/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_spec5_product61.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 20:22:29,367 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 20:22:29,370 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 20:22:29,424 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 20:22:29,425 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 20:22:29,430 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 20:22:29,433 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 20:22:29,442 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 20:22:29,445 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 20:22:29,453 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 20:22:29,454 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 20:22:29,455 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 20:22:29,456 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 20:22:29,459 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 20:22:29,461 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 20:22:29,463 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 20:22:29,464 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 20:22:29,469 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 20:22:29,476 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 20:22:29,500 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 20:22:29,502 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 20:22:29,504 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 20:22:29,505 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 20:22:29,506 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 20:22:29,514 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-23 20:22:29,514 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-23 20:22:29,514 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-23 20:22:29,518 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-23 20:22:29,518 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-23 20:22:29,519 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-23 20:22:29,519 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-23 20:22:29,520 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-23 20:22:29,522 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-23 20:22:29,523 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-23 20:22:29,524 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-23 20:22:29,525 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-23 20:22:29,525 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-23 20:22:29,525 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-23 20:22:29,526 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 20:22:29,527 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 20:22:29,527 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 20:22:29,528 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-10-23 20:22:29,550 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 20:22:29,550 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 20:22:29,552 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 20:22:29,552 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 20:22:29,552 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 20:22:29,552 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 20:22:29,553 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 20:22:29,553 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 20:22:29,553 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 20:22:29,553 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 20:22:29,554 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 20:22:29,554 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 20:22:29,554 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 20:22:29,554 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 20:22:29,555 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 20:22:29,555 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-23 20:22:29,555 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 20:22:29,555 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 20:22:29,555 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 20:22:29,556 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 20:22:29,556 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-23 20:22:29,556 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 20:22:29,556 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 20:22:29,943 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 20:22:29,975 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 20:22:29,978 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 20:22:29,979 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 20:22:29,980 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 20:22:29,980 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product61.cil.c [2020-10-23 20:22:30,054 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4596d14a0/6306aad29e3a48c788f5881436f5dc50/FLAGcc3083174 [2020-10-23 20:22:30,814 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 20:22:30,815 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec5_product61.cil.c [2020-10-23 20:22:30,832 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4596d14a0/6306aad29e3a48c788f5881436f5dc50/FLAGcc3083174 [2020-10-23 20:22:31,133 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4596d14a0/6306aad29e3a48c788f5881436f5dc50 [2020-10-23 20:22:31,137 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 20:22:31,149 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 20:22:31,153 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 20:22:31,153 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 20:22:31,157 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 20:22:31,158 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:22:31" (1/1) ... [2020-10-23 20:22:31,162 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28176dcd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:22:31, skipping insertion in model container [2020-10-23 20:22:31,162 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:22:31" (1/1) ... [2020-10-23 20:22:31,170 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 20:22:31,247 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 20:22:31,681 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 20:22:31,703 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 20:22:31,781 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 20:22:31,822 INFO L208 MainTranslator]: Completed translation [2020-10-23 20:22:31,823 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:22:31 WrapperNode [2020-10-23 20:22:31,823 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 20:22:31,824 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 20:22:31,824 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 20:22:31,825 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 20:22:31,837 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:22:31" (1/1) ... [2020-10-23 20:22:31,838 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:22:31" (1/1) ... [2020-10-23 20:22:31,865 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:22:31" (1/1) ... [2020-10-23 20:22:31,866 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:22:31" (1/1) ... [2020-10-23 20:22:31,936 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:22:31" (1/1) ... [2020-10-23 20:22:31,952 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:22:31" (1/1) ... [2020-10-23 20:22:31,963 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:22:31" (1/1) ... [2020-10-23 20:22:31,980 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 20:22:31,983 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 20:22:31,983 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 20:22:31,983 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 20:22:31,984 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:22:31" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 20:22:32,094 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 20:22:32,094 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 20:22:32,095 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-10-23 20:22:32,095 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 20:22:32,095 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-10-23 20:22:32,095 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-10-23 20:22:32,095 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-10-23 20:22:32,095 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-10-23 20:22:32,096 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-10-23 20:22:32,096 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-10-23 20:22:32,097 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2020-10-23 20:22:32,097 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-10-23 20:22:32,097 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-10-23 20:22:32,097 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-10-23 20:22:32,097 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-10-23 20:22:32,098 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-10-23 20:22:32,098 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-10-23 20:22:32,098 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-10-23 20:22:32,098 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-10-23 20:22:32,099 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-10-23 20:22:32,099 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-10-23 20:22:32,100 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-10-23 20:22:32,100 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-10-23 20:22:32,100 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-10-23 20:22:32,100 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-10-23 20:22:32,100 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-10-23 20:22:32,100 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-10-23 20:22:32,101 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-10-23 20:22:32,101 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-10-23 20:22:32,101 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-10-23 20:22:32,101 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-10-23 20:22:32,101 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-10-23 20:22:32,101 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2020-10-23 20:22:32,101 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2020-10-23 20:22:32,102 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2020-10-23 20:22:32,102 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-10-23 20:22:32,102 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-10-23 20:22:32,102 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-10-23 20:22:32,102 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-10-23 20:22:32,102 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-10-23 20:22:32,102 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-10-23 20:22:32,103 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-10-23 20:22:32,103 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-10-23 20:22:32,103 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-10-23 20:22:32,103 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 20:22:32,103 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 20:22:32,103 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 20:22:32,103 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 20:22:32,103 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 20:22:32,103 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-23 20:22:32,104 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-10-23 20:22:32,104 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-10-23 20:22:32,104 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-10-23 20:22:32,104 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-10-23 20:22:32,104 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-10-23 20:22:32,104 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-10-23 20:22:32,104 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-10-23 20:22:32,104 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-10-23 20:22:32,104 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-10-23 20:22:32,105 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-10-23 20:22:32,105 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-10-23 20:22:32,105 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-10-23 20:22:32,105 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-10-23 20:22:32,105 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-10-23 20:22:32,105 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-10-23 20:22:32,106 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2020-10-23 20:22:32,106 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2020-10-23 20:22:32,106 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-10-23 20:22:32,106 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-10-23 20:22:32,106 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-10-23 20:22:32,106 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-10-23 20:22:32,106 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-10-23 20:22:32,106 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-10-23 20:22:32,107 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-10-23 20:22:32,107 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2020-10-23 20:22:32,107 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-10-23 20:22:32,107 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-23 20:22:32,107 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-23 20:22:32,107 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-10-23 20:22:32,108 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-23 20:22:32,108 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-23 20:22:32,108 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 20:22:32,108 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-23 20:22:32,108 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-10-23 20:22:32,108 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 20:22:32,109 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-10-23 20:22:32,109 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-10-23 20:22:32,109 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 20:22:32,109 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-10-23 20:22:32,109 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-10-23 20:22:32,109 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-10-23 20:22:32,109 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-10-23 20:22:32,110 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2020-10-23 20:22:32,110 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-10-23 20:22:32,110 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-10-23 20:22:32,110 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-10-23 20:22:32,110 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-10-23 20:22:32,110 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-10-23 20:22:32,110 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-10-23 20:22:32,111 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-10-23 20:22:32,111 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 20:22:32,111 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 20:22:32,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 20:22:32,111 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 20:22:33,480 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 20:22:33,480 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-23 20:22:33,483 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:22:33 BoogieIcfgContainer [2020-10-23 20:22:33,483 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 20:22:33,485 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 20:22:33,486 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 20:22:33,489 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 20:22:33,490 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 08:22:31" (1/3) ... [2020-10-23 20:22:33,491 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7008a27e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:22:33, skipping insertion in model container [2020-10-23 20:22:33,491 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:22:31" (2/3) ... [2020-10-23 20:22:33,491 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7008a27e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:22:33, skipping insertion in model container [2020-10-23 20:22:33,491 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:22:33" (3/3) ... [2020-10-23 20:22:33,493 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product61.cil.c [2020-10-23 20:22:33,506 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-23 20:22:33,512 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-10-23 20:22:33,526 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-23 20:22:33,553 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 20:22:33,553 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 20:22:33,553 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-10-23 20:22:33,554 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 20:22:33,554 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 20:22:33,554 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 20:22:33,554 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 20:22:33,554 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 20:22:33,579 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states. [2020-10-23 20:22:33,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-10-23 20:22:33,601 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:22:33,602 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:22:33,603 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:22:33,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:22:33,610 INFO L82 PathProgramCache]: Analyzing trace with hash 943643778, now seen corresponding path program 1 times [2020-10-23 20:22:33,620 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:22:33,620 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1949661096] [2020-10-23 20:22:33,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:22:33,704 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:22:33,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:34,456 WARN L193 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:22:34,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:22:34,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:34,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 20:22:34,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:34,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 20:22:34,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:34,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 20:22:34,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:34,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 20:22:34,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:34,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 20:22:34,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:34,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-23 20:22:34,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:34,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:22:34,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:34,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-10-23 20:22:34,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:34,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-10-23 20:22:34,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:34,643 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-23 20:22:34,646 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1949661096] [2020-10-23 20:22:34,649 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:22:34,649 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-23 20:22:34,649 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555787296] [2020-10-23 20:22:34,656 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-23 20:22:34,657 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:22:34,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-23 20:22:34,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-23 20:22:34,674 INFO L87 Difference]: Start difference. First operand 368 states. Second operand 4 states. [2020-10-23 20:22:36,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:22:36,477 INFO L93 Difference]: Finished difference Result 589 states and 689 transitions. [2020-10-23 20:22:36,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-23 20:22:36,479 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 166 [2020-10-23 20:22:36,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:22:36,500 INFO L225 Difference]: With dead ends: 589 [2020-10-23 20:22:36,501 INFO L226 Difference]: Without dead ends: 362 [2020-10-23 20:22:36,506 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-23 20:22:36,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2020-10-23 20:22:36,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 314. [2020-10-23 20:22:36,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 314 states. [2020-10-23 20:22:36,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 344 transitions. [2020-10-23 20:22:36,755 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 344 transitions. Word has length 166 [2020-10-23 20:22:36,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:22:36,759 INFO L481 AbstractCegarLoop]: Abstraction has 314 states and 344 transitions. [2020-10-23 20:22:36,759 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-23 20:22:36,759 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 344 transitions. [2020-10-23 20:22:36,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-10-23 20:22:36,775 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:22:36,778 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:22:36,778 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 20:22:36,779 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:22:36,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:22:36,780 INFO L82 PathProgramCache]: Analyzing trace with hash -935878905, now seen corresponding path program 1 times [2020-10-23 20:22:36,780 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:22:36,780 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [103731827] [2020-10-23 20:22:36,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:22:36,791 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:22:36,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:37,353 WARN L193 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:22:37,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:22:37,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:37,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 20:22:37,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:37,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 20:22:37,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:37,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 20:22:37,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:37,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 20:22:37,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:37,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 20:22:37,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:37,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-23 20:22:37,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:37,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:22:37,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:37,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-10-23 20:22:37,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:37,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-23 20:22:37,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:37,476 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-23 20:22:37,476 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [103731827] [2020-10-23 20:22:37,477 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:22:37,477 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-23 20:22:37,477 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679077286] [2020-10-23 20:22:37,480 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-23 20:22:37,481 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:22:37,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-23 20:22:37,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-23 20:22:37,483 INFO L87 Difference]: Start difference. First operand 314 states and 344 transitions. Second operand 5 states. [2020-10-23 20:22:38,386 WARN L193 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:22:40,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:22:40,008 INFO L93 Difference]: Finished difference Result 515 states and 581 transitions. [2020-10-23 20:22:40,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-23 20:22:40,009 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 167 [2020-10-23 20:22:40,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:22:40,015 INFO L225 Difference]: With dead ends: 515 [2020-10-23 20:22:40,015 INFO L226 Difference]: Without dead ends: 351 [2020-10-23 20:22:40,018 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-23 20:22:40,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2020-10-23 20:22:40,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 304. [2020-10-23 20:22:40,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 304 states. [2020-10-23 20:22:40,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 331 transitions. [2020-10-23 20:22:40,143 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 331 transitions. Word has length 167 [2020-10-23 20:22:40,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:22:40,144 INFO L481 AbstractCegarLoop]: Abstraction has 304 states and 331 transitions. [2020-10-23 20:22:40,144 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-23 20:22:40,144 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 331 transitions. [2020-10-23 20:22:40,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-10-23 20:22:40,147 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:22:40,147 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:22:40,147 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 20:22:40,148 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:22:40,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:22:40,148 INFO L82 PathProgramCache]: Analyzing trace with hash -138574000, now seen corresponding path program 1 times [2020-10-23 20:22:40,149 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:22:40,149 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [754650187] [2020-10-23 20:22:40,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:22:40,153 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:22:40,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:40,641 WARN L193 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:22:40,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:22:40,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:40,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 20:22:40,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:40,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 20:22:40,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:40,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 20:22:40,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:40,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 20:22:40,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:40,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 20:22:40,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:40,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-23 20:22:40,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:40,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:22:40,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:40,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-10-23 20:22:40,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:40,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2020-10-23 20:22:40,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:40,846 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-23 20:22:40,846 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [754650187] [2020-10-23 20:22:40,847 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:22:40,847 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-23 20:22:40,847 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971640800] [2020-10-23 20:22:40,847 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-23 20:22:40,848 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:22:40,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-23 20:22:40,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-23 20:22:40,849 INFO L87 Difference]: Start difference. First operand 304 states and 331 transitions. Second operand 10 states. [2020-10-23 20:22:41,492 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:22:41,968 WARN L193 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 20:22:42,392 WARN L193 SmtUtils]: Spent 397.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-23 20:22:42,778 WARN L193 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:22:43,171 WARN L193 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 20:22:43,549 WARN L193 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:22:45,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:22:45,917 INFO L93 Difference]: Finished difference Result 535 states and 607 transitions. [2020-10-23 20:22:45,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-23 20:22:45,919 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 176 [2020-10-23 20:22:45,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:22:45,925 INFO L225 Difference]: With dead ends: 535 [2020-10-23 20:22:45,925 INFO L226 Difference]: Without dead ends: 351 [2020-10-23 20:22:45,933 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-10-23 20:22:45,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2020-10-23 20:22:46,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 304. [2020-10-23 20:22:46,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 304 states. [2020-10-23 20:22:46,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 330 transitions. [2020-10-23 20:22:46,080 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 330 transitions. Word has length 176 [2020-10-23 20:22:46,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:22:46,081 INFO L481 AbstractCegarLoop]: Abstraction has 304 states and 330 transitions. [2020-10-23 20:22:46,081 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-23 20:22:46,081 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 330 transitions. [2020-10-23 20:22:46,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-10-23 20:22:46,085 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:22:46,085 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:22:46,086 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-23 20:22:46,086 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:22:46,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:22:46,087 INFO L82 PathProgramCache]: Analyzing trace with hash 1044963727, now seen corresponding path program 1 times [2020-10-23 20:22:46,087 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:22:46,087 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [546944034] [2020-10-23 20:22:46,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:22:46,091 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:22:46,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:46,518 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:22:46,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:22:46,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:46,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 20:22:46,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:46,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 20:22:46,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:46,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 20:22:46,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:46,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 20:22:46,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:46,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 20:22:46,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:46,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-23 20:22:46,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:46,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:22:46,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:46,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-23 20:22:46,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:46,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:22:46,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:46,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:22:46,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:46,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:22:46,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:46,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-10-23 20:22:46,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:46,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2020-10-23 20:22:46,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:46,697 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-23 20:22:46,697 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [546944034] [2020-10-23 20:22:46,697 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:22:46,698 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-23 20:22:46,698 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841034940] [2020-10-23 20:22:46,698 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-23 20:22:46,699 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:22:46,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-23 20:22:46,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-23 20:22:46,699 INFO L87 Difference]: Start difference. First operand 304 states and 330 transitions. Second operand 7 states. [2020-10-23 20:22:47,414 WARN L193 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:22:49,785 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:22:50,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:22:50,672 INFO L93 Difference]: Finished difference Result 696 states and 797 transitions. [2020-10-23 20:22:50,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-23 20:22:50,674 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 194 [2020-10-23 20:22:50,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:22:50,680 INFO L225 Difference]: With dead ends: 696 [2020-10-23 20:22:50,680 INFO L226 Difference]: Without dead ends: 512 [2020-10-23 20:22:50,682 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2020-10-23 20:22:50,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 512 states. [2020-10-23 20:22:50,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 512 to 442. [2020-10-23 20:22:50,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 442 states. [2020-10-23 20:22:50,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 477 transitions. [2020-10-23 20:22:50,880 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 477 transitions. Word has length 194 [2020-10-23 20:22:50,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:22:50,881 INFO L481 AbstractCegarLoop]: Abstraction has 442 states and 477 transitions. [2020-10-23 20:22:50,881 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-23 20:22:50,881 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 477 transitions. [2020-10-23 20:22:50,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2020-10-23 20:22:50,884 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:22:50,885 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:22:50,885 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-23 20:22:50,885 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:22:50,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:22:50,886 INFO L82 PathProgramCache]: Analyzing trace with hash 1573361042, now seen corresponding path program 1 times [2020-10-23 20:22:50,886 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:22:50,886 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2064753663] [2020-10-23 20:22:50,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:22:50,890 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:22:50,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:51,364 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:22:51,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:22:51,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:51,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 20:22:51,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:51,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 20:22:51,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:51,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 20:22:51,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:51,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 20:22:51,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:51,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 20:22:51,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:51,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-23 20:22:51,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:51,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:22:51,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:51,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-23 20:22:51,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:51,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:22:51,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:51,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:22:51,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:51,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:22:51,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:51,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 20:22:51,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:51,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 20:22:51,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:51,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-10-23 20:22:51,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:51,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-23 20:22:51,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:51,628 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-23 20:22:51,628 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2064753663] [2020-10-23 20:22:51,628 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:22:51,629 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-23 20:22:51,629 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440845924] [2020-10-23 20:22:51,629 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-23 20:22:51,629 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:22:51,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-23 20:22:51,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-23 20:22:51,630 INFO L87 Difference]: Start difference. First operand 442 states and 477 transitions. Second operand 10 states. [2020-10-23 20:22:52,254 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:22:53,357 WARN L193 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:22:53,730 WARN L193 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 20:22:55,186 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:22:55,553 WARN L193 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:22:55,982 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:22:56,551 WARN L193 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:22:56,953 WARN L193 SmtUtils]: Spent 370.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 20:22:57,317 WARN L193 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:22:58,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:22:58,218 INFO L93 Difference]: Finished difference Result 831 states and 933 transitions. [2020-10-23 20:22:58,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-23 20:22:58,218 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 218 [2020-10-23 20:22:58,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:22:58,223 INFO L225 Difference]: With dead ends: 831 [2020-10-23 20:22:58,223 INFO L226 Difference]: Without dead ends: 509 [2020-10-23 20:22:58,225 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2020-10-23 20:22:58,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 509 states. [2020-10-23 20:22:58,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 509 to 441. [2020-10-23 20:22:58,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 441 states. [2020-10-23 20:22:58,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 474 transitions. [2020-10-23 20:22:58,417 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 474 transitions. Word has length 218 [2020-10-23 20:22:58,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:22:58,418 INFO L481 AbstractCegarLoop]: Abstraction has 441 states and 474 transitions. [2020-10-23 20:22:58,418 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-23 20:22:58,418 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 474 transitions. [2020-10-23 20:22:58,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2020-10-23 20:22:58,422 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:22:58,422 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:22:58,422 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-23 20:22:58,423 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:22:58,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:22:58,423 INFO L82 PathProgramCache]: Analyzing trace with hash -507018607, now seen corresponding path program 1 times [2020-10-23 20:22:58,423 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:22:58,424 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [160396383] [2020-10-23 20:22:58,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:22:58,427 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:22:58,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:58,796 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:22:58,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:22:58,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:58,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 20:22:58,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:58,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 20:22:58,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:58,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 20:22:58,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:58,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 20:22:58,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:58,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 20:22:58,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:58,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-23 20:22:58,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:58,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:22:58,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:58,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-23 20:22:58,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:58,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:22:58,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:58,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:22:58,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:58,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:22:58,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:59,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 20:22:59,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:59,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 20:22:59,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:59,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 20:22:59,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:59,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 20:22:59,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:59,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-23 20:22:59,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:59,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2020-10-23 20:22:59,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:59,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-23 20:22:59,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:59,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:22:59,121 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [160396383] [2020-10-23 20:22:59,123 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:22:59,123 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-23 20:22:59,123 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287614006] [2020-10-23 20:22:59,124 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-23 20:22:59,124 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:22:59,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-23 20:22:59,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-23 20:22:59,125 INFO L87 Difference]: Start difference. First operand 441 states and 474 transitions. Second operand 10 states. [2020-10-23 20:23:00,766 WARN L193 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:23:01,151 WARN L193 SmtUtils]: Spent 357.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-23 20:23:01,554 WARN L193 SmtUtils]: Spent 377.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-10-23 20:23:01,964 WARN L193 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:23:02,365 WARN L193 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 20:23:02,738 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:23:04,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:23:04,283 INFO L93 Difference]: Finished difference Result 834 states and 941 transitions. [2020-10-23 20:23:04,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-23 20:23:04,284 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 241 [2020-10-23 20:23:04,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:23:04,289 INFO L225 Difference]: With dead ends: 834 [2020-10-23 20:23:04,289 INFO L226 Difference]: Without dead ends: 513 [2020-10-23 20:23:04,290 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2020-10-23 20:23:04,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 513 states. [2020-10-23 20:23:04,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 513 to 449. [2020-10-23 20:23:04,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 449 states. [2020-10-23 20:23:04,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 482 transitions. [2020-10-23 20:23:04,517 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 482 transitions. Word has length 241 [2020-10-23 20:23:04,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:23:04,517 INFO L481 AbstractCegarLoop]: Abstraction has 449 states and 482 transitions. [2020-10-23 20:23:04,518 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-23 20:23:04,518 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 482 transitions. [2020-10-23 20:23:04,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2020-10-23 20:23:04,522 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:23:04,522 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:23:04,522 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-23 20:23:04,522 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:23:04,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:23:04,523 INFO L82 PathProgramCache]: Analyzing trace with hash -1962531279, now seen corresponding path program 1 times [2020-10-23 20:23:04,523 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:23:04,524 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1979714722] [2020-10-23 20:23:04,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:23:04,527 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:23:04,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:04,919 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:23:04,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:23:04,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:04,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 20:23:04,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:04,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 20:23:04,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:04,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 20:23:04,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:04,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 20:23:04,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:05,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 20:23:05,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:05,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-23 20:23:05,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:05,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:23:05,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:05,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-23 20:23:05,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:05,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:23:05,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:05,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:23:05,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:05,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:23:05,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:05,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 20:23:05,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:05,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 20:23:05,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:05,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 20:23:05,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:05,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 20:23:05,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:05,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-23 20:23:05,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:05,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2020-10-23 20:23:05,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:05,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-23 20:23:05,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:05,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:23:05,226 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1979714722] [2020-10-23 20:23:05,226 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:23:05,226 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-23 20:23:05,226 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395930766] [2020-10-23 20:23:05,227 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-23 20:23:05,227 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:23:05,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-23 20:23:05,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-10-23 20:23:05,228 INFO L87 Difference]: Start difference. First operand 449 states and 482 transitions. Second operand 13 states. [2020-10-23 20:23:05,978 WARN L193 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:23:06,382 WARN L193 SmtUtils]: Spent 378.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-23 20:23:06,804 WARN L193 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:23:07,185 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 20:23:07,547 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:23:08,782 WARN L193 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:23:09,181 WARN L193 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 20:23:09,589 WARN L193 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:23:09,993 WARN L193 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 20:23:10,381 WARN L193 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:23:12,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:23:12,243 INFO L93 Difference]: Finished difference Result 851 states and 959 transitions. [2020-10-23 20:23:12,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-23 20:23:12,244 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 241 [2020-10-23 20:23:12,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:23:12,248 INFO L225 Difference]: With dead ends: 851 [2020-10-23 20:23:12,249 INFO L226 Difference]: Without dead ends: 522 [2020-10-23 20:23:12,251 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=110, Invalid=442, Unknown=0, NotChecked=0, Total=552 [2020-10-23 20:23:12,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states. [2020-10-23 20:23:12,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 455. [2020-10-23 20:23:12,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 455 states. [2020-10-23 20:23:12,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 488 transitions. [2020-10-23 20:23:12,457 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 488 transitions. Word has length 241 [2020-10-23 20:23:12,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:23:12,458 INFO L481 AbstractCegarLoop]: Abstraction has 455 states and 488 transitions. [2020-10-23 20:23:12,458 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-23 20:23:12,458 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 488 transitions. [2020-10-23 20:23:12,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2020-10-23 20:23:12,464 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:23:12,465 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:23:12,465 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-23 20:23:12,465 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:23:12,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:23:12,466 INFO L82 PathProgramCache]: Analyzing trace with hash -289297900, now seen corresponding path program 1 times [2020-10-23 20:23:12,466 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:23:12,468 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [101925284] [2020-10-23 20:23:12,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:23:12,472 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:23:12,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:12,888 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:23:12,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:23:12,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:12,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 20:23:12,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:12,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 20:23:12,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:12,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 20:23:12,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:12,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 20:23:12,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:12,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 20:23:12,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:12,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-23 20:23:12,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:12,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:23:12,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:12,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-23 20:23:12,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:12,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:23:12,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:13,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:23:13,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:13,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:23:13,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:13,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 20:23:13,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:13,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 20:23:13,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:13,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 20:23:13,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:13,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 20:23:13,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:13,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-23 20:23:13,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:13,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2020-10-23 20:23:13,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:13,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-23 20:23:13,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:13,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:23:13,154 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [101925284] [2020-10-23 20:23:13,155 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:23:13,155 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-23 20:23:13,155 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171905320] [2020-10-23 20:23:13,156 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-23 20:23:13,156 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:23:13,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-23 20:23:13,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-23 20:23:13,157 INFO L87 Difference]: Start difference. First operand 455 states and 488 transitions. Second operand 7 states. [2020-10-23 20:23:13,793 WARN L193 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:23:14,580 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:23:17,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:23:17,684 INFO L93 Difference]: Finished difference Result 1113 states and 1279 transitions. [2020-10-23 20:23:17,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-23 20:23:17,685 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 241 [2020-10-23 20:23:17,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:23:17,690 INFO L225 Difference]: With dead ends: 1113 [2020-10-23 20:23:17,690 INFO L226 Difference]: Without dead ends: 778 [2020-10-23 20:23:17,692 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 47 SyntacticMatches, 4 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2020-10-23 20:23:17,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 778 states. [2020-10-23 20:23:18,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 778 to 708. [2020-10-23 20:23:18,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 708 states. [2020-10-23 20:23:18,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 708 states to 708 states and 780 transitions. [2020-10-23 20:23:18,026 INFO L78 Accepts]: Start accepts. Automaton has 708 states and 780 transitions. Word has length 241 [2020-10-23 20:23:18,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:23:18,026 INFO L481 AbstractCegarLoop]: Abstraction has 708 states and 780 transitions. [2020-10-23 20:23:18,026 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-23 20:23:18,027 INFO L276 IsEmpty]: Start isEmpty. Operand 708 states and 780 transitions. [2020-10-23 20:23:18,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2020-10-23 20:23:18,029 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:23:18,029 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:23:18,029 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-23 20:23:18,030 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 20:23:18,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:23:18,030 INFO L82 PathProgramCache]: Analyzing trace with hash -330684270, now seen corresponding path program 1 times [2020-10-23 20:23:18,030 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:23:18,031 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [44154835] [2020-10-23 20:23:18,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:23:18,034 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:23:18,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:18,510 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:23:18,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:23:18,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:18,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 20:23:18,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:18,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 20:23:18,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:18,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 20:23:18,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:18,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 20:23:18,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:18,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 20:23:18,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:18,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-23 20:23:18,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:18,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-23 20:23:18,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:18,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:23:18,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:18,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-10-23 20:23:18,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:18,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:23:18,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:18,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:23:18,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:18,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:23:18,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:18,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 20:23:18,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:18,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 20:23:18,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:18,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 20:23:18,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:18,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 20:23:18,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:18,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-23 20:23:18,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:18,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-10-23 20:23:18,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:18,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-10-23 20:23:18,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:18,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:23:18,841 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [44154835] [2020-10-23 20:23:18,842 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:23:18,842 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-23 20:23:18,842 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679192231] [2020-10-23 20:23:18,843 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-23 20:23:18,843 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:23:18,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-23 20:23:18,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-10-23 20:23:18,844 INFO L87 Difference]: Start difference. First operand 708 states and 780 transitions. Second operand 14 states. [2020-10-23 20:23:19,907 WARN L193 SmtUtils]: Spent 704.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 207 [2020-10-23 20:23:20,944 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:23:23,100 WARN L193 SmtUtils]: Spent 686.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 209 [2020-10-23 20:23:23,861 WARN L193 SmtUtils]: Spent 704.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 211 [2020-10-23 20:23:24,312 WARN L193 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:23:24,704 WARN L193 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 20:23:25,463 WARN L193 SmtUtils]: Spent 683.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 210 [2020-10-23 20:23:25,850 WARN L193 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:23:26,288 WARN L193 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 20:23:26,682 WARN L193 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:23:28,934 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:23:29,329 WARN L193 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:23:29,811 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:23:30,687 WARN L193 SmtUtils]: Spent 692.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 207 [2020-10-23 20:23:32,812 WARN L193 SmtUtils]: Spent 710.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 209 [2020-10-23 20:23:33,580 WARN L193 SmtUtils]: Spent 724.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 211 [2020-10-23 20:23:34,582 WARN L193 SmtUtils]: Spent 788.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 210 [2020-10-23 20:23:35,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:23:35,345 INFO L93 Difference]: Finished difference Result 1951 states and 2236 transitions. [2020-10-23 20:23:35,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-10-23 20:23:35,346 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 246 [2020-10-23 20:23:35,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:23:35,355 INFO L225 Difference]: With dead ends: 1951 [2020-10-23 20:23:35,355 INFO L226 Difference]: Without dead ends: 1471 [2020-10-23 20:23:35,358 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 643 ImplicationChecksByTransitivity, 10.0s TimeCoverageRelationStatistics Valid=510, Invalid=1940, Unknown=0, NotChecked=0, Total=2450 [2020-10-23 20:23:35,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1471 states. [2020-10-23 20:23:36,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1471 to 1289. [2020-10-23 20:23:36,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1289 states. [2020-10-23 20:23:36,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1289 states to 1289 states and 1409 transitions. [2020-10-23 20:23:36,089 INFO L78 Accepts]: Start accepts. Automaton has 1289 states and 1409 transitions. Word has length 246 [2020-10-23 20:23:36,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:23:36,090 INFO L481 AbstractCegarLoop]: Abstraction has 1289 states and 1409 transitions. [2020-10-23 20:23:36,090 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-23 20:23:36,090 INFO L276 IsEmpty]: Start isEmpty. Operand 1289 states and 1409 transitions. [2020-10-23 20:23:36,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2020-10-23 20:23:36,093 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:23:36,094 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:23:36,094 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-23 20:23:36,095 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 20:23:36,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:23:36,095 INFO L82 PathProgramCache]: Analyzing trace with hash 1788347278, now seen corresponding path program 1 times [2020-10-23 20:23:36,096 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:23:36,096 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1206892588] [2020-10-23 20:23:36,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:23:36,144 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.looppreprocessor.LoopPreprocessorFastUPR.preProcessLoop(LoopPreprocessorFastUPR.java:119) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.acceleratedInterpolationCore(AcceleratedInterpolation.java:266) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.(AcceleratedInterpolation.java:227) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModulePreferences.construct(IpTcStrategyModulePreferences.java:147) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:241) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:84) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:511) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:438) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:372) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:341) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:182) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:134) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2020-10-23 20:23:36,149 INFO L168 Benchmark]: Toolchain (without parser) took 65006.91 ms. Allocated memory was 151.0 MB in the beginning and 653.3 MB in the end (delta: 502.3 MB). Free memory was 126.6 MB in the beginning and 303.7 MB in the end (delta: -177.1 MB). Peak memory consumption was 325.6 MB. Max. memory is 8.0 GB. [2020-10-23 20:23:36,150 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 151.0 MB. Free memory was 125.3 MB in the beginning and 125.2 MB in the end (delta: 80.1 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 20:23:36,151 INFO L168 Benchmark]: CACSL2BoogieTranslator took 670.36 ms. Allocated memory is still 151.0 MB. Free memory was 125.9 MB in the beginning and 103.3 MB in the end (delta: 22.6 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. [2020-10-23 20:23:36,151 INFO L168 Benchmark]: Boogie Preprocessor took 157.74 ms. Allocated memory is still 151.0 MB. Free memory was 103.3 MB in the beginning and 131.3 MB in the end (delta: -28.0 MB). Peak memory consumption was 6.2 MB. Max. memory is 8.0 GB. [2020-10-23 20:23:36,152 INFO L168 Benchmark]: RCFGBuilder took 1500.68 ms. Allocated memory is still 151.0 MB. Free memory was 131.3 MB in the beginning and 81.3 MB in the end (delta: 50.0 MB). Peak memory consumption was 63.7 MB. Max. memory is 8.0 GB. [2020-10-23 20:23:36,153 INFO L168 Benchmark]: TraceAbstraction took 62661.87 ms. Allocated memory was 151.0 MB in the beginning and 653.3 MB in the end (delta: 502.3 MB). Free memory was 80.7 MB in the beginning and 303.7 MB in the end (delta: -222.9 MB). Peak memory consumption was 278.8 MB. Max. memory is 8.0 GB. [2020-10-23 20:23:36,156 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 151.0 MB. Free memory was 125.3 MB in the beginning and 125.2 MB in the end (delta: 80.1 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 670.36 ms. Allocated memory is still 151.0 MB. Free memory was 125.9 MB in the beginning and 103.3 MB in the end (delta: 22.6 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 157.74 ms. Allocated memory is still 151.0 MB. Free memory was 103.3 MB in the beginning and 131.3 MB in the end (delta: -28.0 MB). Peak memory consumption was 6.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1500.68 ms. Allocated memory is still 151.0 MB. Free memory was 131.3 MB in the beginning and 81.3 MB in the end (delta: 50.0 MB). Peak memory consumption was 63.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 62661.87 ms. Allocated memory was 151.0 MB in the beginning and 653.3 MB in the end (delta: 502.3 MB). Free memory was 80.7 MB in the beginning and 303.7 MB in the end (delta: -222.9 MB). Peak memory consumption was 278.8 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.looppreprocessor.LoopPreprocessorFastUPR.preProcessLoop(LoopPreprocessorFastUPR.java:119) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...