 MB). Free memory was 130.7 MB in the beginning and 220.0 MB in the end (delta: -89.3 MB). Peak memory consumption was 263.5 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: [L42] int cleanupTimeShifts = 4; [L187] int waterLevel = 1; [L188] int methaneLevelCritical = 0; [L494] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L695] int pumpRunning = 0; [L696] int systemActive = 1; [L123] int retValue_acc ; [L124] int tmp ; [L128] FCALL select_helpers() [L129] FCALL select_features() [L130] CALL, EXPR valid_product() [L307] int retValue_acc ; [L310] retValue_acc = 1 [L311] return (retValue_acc); [L130] RET, EXPR valid_product() [L130] tmp = valid_product() [L132] COND TRUE \read(tmp) [L134] FCALL setup() [L135] CALL runTest() [L114] CALL test() [L889] int splverifierCounter ; [L890] int tmp ; [L891] int tmp___0 ; [L892] int tmp___1 ; [L893] int tmp___2 ; [L896] splverifierCounter = 0 [L898] COND TRUE 1 [L900] COND TRUE splverifierCounter < 4 [L906] tmp = __VERIFIER_nondet_int() [L908] COND TRUE \read(tmp) [L910] CALL waterRise() [L205] COND TRUE waterLevel < 2 [L206] waterLevel = waterLevel + 1 [L910] RET waterRise() [L916] tmp___0 = __VERIFIER_nondet_int() [L918] COND FALSE !(\read(tmp___0)) [L926] tmp___2 = __VERIFIER_nondet_int() [L928] COND FALSE !(\read(tmp___2)) [L934] tmp___1 = __VERIFIER_nondet_int() [L936] COND TRUE \read(tmp___1) [L938] CALL stopSystem() [L868] COND FALSE !(\read(pumpRunning)) [L875] systemActive = 0 [L938] RET stopSystem() [L945] CALL timeShift() [L702] COND FALSE !(\read(pumpRunning)) [L709] COND FALSE !(\read(systemActive)) [L717] CALL __utac_acc__Specification3_spec__1() [L151] int tmp ; [L152] int tmp___0 ; [L153] int tmp___1 ; [L157] CALL, EXPR isMethaneLevelCritical() [L226] int retValue_acc ; [L229] retValue_acc = methaneLevelCritical [L230] return (retValue_acc); [L157] RET, EXPR isMethaneLevelCritical() [L157] tmp = isMethaneLevelCritical() [L159] COND FALSE !(\read(tmp)) [L163] CALL, EXPR getWaterLevel() [L258] int retValue_acc ; [L261] retValue_acc = waterLevel [L262] return (retValue_acc); [L163] RET, EXPR getWaterLevel() [L163] tmp___0 = getWaterLevel() [L165] COND TRUE tmp___0 == 2 [L167] CALL, EXPR isPumpRunning() [L801] int retValue_acc ; [L804] retValue_acc = pumpRunning [L805] return (retValue_acc); [L167] RET, EXPR isPumpRunning() [L167] tmp___1 = isPumpRunning() [L169] COND FALSE !(\read(tmp___1)) [L173] CALL __automaton_fail() [L320] CALL reach_error() [L3] __assert_fail("0", "minepump_spec3_product44.cil.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 41 procedures, 644 locations, 5 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 26.4s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 20.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1314 SDtfs, 2168 SDslu, 1666 SDs, 0 SdLazy, 3699 SolverSat, 742 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 11.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 151 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 8.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1092occurred 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, 374 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...