/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_product20.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 19:56:28,304 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 19:56:28,308 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 19:56:28,353 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 19:56:28,354 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 19:56:28,355 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 19:56:28,357 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 19:56:28,360 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 19:56:28,362 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 19:56:28,371 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 19:56:28,373 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 19:56:28,374 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 19:56:28,375 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 19:56:28,376 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 19:56:28,377 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 19:56:28,379 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 19:56:28,380 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 19:56:28,381 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 19:56:28,383 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 19:56:28,385 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 19:56:28,387 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 19:56:28,390 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 19:56:28,392 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 19:56:28,393 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 19:56:28,396 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-23 19:56:28,397 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-23 19:56:28,397 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-23 19:56:28,398 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-23 19:56:28,399 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-23 19:56:28,400 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-23 19:56:28,400 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-23 19:56:28,401 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-23 19:56:28,402 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-23 19:56:28,403 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-23 19:56:28,404 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-23 19:56:28,405 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-23 19:56:28,405 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-23 19:56:28,406 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-23 19:56:28,406 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 19:56:28,407 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 19:56:28,408 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 19:56:28,409 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 19:56:28,422 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 19:56:28,423 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 19:56:28,424 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 19:56:28,424 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 19:56:28,425 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 19:56:28,425 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 19:56:28,425 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 19:56:28,425 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 19:56:28,426 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 19:56:28,426 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 19:56:28,426 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 19:56:28,426 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 19:56:28,427 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 19:56:28,427 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 19:56:28,427 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 19:56:28,427 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-23 19:56:28,427 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 19:56:28,428 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 19:56:28,428 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 19:56:28,428 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 19:56:28,428 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-23 19:56:28,428 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 19:56:28,429 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 19:56:28,805 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 19:56:28,854 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 19:56:28,857 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 19:56:28,859 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 19:56:28,860 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 19:56:28,864 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product20.cil.c [2020-10-23 19:56:28,950 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c87973ff1/a306131d96ca467aa00b7df127e911da/FLAGfc26b11c5 [2020-10-23 19:56:29,607 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 19:56:29,608 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product20.cil.c [2020-10-23 19:56:29,621 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c87973ff1/a306131d96ca467aa00b7df127e911da/FLAGfc26b11c5 [2020-10-23 19:56:29,918 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c87973ff1/a306131d96ca467aa00b7df127e911da [2020-10-23 19:56:29,924 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 19:56:29,935 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 19:56:29,940 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 19:56:29,940 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 19:56:29,944 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 19:56:29,945 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 07:56:29" (1/1) ... [2020-10-23 19:56:29,952 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24994ef0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:56:29, skipping insertion in model container [2020-10-23 19:56:29,953 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 07:56:29" (1/1) ... [2020-10-23 19:56:29,967 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 19:56:30,030 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 19:56:30,505 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 19:56:30,527 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 19:56:30,690 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 19:56:30,737 INFO L208 MainTranslator]: Completed translation [2020-10-23 19:56:30,737 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:56:30 WrapperNode [2020-10-23 19:56:30,737 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 19:56:30,738 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 19:56:30,739 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 19:56:30,739 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 19:56:30,754 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:56:30" (1/1) ... [2020-10-23 19:56:30,754 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:56:30" (1/1) ... [2020-10-23 19:56:30,799 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:56:30" (1/1) ... [2020-10-23 19:56:30,800 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:56:30" (1/1) ... [2020-10-23 19:56:30,828 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:56:30" (1/1) ... [2020-10-23 19:56:30,838 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:56:30" (1/1) ... [2020-10-23 19:56:30,843 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:56:30" (1/1) ... [2020-10-23 19:56:30,851 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 19:56:30,852 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 19:56:30,852 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 19:56:30,852 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 19:56:30,853 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:56:30" (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 19:56:30,974 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 19:56:30,974 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 19:56:30,974 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-10-23 19:56:30,974 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 19:56:30,974 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-10-23 19:56:30,975 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-10-23 19:56:30,975 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-10-23 19:56:30,975 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-10-23 19:56:30,975 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-10-23 19:56:30,975 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-10-23 19:56:30,975 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-10-23 19:56:30,976 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-10-23 19:56:30,976 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-10-23 19:56:30,976 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-10-23 19:56:30,976 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-10-23 19:56:30,976 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-10-23 19:56:30,976 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-10-23 19:56:30,977 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-10-23 19:56:30,977 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 19:56:30,977 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-10-23 19:56:30,977 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-10-23 19:56:30,977 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-10-23 19:56:30,978 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-10-23 19:56:30,978 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-10-23 19:56:30,978 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-10-23 19:56:30,978 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-10-23 19:56:30,978 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-10-23 19:56:30,978 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-10-23 19:56:30,978 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-10-23 19:56:30,979 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-10-23 19:56:30,979 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-10-23 19:56:30,979 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-10-23 19:56:30,979 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-10-23 19:56:30,979 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-10-23 19:56:30,979 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-10-23 19:56:30,980 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-10-23 19:56:30,980 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-10-23 19:56:30,980 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-10-23 19:56:30,980 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-10-23 19:56:30,980 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-10-23 19:56:30,980 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 19:56:30,981 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 19:56:30,981 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 19:56:30,981 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 19:56:30,981 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-23 19:56:30,981 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-10-23 19:56:30,981 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-10-23 19:56:30,981 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-10-23 19:56:30,981 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-10-23 19:56:30,982 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-10-23 19:56:30,982 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-23 19:56:30,982 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-23 19:56:30,982 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-10-23 19:56:30,982 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-23 19:56:30,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-23 19:56:30,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 19:56:30,983 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-23 19:56:30,983 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-10-23 19:56:30,983 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 19:56:30,983 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-10-23 19:56:30,983 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-10-23 19:56:30,983 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 19:56:30,983 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-10-23 19:56:30,983 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-10-23 19:56:30,984 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-10-23 19:56:30,984 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-10-23 19:56:30,984 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-10-23 19:56:30,984 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-10-23 19:56:30,984 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-10-23 19:56:30,984 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-10-23 19:56:30,984 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-10-23 19:56:30,985 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-10-23 19:56:30,985 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-10-23 19:56:30,985 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-10-23 19:56:30,985 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 19:56:30,985 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-10-23 19:56:30,985 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-10-23 19:56:30,985 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-10-23 19:56:30,986 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-10-23 19:56:30,986 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-10-23 19:56:30,986 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-10-23 19:56:30,986 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-10-23 19:56:30,986 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-10-23 19:56:30,986 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-10-23 19:56:30,986 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-10-23 19:56:30,987 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-10-23 19:56:30,987 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-10-23 19:56:30,987 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-10-23 19:56:30,987 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-10-23 19:56:30,987 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-10-23 19:56:30,987 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-10-23 19:56:30,988 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 19:56:30,988 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 19:56:30,988 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 19:56:32,402 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 19:56:32,403 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-23 19:56:32,406 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 07:56:32 BoogieIcfgContainer [2020-10-23 19:56:32,406 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 19:56:32,408 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 19:56:32,409 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 19:56:32,412 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 19:56:32,413 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 07:56:29" (1/3) ... [2020-10-23 19:56:32,414 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@714c7e57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 07:56:32, skipping insertion in model container [2020-10-23 19:56:32,414 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:56:30" (2/3) ... [2020-10-23 19:56:32,414 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@714c7e57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 07:56:32, skipping insertion in model container [2020-10-23 19:56:32,414 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 07:56:32" (3/3) ... [2020-10-23 19:56:32,416 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product20.cil.c [2020-10-23 19:56:32,429 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-23 19:56:32,436 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-10-23 19:56:32,457 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-23 19:56:32,494 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 19:56:32,495 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 19:56:32,495 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-10-23 19:56:32,495 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 19:56:32,496 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 19:56:32,496 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 19:56:32,496 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 19:56:32,496 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 19:56:32,535 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states. [2020-10-23 19:56:32,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-10-23 19:56:32,557 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:56:32,558 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 19:56:32,559 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 19:56:32,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:56:32,566 INFO L82 PathProgramCache]: Analyzing trace with hash 222472712, now seen corresponding path program 1 times [2020-10-23 19:56:32,575 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:56:32,576 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2126600712] [2020-10-23 19:56:32,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:56:32,664 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:56:32,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:33,362 WARN L193 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 19:56:33,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:56:33,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:33,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 19:56:33,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:33,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 19:56:33,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:33,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 19:56:33,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:33,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 19:56:33,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:33,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-23 19:56:33,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:33,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-10-23 19:56:33,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:33,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-10-23 19:56:33,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:33,632 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 19:56:33,634 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2126600712] [2020-10-23 19:56:33,636 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:56:33,636 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-23 19:56:33,637 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986058353] [2020-10-23 19:56:33,642 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-23 19:56:33,643 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:56:33,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-23 19:56:33,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-23 19:56:33,661 INFO L87 Difference]: Start difference. First operand 311 states. Second operand 3 states. [2020-10-23 19:56:35,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:56:35,272 INFO L93 Difference]: Finished difference Result 468 states and 557 transitions. [2020-10-23 19:56:35,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-23 19:56:35,274 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 159 [2020-10-23 19:56:35,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:56:35,304 INFO L225 Difference]: With dead ends: 468 [2020-10-23 19:56:35,305 INFO L226 Difference]: Without dead ends: 293 [2020-10-23 19:56:35,312 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 19:56:35,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2020-10-23 19:56:35,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 251. [2020-10-23 19:56:35,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 251 states. [2020-10-23 19:56:35,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 271 transitions. [2020-10-23 19:56:35,480 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 271 transitions. Word has length 159 [2020-10-23 19:56:35,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:56:35,484 INFO L481 AbstractCegarLoop]: Abstraction has 251 states and 271 transitions. [2020-10-23 19:56:35,484 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-23 19:56:35,484 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 271 transitions. [2020-10-23 19:56:35,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-23 19:56:35,498 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:56:35,498 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 19:56:35,499 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 19:56:35,499 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 19:56:35,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:56:35,500 INFO L82 PathProgramCache]: Analyzing trace with hash 499188450, now seen corresponding path program 1 times [2020-10-23 19:56:35,500 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:56:35,501 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1805987124] [2020-10-23 19:56:35,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:56:35,509 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:56:35,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:36,108 WARN L193 SmtUtils]: Spent 385.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 19:56:36,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:56:36,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:36,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 19:56:36,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:36,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 19:56:36,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:36,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 19:56:36,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:36,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 19:56:36,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:36,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-23 19:56:36,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:36,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-23 19:56:36,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:36,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-10-23 19:56:36,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:36,206 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 19:56:36,207 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1805987124] [2020-10-23 19:56:36,207 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:56:36,207 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-23 19:56:36,208 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788486846] [2020-10-23 19:56:36,209 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-23 19:56:36,209 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:56:36,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-23 19:56:36,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-23 19:56:36,210 INFO L87 Difference]: Start difference. First operand 251 states and 271 transitions. Second operand 4 states. [2020-10-23 19:56:37,031 WARN L193 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:56:38,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:56:38,115 INFO L93 Difference]: Finished difference Result 372 states and 416 transitions. [2020-10-23 19:56:38,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-23 19:56:38,116 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 160 [2020-10-23 19:56:38,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:56:38,120 INFO L225 Difference]: With dead ends: 372 [2020-10-23 19:56:38,120 INFO L226 Difference]: Without dead ends: 276 [2020-10-23 19:56:38,122 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 19:56:38,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2020-10-23 19:56:38,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 241. [2020-10-23 19:56:38,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2020-10-23 19:56:38,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 258 transitions. [2020-10-23 19:56:38,215 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 258 transitions. Word has length 160 [2020-10-23 19:56:38,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:56:38,216 INFO L481 AbstractCegarLoop]: Abstraction has 241 states and 258 transitions. [2020-10-23 19:56:38,216 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-23 19:56:38,216 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 258 transitions. [2020-10-23 19:56:38,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-10-23 19:56:38,219 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:56:38,219 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 19:56:38,220 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 19:56:38,220 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 19:56:38,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:56:38,221 INFO L82 PathProgramCache]: Analyzing trace with hash 351937555, now seen corresponding path program 1 times [2020-10-23 19:56:38,221 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:56:38,221 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2117475468] [2020-10-23 19:56:38,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:56:38,225 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:56:38,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:38,717 WARN L193 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 19:56:38,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:56:38,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:38,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 19:56:38,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:38,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 19:56:38,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:38,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 19:56:38,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:38,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 19:56:38,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:38,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-10-23 19:56:38,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:38,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-23 19:56:38,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:38,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-10-23 19:56:38,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:38,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-10-23 19:56:38,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:38,881 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 19:56:38,882 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2117475468] [2020-10-23 19:56:38,882 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:56:38,882 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-23 19:56:38,883 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662408977] [2020-10-23 19:56:38,883 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-23 19:56:38,884 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:56:38,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-23 19:56:38,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-23 19:56:38,885 INFO L87 Difference]: Start difference. First operand 241 states and 258 transitions. Second operand 10 states. [2020-10-23 19:56:39,578 WARN L193 SmtUtils]: Spent 377.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-23 19:56:40,030 WARN L193 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:56:40,479 WARN L193 SmtUtils]: Spent 424.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 19:56:40,893 WARN L193 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:56:41,327 WARN L193 SmtUtils]: Spent 390.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:56:41,693 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:56:42,861 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:56:45,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:56:45,317 INFO L93 Difference]: Finished difference Result 656 states and 761 transitions. [2020-10-23 19:56:45,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-23 19:56:45,318 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 173 [2020-10-23 19:56:45,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:56:45,326 INFO L225 Difference]: With dead ends: 656 [2020-10-23 19:56:45,327 INFO L226 Difference]: Without dead ends: 530 [2020-10-23 19:56:45,328 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2020-10-23 19:56:45,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 530 states. [2020-10-23 19:56:45,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 530 to 437. [2020-10-23 19:56:45,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 437 states. [2020-10-23 19:56:45,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 486 transitions. [2020-10-23 19:56:45,587 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 486 transitions. Word has length 173 [2020-10-23 19:56:45,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:56:45,587 INFO L481 AbstractCegarLoop]: Abstraction has 437 states and 486 transitions. [2020-10-23 19:56:45,587 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-23 19:56:45,588 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 486 transitions. [2020-10-23 19:56:45,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-10-23 19:56:45,591 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:56:45,592 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 19:56:45,592 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-23 19:56:45,592 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 19:56:45,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:56:45,593 INFO L82 PathProgramCache]: Analyzing trace with hash -861308183, now seen corresponding path program 1 times [2020-10-23 19:56:45,593 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:56:45,594 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1321798416] [2020-10-23 19:56:45,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:56:45,598 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:56:45,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:46,035 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 19:56:46,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:56:46,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:46,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 19:56:46,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:46,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 19:56:46,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:46,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 19:56:46,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:46,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 19:56:46,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:46,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-23 19:56:46,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:46,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-10-23 19:56:46,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:46,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-23 19:56:46,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:46,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2020-10-23 19:56:46,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:46,218 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 19:56:46,219 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1321798416] [2020-10-23 19:56:46,219 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:56:46,219 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-23 19:56:46,220 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982459735] [2020-10-23 19:56:46,220 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-23 19:56:46,221 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:56:46,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-23 19:56:46,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-23 19:56:46,223 INFO L87 Difference]: Start difference. First operand 437 states and 486 transitions. Second operand 9 states. [2020-10-23 19:56:47,006 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-23 19:56:49,213 WARN L193 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:56:49,653 WARN L193 SmtUtils]: Spent 365.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:56:50,096 WARN L193 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:56:50,618 WARN L193 SmtUtils]: Spent 370.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-23 19:56:51,059 WARN L193 SmtUtils]: Spent 377.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:56:51,473 WARN L193 SmtUtils]: Spent 365.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:56:51,889 WARN L193 SmtUtils]: Spent 381.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:56:52,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:56:52,928 INFO L93 Difference]: Finished difference Result 1158 states and 1388 transitions. [2020-10-23 19:56:52,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-23 19:56:52,928 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 178 [2020-10-23 19:56:52,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:56:52,936 INFO L225 Difference]: With dead ends: 1158 [2020-10-23 19:56:52,937 INFO L226 Difference]: Without dead ends: 836 [2020-10-23 19:56:52,939 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-10-23 19:56:52,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 836 states. [2020-10-23 19:56:53,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 836 to 737. [2020-10-23 19:56:53,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 737 states. [2020-10-23 19:56:53,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 737 states to 737 states and 843 transitions. [2020-10-23 19:56:53,312 INFO L78 Accepts]: Start accepts. Automaton has 737 states and 843 transitions. Word has length 178 [2020-10-23 19:56:53,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:56:53,313 INFO L481 AbstractCegarLoop]: Abstraction has 737 states and 843 transitions. [2020-10-23 19:56:53,313 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-23 19:56:53,313 INFO L276 IsEmpty]: Start isEmpty. Operand 737 states and 843 transitions. [2020-10-23 19:56:53,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2020-10-23 19:56:53,317 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:56:53,318 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 19:56:53,318 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-23 19:56:53,318 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 19:56:53,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:56:53,319 INFO L82 PathProgramCache]: Analyzing trace with hash 962676831, now seen corresponding path program 1 times [2020-10-23 19:56:53,319 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:56:53,320 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [613584636] [2020-10-23 19:56:53,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:56:53,323 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:56:53,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:53,756 WARN L193 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 19:56:53,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:56:53,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:53,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 19:56:53,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:53,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 19:56:53,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:53,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 19:56:53,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:53,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 19:56:53,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:53,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-23 19:56:53,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:53,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-23 19:56:53,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:53,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-10-23 19:56:53,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:53,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-10-23 19:56:53,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:53,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-10-23 19:56:53,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:53,913 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 19:56:53,914 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [613584636] [2020-10-23 19:56:53,914 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:56:53,914 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-23 19:56:53,914 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925436344] [2020-10-23 19:56:53,915 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-23 19:56:53,915 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:56:53,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-23 19:56:53,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-23 19:56:53,916 INFO L87 Difference]: Start difference. First operand 737 states and 843 transitions. Second operand 6 states. [2020-10-23 19:56:54,617 WARN L193 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-23 19:56:56,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:56:56,018 INFO L93 Difference]: Finished difference Result 1255 states and 1496 transitions. [2020-10-23 19:56:56,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-23 19:56:56,019 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 183 [2020-10-23 19:56:56,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:56:56,026 INFO L225 Difference]: With dead ends: 1255 [2020-10-23 19:56:56,027 INFO L226 Difference]: Without dead ends: 633 [2020-10-23 19:56:56,029 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-10-23 19:56:56,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2020-10-23 19:56:56,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 556. [2020-10-23 19:56:56,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 556 states. [2020-10-23 19:56:56,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 607 transitions. [2020-10-23 19:56:56,257 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 607 transitions. Word has length 183 [2020-10-23 19:56:56,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:56:56,258 INFO L481 AbstractCegarLoop]: Abstraction has 556 states and 607 transitions. [2020-10-23 19:56:56,258 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-23 19:56:56,258 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 607 transitions. [2020-10-23 19:56:56,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2020-10-23 19:56:56,261 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:56:56,262 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 19:56:56,262 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-23 19:56:56,262 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 19:56:56,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:56:56,263 INFO L82 PathProgramCache]: Analyzing trace with hash -1618310669, now seen corresponding path program 1 times [2020-10-23 19:56:56,263 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:56:56,263 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [47318253] [2020-10-23 19:56:56,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:56:56,267 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:56:56,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 19:56:56,340 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 19:56:56,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 19:56:56,410 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 19:56:56,631 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-23 19:56:56,631 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-23 19:56:56,635 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-23 19:56:56,681 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 07:56:56 BoogieIcfgContainer [2020-10-23 19:56:56,682 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 19:56:56,687 INFO L168 Benchmark]: Toolchain (without parser) took 26757.81 ms. Allocated memory was 151.0 MB in the beginning and 484.4 MB in the end (delta: 333.4 MB). Free memory was 125.8 MB in the beginning and 243.4 MB in the end (delta: -117.7 MB). Peak memory consumption was 216.3 MB. Max. memory is 8.0 GB. [2020-10-23 19:56:56,688 INFO L168 Benchmark]: CDTParser took 1.10 ms. Allocated memory is still 151.0 MB. Free memory is still 124.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 19:56:56,695 INFO L168 Benchmark]: CACSL2BoogieTranslator took 798.13 ms. Allocated memory is still 151.0 MB. Free memory was 125.3 MB in the beginning and 104.1 MB in the end (delta: 21.2 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2020-10-23 19:56:56,697 INFO L168 Benchmark]: Boogie Preprocessor took 112.78 ms. Allocated memory is still 151.0 MB. Free memory was 104.1 MB in the beginning and 100.1 MB in the end (delta: 4.0 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-10-23 19:56:56,698 INFO L168 Benchmark]: RCFGBuilder took 1554.46 ms. Allocated memory was 151.0 MB in the beginning and 188.7 MB in the end (delta: 37.7 MB). Free memory was 100.1 MB in the beginning and 120.5 MB in the end (delta: -20.4 MB). Peak memory consumption was 24.7 MB. Max. memory is 8.0 GB. [2020-10-23 19:56:56,699 INFO L168 Benchmark]: TraceAbstraction took 24273.49 ms. Allocated memory was 188.7 MB in the beginning and 484.4 MB in the end (delta: 295.7 MB). Free memory was 119.9 MB in the beginning and 243.4 MB in the end (delta: -123.5 MB). Peak memory consumption was 171.7 MB. Max. memory is 8.0 GB. [2020-10-23 19:56:56,708 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.10 ms. Allocated memory is still 151.0 MB. Free memory is still 124.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 798.13 ms. Allocated memory is still 151.0 MB. Free memory was 125.3 MB in the beginning and 104.1 MB in the end (delta: 21.2 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 112.78 ms. Allocated memory is still 151.0 MB. Free memory was 104.1 MB in the beginning and 100.1 MB in the end (delta: 4.0 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1554.46 ms. Allocated memory was 151.0 MB in the beginning and 188.7 MB in the end (delta: 37.7 MB). Free memory was 100.1 MB in the beginning and 120.5 MB in the end (delta: -20.4 MB). Peak memory consumption was 24.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 24273.49 ms. Allocated memory was 188.7 MB in the beginning and 484.4 MB in the end (delta: 295.7 MB). Free memory was 119.9 MB in the beginning and 243.4 MB in the end (delta: -123.5 MB). Peak memory consumption was 171.7 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: [L249] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L446] int cleanupTimeShifts = 4; [L592] int pumpRunning = 0; [L593] int systemActive = 1; [L836] int waterLevel = 1; [L837] int methaneLevelCritical = 0; [L524] int retValue_acc ; [L525] int tmp ; [L529] FCALL select_helpers() [L530] FCALL select_features() [L531] CALL, EXPR valid_product() [L71] int retValue_acc ; [L74] retValue_acc = 1 [L75] return (retValue_acc); [L531] RET, EXPR valid_product() [L531] tmp = valid_product() [L533] COND TRUE \read(tmp) [L535] FCALL setup() [L536] CALL runTest() [L518] CALL test() [L768] int splverifierCounter ; [L769] int tmp ; [L770] int tmp___0 ; [L771] int tmp___1 ; [L772] int tmp___2 ; [L775] splverifierCounter = 0 [L777] COND TRUE 1 [L779] COND TRUE splverifierCounter < 4 [L785] tmp = __VERIFIER_nondet_int() [L787] COND TRUE \read(tmp) [L789] CALL waterRise() [L854] COND TRUE waterLevel < 2 [L855] waterLevel = waterLevel + 1 [L789] RET waterRise() [L795] tmp___0 = __VERIFIER_nondet_int() [L797] COND FALSE !(\read(tmp___0)) [L805] tmp___2 = __VERIFIER_nondet_int() [L807] COND FALSE !(\read(tmp___2)) [L813] tmp___1 = __VERIFIER_nondet_int() [L815] COND TRUE \read(tmp___1) [L817] CALL stopSystem() [L747] COND FALSE !(\read(pumpRunning)) [L754] systemActive = 0 [L817] RET stopSystem() [L824] CALL timeShift() [L599] COND FALSE !(\read(pumpRunning)) [L606] COND FALSE !(\read(systemActive)) [L614] CALL __utac_acc__Specification3_spec__1() [L552] int tmp ; [L553] int tmp___0 ; [L554] int tmp___1 ; [L558] CALL, EXPR isMethaneLevelCritical() [L875] int retValue_acc ; [L878] retValue_acc = methaneLevelCritical [L879] return (retValue_acc); [L558] RET, EXPR isMethaneLevelCritical() [L558] tmp = isMethaneLevelCritical() [L560] COND FALSE !(\read(tmp)) [L564] CALL, EXPR getWaterLevel() [L907] int retValue_acc ; [L910] retValue_acc = waterLevel [L911] return (retValue_acc); [L564] RET, EXPR getWaterLevel() [L564] tmp___0 = getWaterLevel() [L566] COND TRUE tmp___0 == 2 [L568] CALL, EXPR isPumpRunning() [L680] int retValue_acc ; [L683] retValue_acc = pumpRunning [L684] return (retValue_acc); [L568] RET, EXPR isPumpRunning() [L568] tmp___1 = isPumpRunning() [L570] COND FALSE !(\read(tmp___1)) [L574] CALL __automaton_fail() [L929] CALL reach_error() [L3] __assert_fail("0", "minepump_spec3_product20.cil.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 40 procedures, 632 locations, 5 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 24.1s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 18.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1169 SDtfs, 1777 SDslu, 1713 SDs, 0 SdLazy, 3217 SolverSat, 603 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 9.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 150 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 8.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=737occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 346 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...