/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_spec2_product55.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 19:54:24,986 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 19:54:24,991 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 19:54:25,043 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 19:54:25,044 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 19:54:25,048 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 19:54:25,051 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 19:54:25,059 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 19:54:25,062 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 19:54:25,068 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 19:54:25,069 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 19:54:25,070 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 19:54:25,071 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 19:54:25,074 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 19:54:25,075 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 19:54:25,077 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 19:54:25,078 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 19:54:25,081 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 19:54:25,088 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 19:54:25,097 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 19:54:25,100 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 19:54:25,101 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 19:54:25,103 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 19:54:25,105 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 19:54:25,111 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-23 19:54:25,123 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-23 19:54:25,123 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-23 19:54:25,124 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-23 19:54:25,125 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-23 19:54:25,128 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-23 19:54:25,129 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-23 19:54:25,129 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-23 19:54:25,131 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-23 19:54:25,132 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-23 19:54:25,133 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-23 19:54:25,133 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-23 19:54:25,134 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-23 19:54:25,134 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-23 19:54:25,134 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 19:54:25,135 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 19:54:25,136 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 19:54:25,137 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-10-23 19:54:25,161 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 19:54:25,161 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 19:54:25,165 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 19:54:25,166 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 19:54:25,166 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 19:54:25,166 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 19:54:25,166 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 19:54:25,166 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 19:54:25,167 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 19:54:25,167 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 19:54:25,168 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 19:54:25,168 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 19:54:25,169 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 19:54:25,169 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 19:54:25,169 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 19:54:25,169 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-23 19:54:25,170 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 19:54:25,170 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 19:54:25,170 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 19:54:25,170 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 19:54:25,170 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-23 19:54:25,171 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 19:54:25,171 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 19:54:25,560 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 19:54:25,597 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 19:54:25,602 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 19:54:25,603 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 19:54:25,604 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 19:54:25,605 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product55.cil.c [2020-10-23 19:54:25,699 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7b63f8368/c8d9a5a7369d4a38b8d7c26e72d4846c/FLAGd0013b022 [2020-10-23 19:54:26,412 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 19:54:26,413 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec2_product55.cil.c [2020-10-23 19:54:26,434 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7b63f8368/c8d9a5a7369d4a38b8d7c26e72d4846c/FLAGd0013b022 [2020-10-23 19:54:26,699 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7b63f8368/c8d9a5a7369d4a38b8d7c26e72d4846c [2020-10-23 19:54:26,702 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 19:54:26,709 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 19:54:26,718 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 19:54:26,719 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 19:54:26,723 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 19:54:26,724 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 07:54:26" (1/1) ... [2020-10-23 19:54:26,728 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9129e05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:54:26, skipping insertion in model container [2020-10-23 19:54:26,728 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 07:54:26" (1/1) ... [2020-10-23 19:54:26,738 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 19:54:26,816 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 19:54:27,225 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 19:54:27,238 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 19:54:27,352 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 19:54:27,418 INFO L208 MainTranslator]: Completed translation [2020-10-23 19:54:27,419 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:54:27 WrapperNode [2020-10-23 19:54:27,419 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 19:54:27,420 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 19:54:27,420 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 19:54:27,420 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 19:54:27,434 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:54:27" (1/1) ... [2020-10-23 19:54:27,435 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:54:27" (1/1) ... [2020-10-23 19:54:27,476 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:54:27" (1/1) ... [2020-10-23 19:54:27,477 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:54:27" (1/1) ... [2020-10-23 19:54:27,547 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:54:27" (1/1) ... [2020-10-23 19:54:27,557 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:54:27" (1/1) ... [2020-10-23 19:54:27,562 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:54:27" (1/1) ... [2020-10-23 19:54:27,569 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 19:54:27,571 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 19:54:27,571 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 19:54:27,571 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 19:54:27,572 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:54:27" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 19:54:27,656 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 19:54:27,656 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 19:54:27,656 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-10-23 19:54:27,656 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 19:54:27,657 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-10-23 19:54:27,657 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-10-23 19:54:27,657 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-10-23 19:54:27,657 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-10-23 19:54:27,657 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-10-23 19:54:27,658 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-10-23 19:54:27,658 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-10-23 19:54:27,658 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-10-23 19:54:27,658 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-10-23 19:54:27,658 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-10-23 19:54:27,659 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-10-23 19:54:27,659 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-10-23 19:54:27,659 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-10-23 19:54:27,659 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-10-23 19:54:27,659 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-10-23 19:54:27,660 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-10-23 19:54:27,660 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-10-23 19:54:27,660 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-10-23 19:54:27,660 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-10-23 19:54:27,660 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-10-23 19:54:27,661 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-10-23 19:54:27,661 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-10-23 19:54:27,661 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-10-23 19:54:27,661 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-10-23 19:54:27,661 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-10-23 19:54:27,661 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-10-23 19:54:27,662 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-10-23 19:54:27,662 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-10-23 19:54:27,662 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-10-23 19:54:27,662 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-10-23 19:54:27,662 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-10-23 19:54:27,663 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-10-23 19:54:27,663 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-10-23 19:54:27,663 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-10-23 19:54:27,663 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-10-23 19:54:27,663 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-10-23 19:54:27,664 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-10-23 19:54:27,664 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-10-23 19:54:27,664 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 19:54:27,664 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-10-23 19:54:27,664 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 19:54:27,664 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 19:54:27,665 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 19:54:27,665 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 19:54:27,665 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-23 19:54:27,665 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-10-23 19:54:27,665 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-10-23 19:54:27,665 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-10-23 19:54:27,666 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-10-23 19:54:27,666 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-10-23 19:54:27,666 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-10-23 19:54:27,666 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-10-23 19:54:27,666 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-10-23 19:54:27,666 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-10-23 19:54:27,666 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-10-23 19:54:27,667 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-10-23 19:54:27,667 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-10-23 19:54:27,667 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-10-23 19:54:27,667 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-10-23 19:54:27,667 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-10-23 19:54:27,667 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-10-23 19:54:27,668 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-10-23 19:54:27,668 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-10-23 19:54:27,668 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-10-23 19:54:27,668 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-10-23 19:54:27,668 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-10-23 19:54:27,668 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-10-23 19:54:27,669 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-10-23 19:54:27,669 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-10-23 19:54:27,669 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-10-23 19:54:27,669 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-10-23 19:54:27,669 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-10-23 19:54:27,669 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-10-23 19:54:27,670 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-10-23 19:54:27,670 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-23 19:54:27,670 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-23 19:54:27,670 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-10-23 19:54:27,670 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-23 19:54:27,670 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-23 19:54:27,671 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 19:54:27,671 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-23 19:54:27,671 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-10-23 19:54:27,671 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 19:54:27,671 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-10-23 19:54:27,672 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-10-23 19:54:27,672 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 19:54:27,672 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-10-23 19:54:27,672 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-10-23 19:54:27,672 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-10-23 19:54:27,672 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-10-23 19:54:27,673 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-10-23 19:54:27,673 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-10-23 19:54:27,673 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-10-23 19:54:27,673 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-10-23 19:54:27,673 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 19:54:27,673 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 19:54:27,674 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 19:54:27,674 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 19:54:29,446 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 19:54:29,447 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-23 19:54:29,450 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 07:54:29 BoogieIcfgContainer [2020-10-23 19:54:29,450 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 19:54:29,452 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 19:54:29,452 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 19:54:29,456 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 19:54:29,456 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 07:54:26" (1/3) ... [2020-10-23 19:54:29,457 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dd54460 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 07:54:29, skipping insertion in model container [2020-10-23 19:54:29,458 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:54:27" (2/3) ... [2020-10-23 19:54:29,458 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dd54460 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 07:54:29, skipping insertion in model container [2020-10-23 19:54:29,458 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 07:54:29" (3/3) ... [2020-10-23 19:54:29,460 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product55.cil.c [2020-10-23 19:54:29,473 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-23 19:54:29,479 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-10-23 19:54:29,494 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-23 19:54:29,520 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 19:54:29,520 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 19:54:29,521 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-10-23 19:54:29,521 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 19:54:29,524 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 19:54:29,524 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 19:54:29,524 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 19:54:29,524 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 19:54:29,549 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states. [2020-10-23 19:54:29,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-10-23 19:54:29,570 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:54:29,571 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] [2020-10-23 19:54:29,572 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 19:54:29,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:54:29,578 INFO L82 PathProgramCache]: Analyzing trace with hash -338913355, now seen corresponding path program 1 times [2020-10-23 19:54:29,588 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:54:29,589 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1668611553] [2020-10-23 19:54:29,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:54:29,669 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:54:29,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:30,791 WARN L193 SmtUtils]: Spent 692.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:54:30,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:54:30,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:30,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 19:54:30,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:30,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 19:54:30,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:30,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 19:54:30,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:30,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 19:54:30,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:30,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 19:54:30,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:30,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-23 19:54:30,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:30,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-23 19:54:30,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:30,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 19:54:30,996 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1668611553] [2020-10-23 19:54:30,998 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:54:30,998 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-23 19:54:30,998 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218603818] [2020-10-23 19:54:31,004 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-23 19:54:31,004 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:54:31,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-23 19:54:31,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-23 19:54:31,021 INFO L87 Difference]: Start difference. First operand 356 states. Second operand 4 states. [2020-10-23 19:54:34,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:54:34,046 INFO L93 Difference]: Finished difference Result 569 states and 676 transitions. [2020-10-23 19:54:34,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-23 19:54:34,048 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 154 [2020-10-23 19:54:34,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:54:34,067 INFO L225 Difference]: With dead ends: 569 [2020-10-23 19:54:34,067 INFO L226 Difference]: Without dead ends: 354 [2020-10-23 19:54:34,073 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-23 19:54:34,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2020-10-23 19:54:34,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 302. [2020-10-23 19:54:34,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 302 states. [2020-10-23 19:54:34,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 332 transitions. [2020-10-23 19:54:34,267 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 332 transitions. Word has length 154 [2020-10-23 19:54:34,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:54:34,268 INFO L481 AbstractCegarLoop]: Abstraction has 302 states and 332 transitions. [2020-10-23 19:54:34,268 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-23 19:54:34,268 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 332 transitions. [2020-10-23 19:54:34,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-10-23 19:54:34,273 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:54:34,274 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] [2020-10-23 19:54:34,274 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 19:54:34,274 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 19:54:34,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:54:34,275 INFO L82 PathProgramCache]: Analyzing trace with hash -332115335, now seen corresponding path program 1 times [2020-10-23 19:54:34,275 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:54:34,275 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1406742640] [2020-10-23 19:54:34,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:54:34,279 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:54:34,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:35,118 WARN L193 SmtUtils]: Spent 696.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:54:35,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:54:35,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:35,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 19:54:35,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:35,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 19:54:35,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:35,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 19:54:35,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:35,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 19:54:35,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:35,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 19:54:35,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:35,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-23 19:54:35,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:35,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-10-23 19:54:35,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:35,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 19:54:35,269 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1406742640] [2020-10-23 19:54:35,269 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:54:35,269 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-23 19:54:35,272 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439153830] [2020-10-23 19:54:35,274 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-23 19:54:35,276 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:54:35,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-23 19:54:35,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-23 19:54:35,277 INFO L87 Difference]: Start difference. First operand 302 states and 332 transitions. Second operand 5 states. [2020-10-23 19:54:36,745 WARN L193 SmtUtils]: Spent 713.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:54:39,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:54:39,386 INFO L93 Difference]: Finished difference Result 489 states and 559 transitions. [2020-10-23 19:54:39,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-23 19:54:39,388 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 155 [2020-10-23 19:54:39,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:54:39,393 INFO L225 Difference]: With dead ends: 489 [2020-10-23 19:54:39,393 INFO L226 Difference]: Without dead ends: 343 [2020-10-23 19:54:39,396 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-23 19:54:39,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2020-10-23 19:54:39,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 292. [2020-10-23 19:54:39,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 292 states. [2020-10-23 19:54:39,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 319 transitions. [2020-10-23 19:54:39,528 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 319 transitions. Word has length 155 [2020-10-23 19:54:39,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:54:39,529 INFO L481 AbstractCegarLoop]: Abstraction has 292 states and 319 transitions. [2020-10-23 19:54:39,529 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-23 19:54:39,529 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 319 transitions. [2020-10-23 19:54:39,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-10-23 19:54:39,532 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:54:39,532 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] [2020-10-23 19:54:39,532 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 19:54:39,532 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 19:54:39,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:54:39,533 INFO L82 PathProgramCache]: Analyzing trace with hash 1860145070, now seen corresponding path program 1 times [2020-10-23 19:54:39,534 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:54:39,534 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1793785954] [2020-10-23 19:54:39,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:54:39,537 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:54:39,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:40,379 WARN L193 SmtUtils]: Spent 691.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:54:40,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:54:40,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:40,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 19:54:40,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:40,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 19:54:40,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:40,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 19:54:40,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:40,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 19:54:40,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:40,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 19:54:40,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:40,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-23 19:54:40,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:40,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-10-23 19:54:40,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:40,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 19:54:40,677 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1793785954] [2020-10-23 19:54:40,678 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:54:40,678 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-23 19:54:40,680 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119579456] [2020-10-23 19:54:40,687 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-23 19:54:40,688 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:54:40,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-23 19:54:40,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-23 19:54:40,690 INFO L87 Difference]: Start difference. First operand 292 states and 319 transitions. Second operand 10 states. [2020-10-23 19:54:41,887 WARN L193 SmtUtils]: Spent 660.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:54:42,847 WARN L193 SmtUtils]: Spent 763.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 19:54:43,651 WARN L193 SmtUtils]: Spent 768.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-23 19:54:44,508 WARN L193 SmtUtils]: Spent 782.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:54:45,247 WARN L193 SmtUtils]: Spent 683.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 19:54:46,035 WARN L193 SmtUtils]: Spent 748.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:54:48,128 WARN L193 SmtUtils]: Spent 734.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:54:53,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:54:53,835 INFO L93 Difference]: Finished difference Result 786 states and 917 transitions. [2020-10-23 19:54:53,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-23 19:54:53,837 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 164 [2020-10-23 19:54:53,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:54:53,844 INFO L225 Difference]: With dead ends: 786 [2020-10-23 19:54:53,844 INFO L226 Difference]: Without dead ends: 614 [2020-10-23 19:54:53,847 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2020-10-23 19:54:53,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 614 states. [2020-10-23 19:54:54,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 614 to 531. [2020-10-23 19:54:54,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 531 states. [2020-10-23 19:54:54,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 531 states to 531 states and 600 transitions. [2020-10-23 19:54:54,087 INFO L78 Accepts]: Start accepts. Automaton has 531 states and 600 transitions. Word has length 164 [2020-10-23 19:54:54,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:54:54,088 INFO L481 AbstractCegarLoop]: Abstraction has 531 states and 600 transitions. [2020-10-23 19:54:54,088 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-23 19:54:54,088 INFO L276 IsEmpty]: Start isEmpty. Operand 531 states and 600 transitions. [2020-10-23 19:54:54,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-10-23 19:54:54,092 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:54:54,093 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 19:54:54,093 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-23 19:54:54,093 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 19:54:54,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:54:54,094 INFO L82 PathProgramCache]: Analyzing trace with hash -456954963, now seen corresponding path program 1 times [2020-10-23 19:54:54,094 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:54:54,094 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1352446004] [2020-10-23 19:54:54,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:54:54,098 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:54:54,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:54,811 WARN L193 SmtUtils]: Spent 593.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:54:54,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:54:54,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:54,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 19:54:54,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:54,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 19:54:54,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:54,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 19:54:54,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:54,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 19:54:54,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:54,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 19:54:54,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:54,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-10-23 19:54:54,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:54,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-23 19:54:54,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:54,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-10-23 19:54:54,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:55,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 19:54:55,016 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1352446004] [2020-10-23 19:54:55,017 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:54:55,017 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-23 19:54:55,017 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816692760] [2020-10-23 19:54:55,017 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-23 19:54:55,018 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:54:55,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-23 19:54:55,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-23 19:54:55,019 INFO L87 Difference]: Start difference. First operand 531 states and 600 transitions. Second operand 10 states. [2020-10-23 19:54:56,272 WARN L193 SmtUtils]: Spent 721.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:54:58,692 WARN L193 SmtUtils]: Spent 747.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:54:59,576 WARN L193 SmtUtils]: Spent 764.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 19:55:00,711 WARN L193 SmtUtils]: Spent 723.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:55:01,550 WARN L193 SmtUtils]: Spent 749.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:55:02,933 WARN L193 SmtUtils]: Spent 746.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:55:03,908 WARN L193 SmtUtils]: Spent 751.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 19:55:04,833 WARN L193 SmtUtils]: Spent 745.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:55:06,209 WARN L193 SmtUtils]: Spent 728.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:55:09,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:55:09,466 INFO L93 Difference]: Finished difference Result 1481 states and 1793 transitions. [2020-10-23 19:55:09,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-23 19:55:09,468 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 173 [2020-10-23 19:55:09,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:55:09,477 INFO L225 Difference]: With dead ends: 1481 [2020-10-23 19:55:09,477 INFO L226 Difference]: Without dead ends: 1070 [2020-10-23 19:55:09,481 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=159, Invalid=441, Unknown=0, NotChecked=0, Total=600 [2020-10-23 19:55:09,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1070 states. [2020-10-23 19:55:09,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1070 to 893. [2020-10-23 19:55:09,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 893 states. [2020-10-23 19:55:09,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 893 states to 893 states and 1023 transitions. [2020-10-23 19:55:09,899 INFO L78 Accepts]: Start accepts. Automaton has 893 states and 1023 transitions. Word has length 173 [2020-10-23 19:55:09,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:55:09,900 INFO L481 AbstractCegarLoop]: Abstraction has 893 states and 1023 transitions. [2020-10-23 19:55:09,900 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-23 19:55:09,900 INFO L276 IsEmpty]: Start isEmpty. Operand 893 states and 1023 transitions. [2020-10-23 19:55:09,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-10-23 19:55:09,905 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:55:09,905 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 19:55:09,905 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-23 19:55:09,906 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 19:55:09,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:55:09,906 INFO L82 PathProgramCache]: Analyzing trace with hash -1242611112, now seen corresponding path program 1 times [2020-10-23 19:55:09,906 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:55:09,907 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1539925907] [2020-10-23 19:55:09,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:55:09,910 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:55:09,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:10,713 WARN L193 SmtUtils]: Spent 691.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:55:10,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:55:10,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:10,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 19:55:10,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:10,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 19:55:10,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:10,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 19:55:10,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:10,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 19:55:10,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:10,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 19:55:10,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:10,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-23 19:55:10,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:10,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-10-23 19:55:10,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:10,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-10-23 19:55:10,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:10,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2020-10-23 19:55:10,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:10,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 19:55:10,934 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1539925907] [2020-10-23 19:55:10,935 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:55:10,935 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-23 19:55:10,935 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693914943] [2020-10-23 19:55:10,936 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-23 19:55:10,936 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:55:10,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-23 19:55:10,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-23 19:55:10,937 INFO L87 Difference]: Start difference. First operand 893 states and 1023 transitions. Second operand 11 states. [2020-10-23 19:55:12,143 WARN L193 SmtUtils]: Spent 722.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:55:14,850 WARN L193 SmtUtils]: Spent 624.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:55:15,646 WARN L193 SmtUtils]: Spent 740.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 19:55:16,492 WARN L193 SmtUtils]: Spent 738.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:55:17,357 WARN L193 SmtUtils]: Spent 768.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 19:55:18,175 WARN L193 SmtUtils]: Spent 738.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:55:19,914 WARN L193 SmtUtils]: Spent 720.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:55:20,696 WARN L193 SmtUtils]: Spent 747.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:55:21,651 WARN L193 SmtUtils]: Spent 714.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:55:24,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:55:24,500 INFO L93 Difference]: Finished difference Result 2277 states and 2836 transitions. [2020-10-23 19:55:24,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-23 19:55:24,501 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 178 [2020-10-23 19:55:24,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:55:24,512 INFO L225 Difference]: With dead ends: 2277 [2020-10-23 19:55:24,512 INFO L226 Difference]: Without dead ends: 1504 [2020-10-23 19:55:24,517 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 213 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=283, Invalid=773, Unknown=0, NotChecked=0, Total=1056 [2020-10-23 19:55:24,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1504 states. [2020-10-23 19:55:25,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1504 to 1215. [2020-10-23 19:55:25,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1215 states. [2020-10-23 19:55:25,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1215 states to 1215 states and 1393 transitions. [2020-10-23 19:55:25,045 INFO L78 Accepts]: Start accepts. Automaton has 1215 states and 1393 transitions. Word has length 178 [2020-10-23 19:55:25,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:55:25,046 INFO L481 AbstractCegarLoop]: Abstraction has 1215 states and 1393 transitions. [2020-10-23 19:55:25,046 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-23 19:55:25,046 INFO L276 IsEmpty]: Start isEmpty. Operand 1215 states and 1393 transitions. [2020-10-23 19:55:25,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-10-23 19:55:25,051 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:55:25,051 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 19:55:25,051 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-23 19:55:25,052 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 19:55:25,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:55:25,052 INFO L82 PathProgramCache]: Analyzing trace with hash -580443057, now seen corresponding path program 1 times [2020-10-23 19:55:25,053 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:55:25,053 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1000423628] [2020-10-23 19:55:25,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:55:25,056 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:55:25,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:25,870 WARN L193 SmtUtils]: Spent 740.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:55:25,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:55:25,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:25,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 19:55:25,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:25,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 19:55:25,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:25,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 19:55:25,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:25,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 19:55:25,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:25,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 19:55:25,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:25,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-23 19:55:25,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:25,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-10-23 19:55:25,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:25,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:55:25,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:25,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:55:26,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:26,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:55:26,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:26,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 19:55:26,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:26,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 19:55:26,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:26,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2020-10-23 19:55:26,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:26,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2020-10-23 19:55:26,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:26,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 19:55:26,245 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1000423628] [2020-10-23 19:55:26,246 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:55:26,247 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-23 19:55:26,247 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006626405] [2020-10-23 19:55:26,247 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-23 19:55:26,248 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:55:26,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-23 19:55:26,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-23 19:55:26,249 INFO L87 Difference]: Start difference. First operand 1215 states and 1393 transitions. Second operand 11 states. [2020-10-23 19:55:29,366 WARN L193 SmtUtils]: Spent 817.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:55:30,293 WARN L193 SmtUtils]: Spent 836.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-23 19:55:31,251 WARN L193 SmtUtils]: Spent 902.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-10-23 19:55:32,183 WARN L193 SmtUtils]: Spent 778.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:55:33,106 WARN L193 SmtUtils]: Spent 805.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 19:55:33,996 WARN L193 SmtUtils]: Spent 789.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:55:37,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:55:37,696 INFO L93 Difference]: Finished difference Result 2741 states and 3357 transitions. [2020-10-23 19:55:37,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-23 19:55:37,698 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 212 [2020-10-23 19:55:37,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:55:37,709 INFO L225 Difference]: With dead ends: 2741 [2020-10-23 19:55:37,710 INFO L226 Difference]: Without dead ends: 1646 [2020-10-23 19:55:37,714 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2020-10-23 19:55:37,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1646 states. [2020-10-23 19:55:38,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1646 to 1253. [2020-10-23 19:55:38,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1253 states. [2020-10-23 19:55:38,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1253 states to 1253 states and 1433 transitions. [2020-10-23 19:55:38,248 INFO L78 Accepts]: Start accepts. Automaton has 1253 states and 1433 transitions. Word has length 212 [2020-10-23 19:55:38,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:55:38,249 INFO L481 AbstractCegarLoop]: Abstraction has 1253 states and 1433 transitions. [2020-10-23 19:55:38,249 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-23 19:55:38,249 INFO L276 IsEmpty]: Start isEmpty. Operand 1253 states and 1433 transitions. [2020-10-23 19:55:38,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-10-23 19:55:38,253 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:55:38,254 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 19:55:38,254 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-23 19:55:38,254 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 19:55:38,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:55:38,255 INFO L82 PathProgramCache]: Analyzing trace with hash 1782333423, now seen corresponding path program 1 times [2020-10-23 19:55:38,255 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:55:38,255 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1952620609] [2020-10-23 19:55:38,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:55:38,258 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:55:38,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:39,108 WARN L193 SmtUtils]: Spent 759.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:55:39,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:55:39,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:39,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 19:55:39,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:39,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 19:55:39,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:39,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 19:55:39,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:39,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 19:55:39,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:39,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 19:55:39,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:39,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-23 19:55:39,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:39,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-10-23 19:55:39,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:39,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:55:39,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:39,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:55:39,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:39,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:55:39,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:39,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 19:55:39,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:39,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 19:55:39,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:39,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2020-10-23 19:55:39,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:39,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2020-10-23 19:55:39,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:39,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 19:55:39,516 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1952620609] [2020-10-23 19:55:39,516 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:55:39,516 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-23 19:55:39,516 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055539905] [2020-10-23 19:55:39,517 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-23 19:55:39,517 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:55:39,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-23 19:55:39,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-10-23 19:55:39,518 INFO L87 Difference]: Start difference. First operand 1253 states and 1433 transitions. Second operand 14 states. [2020-10-23 19:55:40,905 WARN L193 SmtUtils]: Spent 776.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:55:41,733 WARN L193 SmtUtils]: Spent 789.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-23 19:55:42,578 WARN L193 SmtUtils]: Spent 763.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:55:43,386 WARN L193 SmtUtils]: Spent 753.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 19:55:44,190 WARN L193 SmtUtils]: Spent 757.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:55:46,508 WARN L193 SmtUtils]: Spent 750.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:55:47,343 WARN L193 SmtUtils]: Spent 771.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 19:55:48,263 WARN L193 SmtUtils]: Spent 742.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:55:49,145 WARN L193 SmtUtils]: Spent 759.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 19:55:49,935 WARN L193 SmtUtils]: Spent 727.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:55:53,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:55:53,639 INFO L93 Difference]: Finished difference Result 2823 states and 3502 transitions. [2020-10-23 19:55:53,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-23 19:55:53,640 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 212 [2020-10-23 19:55:53,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:55:53,652 INFO L225 Difference]: With dead ends: 2823 [2020-10-23 19:55:53,652 INFO L226 Difference]: Without dead ends: 1690 [2020-10-23 19:55:53,657 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 9.0s TimeCoverageRelationStatistics Valid=172, Invalid=584, Unknown=0, NotChecked=0, Total=756 [2020-10-23 19:55:53,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1690 states. [2020-10-23 19:55:54,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1690 to 1277. [2020-10-23 19:55:54,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1277 states. [2020-10-23 19:55:54,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1277 states to 1277 states and 1457 transitions. [2020-10-23 19:55:54,260 INFO L78 Accepts]: Start accepts. Automaton has 1277 states and 1457 transitions. Word has length 212 [2020-10-23 19:55:54,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:55:54,261 INFO L481 AbstractCegarLoop]: Abstraction has 1277 states and 1457 transitions. [2020-10-23 19:55:54,261 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-23 19:55:54,261 INFO L276 IsEmpty]: Start isEmpty. Operand 1277 states and 1457 transitions. [2020-10-23 19:55:54,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-10-23 19:55:54,265 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:55:54,266 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 19:55:54,266 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-23 19:55:54,266 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 19:55:54,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:55:54,267 INFO L82 PathProgramCache]: Analyzing trace with hash -600059886, now seen corresponding path program 1 times [2020-10-23 19:55:54,267 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:55:54,267 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [179252561] [2020-10-23 19:55:54,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:55:54,270 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:55:54,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:55,123 WARN L193 SmtUtils]: Spent 768.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:55:55,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:55:55,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:55,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 19:55:55,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:55,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 19:55:55,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:55,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 19:55:55,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:55,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 19:55:55,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:55,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 19:55:55,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:55,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-23 19:55:55,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:55,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-10-23 19:55:55,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:55,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:55:55,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:55,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:55:55,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:55,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:55:55,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:55,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 19:55:55,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:55,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 19:55:55,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:55,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2020-10-23 19:55:55,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:55,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2020-10-23 19:55:55,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:55,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 19:55:55,417 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [179252561] [2020-10-23 19:55:55,417 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:55:55,418 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-23 19:55:55,418 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045955519] [2020-10-23 19:55:55,418 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-23 19:55:55,419 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:55:55,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-23 19:55:55,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-23 19:55:55,420 INFO L87 Difference]: Start difference. First operand 1277 states and 1457 transitions. Second operand 8 states. [2020-10-23 19:55:56,755 WARN L193 SmtUtils]: Spent 785.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:55:58,322 WARN L193 SmtUtils]: Spent 784.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:56:06,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:56:06,713 INFO L93 Difference]: Finished difference Result 4215 states and 5258 transitions. [2020-10-23 19:56:06,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-23 19:56:06,714 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 212 [2020-10-23 19:56:06,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:56:06,732 INFO L225 Difference]: With dead ends: 4215 [2020-10-23 19:56:06,733 INFO L226 Difference]: Without dead ends: 3058 [2020-10-23 19:56:06,738 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 40 SyntacticMatches, 4 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=155, Invalid=445, Unknown=0, NotChecked=0, Total=600 [2020-10-23 19:56:06,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3058 states. [2020-10-23 19:56:07,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3058 to 2485. [2020-10-23 19:56:07,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2485 states. [2020-10-23 19:56:07,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2485 states to 2485 states and 2867 transitions. [2020-10-23 19:56:07,946 INFO L78 Accepts]: Start accepts. Automaton has 2485 states and 2867 transitions. Word has length 212 [2020-10-23 19:56:07,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:56:07,946 INFO L481 AbstractCegarLoop]: Abstraction has 2485 states and 2867 transitions. [2020-10-23 19:56:07,947 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-23 19:56:07,947 INFO L276 IsEmpty]: Start isEmpty. Operand 2485 states and 2867 transitions. [2020-10-23 19:56:07,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-10-23 19:56:07,952 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:56:07,953 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 19:56:07,953 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-23 19:56:07,953 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 19:56:07,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:56:07,954 INFO L82 PathProgramCache]: Analyzing trace with hash 533697763, now seen corresponding path program 1 times [2020-10-23 19:56:07,954 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:56:07,954 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1974721146] [2020-10-23 19:56:07,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:56:07,957 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:56:07,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:08,720 WARN L193 SmtUtils]: Spent 692.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:56:08,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:56:08,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:08,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 19:56:08,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:08,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 19:56:08,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:08,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 19:56:08,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:08,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 19:56:08,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:08,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 19:56:08,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:08,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-23 19:56:08,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:08,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-23 19:56:08,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:08,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-10-23 19:56:08,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:08,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:56:08,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:08,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:56:08,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:08,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:56:08,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:08,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 19:56:08,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:08,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 19:56:08,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:08,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2020-10-23 19:56:08,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:08,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2020-10-23 19:56:08,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:08,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 19:56:08,960 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1974721146] [2020-10-23 19:56:08,960 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:56:08,960 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-23 19:56:08,960 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583998735] [2020-10-23 19:56:08,961 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-23 19:56:08,961 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:56:08,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-23 19:56:08,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-23 19:56:08,962 INFO L87 Difference]: Start difference. First operand 2485 states and 2867 transitions. Second operand 8 states. [2020-10-23 19:56:10,284 WARN L193 SmtUtils]: Spent 768.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:56:18,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:56:18,909 INFO L93 Difference]: Finished difference Result 4983 states and 6244 transitions. [2020-10-23 19:56:18,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-23 19:56:18,910 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 217 [2020-10-23 19:56:18,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:56:18,944 INFO L225 Difference]: With dead ends: 4983 [2020-10-23 19:56:18,944 INFO L226 Difference]: Without dead ends: 4979 [2020-10-23 19:56:18,947 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 213 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=225, Invalid=587, Unknown=0, NotChecked=0, Total=812 [2020-10-23 19:56:18,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4979 states. [2020-10-23 19:56:20,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4979 to 4024. [2020-10-23 19:56:20,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4024 states. [2020-10-23 19:56:20,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4024 states to 4024 states and 4745 transitions. [2020-10-23 19:56:20,561 INFO L78 Accepts]: Start accepts. Automaton has 4024 states and 4745 transitions. Word has length 217 [2020-10-23 19:56:20,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:56:20,562 INFO L481 AbstractCegarLoop]: Abstraction has 4024 states and 4745 transitions. [2020-10-23 19:56:20,562 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-23 19:56:20,563 INFO L276 IsEmpty]: Start isEmpty. Operand 4024 states and 4745 transitions. [2020-10-23 19:56:20,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2020-10-23 19:56:20,577 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:56:20,578 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, 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] [2020-10-23 19:56:20,578 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-23 19:56:20,578 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 19:56:20,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:56:20,579 INFO L82 PathProgramCache]: Analyzing trace with hash 1823300431, now seen corresponding path program 1 times [2020-10-23 19:56:20,579 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:56:20,579 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1385676038] [2020-10-23 19:56:20,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:56:21,310 WARN L193 SmtUtils]: Spent 658.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 80 [2020-10-23 19:56:21,568 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-10-23 19:56:22,275 WARN L193 SmtUtils]: Spent 681.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 82 [2020-10-23 19:56:22,518 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-10-23 19:56:23,210 WARN L193 SmtUtils]: Spent 684.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 80 [2020-10-23 19:56:23,446 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-10-23 19:56:24,272 WARN L193 SmtUtils]: Spent 818.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 90 [2020-10-23 19:56:24,565 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2020-10-23 19:56:25,358 WARN L193 SmtUtils]: Spent 782.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 82 [2020-10-23 19:56:25,605 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-10-23 19:56:26,437 WARN L193 SmtUtils]: Spent 822.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 90 [2020-10-23 19:56:26,732 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2020-10-23 19:56:27,416 WARN L193 SmtUtils]: Spent 676.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 79 [2020-10-23 19:56:27,645 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2020-10-23 19:56:28,303 WARN L193 SmtUtils]: Spent 651.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 80 [2020-10-23 19:56:28,528 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-10-23 19:56:29,248 WARN L193 SmtUtils]: Spent 711.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 81 [2020-10-23 19:56:29,486 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2020-10-23 19:56:30,214 WARN L193 SmtUtils]: Spent 721.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 82 [2020-10-23 19:56:30,437 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-10-23 19:56:31,244 WARN L193 SmtUtils]: Spent 801.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 90 [2020-10-23 19:56:31,521 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2020-10-23 19:56:32,350 WARN L193 SmtUtils]: Spent 821.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 89 [2020-10-23 19:56:32,630 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2020-10-23 19:56:33,429 WARN L193 SmtUtils]: Spent 788.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 89 [2020-10-23 19:56:33,730 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2020-10-23 19:56:34,562 WARN L193 SmtUtils]: Spent 821.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 89 [2020-10-23 19:56:34,858 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2020-10-23 19:56:36,142 WARN L193 SmtUtils]: Spent 1.20 s on a formula simplification. DAG size of input: 190 DAG size of output: 188 [2020-10-23 19:56:37,490 WARN L193 SmtUtils]: Spent 1.30 s on a formula simplification. DAG size of input: 190 DAG size of output: 188 [2020-10-23 19:56:38,833 WARN L193 SmtUtils]: Spent 1.29 s on a formula simplification. DAG size of input: 190 DAG size of output: 188 [2020-10-23 19:56:40,134 WARN L193 SmtUtils]: Spent 1.24 s on a formula simplification. DAG size of input: 190 DAG size of output: 188 [2020-10-23 19:56:41,458 WARN L193 SmtUtils]: Spent 1.28 s on a formula simplification. DAG size of input: 190 DAG size of output: 188 [2020-10-23 19:56:42,829 WARN L193 SmtUtils]: Spent 1.33 s on a formula simplification. DAG size of input: 190 DAG size of output: 188 [2020-10-23 19:56:44,252 WARN L193 SmtUtils]: Spent 1.38 s on a formula simplification. DAG size of input: 190 DAG size of output: 188 [2020-10-23 19:56:45,676 WARN L193 SmtUtils]: Spent 1.39 s on a formula simplification. DAG size of input: 190 DAG size of output: 188 [2020-10-23 19:56:45,681 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 19:56:47,068 WARN L193 SmtUtils]: Spent 1.36 s on a formula simplification. DAG size of input: 191 DAG size of output: 188 [2020-10-23 19:56:48,524 WARN L193 SmtUtils]: Spent 1.41 s on a formula simplification. DAG size of input: 191 DAG size of output: 188 [2020-10-23 19:56:49,923 WARN L193 SmtUtils]: Spent 1.37 s on a formula simplification. DAG size of input: 191 DAG size of output: 188 [2020-10-23 19:56:51,316 WARN L193 SmtUtils]: Spent 1.36 s on a formula simplification. DAG size of input: 191 DAG size of output: 188 [2020-10-23 19:56:52,718 WARN L193 SmtUtils]: Spent 1.37 s on a formula simplification. DAG size of input: 191 DAG size of output: 188 [2020-10-23 19:56:54,110 WARN L193 SmtUtils]: Spent 1.36 s on a formula simplification. DAG size of input: 191 DAG size of output: 188 [2020-10-23 19:56:55,522 WARN L193 SmtUtils]: Spent 1.37 s on a formula simplification. DAG size of input: 191 DAG size of output: 188 [2020-10-23 19:56:56,905 WARN L193 SmtUtils]: Spent 1.34 s on a formula simplification. DAG size of input: 191 DAG size of output: 188 [2020-10-23 19:56:56,908 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 19:56:58,203 WARN L193 SmtUtils]: Spent 1.27 s on a formula simplification. DAG size of input: 191 DAG size of output: 188 [2020-10-23 19:56:59,597 WARN L193 SmtUtils]: Spent 1.35 s on a formula simplification. DAG size of input: 191 DAG size of output: 188 [2020-10-23 19:57:00,951 WARN L193 SmtUtils]: Spent 1.31 s on a formula simplification. DAG size of input: 191 DAG size of output: 188 [2020-10-23 19:57:02,287 WARN L193 SmtUtils]: Spent 1.30 s on a formula simplification. DAG size of input: 191 DAG size of output: 188 [2020-10-23 19:57:03,639 WARN L193 SmtUtils]: Spent 1.31 s on a formula simplification. DAG size of input: 191 DAG size of output: 188 [2020-10-23 19:57:04,976 WARN L193 SmtUtils]: Spent 1.31 s on a formula simplification. DAG size of input: 191 DAG size of output: 188 [2020-10-23 19:57:06,297 WARN L193 SmtUtils]: Spent 1.29 s on a formula simplification. DAG size of input: 191 DAG size of output: 188 [2020-10-23 19:57:07,612 WARN L193 SmtUtils]: Spent 1.28 s on a formula simplification. DAG size of input: 191 DAG size of output: 188 [2020-10-23 19:57:07,616 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 19:57:08,950 WARN L193 SmtUtils]: Spent 1.31 s on a formula simplification. DAG size of input: 196 DAG size of output: 188 [2020-10-23 19:57:10,360 WARN L193 SmtUtils]: Spent 1.36 s on a formula simplification. DAG size of input: 196 DAG size of output: 188 [2020-10-23 19:57:11,784 WARN L193 SmtUtils]: Spent 1.35 s on a formula simplification. DAG size of input: 196 DAG size of output: 188 [2020-10-23 19:57:13,219 WARN L193 SmtUtils]: Spent 1.40 s on a formula simplification. DAG size of input: 196 DAG size of output: 188 [2020-10-23 19:57:14,644 WARN L193 SmtUtils]: Spent 1.39 s on a formula simplification. DAG size of input: 196 DAG size of output: 188 [2020-10-23 19:57:16,112 WARN L193 SmtUtils]: Spent 1.43 s on a formula simplification. DAG size of input: 196 DAG size of output: 188 [2020-10-23 19:57:17,582 WARN L193 SmtUtils]: Spent 1.43 s on a formula simplification. DAG size of input: 196 DAG size of output: 188 [2020-10-23 19:57:19,085 WARN L193 SmtUtils]: Spent 1.47 s on a formula simplification. DAG size of input: 196 DAG size of output: 188 [2020-10-23 19:57:20,542 WARN L193 SmtUtils]: Spent 1.42 s on a formula simplification. DAG size of input: 196 DAG size of output: 188 [2020-10-23 19:57:21,999 WARN L193 SmtUtils]: Spent 1.42 s on a formula simplification. DAG size of input: 196 DAG size of output: 188 [2020-10-23 19:57:23,449 WARN L193 SmtUtils]: Spent 1.42 s on a formula simplification. DAG size of input: 196 DAG size of output: 188 [2020-10-23 19:57:24,905 WARN L193 SmtUtils]: Spent 1.42 s on a formula simplification. DAG size of input: 196 DAG size of output: 188 [2020-10-23 19:57:26,366 WARN L193 SmtUtils]: Spent 1.42 s on a formula simplification. DAG size of input: 196 DAG size of output: 188 [2020-10-23 19:57:27,725 WARN L193 SmtUtils]: Spent 1.32 s on a formula simplification. DAG size of input: 196 DAG size of output: 188 [2020-10-23 19:57:29,128 WARN L193 SmtUtils]: Spent 1.37 s on a formula simplification. DAG size of input: 196 DAG size of output: 188 [2020-10-23 19:57:30,518 WARN L193 SmtUtils]: Spent 1.36 s on a formula simplification. DAG size of input: 196 DAG size of output: 188 [2020-10-23 19:57:30,521 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 19:57:31,929 WARN L193 SmtUtils]: Spent 1.38 s on a formula simplification. DAG size of input: 190 DAG size of output: 187 [2020-10-23 19:57:33,317 WARN L193 SmtUtils]: Spent 1.36 s on a formula simplification. DAG size of input: 190 DAG size of output: 187 [2020-10-23 19:57:34,701 WARN L193 SmtUtils]: Spent 1.35 s on a formula simplification. DAG size of input: 190 DAG size of output: 187 [2020-10-23 19:57:36,019 WARN L193 SmtUtils]: Spent 1.28 s on a formula simplification. DAG size of input: 190 DAG size of output: 187 [2020-10-23 19:57:37,433 WARN L193 SmtUtils]: Spent 1.38 s on a formula simplification. DAG size of input: 190 DAG size of output: 187 [2020-10-23 19:57:38,760 WARN L193 SmtUtils]: Spent 1.28 s on a formula simplification. DAG size of input: 190 DAG size of output: 187 [2020-10-23 19:57:40,141 WARN L193 SmtUtils]: Spent 1.35 s on a formula simplification. DAG size of input: 190 DAG size of output: 187 [2020-10-23 19:57:41,549 WARN L193 SmtUtils]: Spent 1.38 s on a formula simplification. DAG size of input: 190 DAG size of output: 187 [2020-10-23 19:57:41,552 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 19:57:43,033 WARN L193 SmtUtils]: Spent 1.45 s on a formula simplification. DAG size of input: 195 DAG size of output: 187 [2020-10-23 19:57:44,502 WARN L193 SmtUtils]: Spent 1.43 s on a formula simplification. DAG size of input: 195 DAG size of output: 187 [2020-10-23 19:57:45,954 WARN L193 SmtUtils]: Spent 1.41 s on a formula simplification. DAG size of input: 195 DAG size of output: 187 [2020-10-23 19:57:47,422 WARN L193 SmtUtils]: Spent 1.43 s on a formula simplification. DAG size of input: 195 DAG size of output: 187 [2020-10-23 19:57:48,895 WARN L193 SmtUtils]: Spent 1.44 s on a formula simplification. DAG size of input: 195 DAG size of output: 187 [2020-10-23 19:57:50,395 WARN L193 SmtUtils]: Spent 1.45 s on a formula simplification. DAG size of input: 195 DAG size of output: 187 [2020-10-23 19:57:51,822 WARN L193 SmtUtils]: Spent 1.39 s on a formula simplification. DAG size of input: 195 DAG size of output: 187 [2020-10-23 19:57:53,280 WARN L193 SmtUtils]: Spent 1.42 s on a formula simplification. DAG size of input: 195 DAG size of output: 187 [2020-10-23 19:57:54,689 WARN L193 SmtUtils]: Spent 1.38 s on a formula simplification. DAG size of input: 195 DAG size of output: 187 [2020-10-23 19:57:56,062 WARN L193 SmtUtils]: Spent 1.32 s on a formula simplification. DAG size of input: 195 DAG size of output: 187 [2020-10-23 19:57:57,396 WARN L193 SmtUtils]: Spent 1.30 s on a formula simplification. DAG size of input: 195 DAG size of output: 187 [2020-10-23 19:57:58,871 WARN L193 SmtUtils]: Spent 1.40 s on a formula simplification. DAG size of input: 195 DAG size of output: 187 [2020-10-23 19:58:00,267 WARN L193 SmtUtils]: Spent 1.36 s on a formula simplification. DAG size of input: 195 DAG size of output: 187 [2020-10-23 19:58:01,642 WARN L193 SmtUtils]: Spent 1.34 s on a formula simplification. DAG size of input: 195 DAG size of output: 187 [2020-10-23 19:58:03,103 WARN L193 SmtUtils]: Spent 1.43 s on a formula simplification. DAG size of input: 195 DAG size of output: 187 [2020-10-23 19:58:04,544 WARN L193 SmtUtils]: Spent 1.40 s on a formula simplification. DAG size of input: 195 DAG size of output: 187 [2020-10-23 19:58:04,547 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 19:58:05,955 WARN L193 SmtUtils]: Spent 1.37 s on a formula simplification. DAG size of input: 190 DAG size of output: 185 [2020-10-23 19:58:07,256 WARN L193 SmtUtils]: Spent 1.27 s on a formula simplification. DAG size of input: 190 DAG size of output: 185 [2020-10-23 19:58:08,589 WARN L193 SmtUtils]: Spent 1.28 s on a formula simplification. DAG size of input: 190 DAG size of output: 185 [2020-10-23 19:58:09,992 WARN L193 SmtUtils]: Spent 1.37 s on a formula simplification. DAG size of input: 190 DAG size of output: 186 [2020-10-23 19:58:11,400 WARN L193 SmtUtils]: Spent 1.37 s on a formula simplification. DAG size of input: 190 DAG size of output: 186 [2020-10-23 19:58:12,797 WARN L193 SmtUtils]: Spent 1.37 s on a formula simplification. DAG size of input: 190 DAG size of output: 186 [2020-10-23 19:58:14,243 WARN L193 SmtUtils]: Spent 1.42 s on a formula simplification. DAG size of input: 190 DAG size of output: 185 [2020-10-23 19:58:15,641 WARN L193 SmtUtils]: Spent 1.37 s on a formula simplification. DAG size of input: 190 DAG size of output: 186 [2020-10-23 19:58:15,644 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 19:58:17,093 WARN L193 SmtUtils]: Spent 1.41 s on a formula simplification. DAG size of input: 192 DAG size of output: 189 [2020-10-23 19:58:18,549 WARN L193 SmtUtils]: Spent 1.43 s on a formula simplification. DAG size of input: 192 DAG size of output: 189 [2020-10-23 19:58:19,969 WARN L193 SmtUtils]: Spent 1.39 s on a formula simplification. DAG size of input: 192 DAG size of output: 189 [2020-10-23 19:58:21,415 WARN L193 SmtUtils]: Spent 1.42 s on a formula simplification. DAG size of input: 192 DAG size of output: 189 [2020-10-23 19:58:22,888 WARN L193 SmtUtils]: Spent 1.42 s on a formula simplification. DAG size of input: 192 DAG size of output: 189 [2020-10-23 19:58:24,336 WARN L193 SmtUtils]: Spent 1.42 s on a formula simplification. DAG size of input: 192 DAG size of output: 189 [2020-10-23 19:58:25,798 WARN L193 SmtUtils]: Spent 1.42 s on a formula simplification. DAG size of input: 192 DAG size of output: 189 [2020-10-23 19:58:27,244 WARN L193 SmtUtils]: Spent 1.41 s on a formula simplification. DAG size of input: 192 DAG size of output: 189 [2020-10-23 19:58:27,247 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 19:58:28,629 WARN L193 SmtUtils]: Spent 1.36 s on a formula simplification. DAG size of input: 189 DAG size of output: 184 [2020-10-23 19:58:30,031 WARN L193 SmtUtils]: Spent 1.37 s on a formula simplification. DAG size of input: 189 DAG size of output: 184 [2020-10-23 19:58:31,383 WARN L193 SmtUtils]: Spent 1.32 s on a formula simplification. DAG size of input: 189 DAG size of output: 184 [2020-10-23 19:58:32,753 WARN L193 SmtUtils]: Spent 1.34 s on a formula simplification. DAG size of input: 189 DAG size of output: 183 [2020-10-23 19:58:34,121 WARN L193 SmtUtils]: Spent 1.34 s on a formula simplification. DAG size of input: 189 DAG size of output: 184 [2020-10-23 19:58:35,502 WARN L193 SmtUtils]: Spent 1.35 s on a formula simplification. DAG size of input: 189 DAG size of output: 183 [2020-10-23 19:58:36,865 WARN L193 SmtUtils]: Spent 1.33 s on a formula simplification. DAG size of input: 189 DAG size of output: 183 [2020-10-23 19:58:38,261 WARN L193 SmtUtils]: Spent 1.37 s on a formula simplification. DAG size of input: 189 DAG size of output: 183 [2020-10-23 19:58:38,264 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 19:58:39,599 WARN L193 SmtUtils]: Spent 1.31 s on a formula simplification. DAG size of input: 190 DAG size of output: 187 [2020-10-23 19:58:40,927 WARN L193 SmtUtils]: Spent 1.30 s on a formula simplification. DAG size of input: 190 DAG size of output: 187 [2020-10-23 19:58:42,320 WARN L193 SmtUtils]: Spent 1.37 s on a formula simplification. DAG size of input: 190 DAG size of output: 187 [2020-10-23 19:58:43,742 WARN L193 SmtUtils]: Spent 1.39 s on a formula simplification. DAG size of input: 190 DAG size of output: 187 [2020-10-23 19:58:45,208 WARN L193 SmtUtils]: Spent 1.43 s on a formula simplification. DAG size of input: 190 DAG size of output: 187 [2020-10-23 19:58:46,681 WARN L193 SmtUtils]: Spent 1.44 s on a formula simplification. DAG size of input: 190 DAG size of output: 187 [2020-10-23 19:58:48,107 WARN L193 SmtUtils]: Spent 1.40 s on a formula simplification. DAG size of input: 190 DAG size of output: 187 [2020-10-23 19:58:49,568 WARN L193 SmtUtils]: Spent 1.43 s on a formula simplification. DAG size of input: 190 DAG size of output: 187 [2020-10-23 19:58:49,571 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 19:58:51,057 WARN L193 SmtUtils]: Spent 1.46 s on a formula simplification. DAG size of input: 196 DAG size of output: 188 [2020-10-23 19:58:52,543 WARN L193 SmtUtils]: Spent 1.45 s on a formula simplification. DAG size of input: 196 DAG size of output: 188 [2020-10-23 19:58:53,987 WARN L193 SmtUtils]: Spent 1.41 s on a formula simplification. DAG size of input: 196 DAG size of output: 188 [2020-10-23 19:58:55,467 WARN L193 SmtUtils]: Spent 1.45 s on a formula simplification. DAG size of input: 196 DAG size of output: 188 [2020-10-23 19:58:56,874 WARN L193 SmtUtils]: Spent 1.38 s on a formula simplification. DAG size of input: 196 DAG size of output: 188 [2020-10-23 19:58:58,284 WARN L193 SmtUtils]: Spent 1.37 s on a formula simplification. DAG size of input: 196 DAG size of output: 188 [2020-10-23 19:58:59,726 WARN L193 SmtUtils]: Spent 1.41 s on a formula simplification. DAG size of input: 196 DAG size of output: 188 [2020-10-23 19:59:01,182 WARN L193 SmtUtils]: Spent 1.43 s on a formula simplification. DAG size of input: 196 DAG size of output: 188 [2020-10-23 19:59:02,569 WARN L193 SmtUtils]: Spent 1.36 s on a formula simplification. DAG size of input: 196 DAG size of output: 188 [2020-10-23 19:59:04,001 WARN L193 SmtUtils]: Spent 1.40 s on a formula simplification. DAG size of input: 196 DAG size of output: 188 [2020-10-23 19:59:05,398 WARN L193 SmtUtils]: Spent 1.37 s on a formula simplification. DAG size of input: 196 DAG size of output: 188 [2020-10-23 19:59:06,753 WARN L193 SmtUtils]: Spent 1.33 s on a formula simplification. DAG size of input: 196 DAG size of output: 188 [2020-10-23 19:59:08,114 WARN L193 SmtUtils]: Spent 1.33 s on a formula simplification. DAG size of input: 196 DAG size of output: 188 [2020-10-23 19:59:09,501 WARN L193 SmtUtils]: Spent 1.36 s on a formula simplification. DAG size of input: 196 DAG size of output: 188 [2020-10-23 19:59:10,971 WARN L193 SmtUtils]: Spent 1.44 s on a formula simplification. DAG size of input: 196 DAG size of output: 188 [2020-10-23 19:59:12,437 WARN L193 SmtUtils]: Spent 1.44 s on a formula simplification. DAG size of input: 196 DAG size of output: 188 [2020-10-23 19:59:12,441 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 19:59:13,836 WARN L193 SmtUtils]: Spent 1.37 s on a formula simplification. DAG size of input: 194 DAG size of output: 183 [2020-10-23 19:59:15,184 WARN L193 SmtUtils]: Spent 1.32 s on a formula simplification. DAG size of input: 194 DAG size of output: 184 [2020-10-23 19:59:16,586 WARN L193 SmtUtils]: Spent 1.36 s on a formula simplification. DAG size of input: 194 DAG size of output: 184 [2020-10-23 19:59:17,994 WARN L193 SmtUtils]: Spent 1.38 s on a formula simplification. DAG size of input: 194 DAG size of output: 184 [2020-10-23 19:59:19,358 WARN L193 SmtUtils]: Spent 1.33 s on a formula simplification. DAG size of input: 194 DAG size of output: 184 [2020-10-23 19:59:20,777 WARN L193 SmtUtils]: Spent 1.39 s on a formula simplification. DAG size of input: 194 DAG size of output: 184 [2020-10-23 19:59:22,238 WARN L193 SmtUtils]: Spent 1.43 s on a formula simplification. DAG size of input: 194 DAG size of output: 184 [2020-10-23 19:59:23,711 WARN L193 SmtUtils]: Spent 1.44 s on a formula simplification. DAG size of input: 194 DAG size of output: 183 [2020-10-23 19:59:25,182 WARN L193 SmtUtils]: Spent 1.44 s on a formula simplification. DAG size of input: 194 DAG size of output: 184 [2020-10-23 19:59:26,651 WARN L193 SmtUtils]: Spent 1.44 s on a formula simplification. DAG size of input: 194 DAG size of output: 184 [2020-10-23 19:59:28,121 WARN L193 SmtUtils]: Spent 1.44 s on a formula simplification. DAG size of input: 194 DAG size of output: 184 [2020-10-23 19:59:29,577 WARN L193 SmtUtils]: Spent 1.42 s on a formula simplification. DAG size of input: 194 DAG size of output: 184 [2020-10-23 19:59:31,027 WARN L193 SmtUtils]: Spent 1.42 s on a formula simplification. DAG size of input: 194 DAG size of output: 183 [2020-10-23 19:59:32,494 WARN L193 SmtUtils]: Spent 1.44 s on a formula simplification. DAG size of input: 194 DAG size of output: 183 [2020-10-23 19:59:33,939 WARN L193 SmtUtils]: Spent 1.42 s on a formula simplification. DAG size of input: 194 DAG size of output: 184 [2020-10-23 19:59:35,390 WARN L193 SmtUtils]: Spent 1.42 s on a formula simplification. DAG size of input: 194 DAG size of output: 184 [2020-10-23 19:59:35,393 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 19:59:36,842 WARN L193 SmtUtils]: Spent 1.41 s on a formula simplification. DAG size of input: 194 DAG size of output: 184 [2020-10-23 19:59:38,304 WARN L193 SmtUtils]: Spent 1.43 s on a formula simplification. DAG size of input: 194 DAG size of output: 183 [2020-10-23 19:59:39,729 WARN L193 SmtUtils]: Spent 1.39 s on a formula simplification. DAG size of input: 194 DAG size of output: 184 [2020-10-23 19:59:41,196 WARN L193 SmtUtils]: Spent 1.44 s on a formula simplification. DAG size of input: 194 DAG size of output: 184 [2020-10-23 19:59:42,620 WARN L193 SmtUtils]: Spent 1.39 s on a formula simplification. DAG size of input: 194 DAG size of output: 184 [2020-10-23 19:59:44,102 WARN L193 SmtUtils]: Spent 1.45 s on a formula simplification. DAG size of input: 194 DAG size of output: 184 [2020-10-23 19:59:45,557 WARN L193 SmtUtils]: Spent 1.43 s on a formula simplification. DAG size of input: 194 DAG size of output: 184 [2020-10-23 19:59:47,033 WARN L193 SmtUtils]: Spent 1.45 s on a formula simplification. DAG size of input: 194 DAG size of output: 183 [2020-10-23 19:59:48,484 WARN L193 SmtUtils]: Spent 1.42 s on a formula simplification. DAG size of input: 194 DAG size of output: 184 [2020-10-23 19:59:49,934 WARN L193 SmtUtils]: Spent 1.42 s on a formula simplification. DAG size of input: 194 DAG size of output: 184 [2020-10-23 19:59:51,404 WARN L193 SmtUtils]: Spent 1.44 s on a formula simplification. DAG size of input: 194 DAG size of output: 183 [2020-10-23 19:59:52,864 WARN L193 SmtUtils]: Spent 1.43 s on a formula simplification. DAG size of input: 194 DAG size of output: 184 [2020-10-23 19:59:54,307 WARN L193 SmtUtils]: Spent 1.41 s on a formula simplification. DAG size of input: 194 DAG size of output: 184 [2020-10-23 19:59:55,770 WARN L193 SmtUtils]: Spent 1.43 s on a formula simplification. DAG size of input: 194 DAG size of output: 184 [2020-10-23 19:59:57,198 WARN L193 SmtUtils]: Spent 1.40 s on a formula simplification. DAG size of input: 194 DAG size of output: 184 [2020-10-23 19:59:58,678 WARN L193 SmtUtils]: Spent 1.45 s on a formula simplification. DAG size of input: 194 DAG size of output: 183 [2020-10-23 19:59:58,682 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:00:00,148 WARN L193 SmtUtils]: Spent 1.44 s on a formula simplification. DAG size of input: 194 DAG size of output: 184 [2020-10-23 20:00:01,632 WARN L193 SmtUtils]: Spent 1.45 s on a formula simplification. DAG size of input: 194 DAG size of output: 184 [2020-10-23 20:00:03,120 WARN L193 SmtUtils]: Spent 1.46 s on a formula simplification. DAG size of input: 194 DAG size of output: 184 [2020-10-23 20:00:04,587 WARN L193 SmtUtils]: Spent 1.44 s on a formula simplification. DAG size of input: 194 DAG size of output: 183 [2020-10-23 20:00:06,074 WARN L193 SmtUtils]: Spent 1.46 s on a formula simplification. DAG size of input: 194 DAG size of output: 183 [2020-10-23 20:00:07,534 WARN L193 SmtUtils]: Spent 1.43 s on a formula simplification. DAG size of input: 194 DAG size of output: 184 [2020-10-23 20:00:09,006 WARN L193 SmtUtils]: Spent 1.44 s on a formula simplification. DAG size of input: 194 DAG size of output: 184 [2020-10-23 20:00:10,457 WARN L193 SmtUtils]: Spent 1.42 s on a formula simplification. DAG size of input: 194 DAG size of output: 184 [2020-10-23 20:00:11,816 WARN L193 SmtUtils]: Spent 1.33 s on a formula simplification. DAG size of input: 194 DAG size of output: 184 [2020-10-23 20:00:13,252 WARN L193 SmtUtils]: Spent 1.41 s on a formula simplification. DAG size of input: 194 DAG size of output: 184 [2020-10-23 20:00:14,738 WARN L193 SmtUtils]: Spent 1.46 s on a formula simplification. DAG size of input: 194 DAG size of output: 183 [2020-10-23 20:00:16,241 WARN L193 SmtUtils]: Spent 1.47 s on a formula simplification. DAG size of input: 194 DAG size of output: 184 [2020-10-23 20:00:17,725 WARN L193 SmtUtils]: Spent 1.45 s on a formula simplification. DAG size of input: 194 DAG size of output: 184 [2020-10-23 20:00:19,238 WARN L193 SmtUtils]: Spent 1.48 s on a formula simplification. DAG size of input: 194 DAG size of output: 184 [2020-10-23 20:00:20,713 WARN L193 SmtUtils]: Spent 1.45 s on a formula simplification. DAG size of input: 194 DAG size of output: 184 [2020-10-23 20:00:22,197 WARN L193 SmtUtils]: Spent 1.46 s on a formula simplification. DAG size of input: 194 DAG size of output: 183 [2020-10-23 20:00:22,200 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:00:23,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 20:00:23,042 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 20:00:23,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 20:00:23,846 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 20:00:24,120 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-23 20:00:24,121 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-23 20:00:24,124 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-23 20:00:24,162 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 08:00:24 BoogieIcfgContainer [2020-10-23 20:00:24,162 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 20:00:24,164 INFO L168 Benchmark]: Toolchain (without parser) took 357459.66 ms. Allocated memory was 157.3 MB in the beginning and 1.2 GB in the end (delta: 1.0 GB). Free memory was 132.7 MB in the beginning and 369.1 MB in the end (delta: -236.4 MB). Peak memory consumption was 787.5 MB. Max. memory is 8.0 GB. [2020-10-23 20:00:24,164 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 125.8 MB. Free memory was 101.1 MB in the beginning and 101.0 MB in the end (delta: 68.4 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 20:00:24,165 INFO L168 Benchmark]: CACSL2BoogieTranslator took 700.96 ms. Allocated memory is still 157.3 MB. Free memory was 132.1 MB in the beginning and 110.2 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. [2020-10-23 20:00:24,165 INFO L168 Benchmark]: Boogie Preprocessor took 149.54 ms. Allocated memory is still 157.3 MB. Free memory was 110.2 MB in the beginning and 138.7 MB in the end (delta: -28.5 MB). Peak memory consumption was 7.1 MB. Max. memory is 8.0 GB. [2020-10-23 20:00:24,165 INFO L168 Benchmark]: RCFGBuilder took 1879.57 ms. Allocated memory is still 157.3 MB. Free memory was 138.7 MB in the beginning and 131.8 MB in the end (delta: 6.9 MB). Peak memory consumption was 65.6 MB. Max. memory is 8.0 GB. [2020-10-23 20:00:24,166 INFO L168 Benchmark]: TraceAbstraction took 354710.06 ms. Allocated memory was 157.3 MB in the beginning and 1.2 GB in the end (delta: 1.0 GB). Free memory was 131.3 MB in the beginning and 369.1 MB in the end (delta: -237.8 MB). Peak memory consumption was 785.1 MB. Max. memory is 8.0 GB. [2020-10-23 20:00:24,168 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 125.8 MB. Free memory was 101.1 MB in the beginning and 101.0 MB in the end (delta: 68.4 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 700.96 ms. Allocated memory is still 157.3 MB. Free memory was 132.1 MB in the beginning and 110.2 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 149.54 ms. Allocated memory is still 157.3 MB. Free memory was 110.2 MB in the beginning and 138.7 MB in the end (delta: -28.5 MB). Peak memory consumption was 7.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1879.57 ms. Allocated memory is still 157.3 MB. Free memory was 138.7 MB in the beginning and 131.8 MB in the end (delta: 6.9 MB). Peak memory consumption was 65.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 354710.06 ms. Allocated memory was 157.3 MB in the beginning and 1.2 GB in the end (delta: 1.0 GB). Free memory was 131.3 MB in the beginning and 369.1 MB in the end (delta: -237.8 MB). Peak memory consumption was 785.1 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: [L88] int waterLevel = 1; [L89] int methaneLevelCritical = 0; [L265] int pumpRunning = 0; [L266] int systemActive = 1; [L673] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L871] int methAndRunningLastTime ; [L910] int cleanupTimeShifts = 4; [L984] int retValue_acc ; [L985] int tmp ; [L989] FCALL select_helpers() [L990] FCALL select_features() [L991] CALL, EXPR valid_product() [L71] int retValue_acc ; [L74] retValue_acc = 1 [L75] return (retValue_acc); [L991] RET, EXPR valid_product() [L991] tmp = valid_product() [L993] COND TRUE \read(tmp) [L995] FCALL setup() [L996] CALL runTest() [L977] CALL __utac_acc__Specification2_spec__1() [L876] methAndRunningLastTime = 0 [L977] RET __utac_acc__Specification2_spec__1() [L978] CALL test() [L195] int splverifierCounter ; [L196] int tmp ; [L197] int tmp___0 ; [L198] int tmp___1 ; [L199] int tmp___2 ; [L202] splverifierCounter = 0 [L204] COND TRUE 1 [L206] COND TRUE splverifierCounter < 4 [L212] tmp = __VERIFIER_nondet_int() [L214] COND TRUE \read(tmp) [L216] CALL waterRise() [L106] COND TRUE waterLevel < 2 [L107] waterLevel = waterLevel + 1 [L216] RET waterRise() [L222] tmp___0 = __VERIFIER_nondet_int() [L224] COND TRUE \read(tmp___0) [L226] CALL changeMethaneLevel() [L118] COND FALSE !(\read(methaneLevelCritical)) [L121] methaneLevelCritical = 1 [L226] RET changeMethaneLevel() [L232] tmp___2 = __VERIFIER_nondet_int() [L234] COND TRUE \read(tmp___2) [L249] CALL timeShift() [L273] COND FALSE !(\read(pumpRunning)) [L280] COND TRUE \read(systemActive) [L282] CALL processEnvironment() [L354] int tmp ; [L357] COND FALSE !(\read(pumpRunning)) [L372] CALL processEnvironment__wrappee__lowWaterSensor() [L328] int tmp ; [L331] COND FALSE !(\read(pumpRunning)) [L346] CALL processEnvironment__wrappee__highWaterSensor() [L302] int tmp ; [L305] COND TRUE ! pumpRunning [L307] CALL, EXPR isHighWaterLevel() [L451] int retValue_acc ; [L452] int tmp ; [L453] int tmp___0 ; [L457] CALL, EXPR isHighWaterSensorDry() [L168] int retValue_acc ; [L171] COND FALSE !(waterLevel < 2) [L175] retValue_acc = 0 [L176] return (retValue_acc); [L457] RET, EXPR isHighWaterSensorDry() [L457] tmp = isHighWaterSensorDry() [L459] COND FALSE !(\read(tmp)) [L462] tmp___0 = 1 [L464] retValue_acc = tmp___0 [L465] return (retValue_acc); [L307] RET, EXPR isHighWaterLevel() [L307] tmp = isHighWaterLevel() [L309] COND TRUE \read(tmp) [L311] CALL activatePump() [L382] pumpRunning = 1 [L311] RET activatePump() [L346] RET processEnvironment__wrappee__highWaterSensor() [L372] RET processEnvironment__wrappee__lowWaterSensor() [L282] RET processEnvironment() [L288] CALL __utac_acc__Specification2_spec__2() [L881] int tmp ; [L882] int tmp___0 ; [L886] CALL, EXPR isMethaneLevelCritical() [L127] int retValue_acc ; [L130] retValue_acc = methaneLevelCritical [L131] return (retValue_acc); [L886] RET, EXPR isMethaneLevelCritical() [L886] tmp = isMethaneLevelCritical() [L888] COND TRUE \read(tmp) [L890] CALL, EXPR isPumpRunning() [L406] int retValue_acc ; [L409] retValue_acc = pumpRunning [L410] return (retValue_acc); [L890] RET, EXPR isPumpRunning() [L890] tmp___0 = isPumpRunning() [L892] COND TRUE \read(tmp___0) [L893] COND FALSE !(\read(methAndRunningLastTime)) [L898] methAndRunningLastTime = 1 [L288] RET __utac_acc__Specification2_spec__2() [L249] RET timeShift() [L204] COND TRUE 1 [L206] COND TRUE splverifierCounter < 4 [L212] tmp = __VERIFIER_nondet_int() [L214] COND FALSE !(\read(tmp)) [L222] tmp___0 = __VERIFIER_nondet_int() [L224] COND FALSE !(\read(tmp___0)) [L232] tmp___2 = __VERIFIER_nondet_int() [L234] COND TRUE \read(tmp___2) [L249] CALL timeShift() [L273] COND FALSE !(\read(pumpRunning)) [L280] COND TRUE \read(systemActive) [L282] CALL processEnvironment() [L354] int tmp ; [L357] COND FALSE !(\read(pumpRunning)) [L372] CALL processEnvironment__wrappee__lowWaterSensor() [L328] int tmp ; [L331] COND FALSE !(\read(pumpRunning)) [L346] CALL processEnvironment__wrappee__highWaterSensor() [L302] int tmp ; [L305] COND TRUE ! pumpRunning [L307] CALL, EXPR isHighWaterLevel() [L451] int retValue_acc ; [L452] int tmp ; [L453] int tmp___0 ; [L457] CALL, EXPR isHighWaterSensorDry() [L168] int retValue_acc ; [L171] COND FALSE !(waterLevel < 2) [L175] retValue_acc = 0 [L176] return (retValue_acc); [L457] RET, EXPR isHighWaterSensorDry() [L457] tmp = isHighWaterSensorDry() [L459] COND FALSE !(\read(tmp)) [L462] tmp___0 = 1 [L464] retValue_acc = tmp___0 [L465] return (retValue_acc); [L307] RET, EXPR isHighWaterLevel() [L307] tmp = isHighWaterLevel() [L309] COND TRUE \read(tmp) [L311] CALL activatePump() [L382] pumpRunning = 1 [L311] RET activatePump() [L346] RET processEnvironment__wrappee__highWaterSensor() [L372] RET processEnvironment__wrappee__lowWaterSensor() [L282] RET processEnvironment() [L288] CALL __utac_acc__Specification2_spec__2() [L881] int tmp ; [L882] int tmp___0 ; [L886] CALL, EXPR isMethaneLevelCritical() [L127] int retValue_acc ; [L130] retValue_acc = methaneLevelCritical [L131] return (retValue_acc); [L886] RET, EXPR isMethaneLevelCritical() [L886] tmp = isMethaneLevelCritical() [L888] COND TRUE \read(tmp) [L890] CALL, EXPR isPumpRunning() [L406] int retValue_acc ; [L409] retValue_acc = pumpRunning [L410] return (retValue_acc); [L890] RET, EXPR isPumpRunning() [L890] tmp___0 = isPumpRunning() [L892] COND TRUE \read(tmp___0) [L893] COND TRUE \read(methAndRunningLastTime) [L895] CALL __automaton_fail() [L1011] CALL reach_error() [L3] __assert_fail("0", "minepump_spec2_product55.cil.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 44 procedures, 677 locations, 5 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 354.6s, OverallIterations: 10, TraceHistogramMax: 2, AutomataDifference: 95.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2559 SDtfs, 7328 SDslu, 4630 SDs, 0 SdLazy, 10670 SolverSat, 2448 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 43.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 435 GetRequests, 257 SyntacticMatches, 5 SemanticMatches, 173 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 849 ImplicationChecksByTransitivity, 44.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4024occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 5.4s AutomataMinimizationTime, 9 MinimizatonAttempts, 2986 StatesRemovedByMinimization, 9 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...