/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_product59.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 20:22:15,549 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 20:22:15,553 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 20:22:15,608 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 20:22:15,609 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 20:22:15,614 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 20:22:15,618 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 20:22:15,626 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 20:22:15,630 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 20:22:15,636 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 20:22:15,638 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 20:22:15,640 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 20:22:15,640 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 20:22:15,644 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 20:22:15,646 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 20:22:15,648 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 20:22:15,650 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 20:22:15,653 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 20:22:15,660 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 20:22:15,669 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 20:22:15,671 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 20:22:15,672 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 20:22:15,674 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 20:22:15,677 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 20:22:15,686 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-23 20:22:15,686 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-23 20:22:15,697 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-23 20:22:15,699 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-23 20:22:15,701 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-23 20:22:15,703 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-23 20:22:15,703 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-23 20:22:15,704 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-23 20:22:15,705 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-23 20:22:15,706 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-23 20:22:15,707 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-23 20:22:15,707 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-23 20:22:15,708 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-23 20:22:15,708 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-23 20:22:15,708 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 20:22:15,709 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 20:22:15,710 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 20:22:15,711 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 20:22:15,737 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 20:22:15,737 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 20:22:15,743 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 20:22:15,743 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 20:22:15,744 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 20:22:15,744 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 20:22:15,744 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 20:22:15,744 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 20:22:15,744 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 20:22:15,745 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 20:22:15,746 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 20:22:15,746 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 20:22:15,746 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 20:22:15,747 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 20:22:15,747 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 20:22:15,747 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-23 20:22:15,748 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 20:22:15,748 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 20:22:15,748 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 20:22:15,748 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 20:22:15,749 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-23 20:22:15,749 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 20:22:15,749 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 20:22:16,184 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 20:22:16,211 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 20:22:16,214 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 20:22:16,216 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 20:22:16,216 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 20:22:16,217 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product59.cil.c [2020-10-23 20:22:16,307 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da31b7e53/eb94c7c2e61b4d34a9d774d99d234414/FLAGe51133ff8 [2020-10-23 20:22:17,097 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 20:22:17,098 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec5_product59.cil.c [2020-10-23 20:22:17,115 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da31b7e53/eb94c7c2e61b4d34a9d774d99d234414/FLAGe51133ff8 [2020-10-23 20:22:17,329 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da31b7e53/eb94c7c2e61b4d34a9d774d99d234414 [2020-10-23 20:22:17,333 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 20:22:17,341 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 20:22:17,343 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 20:22:17,343 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 20:22:17,349 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 20:22:17,350 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:22:17" (1/1) ... [2020-10-23 20:22:17,354 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@526fbd29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:22:17, skipping insertion in model container [2020-10-23 20:22:17,354 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:22:17" (1/1) ... [2020-10-23 20:22:17,363 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 20:22:17,439 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 20:22:17,819 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 20:22:17,835 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 20:22:17,941 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 20:22:17,981 INFO L208 MainTranslator]: Completed translation [2020-10-23 20:22:17,982 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:22:17 WrapperNode [2020-10-23 20:22:17,982 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 20:22:17,983 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 20:22:17,983 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 20:22:17,983 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 20:22:17,997 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:22:17" (1/1) ... [2020-10-23 20:22:17,998 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:22:17" (1/1) ... [2020-10-23 20:22:18,042 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:22:17" (1/1) ... [2020-10-23 20:22:18,042 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:22:17" (1/1) ... [2020-10-23 20:22:18,073 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:22:17" (1/1) ... [2020-10-23 20:22:18,083 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:22:17" (1/1) ... [2020-10-23 20:22:18,088 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:22:17" (1/1) ... [2020-10-23 20:22:18,096 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 20:22:18,097 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 20:22:18,097 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 20:22:18,097 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 20:22:18,098 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:22:17" (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 20:22:18,177 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 20:22:18,178 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 20:22:18,178 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-10-23 20:22:18,178 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 20:22:18,178 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-10-23 20:22:18,178 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-10-23 20:22:18,179 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-10-23 20:22:18,179 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-10-23 20:22:18,179 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-10-23 20:22:18,179 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-10-23 20:22:18,179 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-10-23 20:22:18,179 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-10-23 20:22:18,179 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-10-23 20:22:18,180 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-10-23 20:22:18,180 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-10-23 20:22:18,180 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-10-23 20:22:18,180 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-10-23 20:22:18,180 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2020-10-23 20:22:18,180 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-10-23 20:22:18,181 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-10-23 20:22:18,181 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-10-23 20:22:18,181 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-10-23 20:22:18,181 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-10-23 20:22:18,181 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-10-23 20:22:18,181 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-10-23 20:22:18,182 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-10-23 20:22:18,182 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-10-23 20:22:18,182 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-10-23 20:22:18,182 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-10-23 20:22:18,182 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-10-23 20:22:18,182 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-10-23 20:22:18,183 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-10-23 20:22:18,183 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-10-23 20:22:18,183 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2020-10-23 20:22:18,183 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2020-10-23 20:22:18,183 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2020-10-23 20:22:18,183 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-10-23 20:22:18,184 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-10-23 20:22:18,184 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-10-23 20:22:18,184 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-10-23 20:22:18,184 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 20:22:18,184 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-10-23 20:22:18,184 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-10-23 20:22:18,184 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-10-23 20:22:18,185 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-10-23 20:22:18,185 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 20:22:18,185 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 20:22:18,185 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 20:22:18,185 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 20:22:18,185 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-23 20:22:18,185 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-10-23 20:22:18,186 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-10-23 20:22:18,186 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-10-23 20:22:18,186 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-10-23 20:22:18,186 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-10-23 20:22:18,186 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-10-23 20:22:18,186 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-10-23 20:22:18,186 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-10-23 20:22:18,187 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-10-23 20:22:18,187 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-10-23 20:22:18,187 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-10-23 20:22:18,187 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-10-23 20:22:18,187 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-10-23 20:22:18,188 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-10-23 20:22:18,188 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-10-23 20:22:18,188 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-10-23 20:22:18,188 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-10-23 20:22:18,188 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2020-10-23 20:22:18,188 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2020-10-23 20:22:18,188 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-10-23 20:22:18,189 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-10-23 20:22:18,189 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-10-23 20:22:18,189 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-10-23 20:22:18,189 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-10-23 20:22:18,189 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2020-10-23 20:22:18,189 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-10-23 20:22:18,190 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-23 20:22:18,190 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-23 20:22:18,190 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-10-23 20:22:18,190 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-23 20:22:18,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-23 20:22:18,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 20:22:18,190 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-23 20:22:18,191 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-10-23 20:22:18,191 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 20:22:18,191 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-10-23 20:22:18,191 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-10-23 20:22:18,191 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 20:22:18,191 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-10-23 20:22:18,191 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-10-23 20:22:18,192 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-10-23 20:22:18,192 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-10-23 20:22:18,192 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2020-10-23 20:22:18,192 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-10-23 20:22:18,192 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-10-23 20:22:18,192 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-10-23 20:22:18,192 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-10-23 20:22:18,193 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-10-23 20:22:18,193 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-10-23 20:22:18,193 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 20:22:18,193 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-10-23 20:22:18,193 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 20:22:18,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 20:22:18,193 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 20:22:19,626 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 20:22:19,626 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-23 20:22:19,629 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:22:19 BoogieIcfgContainer [2020-10-23 20:22:19,629 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 20:22:19,631 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 20:22:19,631 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 20:22:19,635 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 20:22:19,635 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 08:22:17" (1/3) ... [2020-10-23 20:22:19,636 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6402ecac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:22:19, skipping insertion in model container [2020-10-23 20:22:19,636 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:22:17" (2/3) ... [2020-10-23 20:22:19,637 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6402ecac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:22:19, skipping insertion in model container [2020-10-23 20:22:19,637 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:22:19" (3/3) ... [2020-10-23 20:22:19,641 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product59.cil.c [2020-10-23 20:22:19,654 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-23 20:22:19,660 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-10-23 20:22:19,680 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-23 20:22:19,707 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 20:22:19,707 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 20:22:19,707 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-10-23 20:22:19,707 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 20:22:19,707 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 20:22:19,707 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 20:22:19,707 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 20:22:19,707 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 20:22:19,731 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-10-23 20:22:19,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-10-23 20:22:19,753 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:22:19,754 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 20:22:19,755 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 20:22:19,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:22:19,761 INFO L82 PathProgramCache]: Analyzing trace with hash -1276079513, now seen corresponding path program 1 times [2020-10-23 20:22:19,771 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:22:19,772 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1563000393] [2020-10-23 20:22:19,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:22:19,853 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:22:20,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:20,836 WARN L193 SmtUtils]: Spent 515.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:22:20,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:22:20,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:20,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 20:22:20,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:20,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 20:22:20,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:20,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 20:22:20,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:20,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 20:22:20,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:20,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 20:22:20,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:20,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-23 20:22:20,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:20,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:22:20,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:20,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-10-23 20:22:21,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:21,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-10-23 20:22:21,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:21,054 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 20:22:21,057 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1563000393] [2020-10-23 20:22:21,059 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:22:21,060 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-23 20:22:21,060 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673315283] [2020-10-23 20:22:21,066 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-23 20:22:21,067 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:22:21,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-23 20:22:21,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-23 20:22:21,084 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 4 states. [2020-10-23 20:22:22,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:22:22,763 INFO L93 Difference]: Finished difference Result 578 states and 673 transitions. [2020-10-23 20:22:22,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-23 20:22:22,765 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 166 [2020-10-23 20:22:22,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:22:22,800 INFO L225 Difference]: With dead ends: 578 [2020-10-23 20:22:22,800 INFO L226 Difference]: Without dead ends: 357 [2020-10-23 20:22:22,813 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-23 20:22:22,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2020-10-23 20:22:23,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 308. [2020-10-23 20:22:23,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 308 states. [2020-10-23 20:22:23,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 335 transitions. [2020-10-23 20:22:23,007 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 335 transitions. Word has length 166 [2020-10-23 20:22:23,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:22:23,008 INFO L481 AbstractCegarLoop]: Abstraction has 308 states and 335 transitions. [2020-10-23 20:22:23,008 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-23 20:22:23,009 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 335 transitions. [2020-10-23 20:22:23,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-10-23 20:22:23,013 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:22:23,014 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 20:22:23,014 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 20:22:23,014 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 20:22:23,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:22:23,015 INFO L82 PathProgramCache]: Analyzing trace with hash -2127781929, now seen corresponding path program 1 times [2020-10-23 20:22:23,015 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:22:23,016 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [885784293] [2020-10-23 20:22:23,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:22:23,021 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:22:23,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:23,531 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:22:23,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:22:23,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:23,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 20:22:23,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:23,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 20:22:23,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:23,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 20:22:23,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:23,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 20:22:23,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:23,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 20:22:23,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:23,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-23 20:22:23,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:23,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:22:23,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:23,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-10-23 20:22:23,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:23,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-23 20:22:23,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:23,665 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 20:22:23,666 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [885784293] [2020-10-23 20:22:23,666 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:22:23,666 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-23 20:22:23,666 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784545215] [2020-10-23 20:22:23,669 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-23 20:22:23,671 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:22:23,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-23 20:22:23,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-23 20:22:23,678 INFO L87 Difference]: Start difference. First operand 308 states and 335 transitions. Second operand 5 states. [2020-10-23 20:22:24,433 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:22:25,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:22:25,768 INFO L93 Difference]: Finished difference Result 498 states and 557 transitions. [2020-10-23 20:22:25,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-23 20:22:25,769 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 167 [2020-10-23 20:22:25,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:22:25,774 INFO L225 Difference]: With dead ends: 498 [2020-10-23 20:22:25,774 INFO L226 Difference]: Without dead ends: 346 [2020-10-23 20:22:25,777 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-23 20:22:25,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2020-10-23 20:22:25,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 298. [2020-10-23 20:22:25,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-10-23 20:22:25,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 322 transitions. [2020-10-23 20:22:25,933 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 322 transitions. Word has length 167 [2020-10-23 20:22:25,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:22:25,936 INFO L481 AbstractCegarLoop]: Abstraction has 298 states and 322 transitions. [2020-10-23 20:22:25,936 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-23 20:22:25,936 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 322 transitions. [2020-10-23 20:22:25,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-10-23 20:22:25,944 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:22:25,945 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 20:22:25,945 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 20:22:25,945 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 20:22:25,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:22:25,946 INFO L82 PathProgramCache]: Analyzing trace with hash 892243845, now seen corresponding path program 1 times [2020-10-23 20:22:25,946 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:22:25,947 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1003986054] [2020-10-23 20:22:25,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:22:25,951 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:22:26,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:26,412 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:22:26,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:22:26,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:26,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 20:22:26,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:26,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 20:22:26,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:26,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 20:22:26,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:26,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 20:22:26,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:26,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 20:22:26,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:26,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-23 20:22:26,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:26,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:22:26,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:26,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-10-23 20:22:26,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:26,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2020-10-23 20:22:26,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:26,706 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 20:22:26,708 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1003986054] [2020-10-23 20:22:26,709 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:22:26,709 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-23 20:22:26,709 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892435613] [2020-10-23 20:22:26,711 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-23 20:22:26,711 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:22:26,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-23 20:22:26,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-23 20:22:26,713 INFO L87 Difference]: Start difference. First operand 298 states and 322 transitions. Second operand 10 states. [2020-10-23 20:22:27,284 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:22:27,668 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 20:22:27,995 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-23 20:22:28,293 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:22:28,596 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 20:22:28,892 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:22:30,084 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:22:32,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:22:32,667 INFO L93 Difference]: Finished difference Result 800 states and 911 transitions. [2020-10-23 20:22:32,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-23 20:22:32,671 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 176 [2020-10-23 20:22:32,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:22:32,679 INFO L225 Difference]: With dead ends: 800 [2020-10-23 20:22:32,680 INFO L226 Difference]: Without dead ends: 622 [2020-10-23 20:22:32,682 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2020-10-23 20:22:32,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 622 states. [2020-10-23 20:22:32,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 622 to 547. [2020-10-23 20:22:32,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 547 states. [2020-10-23 20:22:32,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 611 transitions. [2020-10-23 20:22:32,966 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 611 transitions. Word has length 176 [2020-10-23 20:22:32,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:22:32,967 INFO L481 AbstractCegarLoop]: Abstraction has 547 states and 611 transitions. [2020-10-23 20:22:32,967 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-23 20:22:32,967 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 611 transitions. [2020-10-23 20:22:32,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-10-23 20:22:32,971 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:22:32,971 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] [2020-10-23 20:22:32,972 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-23 20:22:32,972 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 20:22:32,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:22:32,973 INFO L82 PathProgramCache]: Analyzing trace with hash -1289349210, now seen corresponding path program 1 times [2020-10-23 20:22:32,973 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:22:32,975 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [600938982] [2020-10-23 20:22:32,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:22:32,982 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:22:33,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:33,383 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:22:33,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:22:33,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:33,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 20:22:33,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:33,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 20:22:33,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:33,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 20:22:33,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:33,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 20:22:33,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:33,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 20:22:33,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:33,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-10-23 20:22:33,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:33,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-10-23 20:22:33,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:33,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:22:33,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:33,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2020-10-23 20:22:33,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:33,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-10-23 20:22:33,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:33,607 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 20:22:33,608 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [600938982] [2020-10-23 20:22:33,608 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:22:33,608 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-23 20:22:33,608 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75252582] [2020-10-23 20:22:33,609 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-23 20:22:33,609 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:22:33,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-23 20:22:33,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-23 20:22:33,610 INFO L87 Difference]: Start difference. First operand 547 states and 611 transitions. Second operand 10 states. [2020-10-23 20:22:34,257 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:22:35,094 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:22:35,466 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 20:22:36,927 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:22:37,250 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 20:22:37,554 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:22:37,950 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:22:38,246 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:22:38,604 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:22:39,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:22:39,626 INFO L93 Difference]: Finished difference Result 1235 states and 1464 transitions. [2020-10-23 20:22:39,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-23 20:22:39,627 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 185 [2020-10-23 20:22:39,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:22:39,635 INFO L225 Difference]: With dead ends: 1235 [2020-10-23 20:22:39,635 INFO L226 Difference]: Without dead ends: 808 [2020-10-23 20:22:39,638 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2020-10-23 20:22:39,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 808 states. [2020-10-23 20:22:40,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 808 to 719. [2020-10-23 20:22:40,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 719 states. [2020-10-23 20:22:40,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 719 states to 719 states and 807 transitions. [2020-10-23 20:22:40,039 INFO L78 Accepts]: Start accepts. Automaton has 719 states and 807 transitions. Word has length 185 [2020-10-23 20:22:40,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:22:40,040 INFO L481 AbstractCegarLoop]: Abstraction has 719 states and 807 transitions. [2020-10-23 20:22:40,040 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-23 20:22:40,040 INFO L276 IsEmpty]: Start isEmpty. Operand 719 states and 807 transitions. [2020-10-23 20:22:40,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2020-10-23 20:22:40,045 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:22:40,045 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] [2020-10-23 20:22:40,045 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-23 20:22:40,046 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 20:22:40,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:22:40,046 INFO L82 PathProgramCache]: Analyzing trace with hash 958985721, now seen corresponding path program 1 times [2020-10-23 20:22:40,047 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:22:40,047 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1029191170] [2020-10-23 20:22:40,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:22:40,051 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:22:40,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:40,367 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:22:40,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:22:40,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:40,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 20:22:40,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:40,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 20:22:40,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:40,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 20:22:40,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:40,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 20:22:40,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:40,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 20:22:40,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:40,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-23 20:22:40,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:40,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:22:40,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:40,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-23 20:22:40,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:40,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:22:40,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:40,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:22:40,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:40,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 20:22:40,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:40,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 20:22:40,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:40,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 20:22:40,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:40,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 20:22:40,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:40,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-23 20:22:40,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:40,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2020-10-23 20:22:40,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:40,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-10-23 20:22:40,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:40,658 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 20:22:40,659 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1029191170] [2020-10-23 20:22:40,659 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:22:40,659 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-23 20:22:40,659 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497717991] [2020-10-23 20:22:40,660 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-23 20:22:40,660 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:22:40,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-23 20:22:40,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-23 20:22:40,661 INFO L87 Difference]: Start difference. First operand 719 states and 807 transitions. Second operand 10 states. [2020-10-23 20:22:42,302 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:22:42,643 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-23 20:22:42,984 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-10-23 20:22:43,313 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:22:43,630 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 20:22:43,936 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:22:45,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:22:45,252 INFO L93 Difference]: Finished difference Result 1457 states and 1725 transitions. [2020-10-23 20:22:45,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-23 20:22:45,253 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 236 [2020-10-23 20:22:45,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:22:45,259 INFO L225 Difference]: With dead ends: 1457 [2020-10-23 20:22:45,259 INFO L226 Difference]: Without dead ends: 858 [2020-10-23 20:22:45,262 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2020-10-23 20:22:45,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 858 states. [2020-10-23 20:22:45,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 858 to 738. [2020-10-23 20:22:45,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 738 states. [2020-10-23 20:22:45,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 738 states to 738 states and 827 transitions. [2020-10-23 20:22:45,569 INFO L78 Accepts]: Start accepts. Automaton has 738 states and 827 transitions. Word has length 236 [2020-10-23 20:22:45,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:22:45,570 INFO L481 AbstractCegarLoop]: Abstraction has 738 states and 827 transitions. [2020-10-23 20:22:45,570 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-23 20:22:45,570 INFO L276 IsEmpty]: Start isEmpty. Operand 738 states and 827 transitions. [2020-10-23 20:22:45,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2020-10-23 20:22:45,574 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:22:45,575 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] [2020-10-23 20:22:45,575 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-23 20:22:45,575 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 20:22:45,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:22:45,576 INFO L82 PathProgramCache]: Analyzing trace with hash 184287641, now seen corresponding path program 1 times [2020-10-23 20:22:45,576 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:22:45,577 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1151928407] [2020-10-23 20:22:45,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:22:45,580 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:22:45,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:45,919 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:22:45,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:22:45,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:45,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 20:22:45,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:45,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 20:22:45,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:45,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 20:22:45,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:45,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 20:22:45,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:46,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 20:22:46,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:46,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-23 20:22:46,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:46,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:22:46,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:46,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-23 20:22:46,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:46,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:22:46,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:46,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:22:46,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:46,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 20:22:46,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:46,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 20:22:46,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:46,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 20:22:46,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:46,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 20:22:46,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:46,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-23 20:22:46,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:46,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2020-10-23 20:22:46,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:46,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-10-23 20:22:46,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:46,212 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 20:22:46,213 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1151928407] [2020-10-23 20:22:46,213 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:22:46,213 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-23 20:22:46,213 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749099695] [2020-10-23 20:22:46,214 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-23 20:22:46,214 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:22:46,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-23 20:22:46,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-10-23 20:22:46,215 INFO L87 Difference]: Start difference. First operand 738 states and 827 transitions. Second operand 13 states. [2020-10-23 20:22:46,868 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:22:47,182 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-23 20:22:47,499 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:22:47,793 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 20:22:48,089 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:22:49,164 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:22:49,499 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 20:22:49,826 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:22:50,164 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 20:22:50,448 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:22:52,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:22:52,026 INFO L93 Difference]: Finished difference Result 1494 states and 1763 transitions. [2020-10-23 20:22:52,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-23 20:22:52,027 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 236 [2020-10-23 20:22:52,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:22:52,033 INFO L225 Difference]: With dead ends: 1494 [2020-10-23 20:22:52,033 INFO L226 Difference]: Without dead ends: 876 [2020-10-23 20:22:52,036 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=110, Invalid=442, Unknown=0, NotChecked=0, Total=552 [2020-10-23 20:22:52,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 876 states. [2020-10-23 20:22:52,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 876 to 750. [2020-10-23 20:22:52,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 750 states. [2020-10-23 20:22:52,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 750 states to 750 states and 839 transitions. [2020-10-23 20:22:52,375 INFO L78 Accepts]: Start accepts. Automaton has 750 states and 839 transitions. Word has length 236 [2020-10-23 20:22:52,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:22:52,376 INFO L481 AbstractCegarLoop]: Abstraction has 750 states and 839 transitions. [2020-10-23 20:22:52,376 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-23 20:22:52,376 INFO L276 IsEmpty]: Start isEmpty. Operand 750 states and 839 transitions. [2020-10-23 20:22:52,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2020-10-23 20:22:52,380 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:22:52,380 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] [2020-10-23 20:22:52,381 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-23 20:22:52,381 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 20:22:52,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:22:52,381 INFO L82 PathProgramCache]: Analyzing trace with hash 1249714748, now seen corresponding path program 1 times [2020-10-23 20:22:52,382 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:22:52,382 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [852354710] [2020-10-23 20:22:52,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:22:52,385 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:22:52,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:52,703 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:22:52,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:22:52,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:52,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 20:22:52,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:52,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 20:22:52,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:52,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 20:22:52,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:52,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 20:22:52,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:52,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 20:22:52,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:52,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-23 20:22:52,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:52,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:22:52,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:52,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-23 20:22:52,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:52,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:22:52,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:52,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:22:52,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:52,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 20:22:52,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:52,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 20:22:52,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:52,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 20:22:52,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:52,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 20:22:52,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:52,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-23 20:22:52,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:52,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2020-10-23 20:22:52,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:52,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-10-23 20:22:52,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:52,965 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 20:22:52,966 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [852354710] [2020-10-23 20:22:52,966 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:22:52,966 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-23 20:22:52,966 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896448795] [2020-10-23 20:22:52,967 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-23 20:22:52,967 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:22:52,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-23 20:22:52,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-23 20:22:52,968 INFO L87 Difference]: Start difference. First operand 750 states and 839 transitions. Second operand 7 states. [2020-10-23 20:22:53,550 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:22:54,214 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:22:57,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:22:57,063 INFO L93 Difference]: Finished difference Result 2181 states and 2598 transitions. [2020-10-23 20:22:57,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-23 20:22:57,063 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 236 [2020-10-23 20:22:57,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:22:57,073 INFO L225 Difference]: With dead ends: 2181 [2020-10-23 20:22:57,073 INFO L226 Difference]: Without dead ends: 1551 [2020-10-23 20:22:57,077 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 45 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2020-10-23 20:22:57,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1551 states. [2020-10-23 20:22:57,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1551 to 1426. [2020-10-23 20:22:57,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1426 states. [2020-10-23 20:22:57,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1426 states to 1426 states and 1624 transitions. [2020-10-23 20:22:57,620 INFO L78 Accepts]: Start accepts. Automaton has 1426 states and 1624 transitions. Word has length 236 [2020-10-23 20:22:57,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:22:57,621 INFO L481 AbstractCegarLoop]: Abstraction has 1426 states and 1624 transitions. [2020-10-23 20:22:57,621 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-23 20:22:57,621 INFO L276 IsEmpty]: Start isEmpty. Operand 1426 states and 1624 transitions. [2020-10-23 20:22:57,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2020-10-23 20:22:57,626 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:22:57,627 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 20:22:57,627 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-23 20:22:57,627 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 20:22:57,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:22:57,628 INFO L82 PathProgramCache]: Analyzing trace with hash 1056680644, now seen corresponding path program 1 times [2020-10-23 20:22:57,628 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:22:57,628 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1738549822] [2020-10-23 20:22:57,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:22:57,632 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:22:57,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:58,025 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:22:58,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:22:58,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:58,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 20:22:58,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:58,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 20:22:58,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:58,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 20:22:58,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:58,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 20:22:58,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:58,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 20:22:58,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:58,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-23 20:22:58,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:58,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-23 20:22:58,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:58,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:22:58,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:58,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-10-23 20:22:58,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:58,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:22:58,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:58,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:22:58,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:58,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 20:22:58,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:58,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 20:22:58,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:58,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 20:22:58,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:58,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 20:22:58,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:58,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-23 20:22:58,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:58,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2020-10-23 20:22:58,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:58,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-23 20:22:58,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:58,404 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 20:22:58,404 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1738549822] [2020-10-23 20:22:58,405 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:22:58,405 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-23 20:22:58,405 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745877652] [2020-10-23 20:22:58,406 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-23 20:22:58,406 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:22:58,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-23 20:22:58,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-10-23 20:22:58,407 INFO L87 Difference]: Start difference. First operand 1426 states and 1624 transitions. Second operand 14 states. [2020-10-23 20:22:59,267 WARN L193 SmtUtils]: Spent 511.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 207 [2020-10-23 20:23:00,178 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:23:01,472 WARN L193 SmtUtils]: Spent 541.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 209 [2020-10-23 20:23:02,090 WARN L193 SmtUtils]: Spent 566.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 211 [2020-10-23 20:23:02,486 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:23:02,793 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 20:23:03,392 WARN L193 SmtUtils]: Spent 514.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 210 [2020-10-23 20:23:03,686 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:23:04,065 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 20:23:04,371 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:23:07,150 WARN L193 SmtUtils]: Spent 516.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 207 [2020-10-23 20:23:07,949 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:23:08,252 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:23:08,596 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:23:09,793 WARN L193 SmtUtils]: Spent 516.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 209 [2020-10-23 20:23:10,411 WARN L193 SmtUtils]: Spent 582.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 211 [2020-10-23 20:23:10,993 WARN L193 SmtUtils]: Spent 505.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 210 [2020-10-23 20:23:11,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:23:11,834 INFO L93 Difference]: Finished difference Result 4096 states and 4898 transitions. [2020-10-23 20:23:11,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-10-23 20:23:11,835 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 241 [2020-10-23 20:23:11,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:23:11,854 INFO L225 Difference]: With dead ends: 4096 [2020-10-23 20:23:11,854 INFO L226 Difference]: Without dead ends: 3067 [2020-10-23 20:23:11,861 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 671 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=510, Invalid=1940, Unknown=0, NotChecked=0, Total=2450 [2020-10-23 20:23:11,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3067 states. [2020-10-23 20:23:13,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3067 to 2631. [2020-10-23 20:23:13,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2631 states. [2020-10-23 20:23:13,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2631 states to 2631 states and 2977 transitions. [2020-10-23 20:23:13,110 INFO L78 Accepts]: Start accepts. Automaton has 2631 states and 2977 transitions. Word has length 241 [2020-10-23 20:23:13,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:23:13,111 INFO L481 AbstractCegarLoop]: Abstraction has 2631 states and 2977 transitions. [2020-10-23 20:23:13,111 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-23 20:23:13,111 INFO L276 IsEmpty]: Start isEmpty. Operand 2631 states and 2977 transitions. [2020-10-23 20:23:13,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2020-10-23 20:23:13,119 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:23:13,120 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:23:13,120 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-23 20:23:13,121 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 20:23:13,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:23:13,121 INFO L82 PathProgramCache]: Analyzing trace with hash 1530029369, now seen corresponding path program 1 times [2020-10-23 20:23:13,121 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:23:13,122 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [250199395] [2020-10-23 20:23:13,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:23:13,453 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 88 [2020-10-23 20:23:13,918 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 92 [2020-10-23 20:23:14,417 WARN L193 SmtUtils]: Spent 389.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 93 [2020-10-23 20:23:14,541 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2020-10-23 20:23:14,860 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 93 [2020-10-23 20:23:14,973 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2020-10-23 20:23:15,308 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 91 [2020-10-23 20:23:15,417 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2020-10-23 20:23:15,708 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 85 [2020-10-23 20:23:16,120 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 88 [2020-10-23 20:23:16,521 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 85 [2020-10-23 20:23:16,987 WARN L193 SmtUtils]: Spent 361.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 94 [2020-10-23 20:23:17,093 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2020-10-23 20:23:17,388 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 88 [2020-10-23 20:23:17,821 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 94 [2020-10-23 20:23:17,926 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2020-10-23 20:23:18,224 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 84 [2020-10-23 20:23:18,608 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 85 [2020-10-23 20:23:18,980 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 84 [2020-10-23 20:23:20,238 WARN L193 SmtUtils]: Spent 839.00 ms on a formula simplification. DAG size of input: 271 DAG size of output: 269 [2020-10-23 20:23:21,286 WARN L193 SmtUtils]: Spent 850.00 ms on a formula simplification. DAG size of input: 271 DAG size of output: 269 [2020-10-23 20:23:22,290 WARN L193 SmtUtils]: Spent 832.00 ms on a formula simplification. DAG size of input: 271 DAG size of output: 269 [2020-10-23 20:23:23,266 WARN L193 SmtUtils]: Spent 805.00 ms on a formula simplification. DAG size of input: 271 DAG size of output: 269 [2020-10-23 20:23:23,274 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:23:23,969 WARN L193 SmtUtils]: Spent 667.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 212 [2020-10-23 20:23:24,657 WARN L193 SmtUtils]: Spent 656.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 212 [2020-10-23 20:23:25,373 WARN L193 SmtUtils]: Spent 691.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 212 [2020-10-23 20:23:26,046 WARN L193 SmtUtils]: Spent 638.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 212 [2020-10-23 20:23:26,715 WARN L193 SmtUtils]: Spent 640.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 212 [2020-10-23 20:23:27,406 WARN L193 SmtUtils]: Spent 664.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 212 [2020-10-23 20:23:28,105 WARN L193 SmtUtils]: Spent 674.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 212 [2020-10-23 20:23:28,778 WARN L193 SmtUtils]: Spent 645.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 212 [2020-10-23 20:23:28,784 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:23:29,428 WARN L193 SmtUtils]: Spent 625.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 207 [2020-10-23 20:23:30,111 WARN L193 SmtUtils]: Spent 651.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 207 [2020-10-23 20:23:30,801 WARN L193 SmtUtils]: Spent 665.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 207 [2020-10-23 20:23:31,497 WARN L193 SmtUtils]: Spent 668.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 207 [2020-10-23 20:23:32,186 WARN L193 SmtUtils]: Spent 657.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 208 [2020-10-23 20:23:32,827 WARN L193 SmtUtils]: Spent 610.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 208 [2020-10-23 20:23:33,525 WARN L193 SmtUtils]: Spent 665.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 208 [2020-10-23 20:23:34,184 WARN L193 SmtUtils]: Spent 637.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 208 [2020-10-23 20:23:34,188 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:23:34,846 WARN L193 SmtUtils]: Spent 625.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 206 [2020-10-23 20:23:35,536 WARN L193 SmtUtils]: Spent 667.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 205 [2020-10-23 20:23:36,178 WARN L193 SmtUtils]: Spent 622.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 206 [2020-10-23 20:23:36,831 WARN L193 SmtUtils]: Spent 623.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 206 [2020-10-23 20:23:37,475 WARN L193 SmtUtils]: Spent 613.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 206 [2020-10-23 20:23:38,150 WARN L193 SmtUtils]: Spent 656.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 205 [2020-10-23 20:23:38,814 WARN L193 SmtUtils]: Spent 629.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 205 [2020-10-23 20:23:39,462 WARN L193 SmtUtils]: Spent 617.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 205 [2020-10-23 20:23:39,466 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:23:40,116 WARN L193 SmtUtils]: Spent 632.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 208 [2020-10-23 20:23:40,810 WARN L193 SmtUtils]: Spent 669.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 209 [2020-10-23 20:23:41,494 WARN L193 SmtUtils]: Spent 664.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 209 [2020-10-23 20:23:42,165 WARN L193 SmtUtils]: Spent 649.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 208 [2020-10-23 20:23:42,836 WARN L193 SmtUtils]: Spent 639.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 208 [2020-10-23 20:23:43,523 WARN L193 SmtUtils]: Spent 657.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 209 [2020-10-23 20:23:44,174 WARN L193 SmtUtils]: Spent 617.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 208 [2020-10-23 20:23:44,845 WARN L193 SmtUtils]: Spent 649.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 209 [2020-10-23 20:23:44,847 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:23:45,816 WARN L193 SmtUtils]: Spent 843.00 ms on a formula simplification. DAG size of input: 274 DAG size of output: 273 [2020-10-23 20:23:46,782 WARN L193 SmtUtils]: Spent 817.00 ms on a formula simplification. DAG size of input: 274 DAG size of output: 273 [2020-10-23 20:23:47,684 WARN L193 SmtUtils]: Spent 794.00 ms on a formula simplification. DAG size of input: 274 DAG size of output: 273 [2020-10-23 20:23:48,662 WARN L193 SmtUtils]: Spent 854.00 ms on a formula simplification. DAG size of input: 274 DAG size of output: 273 [2020-10-23 20:23:48,671 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:23:49,644 WARN L193 SmtUtils]: Spent 863.00 ms on a formula simplification. DAG size of input: 275 DAG size of output: 273 [2020-10-23 20:23:50,630 WARN L193 SmtUtils]: Spent 871.00 ms on a formula simplification. DAG size of input: 275 DAG size of output: 273 [2020-10-23 20:23:51,617 WARN L193 SmtUtils]: Spent 896.00 ms on a formula simplification. DAG size of input: 275 DAG size of output: 273 [2020-10-23 20:23:52,603 WARN L193 SmtUtils]: Spent 883.00 ms on a formula simplification. DAG size of input: 275 DAG size of output: 273 [2020-10-23 20:23:52,612 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:23:53,595 WARN L193 SmtUtils]: Spent 884.00 ms on a formula simplification. DAG size of input: 273 DAG size of output: 272 [2020-10-23 20:23:54,622 WARN L193 SmtUtils]: Spent 912.00 ms on a formula simplification. DAG size of input: 273 DAG size of output: 272 [2020-10-23 20:23:55,603 WARN L193 SmtUtils]: Spent 870.00 ms on a formula simplification. DAG size of input: 273 DAG size of output: 272 [2020-10-23 20:23:56,591 WARN L193 SmtUtils]: Spent 890.00 ms on a formula simplification. DAG size of input: 273 DAG size of output: 272 [2020-10-23 20:23:56,598 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:23:57,319 WARN L193 SmtUtils]: Spent 704.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 209 [2020-10-23 20:23:58,037 WARN L193 SmtUtils]: Spent 694.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 209 [2020-10-23 20:23:58,767 WARN L193 SmtUtils]: Spent 708.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 209 [2020-10-23 20:23:59,515 WARN L193 SmtUtils]: Spent 714.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 209 [2020-10-23 20:24:00,261 WARN L193 SmtUtils]: Spent 726.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 209 [2020-10-23 20:24:01,002 WARN L193 SmtUtils]: Spent 713.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 209 [2020-10-23 20:24:01,707 WARN L193 SmtUtils]: Spent 684.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 209 [2020-10-23 20:24:02,443 WARN L193 SmtUtils]: Spent 717.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 209 [2020-10-23 20:24:02,446 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:24:03,476 WARN L193 SmtUtils]: Spent 910.00 ms on a formula simplification. DAG size of input: 275 DAG size of output: 273 [2020-10-23 20:24:04,472 WARN L193 SmtUtils]: Spent 912.00 ms on a formula simplification. DAG size of input: 275 DAG size of output: 273 [2020-10-23 20:24:05,537 WARN L193 SmtUtils]: Spent 959.00 ms on a formula simplification. DAG size of input: 275 DAG size of output: 273 [2020-10-23 20:24:06,579 WARN L193 SmtUtils]: Spent 914.00 ms on a formula simplification. DAG size of input: 275 DAG size of output: 273 [2020-10-23 20:24:06,589 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:24:07,322 WARN L193 SmtUtils]: Spent 710.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 209 [2020-10-23 20:24:08,072 WARN L193 SmtUtils]: Spent 731.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 209 [2020-10-23 20:24:08,794 WARN L193 SmtUtils]: Spent 702.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 209 [2020-10-23 20:24:09,516 WARN L193 SmtUtils]: Spent 703.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 209 [2020-10-23 20:24:10,260 WARN L193 SmtUtils]: Spent 722.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 209 [2020-10-23 20:24:11,016 WARN L193 SmtUtils]: Spent 725.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 209 [2020-10-23 20:24:11,773 WARN L193 SmtUtils]: Spent 732.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 209 [2020-10-23 20:24:12,529 WARN L193 SmtUtils]: Spent 734.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 209 [2020-10-23 20:24:12,532 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:24:13,472 WARN L193 SmtUtils]: Spent 862.00 ms on a formula simplification. DAG size of input: 268 DAG size of output: 265 [2020-10-23 20:24:14,436 WARN L193 SmtUtils]: Spent 873.00 ms on a formula simplification. DAG size of input: 268 DAG size of output: 265 [2020-10-23 20:24:15,415 WARN L193 SmtUtils]: Spent 889.00 ms on a formula simplification. DAG size of input: 268 DAG size of output: 265 [2020-10-23 20:24:16,431 WARN L193 SmtUtils]: Spent 891.00 ms on a formula simplification. DAG size of input: 268 DAG size of output: 265 [2020-10-23 20:24:16,437 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:24:17,452 WARN L193 SmtUtils]: Spent 901.00 ms on a formula simplification. DAG size of input: 270 DAG size of output: 269 [2020-10-23 20:24:18,466 WARN L193 SmtUtils]: Spent 912.00 ms on a formula simplification. DAG size of input: 270 DAG size of output: 269 [2020-10-23 20:24:19,448 WARN L193 SmtUtils]: Spent 874.00 ms on a formula simplification. DAG size of input: 270 DAG size of output: 269 [2020-10-23 20:24:20,465 WARN L193 SmtUtils]: Spent 913.00 ms on a formula simplification. DAG size of input: 270 DAG size of output: 269 [2020-10-23 20:24:20,471 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:24:21,461 WARN L193 SmtUtils]: Spent 891.00 ms on a formula simplification. DAG size of input: 269 DAG size of output: 266 [2020-10-23 20:24:22,464 WARN L193 SmtUtils]: Spent 902.00 ms on a formula simplification. DAG size of input: 269 DAG size of output: 266 [2020-10-23 20:24:23,500 WARN L193 SmtUtils]: Spent 918.00 ms on a formula simplification. DAG size of input: 269 DAG size of output: 266 [2020-10-23 20:24:24,484 WARN L193 SmtUtils]: Spent 897.00 ms on a formula simplification. DAG size of input: 269 DAG size of output: 266 [2020-10-23 20:24:24,491 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:24:24,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 20:24:24,994 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 20:24:25,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 20:24:25,355 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 20:24:25,653 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-23 20:24:25,654 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-23 20:24:25,658 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-23 20:24:25,712 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 08:24:25 BoogieIcfgContainer [2020-10-23 20:24:25,712 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 20:24:25,714 INFO L168 Benchmark]: Toolchain (without parser) took 128378.41 ms. Allocated memory was 154.1 MB in the beginning and 973.1 MB in the end (delta: 818.9 MB). Free memory was 129.6 MB in the beginning and 663.0 MB in the end (delta: -533.4 MB). Peak memory consumption was 286.6 MB. Max. memory is 8.0 GB. [2020-10-23 20:24:25,714 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 154.1 MB. Free memory is still 129.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 20:24:25,714 INFO L168 Benchmark]: CACSL2BoogieTranslator took 639.51 ms. Allocated memory is still 154.1 MB. Free memory was 128.9 MB in the beginning and 106.9 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2020-10-23 20:24:25,715 INFO L168 Benchmark]: Boogie Preprocessor took 113.28 ms. Allocated memory is still 154.1 MB. Free memory was 106.7 MB in the beginning and 134.2 MB in the end (delta: -27.5 MB). Peak memory consumption was 4.7 MB. Max. memory is 8.0 GB. [2020-10-23 20:24:25,715 INFO L168 Benchmark]: RCFGBuilder took 1532.20 ms. Allocated memory is still 154.1 MB. Free memory was 134.2 MB in the beginning and 86.0 MB in the end (delta: 48.2 MB). Peak memory consumption was 64.0 MB. Max. memory is 8.0 GB. [2020-10-23 20:24:25,718 INFO L168 Benchmark]: TraceAbstraction took 126081.28 ms. Allocated memory was 154.1 MB in the beginning and 973.1 MB in the end (delta: 818.9 MB). Free memory was 86.0 MB in the beginning and 663.0 MB in the end (delta: -577.0 MB). Peak memory consumption was 242.0 MB. Max. memory is 8.0 GB. [2020-10-23 20:24:25,719 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 154.1 MB. Free memory is still 129.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 639.51 ms. Allocated memory is still 154.1 MB. Free memory was 128.9 MB in the beginning and 106.9 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 113.28 ms. Allocated memory is still 154.1 MB. Free memory was 106.7 MB in the beginning and 134.2 MB in the end (delta: -27.5 MB). Peak memory consumption was 4.7 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1532.20 ms. Allocated memory is still 154.1 MB. Free memory was 134.2 MB in the beginning and 86.0 MB in the end (delta: 48.2 MB). Peak memory consumption was 64.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 126081.28 ms. Allocated memory was 154.1 MB in the beginning and 973.1 MB in the end (delta: 818.9 MB). Free memory was 86.0 MB in the beginning and 663.0 MB in the end (delta: -577.0 MB). Peak memory consumption was 242.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L50] int waterLevel = 1; [L51] int methaneLevelCritical = 0; [L227] int pumpRunning = 0; [L228] int systemActive = 1; [L631] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L837] int switchedOnBeforeTS ; [L886] int cleanupTimeShifts = 4; [L963] int retValue_acc ; [L964] int tmp ; [L968] FCALL select_helpers() [L969] FCALL select_features() [L970] CALL, EXPR valid_product() [L1012] int retValue_acc ; [L1015] retValue_acc = 1 [L1016] return (retValue_acc); [L970] RET, EXPR valid_product() [L970] tmp = valid_product() [L972] COND TRUE \read(tmp) [L974] FCALL setup() [L975] CALL runTest() [L953] CALL __utac_acc__Specification5_spec__1() [L842] switchedOnBeforeTS = 0 [L953] RET __utac_acc__Specification5_spec__1() [L954] CALL test() [L157] int splverifierCounter ; [L158] int tmp ; [L159] int tmp___0 ; [L160] int tmp___1 ; [L161] int tmp___2 ; [L164] splverifierCounter = 0 [L166] COND TRUE 1 [L168] COND TRUE splverifierCounter < 4 [L174] tmp = __VERIFIER_nondet_int() [L176] COND TRUE \read(tmp) [L178] CALL waterRise() [L68] COND TRUE waterLevel < 2 [L69] waterLevel = waterLevel + 1 [L178] RET waterRise() [L184] tmp___0 = __VERIFIER_nondet_int() [L186] COND FALSE !(\read(tmp___0)) [L194] tmp___2 = __VERIFIER_nondet_int() [L196] COND TRUE \read(tmp___2) [L211] CALL timeShift() [L237] CALL __utac_acc__Specification5_spec__2() [L851] CALL, EXPR isPumpRunning() [L364] int retValue_acc ; [L367] retValue_acc = pumpRunning [L368] return (retValue_acc); [L851] RET, EXPR isPumpRunning() [L851] switchedOnBeforeTS = isPumpRunning() [L237] RET __utac_acc__Specification5_spec__2() [L239] COND FALSE !(\read(pumpRunning)) [L246] COND TRUE \read(systemActive) [L248] CALL processEnvironment() [L294] int tmp ; [L297] COND FALSE !(\read(pumpRunning)) [L312] CALL processEnvironment__wrappee__highWaterSensor() [L268] int tmp ; [L271] COND TRUE ! pumpRunning [L273] CALL, EXPR isHighWaterLevel() [L409] int retValue_acc ; [L410] int tmp ; [L411] int tmp___0 ; [L415] CALL, EXPR isHighWaterSensorDry() [L130] int retValue_acc ; [L133] COND FALSE !(waterLevel < 2) [L137] retValue_acc = 0 [L138] return (retValue_acc); [L415] RET, EXPR isHighWaterSensorDry() [L415] tmp = isHighWaterSensorDry() [L417] COND FALSE !(\read(tmp)) [L420] tmp___0 = 1 [L422] retValue_acc = tmp___0 [L423] return (retValue_acc); [L273] RET, EXPR isHighWaterLevel() [L273] tmp = isHighWaterLevel() [L275] COND TRUE \read(tmp) [L277] CALL activatePump() [L328] int tmp ; [L332] CALL, EXPR isMethaneAlarm() [L353] int retValue_acc ; [L357] CALL, EXPR isMethaneLevelCritical() [L89] int retValue_acc ; [L92] retValue_acc = methaneLevelCritical [L93] return (retValue_acc); [L357] RET, EXPR isMethaneLevelCritical() [L357] retValue_acc = isMethaneLevelCritical() [L359] return (retValue_acc); [L332] RET, EXPR isMethaneAlarm() [L332] tmp = isMethaneAlarm() [L334] COND FALSE !(\read(tmp)) [L338] CALL activatePump__wrappee__lowWaterSensor() [L322] pumpRunning = 1 [L338] RET activatePump__wrappee__lowWaterSensor() [L277] RET activatePump() [L312] RET processEnvironment__wrappee__highWaterSensor() [L248] RET processEnvironment() [L254] CALL __utac_acc__Specification5_spec__3() [L857] int tmp ; [L858] int tmp___0 ; [L862] CALL, EXPR getWaterLevel() [L121] int retValue_acc ; [L124] retValue_acc = waterLevel [L125] return (retValue_acc); [L862] RET, EXPR getWaterLevel() [L862] tmp = getWaterLevel() [L864] COND FALSE !(tmp != 2) [L254] RET __utac_acc__Specification5_spec__3() [L211] RET timeShift() [L166] COND TRUE 1 [L168] COND TRUE splverifierCounter < 4 [L174] tmp = __VERIFIER_nondet_int() [L176] COND FALSE !(\read(tmp)) [L184] tmp___0 = __VERIFIER_nondet_int() [L186] COND FALSE !(\read(tmp___0)) [L194] tmp___2 = __VERIFIER_nondet_int() [L196] COND TRUE \read(tmp___2) [L211] CALL timeShift() [L237] CALL __utac_acc__Specification5_spec__2() [L851] CALL, EXPR isPumpRunning() [L364] int retValue_acc ; [L367] retValue_acc = pumpRunning [L368] return (retValue_acc); [L851] RET, EXPR isPumpRunning() [L851] switchedOnBeforeTS = isPumpRunning() [L237] RET __utac_acc__Specification5_spec__2() [L239] COND TRUE \read(pumpRunning) [L241] CALL lowerWaterLevel() [L56] COND TRUE waterLevel > 0 [L57] waterLevel = waterLevel - 1 [L241] RET lowerWaterLevel() [L246] COND TRUE \read(systemActive) [L248] CALL processEnvironment() [L294] int tmp ; [L297] COND TRUE \read(pumpRunning) [L299] CALL, EXPR isLowWaterLevel() [L428] int retValue_acc ; [L429] int tmp ; [L430] int tmp___0 ; [L434] CALL, EXPR isLowWaterSensorDry() [L144] int retValue_acc ; [L147] retValue_acc = waterLevel == 0 [L148] return (retValue_acc); [L434] RET, EXPR isLowWaterSensorDry() [L434] tmp = isLowWaterSensorDry() [L436] COND TRUE \read(tmp) [L437] tmp___0 = 0 [L441] retValue_acc = tmp___0 [L442] return (retValue_acc); [L299] RET, EXPR isLowWaterLevel() [L299] tmp = isLowWaterLevel() [L301] COND FALSE !(\read(tmp)) [L307] CALL processEnvironment__wrappee__highWaterSensor() [L268] int tmp ; [L271] COND FALSE !(! pumpRunning) [L286] FCALL processEnvironment__wrappee__base() [L307] RET processEnvironment__wrappee__highWaterSensor() [L248] RET processEnvironment() [L254] CALL __utac_acc__Specification5_spec__3() [L857] int tmp ; [L858] int tmp___0 ; [L862] CALL, EXPR getWaterLevel() [L121] int retValue_acc ; [L124] retValue_acc = waterLevel [L125] return (retValue_acc); [L862] RET, EXPR getWaterLevel() [L862] tmp = getWaterLevel() [L864] COND TRUE tmp != 2 [L866] CALL, EXPR isPumpRunning() [L364] int retValue_acc ; [L367] retValue_acc = pumpRunning [L368] return (retValue_acc); [L866] RET, EXPR isPumpRunning() [L866] tmp___0 = isPumpRunning() [L868] COND TRUE \read(tmp___0) [L869] COND TRUE ! switchedOnBeforeTS [L871] CALL __automaton_fail() [L832] CALL reach_error() [L3] __assert_fail("0", "minepump_spec5_product59.cil.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 45 procedures, 678 locations, 5 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 125.9s, OverallIterations: 9, TraceHistogramMax: 3, AutomataDifference: 43.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2433 SDtfs, 5597 SDslu, 4761 SDs, 0 SdLazy, 10741 SolverSat, 1718 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 18.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 415 GetRequests, 267 SyntacticMatches, 4 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 879 ImplicationChecksByTransitivity, 20.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2631occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 3.4s AutomataMinimizationTime, 8 MinimizatonAttempts, 1068 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...