/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_spec4_product38.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 20:09:52,516 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 20:09:52,524 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 20:09:52,591 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 20:09:52,592 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 20:09:52,597 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 20:09:52,603 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 20:09:52,615 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 20:09:52,619 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 20:09:52,625 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 20:09:52,627 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 20:09:52,628 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 20:09:52,629 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 20:09:52,632 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 20:09:52,635 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 20:09:52,639 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 20:09:52,640 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 20:09:52,646 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 20:09:52,674 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 20:09:52,680 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 20:09:52,686 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 20:09:52,687 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 20:09:52,689 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 20:09:52,691 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 20:09:52,702 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-23 20:09:52,703 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-23 20:09:52,706 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-23 20:09:52,708 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-23 20:09:52,711 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-23 20:09:52,712 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-23 20:09:52,713 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-23 20:09:52,714 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-23 20:09:52,717 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-23 20:09:52,719 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-23 20:09:52,721 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-23 20:09:52,721 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-23 20:09:52,723 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-23 20:09:52,723 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-23 20:09:52,723 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 20:09:52,725 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 20:09:52,725 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 20:09:52,726 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 20:09:52,755 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 20:09:52,755 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 20:09:52,758 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 20:09:52,758 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 20:09:52,759 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 20:09:52,759 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 20:09:52,759 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 20:09:52,759 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 20:09:52,760 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 20:09:52,760 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 20:09:52,760 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 20:09:52,760 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 20:09:52,760 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 20:09:52,761 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 20:09:52,761 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 20:09:52,761 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-23 20:09:52,761 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 20:09:52,762 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 20:09:52,762 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 20:09:52,762 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 20:09:52,762 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-23 20:09:52,763 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 20:09:52,763 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 20:09:53,222 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 20:09:53,273 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 20:09:53,277 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 20:09:53,280 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 20:09:53,281 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 20:09:53,283 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product38.cil.c [2020-10-23 20:09:53,395 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/abf70dfbd/bfd29e5d0c664019a2b5194c2a498479/FLAG3e072b7e9 [2020-10-23 20:09:54,330 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 20:09:54,330 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product38.cil.c [2020-10-23 20:09:54,352 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/abf70dfbd/bfd29e5d0c664019a2b5194c2a498479/FLAG3e072b7e9 [2020-10-23 20:09:54,610 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/abf70dfbd/bfd29e5d0c664019a2b5194c2a498479 [2020-10-23 20:09:54,614 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 20:09:54,622 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 20:09:54,629 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 20:09:54,629 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 20:09:54,634 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 20:09:54,635 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:09:54" (1/1) ... [2020-10-23 20:09:54,645 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@398f0ae3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:09:54, skipping insertion in model container [2020-10-23 20:09:54,645 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:09:54" (1/1) ... [2020-10-23 20:09:54,655 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 20:09:54,709 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 20:09:55,144 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 20:09:55,167 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 20:09:55,296 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 20:09:55,341 INFO L208 MainTranslator]: Completed translation [2020-10-23 20:09:55,341 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:09:55 WrapperNode [2020-10-23 20:09:55,342 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 20:09:55,343 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 20:09:55,344 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 20:09:55,344 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 20:09:55,364 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:09:55" (1/1) ... [2020-10-23 20:09:55,364 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:09:55" (1/1) ... [2020-10-23 20:09:55,386 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:09:55" (1/1) ... [2020-10-23 20:09:55,387 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:09:55" (1/1) ... [2020-10-23 20:09:55,461 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:09:55" (1/1) ... [2020-10-23 20:09:55,471 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:09:55" (1/1) ... [2020-10-23 20:09:55,477 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:09:55" (1/1) ... [2020-10-23 20:09:55,485 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 20:09:55,487 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 20:09:55,487 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 20:09:55,487 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 20:09:55,489 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:09:55" (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 20:09:55,593 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 20:09:55,593 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 20:09:55,594 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-10-23 20:09:55,594 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 20:09:55,594 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-10-23 20:09:55,594 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-10-23 20:09:55,595 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-10-23 20:09:55,595 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-10-23 20:09:55,595 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 20:09:55,595 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-10-23 20:09:55,596 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-10-23 20:09:55,596 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-10-23 20:09:55,596 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-10-23 20:09:55,596 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-10-23 20:09:55,596 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-10-23 20:09:55,596 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-10-23 20:09:55,597 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-10-23 20:09:55,597 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-10-23 20:09:55,597 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-10-23 20:09:55,597 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-10-23 20:09:55,597 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-10-23 20:09:55,598 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-10-23 20:09:55,598 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-10-23 20:09:55,598 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-10-23 20:09:55,598 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-10-23 20:09:55,599 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-10-23 20:09:55,599 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-10-23 20:09:55,599 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-10-23 20:09:55,599 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-10-23 20:09:55,599 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-10-23 20:09:55,600 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-10-23 20:09:55,600 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-10-23 20:09:55,600 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-10-23 20:09:55,600 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-10-23 20:09:55,600 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-10-23 20:09:55,601 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-10-23 20:09:55,601 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-10-23 20:09:55,601 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-10-23 20:09:55,601 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-10-23 20:09:55,601 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-10-23 20:09:55,602 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 20:09:55,602 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 20:09:55,602 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 20:09:55,602 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 20:09:55,602 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-23 20:09:55,603 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-10-23 20:09:55,603 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-10-23 20:09:55,603 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-10-23 20:09:55,603 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-10-23 20:09:55,603 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-10-23 20:09:55,603 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-10-23 20:09:55,604 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-10-23 20:09:55,604 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-10-23 20:09:55,604 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-10-23 20:09:55,604 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-10-23 20:09:55,604 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-10-23 20:09:55,605 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-10-23 20:09:55,605 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-10-23 20:09:55,605 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 20:09:55,605 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-10-23 20:09:55,605 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-10-23 20:09:55,606 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-10-23 20:09:55,606 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-10-23 20:09:55,606 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-10-23 20:09:55,606 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-10-23 20:09:55,606 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-10-23 20:09:55,607 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-10-23 20:09:55,607 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-10-23 20:09:55,607 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-10-23 20:09:55,607 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-10-23 20:09:55,607 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-10-23 20:09:55,608 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-10-23 20:09:55,608 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-10-23 20:09:55,608 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-10-23 20:09:55,608 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-10-23 20:09:55,608 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-23 20:09:55,609 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-23 20:09:55,609 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-10-23 20:09:55,609 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-23 20:09:55,609 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-23 20:09:55,609 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 20:09:55,610 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-23 20:09:55,610 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-10-23 20:09:55,610 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 20:09:55,610 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-10-23 20:09:55,610 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-10-23 20:09:55,611 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 20:09:55,611 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-10-23 20:09:55,611 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-10-23 20:09:55,611 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-10-23 20:09:55,611 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-10-23 20:09:55,612 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 20:09:55,612 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 20:09:55,612 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 20:09:57,350 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 20:09:57,351 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-23 20:09:57,355 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:09:57 BoogieIcfgContainer [2020-10-23 20:09:57,355 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 20:09:57,358 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 20:09:57,358 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 20:09:57,363 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 20:09:57,363 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 08:09:54" (1/3) ... [2020-10-23 20:09:57,364 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d117ab1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:09:57, skipping insertion in model container [2020-10-23 20:09:57,364 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:09:55" (2/3) ... [2020-10-23 20:09:57,365 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d117ab1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:09:57, skipping insertion in model container [2020-10-23 20:09:57,366 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:09:57" (3/3) ... [2020-10-23 20:09:57,368 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product38.cil.c [2020-10-23 20:09:57,386 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-23 20:09:57,395 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-10-23 20:09:57,412 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-23 20:09:57,459 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 20:09:57,459 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 20:09:57,459 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-10-23 20:09:57,460 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 20:09:57,460 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 20:09:57,461 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 20:09:57,461 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 20:09:57,461 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 20:09:57,502 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states. [2020-10-23 20:09:57,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-23 20:09:57,549 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:09:57,553 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] [2020-10-23 20:09:57,554 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 20:09:57,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:09:57,566 INFO L82 PathProgramCache]: Analyzing trace with hash -601627544, now seen corresponding path program 1 times [2020-10-23 20:09:57,581 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:09:57,582 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [228595530] [2020-10-23 20:09:57,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:09:57,675 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:09:57,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:09:58,573 WARN L193 SmtUtils]: Spent 370.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 20:09:58,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:09:58,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:09:58,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 20:09:58,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:09:58,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 20:09:58,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:09:58,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 20:09:58,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:09:58,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 20:09:58,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:09:58,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-23 20:09:58,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:09:58,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-23 20:09:58,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:09:58,756 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 20:09:58,763 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [228595530] [2020-10-23 20:09:58,766 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:09:58,767 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-23 20:09:58,768 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544238622] [2020-10-23 20:09:58,786 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-23 20:09:58,786 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:09:58,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-23 20:09:58,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-23 20:09:58,803 INFO L87 Difference]: Start difference. First operand 319 states. Second operand 3 states. [2020-10-23 20:10:00,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:10:00,851 INFO L93 Difference]: Finished difference Result 496 states and 587 transitions. [2020-10-23 20:10:00,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-23 20:10:00,854 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 148 [2020-10-23 20:10:00,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:10:00,876 INFO L225 Difference]: With dead ends: 496 [2020-10-23 20:10:00,877 INFO L226 Difference]: Without dead ends: 307 [2020-10-23 20:10:00,884 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-23 20:10:00,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2020-10-23 20:10:01,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 265. [2020-10-23 20:10:01,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 265 states. [2020-10-23 20:10:01,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 286 transitions. [2020-10-23 20:10:01,177 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 286 transitions. Word has length 148 [2020-10-23 20:10:01,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:10:01,181 INFO L481 AbstractCegarLoop]: Abstraction has 265 states and 286 transitions. [2020-10-23 20:10:01,181 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-23 20:10:01,181 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 286 transitions. [2020-10-23 20:10:01,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-23 20:10:01,198 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:10:01,199 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] [2020-10-23 20:10:01,200 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 20:10:01,200 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 20:10:01,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:10:01,202 INFO L82 PathProgramCache]: Analyzing trace with hash -1081954837, now seen corresponding path program 1 times [2020-10-23 20:10:01,202 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:10:01,203 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [353070981] [2020-10-23 20:10:01,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:10:01,218 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:10:01,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:01,846 WARN L193 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 20:10:01,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:10:01,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:01,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 20:10:01,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:01,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 20:10:01,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:01,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 20:10:01,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:01,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 20:10:01,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:01,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-23 20:10:01,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:01,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-10-23 20:10:01,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:01,954 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 20:10:01,955 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [353070981] [2020-10-23 20:10:01,955 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:10:01,956 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-23 20:10:01,956 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146073484] [2020-10-23 20:10:01,958 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-23 20:10:01,960 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:10:01,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-23 20:10:01,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-23 20:10:01,961 INFO L87 Difference]: Start difference. First operand 265 states and 286 transitions. Second operand 4 states. [2020-10-23 20:10:02,904 WARN L193 SmtUtils]: Spent 386.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:10:04,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:10:04,357 INFO L93 Difference]: Finished difference Result 406 states and 454 transitions. [2020-10-23 20:10:04,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-23 20:10:04,358 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 149 [2020-10-23 20:10:04,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:10:04,369 INFO L225 Difference]: With dead ends: 406 [2020-10-23 20:10:04,370 INFO L226 Difference]: Without dead ends: 290 [2020-10-23 20:10:04,378 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 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 20:10:04,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2020-10-23 20:10:04,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 255. [2020-10-23 20:10:04,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255 states. [2020-10-23 20:10:04,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 273 transitions. [2020-10-23 20:10:04,569 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 273 transitions. Word has length 149 [2020-10-23 20:10:04,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:10:04,570 INFO L481 AbstractCegarLoop]: Abstraction has 255 states and 273 transitions. [2020-10-23 20:10:04,570 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-23 20:10:04,570 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 273 transitions. [2020-10-23 20:10:04,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-10-23 20:10:04,573 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:10:04,573 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] [2020-10-23 20:10:04,573 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 20:10:04,573 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 20:10:04,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:10:04,574 INFO L82 PathProgramCache]: Analyzing trace with hash 1679312297, now seen corresponding path program 1 times [2020-10-23 20:10:04,574 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:10:04,575 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [492683007] [2020-10-23 20:10:04,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:10:04,579 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:10:04,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:05,059 WARN L193 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 20:10:05,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:10:05,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:05,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 20:10:05,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:05,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 20:10:05,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:05,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 20:10:05,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:05,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 20:10:05,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:05,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-10-23 20:10:05,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:05,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-23 20:10:05,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:05,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-23 20:10:05,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:05,304 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 20:10:05,305 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [492683007] [2020-10-23 20:10:05,306 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:10:05,306 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-23 20:10:05,306 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444327032] [2020-10-23 20:10:05,308 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-23 20:10:05,309 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:10:05,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-23 20:10:05,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-23 20:10:05,313 INFO L87 Difference]: Start difference. First operand 255 states and 273 transitions. Second operand 10 states. [2020-10-23 20:10:06,186 WARN L193 SmtUtils]: Spent 372.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-23 20:10:06,758 WARN L193 SmtUtils]: Spent 421.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:10:07,188 WARN L193 SmtUtils]: Spent 402.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 20:10:07,627 WARN L193 SmtUtils]: Spent 377.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 20:10:08,081 WARN L193 SmtUtils]: Spent 409.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:10:08,550 WARN L193 SmtUtils]: Spent 431.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 20:10:11,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:10:11,037 INFO L93 Difference]: Finished difference Result 452 states and 516 transitions. [2020-10-23 20:10:11,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-23 20:10:11,041 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 162 [2020-10-23 20:10:11,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:10:11,045 INFO L225 Difference]: With dead ends: 452 [2020-10-23 20:10:11,046 INFO L226 Difference]: Without dead ends: 312 [2020-10-23 20:10:11,048 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-10-23 20:10:11,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2020-10-23 20:10:11,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 255. [2020-10-23 20:10:11,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255 states. [2020-10-23 20:10:11,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 272 transitions. [2020-10-23 20:10:11,222 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 272 transitions. Word has length 162 [2020-10-23 20:10:11,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:10:11,227 INFO L481 AbstractCegarLoop]: Abstraction has 255 states and 272 transitions. [2020-10-23 20:10:11,227 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-23 20:10:11,227 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 272 transitions. [2020-10-23 20:10:11,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-10-23 20:10:11,232 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:10:11,236 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] [2020-10-23 20:10:11,237 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-23 20:10:11,237 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 20:10:11,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:10:11,238 INFO L82 PathProgramCache]: Analyzing trace with hash 1866877712, now seen corresponding path program 1 times [2020-10-23 20:10:11,238 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:10:11,238 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1541288593] [2020-10-23 20:10:11,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:10:11,246 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:10:11,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:11,771 WARN L193 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 20:10:11,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:10:11,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:11,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 20:10:11,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:11,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 20:10:11,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:11,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 20:10:11,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:11,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 20:10:11,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:11,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-10-23 20:10:11,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:11,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-10-23 20:10:11,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:11,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:10:11,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:11,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:10:11,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:11,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-10-23 20:10:11,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:11,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2020-10-23 20:10:11,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:11,966 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 20:10:11,968 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1541288593] [2020-10-23 20:10:11,969 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:10:11,969 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-23 20:10:11,969 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631592904] [2020-10-23 20:10:11,970 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-23 20:10:11,971 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:10:11,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-23 20:10:11,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-23 20:10:11,972 INFO L87 Difference]: Start difference. First operand 255 states and 272 transitions. Second operand 7 states. [2020-10-23 20:10:12,812 WARN L193 SmtUtils]: Spent 379.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-23 20:10:15,233 WARN L193 SmtUtils]: Spent 385.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:10:16,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:10:16,578 INFO L93 Difference]: Finished difference Result 634 states and 748 transitions. [2020-10-23 20:10:16,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-23 20:10:16,579 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 175 [2020-10-23 20:10:16,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:10:16,586 INFO L225 Difference]: With dead ends: 634 [2020-10-23 20:10:16,586 INFO L226 Difference]: Without dead ends: 494 [2020-10-23 20:10:16,587 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-10-23 20:10:16,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 494 states. [2020-10-23 20:10:16,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 494 to 365. [2020-10-23 20:10:16,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 365 states. [2020-10-23 20:10:16,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 391 transitions. [2020-10-23 20:10:16,727 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 391 transitions. Word has length 175 [2020-10-23 20:10:16,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:10:16,728 INFO L481 AbstractCegarLoop]: Abstraction has 365 states and 391 transitions. [2020-10-23 20:10:16,728 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-23 20:10:16,728 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 391 transitions. [2020-10-23 20:10:16,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-10-23 20:10:16,732 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:10:16,732 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:10:16,732 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-23 20:10:16,732 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 20:10:16,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:10:16,733 INFO L82 PathProgramCache]: Analyzing trace with hash 1008810375, now seen corresponding path program 1 times [2020-10-23 20:10:16,733 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:10:16,734 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [568030292] [2020-10-23 20:10:16,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:10:16,737 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:10:16,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:17,217 WARN L193 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 20:10:17,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:10:17,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:17,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 20:10:17,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:17,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 20:10:17,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:17,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 20:10:17,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:17,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 20:10:17,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:17,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-10-23 20:10:17,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:17,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-10-23 20:10:17,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:17,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:10:17,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:17,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:10:17,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:17,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 20:10:17,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:17,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 20:10:17,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:17,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-10-23 20:10:17,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:17,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2020-10-23 20:10:17,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:17,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:10:17,588 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [568030292] [2020-10-23 20:10:17,588 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:10:17,588 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-23 20:10:17,588 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955133902] [2020-10-23 20:10:17,589 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-23 20:10:17,589 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:10:17,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-23 20:10:17,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2020-10-23 20:10:17,590 INFO L87 Difference]: Start difference. First operand 365 states and 391 transitions. Second operand 15 states. [2020-10-23 20:10:18,453 WARN L193 SmtUtils]: Spent 371.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-23 20:10:19,030 WARN L193 SmtUtils]: Spent 394.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:10:19,450 WARN L193 SmtUtils]: Spent 383.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:10:19,884 WARN L193 SmtUtils]: Spent 367.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 20:10:20,333 WARN L193 SmtUtils]: Spent 398.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:10:20,763 WARN L193 SmtUtils]: Spent 378.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 20:10:21,773 WARN L193 SmtUtils]: Spent 374.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:10:23,641 WARN L193 SmtUtils]: Spent 392.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 20:10:24,074 WARN L193 SmtUtils]: Spent 369.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:10:24,523 WARN L193 SmtUtils]: Spent 372.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:10:24,992 WARN L193 SmtUtils]: Spent 397.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 20:10:25,413 WARN L193 SmtUtils]: Spent 383.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:10:25,844 WARN L193 SmtUtils]: Spent 386.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:10:26,289 WARN L193 SmtUtils]: Spent 400.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:10:26,730 WARN L193 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:10:27,227 WARN L193 SmtUtils]: Spent 391.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 20:10:27,717 WARN L193 SmtUtils]: Spent 386.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:10:30,607 WARN L193 SmtUtils]: Spent 385.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-23 20:10:31,058 WARN L193 SmtUtils]: Spent 379.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 20:10:31,640 WARN L193 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 20:10:33,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:10:33,431 INFO L93 Difference]: Finished difference Result 1281 states and 1611 transitions. [2020-10-23 20:10:33,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-23 20:10:33,432 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 199 [2020-10-23 20:10:33,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:10:33,443 INFO L225 Difference]: With dead ends: 1281 [2020-10-23 20:10:33,443 INFO L226 Difference]: Without dead ends: 1031 [2020-10-23 20:10:33,446 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 338 ImplicationChecksByTransitivity, 8.9s TimeCoverageRelationStatistics Valid=386, Invalid=1336, Unknown=0, NotChecked=0, Total=1722 [2020-10-23 20:10:33,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1031 states. [2020-10-23 20:10:33,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1031 to 732. [2020-10-23 20:10:33,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 732 states. [2020-10-23 20:10:33,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 732 states to 732 states and 811 transitions. [2020-10-23 20:10:33,834 INFO L78 Accepts]: Start accepts. Automaton has 732 states and 811 transitions. Word has length 199 [2020-10-23 20:10:33,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:10:33,834 INFO L481 AbstractCegarLoop]: Abstraction has 732 states and 811 transitions. [2020-10-23 20:10:33,834 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-23 20:10:33,835 INFO L276 IsEmpty]: Start isEmpty. Operand 732 states and 811 transitions. [2020-10-23 20:10:33,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2020-10-23 20:10:33,841 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:10:33,842 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:10:33,842 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-23 20:10:33,843 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 20:10:33,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:10:33,844 INFO L82 PathProgramCache]: Analyzing trace with hash -106349983, now seen corresponding path program 1 times [2020-10-23 20:10:33,844 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:10:33,844 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1453659157] [2020-10-23 20:10:33,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:10:34,061 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:10:34,064 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:10:34,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:34,512 WARN L193 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 20:10:34,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:10:34,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:34,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 20:10:34,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:34,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 20:10:34,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:34,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 20:10:34,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:34,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 20:10:34,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:34,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-10-23 20:10:34,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:34,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-23 20:10:34,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:34,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-10-23 20:10:34,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:34,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:10:34,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:34,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:10:34,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:34,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:10:34,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:34,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 20:10:34,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:34,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 20:10:34,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:34,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-23 20:10:34,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:34,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:10:34,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:34,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2020-10-23 20:10:34,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:34,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-10-23 20:10:34,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:34,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-23 20:10:34,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:34,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-23 20:10:34,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:34,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:10:34,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:34,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 20:10:34,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:34,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-23 20:10:34,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:34,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-10-23 20:10:34,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:34,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2020-10-23 20:10:34,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:34,966 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 20:10:34,967 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1453659157] [2020-10-23 20:10:34,968 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:10:34,969 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-23 20:10:34,969 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000864498] [2020-10-23 20:10:34,970 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-23 20:10:34,970 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:10:34,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-23 20:10:34,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-10-23 20:10:34,973 INFO L87 Difference]: Start difference. First operand 732 states and 811 transitions. Second operand 12 states. [2020-10-23 20:10:36,961 WARN L193 SmtUtils]: Spent 373.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 20:10:37,407 WARN L193 SmtUtils]: Spent 415.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:10:37,882 WARN L193 SmtUtils]: Spent 426.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-23 20:10:38,329 WARN L193 SmtUtils]: Spent 376.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:10:38,764 WARN L193 SmtUtils]: Spent 373.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:10:39,151 WARN L193 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:10:41,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:10:41,728 INFO L93 Difference]: Finished difference Result 1658 states and 1989 transitions. [2020-10-23 20:10:41,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-23 20:10:41,729 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 280 [2020-10-23 20:10:41,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:10:41,738 INFO L225 Difference]: With dead ends: 1658 [2020-10-23 20:10:41,738 INFO L226 Difference]: Without dead ends: 1041 [2020-10-23 20:10:41,742 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2020-10-23 20:10:41,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1041 states. [2020-10-23 20:10:42,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1041 to 759. [2020-10-23 20:10:42,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 759 states. [2020-10-23 20:10:42,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 759 states to 759 states and 840 transitions. [2020-10-23 20:10:42,096 INFO L78 Accepts]: Start accepts. Automaton has 759 states and 840 transitions. Word has length 280 [2020-10-23 20:10:42,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:10:42,097 INFO L481 AbstractCegarLoop]: Abstraction has 759 states and 840 transitions. [2020-10-23 20:10:42,097 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-23 20:10:42,097 INFO L276 IsEmpty]: Start isEmpty. Operand 759 states and 840 transitions. [2020-10-23 20:10:42,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2020-10-23 20:10:42,106 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:10:42,107 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:10:42,107 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-23 20:10:42,108 INFO L429 AbstractCegarLoop]: === Iteration 7 === [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 20:10:42,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:10:42,108 INFO L82 PathProgramCache]: Analyzing trace with hash 1710094433, now seen corresponding path program 1 times [2020-10-23 20:10:42,109 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:10:42,109 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2084447031] [2020-10-23 20:10:42,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:10:42,389 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:10:42,394 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:10:42,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:42,949 WARN L193 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 20:10:42,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:10:42,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:42,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 20:10:42,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:42,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 20:10:42,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:42,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 20:10:42,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:43,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 20:10:43,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:43,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-10-23 20:10:43,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:43,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-23 20:10:43,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:43,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-10-23 20:10:43,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:43,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:10:43,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:43,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:10:43,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:43,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:10:43,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:43,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 20:10:43,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:43,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 20:10:43,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:43,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-23 20:10:43,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:43,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:10:43,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:43,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2020-10-23 20:10:43,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:43,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-10-23 20:10:43,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:43,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-23 20:10:43,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:43,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2020-10-23 20:10:43,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:43,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:10:43,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:43,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 20:10:43,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:43,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-23 20:10:43,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:43,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2020-10-23 20:10:43,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:43,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2020-10-23 20:10:43,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:43,406 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 20:10:43,407 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2084447031] [2020-10-23 20:10:43,407 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:10:43,407 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-23 20:10:43,408 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685762756] [2020-10-23 20:10:43,408 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-23 20:10:43,408 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:10:43,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-23 20:10:43,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2020-10-23 20:10:43,410 INFO L87 Difference]: Start difference. First operand 759 states and 840 transitions. Second operand 15 states. [2020-10-23 20:10:44,304 WARN L193 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 20:10:44,746 WARN L193 SmtUtils]: Spent 401.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:10:45,182 WARN L193 SmtUtils]: Spent 367.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:10:45,608 WARN L193 SmtUtils]: Spent 383.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:10:46,022 WARN L193 SmtUtils]: Spent 374.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:10:47,250 WARN L193 SmtUtils]: Spent 382.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:10:47,664 WARN L193 SmtUtils]: Spent 380.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:10:48,092 WARN L193 SmtUtils]: Spent 370.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:10:48,544 WARN L193 SmtUtils]: Spent 395.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:10:48,969 WARN L193 SmtUtils]: Spent 378.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:10:51,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:10:51,502 INFO L93 Difference]: Finished difference Result 1515 states and 1807 transitions. [2020-10-23 20:10:51,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-23 20:10:51,503 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 279 [2020-10-23 20:10:51,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:10:51,510 INFO L225 Difference]: With dead ends: 1515 [2020-10-23 20:10:51,511 INFO L226 Difference]: Without dead ends: 871 [2020-10-23 20:10:51,514 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=172, Invalid=584, Unknown=0, NotChecked=0, Total=756 [2020-10-23 20:10:51,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 871 states. [2020-10-23 20:10:51,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 871 to 655. [2020-10-23 20:10:51,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 655 states. [2020-10-23 20:10:51,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 655 states to 655 states and 718 transitions. [2020-10-23 20:10:51,769 INFO L78 Accepts]: Start accepts. Automaton has 655 states and 718 transitions. Word has length 279 [2020-10-23 20:10:51,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:10:51,771 INFO L481 AbstractCegarLoop]: Abstraction has 655 states and 718 transitions. [2020-10-23 20:10:51,771 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-23 20:10:51,771 INFO L276 IsEmpty]: Start isEmpty. Operand 655 states and 718 transitions. [2020-10-23 20:10:51,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2020-10-23 20:10:51,781 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:10:51,781 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:10:51,781 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-23 20:10:51,782 INFO L429 AbstractCegarLoop]: === Iteration 8 === [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 20:10:51,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:10:51,782 INFO L82 PathProgramCache]: Analyzing trace with hash -721214754, now seen corresponding path program 1 times [2020-10-23 20:10:51,783 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:10:51,783 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2037827160] [2020-10-23 20:10:51,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:10:52,119 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 68 [2020-10-23 20:10:52,256 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2020-10-23 20:10:52,550 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 68 [2020-10-23 20:10:52,667 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2020-10-23 20:10:52,974 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 68 [2020-10-23 20:10:53,399 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 69 [2020-10-23 20:10:53,804 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 69 [2020-10-23 20:10:54,221 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 69 [2020-10-23 20:10:54,883 WARN L193 SmtUtils]: Spent 495.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 139 [2020-10-23 20:10:55,414 WARN L193 SmtUtils]: Spent 486.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 140 [2020-10-23 20:10:55,927 WARN L193 SmtUtils]: Spent 465.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 140 [2020-10-23 20:10:56,468 WARN L193 SmtUtils]: Spent 499.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 139 [2020-10-23 20:10:56,473 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:10:56,969 WARN L193 SmtUtils]: Spent 454.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 140 [2020-10-23 20:10:57,472 WARN L193 SmtUtils]: Spent 478.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 140 [2020-10-23 20:10:58,000 WARN L193 SmtUtils]: Spent 494.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 139 [2020-10-23 20:10:58,514 WARN L193 SmtUtils]: Spent 482.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 139 [2020-10-23 20:10:58,518 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:10:59,025 WARN L193 SmtUtils]: Spent 488.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 140 [2020-10-23 20:10:59,529 WARN L193 SmtUtils]: Spent 459.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 140 [2020-10-23 20:11:00,033 WARN L193 SmtUtils]: Spent 475.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 139 [2020-10-23 20:11:00,543 WARN L193 SmtUtils]: Spent 483.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 139 [2020-10-23 20:11:00,546 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:11:00,546 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:11:00,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 20:11:00,782 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 20:11:00,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 20:11:00,923 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 20:11:01,123 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-23 20:11:01,124 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-23 20:11:01,125 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-23 20:11:01,167 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 08:11:01 BoogieIcfgContainer [2020-10-23 20:11:01,167 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 20:11:01,170 INFO L168 Benchmark]: Toolchain (without parser) took 66552.92 ms. Allocated memory was 154.1 MB in the beginning and 576.7 MB in the end (delta: 422.6 MB). Free memory was 130.0 MB in the beginning and 263.0 MB in the end (delta: -132.9 MB). Peak memory consumption was 289.9 MB. Max. memory is 8.0 GB. [2020-10-23 20:11:01,171 INFO L168 Benchmark]: CDTParser took 0.41 ms. Allocated memory is still 154.1 MB. Free memory is still 128.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 20:11:01,172 INFO L168 Benchmark]: CACSL2BoogieTranslator took 713.11 ms. Allocated memory is still 154.1 MB. Free memory was 129.5 MB in the beginning and 108.3 MB in the end (delta: 21.2 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. [2020-10-23 20:11:01,173 INFO L168 Benchmark]: Boogie Preprocessor took 142.23 ms. Allocated memory is still 154.1 MB. Free memory was 108.3 MB in the beginning and 135.6 MB in the end (delta: -27.3 MB). Peak memory consumption was 7.3 MB. Max. memory is 8.0 GB. [2020-10-23 20:11:01,174 INFO L168 Benchmark]: RCFGBuilder took 1868.71 ms. Allocated memory is still 154.1 MB. Free memory was 135.6 MB in the beginning and 90.5 MB in the end (delta: 45.1 MB). Peak memory consumption was 63.4 MB. Max. memory is 8.0 GB. [2020-10-23 20:11:01,175 INFO L168 Benchmark]: TraceAbstraction took 63809.37 ms. Allocated memory was 154.1 MB in the beginning and 576.7 MB in the end (delta: 422.6 MB). Free memory was 90.0 MB in the beginning and 263.0 MB in the end (delta: -173.0 MB). Peak memory consumption was 249.6 MB. Max. memory is 8.0 GB. [2020-10-23 20:11:01,186 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.41 ms. Allocated memory is still 154.1 MB. Free memory is still 128.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 713.11 ms. Allocated memory is still 154.1 MB. Free memory was 129.5 MB in the beginning and 108.3 MB in the end (delta: 21.2 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 142.23 ms. Allocated memory is still 154.1 MB. Free memory was 108.3 MB in the beginning and 135.6 MB in the end (delta: -27.3 MB). Peak memory consumption was 7.3 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1868.71 ms. Allocated memory is still 154.1 MB. Free memory was 135.6 MB in the beginning and 90.5 MB in the end (delta: 45.1 MB). Peak memory consumption was 63.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 63809.37 ms. Allocated memory was 154.1 MB in the beginning and 576.7 MB in the end (delta: 422.6 MB). Free memory was 90.0 MB in the beginning and 263.0 MB in the end (delta: -173.0 MB). Peak memory consumption was 249.6 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: [L42] int cleanupTimeShifts = 4; [L151] int waterLevel = 1; [L152] int methaneLevelCritical = 0; [L351] int pumpRunning = 0; [L352] int systemActive = 1; [L706] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L123] int retValue_acc ; [L124] int tmp ; [L128] FCALL select_helpers() [L129] FCALL select_features() [L130] CALL, EXPR valid_product() [L929] int retValue_acc ; [L932] retValue_acc = 1 [L933] return (retValue_acc); [L130] RET, EXPR valid_product() [L130] tmp = valid_product() [L132] COND TRUE \read(tmp) [L134] FCALL setup() [L135] CALL runTest() [L114] CALL test() [L283] int splverifierCounter ; [L284] int tmp ; [L285] int tmp___0 ; [L286] int tmp___1 ; [L287] int tmp___2 ; [L290] splverifierCounter = 0 [L292] COND TRUE 1 [L294] COND TRUE splverifierCounter < 4 [L300] tmp = __VERIFIER_nondet_int() [L302] COND TRUE \read(tmp) [L304] CALL waterRise() [L169] COND TRUE waterLevel < 2 [L170] waterLevel = waterLevel + 1 [L304] RET waterRise() [L310] tmp___0 = __VERIFIER_nondet_int() [L312] COND FALSE !(\read(tmp___0)) [L320] tmp___2 = __VERIFIER_nondet_int() [L322] COND TRUE \read(tmp___2) [L324] CALL startSystem() [L532] systemActive = 1 [L324] RET startSystem() [L337] CALL timeShift() [L358] COND FALSE !(\read(pumpRunning)) [L365] COND TRUE \read(systemActive) [L367] CALL processEnvironment() [L413] int tmp ; [L416] COND FALSE !(\read(pumpRunning)) [L431] CALL processEnvironment__wrappee__highWaterSensor() [L387] int tmp ; [L390] COND TRUE ! pumpRunning [L392] CALL, EXPR isHighWaterLevel() [L510] int retValue_acc ; [L511] int tmp ; [L512] int tmp___0 ; [L516] CALL, EXPR isHighWaterSensorDry() [L231] int retValue_acc ; [L234] COND FALSE !(waterLevel < 2) [L238] retValue_acc = 0 [L239] return (retValue_acc); [L516] RET, EXPR isHighWaterSensorDry() [L516] tmp = isHighWaterSensorDry() [L518] COND FALSE !(\read(tmp)) [L521] tmp___0 = 1 [L523] retValue_acc = tmp___0 [L524] return (retValue_acc); [L392] RET, EXPR isHighWaterLevel() [L392] tmp = isHighWaterLevel() [L394] COND TRUE \read(tmp) [L396] CALL activatePump() [L441] pumpRunning = 1 [L396] RET activatePump() [L431] RET processEnvironment__wrappee__highWaterSensor() [L367] RET processEnvironment() [L373] CALL __utac_acc__Specification4_spec__1() [L256] int tmp ; [L257] int tmp___0 ; [L261] CALL, EXPR getWaterLevel() [L222] int retValue_acc ; [L225] retValue_acc = waterLevel [L226] return (retValue_acc); [L261] RET, EXPR getWaterLevel() [L261] tmp = getWaterLevel() [L263] COND FALSE !(tmp == 0) [L373] RET __utac_acc__Specification4_spec__1() [L337] RET timeShift() [L292] COND TRUE 1 [L294] COND TRUE splverifierCounter < 4 [L300] tmp = __VERIFIER_nondet_int() [L302] COND TRUE \read(tmp) [L304] CALL waterRise() [L169] COND TRUE waterLevel < 2 [L170] waterLevel = waterLevel + 1 [L304] RET waterRise() [L310] tmp___0 = __VERIFIER_nondet_int() [L312] COND FALSE !(\read(tmp___0)) [L320] tmp___2 = __VERIFIER_nondet_int() [L322] COND TRUE \read(tmp___2) [L324] CALL startSystem() [L532] systemActive = 1 [L324] RET startSystem() [L337] CALL timeShift() [L358] COND TRUE \read(pumpRunning) [L360] CALL lowerWaterLevel() [L157] COND FALSE !(waterLevel > 0) [L360] RET lowerWaterLevel() [L365] COND TRUE \read(systemActive) [L367] CALL processEnvironment() [L413] int tmp ; [L416] COND TRUE \read(pumpRunning) [L418] CALL, EXPR isMethaneAlarm() [L454] int retValue_acc ; [L458] CALL, EXPR isMethaneLevelCritical() [L190] int retValue_acc ; [L193] retValue_acc = methaneLevelCritical [L194] return (retValue_acc); [L458] RET, EXPR isMethaneLevelCritical() [L458] retValue_acc = isMethaneLevelCritical() [L460] return (retValue_acc); [L418] RET, EXPR isMethaneAlarm() [L418] tmp = isMethaneAlarm() [L420] COND TRUE \read(tmp) [L422] CALL deactivatePump() [L449] pumpRunning = 0 [L422] RET deactivatePump() [L367] RET processEnvironment() [L373] CALL __utac_acc__Specification4_spec__1() [L256] int tmp ; [L257] int tmp___0 ; [L261] CALL, EXPR getWaterLevel() [L222] int retValue_acc ; [L225] retValue_acc = waterLevel [L226] return (retValue_acc); [L261] RET, EXPR getWaterLevel() [L261] tmp = getWaterLevel() [L263] COND TRUE tmp == 0 [L265] CALL, EXPR isPumpRunning() [L465] int retValue_acc ; [L468] retValue_acc = pumpRunning [L469] return (retValue_acc); [L265] RET, EXPR isPumpRunning() [L265] tmp___0 = isPumpRunning() [L267] COND TRUE \read(tmp___0) [L269] CALL __automaton_fail() [L249] CALL reach_error() [L3] __assert_fail("0", "minepump_spec4_product38.cil.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 40 procedures, 635 locations, 5 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 63.6s, OverallIterations: 8, TraceHistogramMax: 2, AutomataDifference: 45.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1731 SDtfs, 3726 SDslu, 4181 SDs, 0 SdLazy, 8319 SolverSat, 1092 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 19.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 338 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 520 ImplicationChecksByTransitivity, 22.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=759occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.7s AutomataMinimizationTime, 7 MinimizatonAttempts, 1060 StatesRemovedByMinimization, 7 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...