/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_product60.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 19:58:16,208 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 19:58:16,211 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 19:58:16,247 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 19:58:16,248 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 19:58:16,249 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 19:58:16,251 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 19:58:16,254 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 19:58:16,256 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 19:58:16,258 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 19:58:16,259 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 19:58:16,261 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 19:58:16,261 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 19:58:16,263 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 19:58:16,264 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 19:58:16,266 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 19:58:16,267 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 19:58:16,268 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 19:58:16,271 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 19:58:16,274 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 19:58:16,276 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 19:58:16,281 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 19:58:16,285 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 19:58:16,287 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 19:58:16,302 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-23 19:58:16,303 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-23 19:58:16,303 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-23 19:58:16,304 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-23 19:58:16,305 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-23 19:58:16,306 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-23 19:58:16,306 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-23 19:58:16,307 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-23 19:58:16,308 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-23 19:58:16,309 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-23 19:58:16,310 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-23 19:58:16,311 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-23 19:58:16,312 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-23 19:58:16,312 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-23 19:58:16,312 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 19:58:16,313 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 19:58:16,314 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 19:58:16,315 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 19:58:16,329 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 19:58:16,329 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 19:58:16,331 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 19:58:16,331 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 19:58:16,331 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 19:58:16,331 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 19:58:16,332 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 19:58:16,332 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 19:58:16,332 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 19:58:16,332 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 19:58:16,333 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 19:58:16,333 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 19:58:16,333 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 19:58:16,333 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 19:58:16,334 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 19:58:16,334 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-23 19:58:16,334 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 19:58:16,334 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 19:58:16,334 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 19:58:16,335 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 19:58:16,335 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-23 19:58:16,335 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 19:58:16,335 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 19:58:16,698 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 19:58:16,730 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 19:58:16,734 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 19:58:16,735 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 19:58:16,736 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 19:58:16,737 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product60.cil.c [2020-10-23 19:58:16,824 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7abcabe8c/c5f3accd48d541aa8301cc7e0fc850aa/FLAGc4406ddc2 [2020-10-23 19:58:17,590 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 19:58:17,591 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product60.cil.c [2020-10-23 19:58:17,607 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7abcabe8c/c5f3accd48d541aa8301cc7e0fc850aa/FLAGc4406ddc2 [2020-10-23 19:58:17,623 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7abcabe8c/c5f3accd48d541aa8301cc7e0fc850aa [2020-10-23 19:58:17,626 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 19:58:17,634 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 19:58:17,636 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 19:58:17,636 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 19:58:17,640 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 19:58:17,641 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 07:58:17" (1/1) ... [2020-10-23 19:58:17,644 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f642d00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:58:17, skipping insertion in model container [2020-10-23 19:58:17,645 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 07:58:17" (1/1) ... [2020-10-23 19:58:17,654 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 19:58:17,700 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 19:58:18,047 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 19:58:18,075 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 19:58:18,192 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 19:58:18,246 INFO L208 MainTranslator]: Completed translation [2020-10-23 19:58:18,247 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:58:18 WrapperNode [2020-10-23 19:58:18,247 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 19:58:18,248 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 19:58:18,249 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 19:58:18,249 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 19:58:18,263 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:58:18" (1/1) ... [2020-10-23 19:58:18,264 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:58:18" (1/1) ... [2020-10-23 19:58:18,305 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:58:18" (1/1) ... [2020-10-23 19:58:18,305 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:58:18" (1/1) ... [2020-10-23 19:58:18,385 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:58:18" (1/1) ... [2020-10-23 19:58:18,400 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:58:18" (1/1) ... [2020-10-23 19:58:18,414 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:58:18" (1/1) ... [2020-10-23 19:58:18,421 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 19:58:18,422 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 19:58:18,422 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 19:58:18,422 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 19:58:18,423 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:58:18" (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 19:58:18,512 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 19:58:18,512 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 19:58:18,512 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-10-23 19:58:18,512 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 19:58:18,513 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-10-23 19:58:18,513 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-10-23 19:58:18,513 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-10-23 19:58:18,513 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-10-23 19:58:18,513 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-10-23 19:58:18,514 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2020-10-23 19:58:18,514 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-10-23 19:58:18,514 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-10-23 19:58:18,514 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-10-23 19:58:18,514 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-10-23 19:58:18,515 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-10-23 19:58:18,515 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-10-23 19:58:18,515 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-10-23 19:58:18,515 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-10-23 19:58:18,515 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-10-23 19:58:18,516 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-10-23 19:58:18,516 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-10-23 19:58:18,516 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-10-23 19:58:18,516 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-10-23 19:58:18,516 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-10-23 19:58:18,516 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-10-23 19:58:18,517 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-10-23 19:58:18,517 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-10-23 19:58:18,517 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-10-23 19:58:18,517 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-10-23 19:58:18,517 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-10-23 19:58:18,518 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-10-23 19:58:18,518 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-10-23 19:58:18,518 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-10-23 19:58:18,518 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-10-23 19:58:18,518 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-10-23 19:58:18,519 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-10-23 19:58:18,519 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-10-23 19:58:18,519 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-10-23 19:58:18,519 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-10-23 19:58:18,519 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-10-23 19:58:18,520 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-10-23 19:58:18,520 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-10-23 19:58:18,520 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-10-23 19:58:18,520 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 19:58:18,520 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 19:58:18,521 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 19:58:18,521 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 19:58:18,521 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 19:58:18,521 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-23 19:58:18,521 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-10-23 19:58:18,521 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-10-23 19:58:18,522 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-10-23 19:58:18,522 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-10-23 19:58:18,522 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-10-23 19:58:18,522 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-10-23 19:58:18,522 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-10-23 19:58:18,522 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-10-23 19:58:18,523 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-10-23 19:58:18,523 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-10-23 19:58:18,523 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-10-23 19:58:18,523 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-10-23 19:58:18,523 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-10-23 19:58:18,523 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-10-23 19:58:18,524 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-10-23 19:58:18,524 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-10-23 19:58:18,524 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-10-23 19:58:18,524 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-10-23 19:58:18,524 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-10-23 19:58:18,524 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-10-23 19:58:18,525 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-10-23 19:58:18,525 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-10-23 19:58:18,525 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-10-23 19:58:18,525 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2020-10-23 19:58:18,526 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-10-23 19:58:18,526 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-10-23 19:58:18,526 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-10-23 19:58:18,526 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-23 19:58:18,526 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-23 19:58:18,527 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-10-23 19:58:18,527 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-23 19:58:18,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-23 19:58:18,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 19:58:18,527 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-23 19:58:18,527 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-10-23 19:58:18,527 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 19:58:18,528 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-10-23 19:58:18,528 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-10-23 19:58:18,528 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 19:58:18,528 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-10-23 19:58:18,528 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-10-23 19:58:18,529 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-10-23 19:58:18,529 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-10-23 19:58:18,529 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-10-23 19:58:18,529 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-10-23 19:58:18,529 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-10-23 19:58:18,530 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-10-23 19:58:18,530 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-10-23 19:58:18,530 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-10-23 19:58:18,530 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 19:58:18,530 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 19:58:18,530 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 19:58:18,531 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 19:58:19,688 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 19:58:19,688 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-23 19:58:19,691 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 07:58:19 BoogieIcfgContainer [2020-10-23 19:58:19,692 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 19:58:19,693 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 19:58:19,693 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 19:58:19,697 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 19:58:19,697 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 07:58:17" (1/3) ... [2020-10-23 19:58:19,698 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e44d663 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 07:58:19, skipping insertion in model container [2020-10-23 19:58:19,698 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:58:18" (2/3) ... [2020-10-23 19:58:19,699 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e44d663 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 07:58:19, skipping insertion in model container [2020-10-23 19:58:19,699 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 07:58:19" (3/3) ... [2020-10-23 19:58:19,700 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product60.cil.c [2020-10-23 19:58:19,713 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-23 19:58:19,719 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-10-23 19:58:19,732 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-23 19:58:19,757 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 19:58:19,757 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 19:58:19,757 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-10-23 19:58:19,757 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 19:58:19,757 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 19:58:19,757 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 19:58:19,758 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 19:58:19,758 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 19:58:19,781 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states. [2020-10-23 19:58:19,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-10-23 19:58:19,802 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:58:19,803 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 19:58:19,804 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 19:58:19,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:58:19,811 INFO L82 PathProgramCache]: Analyzing trace with hash 1577845786, now seen corresponding path program 1 times [2020-10-23 19:58:19,820 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:58:19,821 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1630019936] [2020-10-23 19:58:19,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:58:19,903 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:58:20,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:20,627 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 19:58:20,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:58:20,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:20,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 19:58:20,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:20,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 19:58:20,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:20,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 19:58:20,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:20,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 19:58:20,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:20,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-23 19:58:20,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:20,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-10-23 19:58:20,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:20,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-10-23 19:58:20,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:20,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 19:58:20,816 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1630019936] [2020-10-23 19:58:20,817 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:58:20,818 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-23 19:58:20,818 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464876551] [2020-10-23 19:58:20,823 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-23 19:58:20,824 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:58:20,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-23 19:58:20,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-23 19:58:20,840 INFO L87 Difference]: Start difference. First operand 359 states. Second operand 3 states. [2020-10-23 19:58:22,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:58:22,729 INFO L93 Difference]: Finished difference Result 580 states and 684 transitions. [2020-10-23 19:58:22,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-23 19:58:22,734 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 159 [2020-10-23 19:58:22,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:58:22,752 INFO L225 Difference]: With dead ends: 580 [2020-10-23 19:58:22,753 INFO L226 Difference]: Without dead ends: 351 [2020-10-23 19:58:22,759 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 19:58:22,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2020-10-23 19:58:22,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 305. [2020-10-23 19:58:22,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 305 states. [2020-10-23 19:58:22,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 332 transitions. [2020-10-23 19:58:22,940 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 332 transitions. Word has length 159 [2020-10-23 19:58:22,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:58:22,941 INFO L481 AbstractCegarLoop]: Abstraction has 305 states and 332 transitions. [2020-10-23 19:58:22,942 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-23 19:58:22,942 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 332 transitions. [2020-10-23 19:58:22,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-23 19:58:22,947 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:58:22,947 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 19:58:22,947 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 19:58:22,948 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 19:58:22,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:58:22,948 INFO L82 PathProgramCache]: Analyzing trace with hash 1311937222, now seen corresponding path program 1 times [2020-10-23 19:58:22,949 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:58:22,949 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1055708045] [2020-10-23 19:58:22,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:58:22,953 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:58:23,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:23,528 WARN L193 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 19:58:23,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:58:23,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:23,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 19:58:23,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:23,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 19:58:23,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:23,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 19:58:23,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:23,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 19:58:23,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:23,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-23 19:58:23,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:23,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-23 19:58:23,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:23,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-10-23 19:58:23,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:23,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 19:58:23,655 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1055708045] [2020-10-23 19:58:23,655 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:58:23,655 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-23 19:58:23,655 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228690835] [2020-10-23 19:58:23,658 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-23 19:58:23,659 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:58:23,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-23 19:58:23,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-23 19:58:23,661 INFO L87 Difference]: Start difference. First operand 305 states and 332 transitions. Second operand 4 states. [2020-10-23 19:58:24,530 WARN L193 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:58:26,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:58:26,187 INFO L93 Difference]: Finished difference Result 484 states and 543 transitions. [2020-10-23 19:58:26,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-23 19:58:26,194 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 160 [2020-10-23 19:58:26,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:58:26,199 INFO L225 Difference]: With dead ends: 484 [2020-10-23 19:58:26,199 INFO L226 Difference]: Without dead ends: 334 [2020-10-23 19:58:26,202 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 19:58:26,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2020-10-23 19:58:26,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 295. [2020-10-23 19:58:26,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 295 states. [2020-10-23 19:58:26,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 319 transitions. [2020-10-23 19:58:26,312 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 319 transitions. Word has length 160 [2020-10-23 19:58:26,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:58:26,313 INFO L481 AbstractCegarLoop]: Abstraction has 295 states and 319 transitions. [2020-10-23 19:58:26,313 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-23 19:58:26,313 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 319 transitions. [2020-10-23 19:58:26,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-10-23 19:58:26,316 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:58:26,316 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 19:58:26,316 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 19:58:26,316 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 19:58:26,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:58:26,317 INFO L82 PathProgramCache]: Analyzing trace with hash -574555849, now seen corresponding path program 1 times [2020-10-23 19:58:26,317 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:58:26,318 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [934611020] [2020-10-23 19:58:26,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:58:26,321 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:58:26,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:26,945 WARN L193 SmtUtils]: Spent 457.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 19:58:26,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:58:26,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:27,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 19:58:27,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:27,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 19:58:27,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:27,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 19:58:27,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:27,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 19:58:27,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:27,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-10-23 19:58:27,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:27,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-23 19:58:27,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:27,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-10-23 19:58:27,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:27,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-10-23 19:58:27,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:27,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 19:58:27,160 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [934611020] [2020-10-23 19:58:27,160 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:58:27,162 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-23 19:58:27,164 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681748131] [2020-10-23 19:58:27,165 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-23 19:58:27,165 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:58:27,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-23 19:58:27,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-23 19:58:27,172 INFO L87 Difference]: Start difference. First operand 295 states and 319 transitions. Second operand 10 states. [2020-10-23 19:58:27,839 WARN L193 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-23 19:58:28,316 WARN L193 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:58:28,727 WARN L193 SmtUtils]: Spent 386.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 19:58:29,090 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:58:29,505 WARN L193 SmtUtils]: Spent 382.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:58:29,885 WARN L193 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:58:31,037 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:58:34,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:58:34,887 INFO L93 Difference]: Finished difference Result 826 states and 954 transitions. [2020-10-23 19:58:34,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-23 19:58:34,888 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 173 [2020-10-23 19:58:34,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:58:34,895 INFO L225 Difference]: With dead ends: 826 [2020-10-23 19:58:34,896 INFO L226 Difference]: Without dead ends: 646 [2020-10-23 19:58:34,898 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 19:58:34,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 646 states. [2020-10-23 19:58:35,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 646 to 545. [2020-10-23 19:58:35,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 545 states. [2020-10-23 19:58:35,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 608 transitions. [2020-10-23 19:58:35,127 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 608 transitions. Word has length 173 [2020-10-23 19:58:35,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:58:35,128 INFO L481 AbstractCegarLoop]: Abstraction has 545 states and 608 transitions. [2020-10-23 19:58:35,128 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-23 19:58:35,128 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 608 transitions. [2020-10-23 19:58:35,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-10-23 19:58:35,132 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:58:35,132 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 19:58:35,133 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-23 19:58:35,133 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 19:58:35,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:58:35,134 INFO L82 PathProgramCache]: Analyzing trace with hash 1999452209, now seen corresponding path program 1 times [2020-10-23 19:58:35,134 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:58:35,134 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1246590370] [2020-10-23 19:58:35,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:58:35,137 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:58:35,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:35,599 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 19:58:35,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:58:35,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:35,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 19:58:35,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:35,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 19:58:35,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:35,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 19:58:35,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:35,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 19:58:35,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:35,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-23 19:58:35,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:35,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-10-23 19:58:35,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:35,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-23 19:58:35,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:35,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2020-10-23 19:58:35,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:35,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 19:58:35,760 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1246590370] [2020-10-23 19:58:35,760 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:58:35,760 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-23 19:58:35,760 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137792289] [2020-10-23 19:58:35,761 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-23 19:58:35,761 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:58:35,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-23 19:58:35,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-23 19:58:35,763 INFO L87 Difference]: Start difference. First operand 545 states and 608 transitions. Second operand 9 states. [2020-10-23 19:58:36,571 WARN L193 SmtUtils]: Spent 385.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-23 19:58:39,084 WARN L193 SmtUtils]: Spent 369.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:58:39,528 WARN L193 SmtUtils]: Spent 367.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:58:39,991 WARN L193 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:58:40,483 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-23 19:58:40,923 WARN L193 SmtUtils]: Spent 397.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:58:41,336 WARN L193 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:58:41,710 WARN L193 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:58:43,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:58:43,406 INFO L93 Difference]: Finished difference Result 1494 states and 1780 transitions. [2020-10-23 19:58:43,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-23 19:58:43,407 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 178 [2020-10-23 19:58:43,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:58:43,417 INFO L225 Difference]: With dead ends: 1494 [2020-10-23 19:58:43,417 INFO L226 Difference]: Without dead ends: 1064 [2020-10-23 19:58:43,420 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 19:58:43,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1064 states. [2020-10-23 19:58:43,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1064 to 957. [2020-10-23 19:58:43,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 957 states. [2020-10-23 19:58:43,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 957 states to 957 states and 1091 transitions. [2020-10-23 19:58:43,888 INFO L78 Accepts]: Start accepts. Automaton has 957 states and 1091 transitions. Word has length 178 [2020-10-23 19:58:43,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:58:43,889 INFO L481 AbstractCegarLoop]: Abstraction has 957 states and 1091 transitions. [2020-10-23 19:58:43,889 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-23 19:58:43,889 INFO L276 IsEmpty]: Start isEmpty. Operand 957 states and 1091 transitions. [2020-10-23 19:58:43,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2020-10-23 19:58:43,894 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:58:43,894 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 19:58:43,895 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-23 19:58:43,895 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 19:58:43,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:58:43,896 INFO L82 PathProgramCache]: Analyzing trace with hash 2012050512, now seen corresponding path program 1 times [2020-10-23 19:58:43,896 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:58:43,896 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [240093975] [2020-10-23 19:58:43,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:58:43,899 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:58:43,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:44,291 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 19:58:44,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:58:44,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:44,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 19:58:44,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:44,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 19:58:44,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:44,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 19:58:44,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:44,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 19:58:44,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:44,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-23 19:58:44,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:44,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-23 19:58:44,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:44,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-10-23 19:58:44,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:44,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-10-23 19:58:44,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:44,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-10-23 19:58:44,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:44,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 19:58:44,435 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [240093975] [2020-10-23 19:58:44,436 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:58:44,436 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-23 19:58:44,436 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738758629] [2020-10-23 19:58:44,437 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-23 19:58:44,437 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:58:44,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-23 19:58:44,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-23 19:58:44,438 INFO L87 Difference]: Start difference. First operand 957 states and 1091 transitions. Second operand 6 states. [2020-10-23 19:58:45,080 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-23 19:58:48,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:58:48,287 INFO L93 Difference]: Finished difference Result 2139 states and 2552 transitions. [2020-10-23 19:58:48,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-23 19:58:48,288 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 183 [2020-10-23 19:58:48,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:58:48,298 INFO L225 Difference]: With dead ends: 2139 [2020-10-23 19:58:48,299 INFO L226 Difference]: Without dead ends: 1297 [2020-10-23 19:58:48,302 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-10-23 19:58:48,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1297 states. [2020-10-23 19:58:48,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1297 to 1196. [2020-10-23 19:58:48,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1196 states. [2020-10-23 19:58:48,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1196 states to 1196 states and 1359 transitions. [2020-10-23 19:58:48,884 INFO L78 Accepts]: Start accepts. Automaton has 1196 states and 1359 transitions. Word has length 183 [2020-10-23 19:58:48,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:58:48,884 INFO L481 AbstractCegarLoop]: Abstraction has 1196 states and 1359 transitions. [2020-10-23 19:58:48,884 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-23 19:58:48,885 INFO L276 IsEmpty]: Start isEmpty. Operand 1196 states and 1359 transitions. [2020-10-23 19:58:48,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2020-10-23 19:58:48,888 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:58:48,889 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 19:58:48,889 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-23 19:58:48,889 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 19:58:48,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:58:48,890 INFO L82 PathProgramCache]: Analyzing trace with hash 1491161077, now seen corresponding path program 1 times [2020-10-23 19:58:48,890 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:58:48,890 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1337841460] [2020-10-23 19:58:48,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:58:48,894 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:58:48,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 19:58:48,970 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 19:58:49,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 19:58:49,049 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 19:58:49,253 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-23 19:58:49,254 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-23 19:58:49,256 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-23 19:58:49,292 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 07:58:49 BoogieIcfgContainer [2020-10-23 19:58:49,292 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 19:58:49,295 INFO L168 Benchmark]: Toolchain (without parser) took 31665.24 ms. Allocated memory was 151.0 MB in the beginning and 625.0 MB in the end (delta: 474.0 MB). Free memory was 127.0 MB in the beginning and 265.1 MB in the end (delta: -138.0 MB). Peak memory consumption was 336.4 MB. Max. memory is 8.0 GB. [2020-10-23 19:58:49,296 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 151.0 MB. Free memory is still 126.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 19:58:49,302 INFO L168 Benchmark]: CACSL2BoogieTranslator took 611.45 ms. Allocated memory is still 151.0 MB. Free memory was 126.2 MB in the beginning and 104.0 MB in the end (delta: 22.3 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2020-10-23 19:58:49,304 INFO L168 Benchmark]: Boogie Preprocessor took 172.68 ms. Allocated memory is still 151.0 MB. Free memory was 104.0 MB in the beginning and 132.8 MB in the end (delta: -28.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 8.0 GB. [2020-10-23 19:58:49,304 INFO L168 Benchmark]: RCFGBuilder took 1269.84 ms. Allocated memory is still 151.0 MB. Free memory was 132.8 MB in the beginning and 85.7 MB in the end (delta: 47.0 MB). Peak memory consumption was 66.4 MB. Max. memory is 8.0 GB. [2020-10-23 19:58:49,305 INFO L168 Benchmark]: TraceAbstraction took 29598.82 ms. Allocated memory was 151.0 MB in the beginning and 625.0 MB in the end (delta: 474.0 MB). Free memory was 85.2 MB in the beginning and 265.1 MB in the end (delta: -179.8 MB). Peak memory consumption was 293.6 MB. Max. memory is 8.0 GB. [2020-10-23 19:58:49,317 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 151.0 MB. Free memory is still 126.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 611.45 ms. Allocated memory is still 151.0 MB. Free memory was 126.2 MB in the beginning and 104.0 MB in the end (delta: 22.3 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 172.68 ms. Allocated memory is still 151.0 MB. Free memory was 104.0 MB in the beginning and 132.8 MB in the end (delta: -28.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1269.84 ms. Allocated memory is still 151.0 MB. Free memory was 132.8 MB in the beginning and 85.7 MB in the end (delta: 47.0 MB). Peak memory consumption was 66.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 29598.82 ms. Allocated memory was 151.0 MB in the beginning and 625.0 MB in the end (delta: 474.0 MB). Free memory was 85.2 MB in the beginning and 265.1 MB in the end (delta: -179.8 MB). Peak memory consumption was 293.6 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L126] int pumpRunning = 0; [L127] int systemActive = 1; [L570] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L814] int waterLevel = 1; [L815] int methaneLevelCritical = 0; [L917] int cleanupTimeShifts = 4; [L990] int retValue_acc ; [L991] int tmp ; [L995] FCALL select_helpers() [L996] FCALL select_features() [L997] CALL, EXPR valid_product() [L805] int retValue_acc ; [L808] retValue_acc = 1 [L809] return (retValue_acc); [L997] RET, EXPR valid_product() [L997] tmp = valid_product() [L999] COND TRUE \read(tmp) [L1001] FCALL setup() [L1002] CALL runTest() [L984] CALL test() [L49] int splverifierCounter ; [L50] int tmp ; [L51] int tmp___0 ; [L52] int tmp___1 ; [L53] int tmp___2 ; [L56] splverifierCounter = 0 [L58] COND TRUE 1 [L60] COND TRUE splverifierCounter < 4 [L66] tmp = __VERIFIER_nondet_int() [L68] COND TRUE \read(tmp) [L70] CALL waterRise() [L832] COND TRUE waterLevel < 2 [L833] waterLevel = waterLevel + 1 [L70] RET waterRise() [L76] tmp___0 = __VERIFIER_nondet_int() [L78] COND FALSE !(\read(tmp___0)) [L86] tmp___2 = __VERIFIER_nondet_int() [L88] COND FALSE !(\read(tmp___2)) [L94] tmp___1 = __VERIFIER_nondet_int() [L96] COND TRUE \read(tmp___1) [L98] CALL stopSystem() [L345] COND FALSE !(\read(pumpRunning)) [L352] systemActive = 0 [L98] RET stopSystem() [L105] CALL timeShift() [L134] COND FALSE !(\read(pumpRunning)) [L141] COND FALSE !(\read(systemActive)) [L149] CALL __utac_acc__Specification3_spec__1() [L368] int tmp ; [L369] int tmp___0 ; [L370] int tmp___1 ; [L374] CALL, EXPR isMethaneLevelCritical() [L853] int retValue_acc ; [L856] retValue_acc = methaneLevelCritical [L857] return (retValue_acc); [L374] RET, EXPR isMethaneLevelCritical() [L374] tmp = isMethaneLevelCritical() [L376] COND FALSE !(\read(tmp)) [L380] CALL, EXPR getWaterLevel() [L885] int retValue_acc ; [L888] retValue_acc = waterLevel [L889] return (retValue_acc); [L380] RET, EXPR getWaterLevel() [L380] tmp___0 = getWaterLevel() [L382] COND TRUE tmp___0 == 2 [L384] CALL, EXPR isPumpRunning() [L259] int retValue_acc ; [L262] retValue_acc = pumpRunning [L263] return (retValue_acc); [L384] RET, EXPR isPumpRunning() [L384] tmp___1 = isPumpRunning() [L386] COND FALSE !(\read(tmp___1)) [L390] CALL __automaton_fail() [L771] CALL reach_error() [L3] __assert_fail("0", "minepump_spec3_product60.cil.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 44 procedures, 675 locations, 5 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 29.5s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 23.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1457 SDtfs, 2449 SDslu, 1707 SDs, 0 SdLazy, 4254 SolverSat, 855 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 13.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 151 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 8.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1196occurred 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: 1.5s AutomataMinimizationTime, 5 MinimizatonAttempts, 394 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...