/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_product39.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 20:19:47,657 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 20:19:47,660 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 20:19:47,698 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 20:19:47,699 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 20:19:47,700 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 20:19:47,702 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 20:19:47,705 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 20:19:47,707 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 20:19:47,708 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 20:19:47,709 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 20:19:47,711 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 20:19:47,711 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 20:19:47,713 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 20:19:47,714 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 20:19:47,716 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 20:19:47,717 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 20:19:47,718 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 20:19:47,720 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 20:19:47,722 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 20:19:47,724 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 20:19:47,726 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 20:19:47,728 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 20:19:47,729 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 20:19:47,737 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-23 20:19:47,737 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-23 20:19:47,738 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-23 20:19:47,742 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-23 20:19:47,743 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-23 20:19:47,744 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-23 20:19:47,744 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-23 20:19:47,749 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-23 20:19:47,750 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-23 20:19:47,752 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-23 20:19:47,755 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-23 20:19:47,755 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-23 20:19:47,762 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-23 20:19:47,764 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-23 20:19:47,764 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 20:19:47,766 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 20:19:47,767 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 20:19:47,769 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 20:19:47,789 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 20:19:47,789 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 20:19:47,794 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 20:19:47,794 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 20:19:47,794 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 20:19:47,794 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 20:19:47,795 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 20:19:47,795 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 20:19:47,795 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 20:19:47,795 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 20:19:47,796 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 20:19:47,797 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 20:19:47,797 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 20:19:47,797 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 20:19:47,798 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 20:19:47,798 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-23 20:19:47,798 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 20:19:47,799 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 20:19:47,799 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 20:19:47,799 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 20:19:47,799 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-23 20:19:47,799 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 20:19:47,799 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 20:19:48,192 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 20:19:48,219 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 20:19:48,222 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 20:19:48,224 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 20:19:48,224 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 20:19:48,225 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product39.cil.c [2020-10-23 20:19:48,321 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c11c3b8cc/92846abcd5144d438b1e28fc9196707c/FLAGdb53f3143 [2020-10-23 20:19:49,153 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 20:19:49,154 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec5_product39.cil.c [2020-10-23 20:19:49,168 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c11c3b8cc/92846abcd5144d438b1e28fc9196707c/FLAGdb53f3143 [2020-10-23 20:19:49,190 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c11c3b8cc/92846abcd5144d438b1e28fc9196707c [2020-10-23 20:19:49,193 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 20:19:49,201 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 20:19:49,203 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 20:19:49,203 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 20:19:49,207 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 20:19:49,208 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:19:49" (1/1) ... [2020-10-23 20:19:49,212 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@325426bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:19:49, skipping insertion in model container [2020-10-23 20:19:49,213 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:19:49" (1/1) ... [2020-10-23 20:19:49,222 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 20:19:49,266 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 20:19:49,647 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 20:19:49,669 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 20:19:49,763 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 20:19:49,802 INFO L208 MainTranslator]: Completed translation [2020-10-23 20:19:49,802 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:19:49 WrapperNode [2020-10-23 20:19:49,802 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 20:19:49,804 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 20:19:49,804 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 20:19:49,804 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 20:19:49,817 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:19:49" (1/1) ... [2020-10-23 20:19:49,817 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:19:49" (1/1) ... [2020-10-23 20:19:49,840 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:19:49" (1/1) ... [2020-10-23 20:19:49,841 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:19:49" (1/1) ... [2020-10-23 20:19:49,875 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:19:49" (1/1) ... [2020-10-23 20:19:49,888 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:19:49" (1/1) ... [2020-10-23 20:19:49,900 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:19:49" (1/1) ... [2020-10-23 20:19:49,935 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 20:19:49,940 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 20:19:49,940 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 20:19:49,940 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 20:19:49,942 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:19:49" (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 20:19:50,058 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 20:19:50,059 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 20:19:50,059 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-10-23 20:19:50,059 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 20:19:50,059 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-10-23 20:19:50,060 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-10-23 20:19:50,060 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-10-23 20:19:50,060 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-10-23 20:19:50,060 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-10-23 20:19:50,060 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-10-23 20:19:50,061 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-10-23 20:19:50,061 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-10-23 20:19:50,061 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-10-23 20:19:50,061 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-10-23 20:19:50,061 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-10-23 20:19:50,061 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-10-23 20:19:50,062 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-10-23 20:19:50,062 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-10-23 20:19:50,062 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-10-23 20:19:50,062 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-10-23 20:19:50,062 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-10-23 20:19:50,063 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-10-23 20:19:50,063 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-10-23 20:19:50,063 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-10-23 20:19:50,063 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 20:19:50,063 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-10-23 20:19:50,063 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2020-10-23 20:19:50,064 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2020-10-23 20:19:50,064 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2020-10-23 20:19:50,064 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-10-23 20:19:50,064 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-10-23 20:19:50,064 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-10-23 20:19:50,065 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-10-23 20:19:50,065 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-10-23 20:19:50,065 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-10-23 20:19:50,065 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-10-23 20:19:50,065 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-10-23 20:19:50,065 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-10-23 20:19:50,066 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-10-23 20:19:50,066 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-10-23 20:19:50,066 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-10-23 20:19:50,066 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-10-23 20:19:50,066 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 20:19:50,067 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 20:19:50,067 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 20:19:50,067 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 20:19:50,067 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-23 20:19:50,067 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-10-23 20:19:50,067 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-10-23 20:19:50,068 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-10-23 20:19:50,068 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-10-23 20:19:50,068 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-10-23 20:19:50,068 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-10-23 20:19:50,068 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-10-23 20:19:50,069 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-10-23 20:19:50,069 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-10-23 20:19:50,069 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-10-23 20:19:50,069 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-10-23 20:19:50,069 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-10-23 20:19:50,070 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-10-23 20:19:50,070 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-10-23 20:19:50,070 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-10-23 20:19:50,070 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-10-23 20:19:50,070 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2020-10-23 20:19:50,071 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2020-10-23 20:19:50,071 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-10-23 20:19:50,071 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-10-23 20:19:50,071 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-10-23 20:19:50,071 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-10-23 20:19:50,071 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-10-23 20:19:50,072 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-10-23 20:19:50,072 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-10-23 20:19:50,072 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-10-23 20:19:50,072 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-10-23 20:19:50,072 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-10-23 20:19:50,072 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2020-10-23 20:19:50,073 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-10-23 20:19:50,073 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-10-23 20:19:50,073 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 20:19:50,073 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-10-23 20:19:50,073 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-23 20:19:50,073 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-23 20:19:50,074 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-10-23 20:19:50,074 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-23 20:19:50,074 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-23 20:19:50,074 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 20:19:50,074 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-23 20:19:50,074 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-10-23 20:19:50,075 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 20:19:50,075 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-10-23 20:19:50,075 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-10-23 20:19:50,075 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 20:19:50,075 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-10-23 20:19:50,075 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-10-23 20:19:50,075 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-10-23 20:19:50,076 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 20:19:50,076 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 20:19:50,076 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 20:19:51,745 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 20:19:51,745 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-23 20:19:51,748 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:19:51 BoogieIcfgContainer [2020-10-23 20:19:51,748 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 20:19:51,750 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 20:19:51,750 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 20:19:51,754 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 20:19:51,754 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 08:19:49" (1/3) ... [2020-10-23 20:19:51,755 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17151fb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:19:51, skipping insertion in model container [2020-10-23 20:19:51,755 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:19:49" (2/3) ... [2020-10-23 20:19:51,756 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17151fb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:19:51, skipping insertion in model container [2020-10-23 20:19:51,756 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:19:51" (3/3) ... [2020-10-23 20:19:51,758 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product39.cil.c [2020-10-23 20:19:51,770 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-23 20:19:51,776 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-10-23 20:19:51,790 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-23 20:19:51,813 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 20:19:51,814 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 20:19:51,814 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-10-23 20:19:51,814 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 20:19:51,814 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 20:19:51,814 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 20:19:51,814 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 20:19:51,815 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 20:19:51,840 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states. [2020-10-23 20:19:51,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-10-23 20:19:51,862 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:19:51,863 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 20:19:51,864 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 20:19:51,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:19:51,871 INFO L82 PathProgramCache]: Analyzing trace with hash -302652600, now seen corresponding path program 1 times [2020-10-23 20:19:51,879 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:19:51,880 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1948057168] [2020-10-23 20:19:51,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:19:51,966 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:19:52,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:52,881 WARN L193 SmtUtils]: Spent 428.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:19:52,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:19:52,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:52,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 20:19:52,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:52,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 20:19:52,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:52,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 20:19:52,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:52,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 20:19:52,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:53,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 20:19:53,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:53,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-23 20:19:53,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:53,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:19:53,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:53,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-10-23 20:19:53,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:53,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-10-23 20:19:53,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:53,088 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 20:19:53,090 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1948057168] [2020-10-23 20:19:53,092 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:19:53,093 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-23 20:19:53,093 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543781902] [2020-10-23 20:19:53,099 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-23 20:19:53,100 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:19:53,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-23 20:19:53,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-23 20:19:53,117 INFO L87 Difference]: Start difference. First operand 334 states. Second operand 4 states. [2020-10-23 20:19:54,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:19:54,856 INFO L93 Difference]: Finished difference Result 520 states and 611 transitions. [2020-10-23 20:19:54,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-23 20:19:54,858 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 166 [2020-10-23 20:19:54,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:19:54,877 INFO L225 Difference]: With dead ends: 520 [2020-10-23 20:19:54,877 INFO L226 Difference]: Without dead ends: 327 [2020-10-23 20:19:54,882 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-23 20:19:54,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2020-10-23 20:19:55,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 280. [2020-10-23 20:19:55,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 280 states. [2020-10-23 20:19:55,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 305 transitions. [2020-10-23 20:19:55,067 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 305 transitions. Word has length 166 [2020-10-23 20:19:55,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:19:55,068 INFO L481 AbstractCegarLoop]: Abstraction has 280 states and 305 transitions. [2020-10-23 20:19:55,068 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-23 20:19:55,069 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 305 transitions. [2020-10-23 20:19:55,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-10-23 20:19:55,074 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:19:55,074 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 20:19:55,075 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 20:19:55,075 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 20:19:55,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:19:55,076 INFO L82 PathProgramCache]: Analyzing trace with hash -263167836, now seen corresponding path program 1 times [2020-10-23 20:19:55,076 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:19:55,076 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [783852035] [2020-10-23 20:19:55,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:19:55,081 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:19:55,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:55,546 WARN L193 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:19:55,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:19:55,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:55,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 20:19:55,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:55,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 20:19:55,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:55,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 20:19:55,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:55,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 20:19:55,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:55,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 20:19:55,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:55,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-23 20:19:55,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:55,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:19:55,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:55,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-10-23 20:19:55,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:55,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-23 20:19:55,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:55,680 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 20:19:55,680 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [783852035] [2020-10-23 20:19:55,681 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:19:55,681 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-23 20:19:55,681 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298498087] [2020-10-23 20:19:55,682 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-23 20:19:55,682 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:19:55,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-23 20:19:55,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-23 20:19:55,684 INFO L87 Difference]: Start difference. First operand 280 states and 305 transitions. Second operand 5 states. [2020-10-23 20:19:56,600 WARN L193 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:19:58,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:19:58,022 INFO L93 Difference]: Finished difference Result 440 states and 495 transitions. [2020-10-23 20:19:58,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-23 20:19:58,023 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 167 [2020-10-23 20:19:58,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:19:58,031 INFO L225 Difference]: With dead ends: 440 [2020-10-23 20:19:58,031 INFO L226 Difference]: Without dead ends: 316 [2020-10-23 20:19:58,034 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-23 20:19:58,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2020-10-23 20:19:58,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 270. [2020-10-23 20:19:58,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 270 states. [2020-10-23 20:19:58,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 292 transitions. [2020-10-23 20:19:58,141 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 292 transitions. Word has length 167 [2020-10-23 20:19:58,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:19:58,142 INFO L481 AbstractCegarLoop]: Abstraction has 270 states and 292 transitions. [2020-10-23 20:19:58,142 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-23 20:19:58,142 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 292 transitions. [2020-10-23 20:19:58,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-10-23 20:19:58,145 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:19:58,146 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 20:19:58,146 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 20:19:58,146 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 20:19:58,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:19:58,147 INFO L82 PathProgramCache]: Analyzing trace with hash -1009077739, now seen corresponding path program 1 times [2020-10-23 20:19:58,147 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:19:58,148 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [643245882] [2020-10-23 20:19:58,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:19:58,152 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:19:58,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:58,724 WARN L193 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:19:58,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:19:58,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:58,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 20:19:58,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:58,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 20:19:58,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:58,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 20:19:58,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:58,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 20:19:58,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:58,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 20:19:58,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:58,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-23 20:19:58,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:58,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:19:58,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:58,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-10-23 20:19:58,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:58,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2020-10-23 20:19:58,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:58,960 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 20:19:58,960 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [643245882] [2020-10-23 20:19:58,961 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:19:58,961 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-23 20:19:58,961 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347175164] [2020-10-23 20:19:58,962 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-23 20:19:58,962 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:19:58,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-23 20:19:58,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-23 20:19:58,963 INFO L87 Difference]: Start difference. First operand 270 states and 292 transitions. Second operand 10 states. [2020-10-23 20:19:59,818 WARN L193 SmtUtils]: Spent 465.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:20:00,359 WARN L193 SmtUtils]: Spent 372.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 20:20:00,764 WARN L193 SmtUtils]: Spent 380.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-23 20:20:01,179 WARN L193 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:20:01,606 WARN L193 SmtUtils]: Spent 389.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 20:20:02,042 WARN L193 SmtUtils]: Spent 397.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:20:03,529 WARN L193 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:20:06,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:20:06,109 INFO L93 Difference]: Finished difference Result 712 states and 817 transitions. [2020-10-23 20:20:06,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-23 20:20:06,110 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 176 [2020-10-23 20:20:06,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:20:06,120 INFO L225 Difference]: With dead ends: 712 [2020-10-23 20:20:06,120 INFO L226 Difference]: Without dead ends: 562 [2020-10-23 20:20:06,126 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2020-10-23 20:20:06,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2020-10-23 20:20:06,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 491. [2020-10-23 20:20:06,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 491 states. [2020-10-23 20:20:06,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 551 transitions. [2020-10-23 20:20:06,396 INFO L78 Accepts]: Start accepts. Automaton has 491 states and 551 transitions. Word has length 176 [2020-10-23 20:20:06,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:20:06,397 INFO L481 AbstractCegarLoop]: Abstraction has 491 states and 551 transitions. [2020-10-23 20:20:06,397 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-23 20:20:06,397 INFO L276 IsEmpty]: Start isEmpty. Operand 491 states and 551 transitions. [2020-10-23 20:20:06,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-10-23 20:20:06,401 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:20:06,401 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 20:20:06,402 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-23 20:20:06,402 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 20:20:06,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:20:06,402 INFO L82 PathProgramCache]: Analyzing trace with hash 2063743210, now seen corresponding path program 1 times [2020-10-23 20:20:06,403 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:20:06,403 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1641687010] [2020-10-23 20:20:06,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:20:06,406 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:20:06,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:06,933 WARN L193 SmtUtils]: Spent 419.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:20:06,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:20:06,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:06,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 20:20:07,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:07,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 20:20:07,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:07,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 20:20:07,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:07,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 20:20:07,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:07,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 20:20:07,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:07,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-10-23 20:20:07,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:07,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-10-23 20:20:07,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:07,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:20:07,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:07,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2020-10-23 20:20:07,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:07,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-10-23 20:20:07,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:07,222 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 20:20:07,222 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1641687010] [2020-10-23 20:20:07,223 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:20:07,223 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-23 20:20:07,223 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323500375] [2020-10-23 20:20:07,225 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-23 20:20:07,226 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:20:07,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-23 20:20:07,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-23 20:20:07,227 INFO L87 Difference]: Start difference. First operand 491 states and 551 transitions. Second operand 10 states. [2020-10-23 20:20:07,914 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:20:09,023 WARN L193 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:20:09,439 WARN L193 SmtUtils]: Spent 383.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 20:20:10,845 WARN L193 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:20:11,259 WARN L193 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:20:11,710 WARN L193 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:20:12,236 WARN L193 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:20:12,629 WARN L193 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 20:20:13,015 WARN L193 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:20:14,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:20:14,026 INFO L93 Difference]: Finished difference Result 1119 states and 1340 transitions. [2020-10-23 20:20:14,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-23 20:20:14,027 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 185 [2020-10-23 20:20:14,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:20:14,036 INFO L225 Difference]: With dead ends: 1119 [2020-10-23 20:20:14,037 INFO L226 Difference]: Without dead ends: 748 [2020-10-23 20:20:14,039 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2020-10-23 20:20:14,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 748 states. [2020-10-23 20:20:14,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 748 to 659. [2020-10-23 20:20:14,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 659 states. [2020-10-23 20:20:14,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 743 transitions. [2020-10-23 20:20:14,357 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 743 transitions. Word has length 185 [2020-10-23 20:20:14,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:20:14,357 INFO L481 AbstractCegarLoop]: Abstraction has 659 states and 743 transitions. [2020-10-23 20:20:14,357 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-23 20:20:14,358 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 743 transitions. [2020-10-23 20:20:14,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2020-10-23 20:20:14,363 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:20:14,363 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] [2020-10-23 20:20:14,364 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-23 20:20:14,364 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 20:20:14,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:20:14,365 INFO L82 PathProgramCache]: Analyzing trace with hash -1341688644, now seen corresponding path program 1 times [2020-10-23 20:20:14,365 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:20:14,366 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2085645217] [2020-10-23 20:20:14,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:20:14,370 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:20:14,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:14,821 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:20:14,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:20:14,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:14,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 20:20:14,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:14,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 20:20:14,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:14,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 20:20:14,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:14,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 20:20:14,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:14,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 20:20:14,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:14,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-23 20:20:14,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:14,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:20:14,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:14,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-23 20:20:14,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:14,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:20:14,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:15,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:20:15,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:15,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 20:20:15,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:15,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 20:20:15,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:15,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2020-10-23 20:20:15,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:15,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2020-10-23 20:20:15,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:15,162 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 20:20:15,162 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2085645217] [2020-10-23 20:20:15,162 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:20:15,163 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-23 20:20:15,163 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321921901] [2020-10-23 20:20:15,163 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-23 20:20:15,164 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:20:15,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-23 20:20:15,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-10-23 20:20:15,165 INFO L87 Difference]: Start difference. First operand 659 states and 743 transitions. Second operand 13 states. [2020-10-23 20:20:16,012 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:20:16,424 WARN L193 SmtUtils]: Spent 384.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-23 20:20:16,835 WARN L193 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:20:17,224 WARN L193 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 20:20:17,590 WARN L193 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:20:18,972 WARN L193 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:20:19,384 WARN L193 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 20:20:19,796 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:20:20,234 WARN L193 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 20:20:20,643 WARN L193 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:20:22,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:20:22,225 INFO L93 Difference]: Finished difference Result 1339 states and 1599 transitions. [2020-10-23 20:20:22,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-23 20:20:22,226 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 214 [2020-10-23 20:20:22,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:20:22,232 INFO L225 Difference]: With dead ends: 1339 [2020-10-23 20:20:22,232 INFO L226 Difference]: Without dead ends: 800 [2020-10-23 20:20:22,235 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=110, Invalid=442, Unknown=0, NotChecked=0, Total=552 [2020-10-23 20:20:22,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 800 states. [2020-10-23 20:20:22,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 800 to 674. [2020-10-23 20:20:22,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 674 states. [2020-10-23 20:20:22,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 674 states to 674 states and 759 transitions. [2020-10-23 20:20:22,482 INFO L78 Accepts]: Start accepts. Automaton has 674 states and 759 transitions. Word has length 214 [2020-10-23 20:20:22,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:20:22,482 INFO L481 AbstractCegarLoop]: Abstraction has 674 states and 759 transitions. [2020-10-23 20:20:22,483 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-23 20:20:22,483 INFO L276 IsEmpty]: Start isEmpty. Operand 674 states and 759 transitions. [2020-10-23 20:20:22,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2020-10-23 20:20:22,487 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:20:22,487 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] [2020-10-23 20:20:22,487 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-23 20:20:22,488 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 20:20:22,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:20:22,488 INFO L82 PathProgramCache]: Analyzing trace with hash -1755320036, now seen corresponding path program 1 times [2020-10-23 20:20:22,489 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:20:22,489 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2004637657] [2020-10-23 20:20:22,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:20:22,493 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:20:22,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:22,888 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:20:22,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:20:22,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:22,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 20:20:22,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:22,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 20:20:22,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:22,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 20:20:22,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:22,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 20:20:22,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:22,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 20:20:22,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:22,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-23 20:20:22,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:22,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:20:22,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:22,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-23 20:20:22,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:22,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:20:22,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:23,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:20:23,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:23,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 20:20:23,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:23,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 20:20:23,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:23,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2020-10-23 20:20:23,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:23,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2020-10-23 20:20:23,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:23,128 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 20:20:23,129 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2004637657] [2020-10-23 20:20:23,130 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:20:23,130 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-23 20:20:23,130 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047164242] [2020-10-23 20:20:23,132 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-23 20:20:23,133 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:20:23,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-23 20:20:23,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-23 20:20:23,134 INFO L87 Difference]: Start difference. First operand 674 states and 759 transitions. Second operand 10 states. [2020-10-23 20:20:24,891 WARN L193 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:20:25,300 WARN L193 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-23 20:20:25,730 WARN L193 SmtUtils]: Spent 391.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-10-23 20:20:26,142 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:20:26,560 WARN L193 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 20:20:26,934 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:20:28,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:20:28,122 INFO L93 Difference]: Finished difference Result 1360 states and 1600 transitions. [2020-10-23 20:20:28,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-23 20:20:28,123 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 214 [2020-10-23 20:20:28,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:20:28,129 INFO L225 Difference]: With dead ends: 1360 [2020-10-23 20:20:28,129 INFO L226 Difference]: Without dead ends: 806 [2020-10-23 20:20:28,132 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2020-10-23 20:20:28,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 806 states. [2020-10-23 20:20:28,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 806 to 690. [2020-10-23 20:20:28,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 690 states. [2020-10-23 20:20:28,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 690 states to 690 states and 775 transitions. [2020-10-23 20:20:28,463 INFO L78 Accepts]: Start accepts. Automaton has 690 states and 775 transitions. Word has length 214 [2020-10-23 20:20:28,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:20:28,464 INFO L481 AbstractCegarLoop]: Abstraction has 690 states and 775 transitions. [2020-10-23 20:20:28,464 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-23 20:20:28,464 INFO L276 IsEmpty]: Start isEmpty. Operand 690 states and 775 transitions. [2020-10-23 20:20:28,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2020-10-23 20:20:28,468 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:20:28,468 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] [2020-10-23 20:20:28,468 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-23 20:20:28,468 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 20:20:28,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:20:28,469 INFO L82 PathProgramCache]: Analyzing trace with hash -1411206753, now seen corresponding path program 1 times [2020-10-23 20:20:28,469 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:20:28,470 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2015877443] [2020-10-23 20:20:28,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:20:28,473 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:20:28,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:28,930 WARN L193 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:20:28,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:20:28,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:29,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 20:20:29,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:29,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 20:20:29,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:29,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 20:20:29,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:29,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 20:20:29,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:29,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 20:20:29,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:29,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-23 20:20:29,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:29,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:20:29,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:29,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-23 20:20:29,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:29,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:20:29,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:29,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:20:29,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:29,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 20:20:29,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:29,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 20:20:29,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:29,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2020-10-23 20:20:29,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:29,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2020-10-23 20:20:29,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:29,205 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 20:20:29,205 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2015877443] [2020-10-23 20:20:29,206 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:20:29,206 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-23 20:20:29,206 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629337562] [2020-10-23 20:20:29,207 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-23 20:20:29,207 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:20:29,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-23 20:20:29,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-23 20:20:29,208 INFO L87 Difference]: Start difference. First operand 690 states and 775 transitions. Second operand 7 states. [2020-10-23 20:20:29,886 WARN L193 SmtUtils]: Spent 365.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:20:30,749 WARN L193 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:20:33,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:20:33,736 INFO L93 Difference]: Finished difference Result 2061 states and 2470 transitions. [2020-10-23 20:20:33,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-23 20:20:33,737 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 214 [2020-10-23 20:20:33,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:20:33,747 INFO L225 Difference]: With dead ends: 2061 [2020-10-23 20:20:33,747 INFO L226 Difference]: Without dead ends: 1491 [2020-10-23 20:20:33,750 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 39 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-10-23 20:20:33,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1491 states. [2020-10-23 20:20:34,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1491 to 1366. [2020-10-23 20:20:34,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1366 states. [2020-10-23 20:20:34,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1366 states to 1366 states and 1560 transitions. [2020-10-23 20:20:34,269 INFO L78 Accepts]: Start accepts. Automaton has 1366 states and 1560 transitions. Word has length 214 [2020-10-23 20:20:34,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:20:34,270 INFO L481 AbstractCegarLoop]: Abstraction has 1366 states and 1560 transitions. [2020-10-23 20:20:34,270 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-23 20:20:34,270 INFO L276 IsEmpty]: Start isEmpty. Operand 1366 states and 1560 transitions. [2020-10-23 20:20:34,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2020-10-23 20:20:34,274 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:20:34,275 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] [2020-10-23 20:20:34,275 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-23 20:20:34,275 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 20:20:34,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:20:34,276 INFO L82 PathProgramCache]: Analyzing trace with hash -578365122, now seen corresponding path program 1 times [2020-10-23 20:20:34,276 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:20:34,276 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [893759675] [2020-10-23 20:20:34,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:20:34,279 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:20:34,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:34,788 WARN L193 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:20:34,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:20:34,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:34,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 20:20:34,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:34,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 20:20:34,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:34,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 20:20:34,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:34,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 20:20:34,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:34,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 20:20:34,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:34,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-23 20:20:34,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:34,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-23 20:20:34,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:34,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:20:34,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:34,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-10-23 20:20:34,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:34,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:20:34,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:34,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:20:34,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:34,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 20:20:34,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:34,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 20:20:34,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:34,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2020-10-23 20:20:34,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:34,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-10-23 20:20:34,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:35,046 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 20:20:35,047 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [893759675] [2020-10-23 20:20:35,047 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:20:35,047 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-23 20:20:35,047 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799967366] [2020-10-23 20:20:35,048 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-23 20:20:35,048 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:20:35,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-23 20:20:35,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-10-23 20:20:35,049 INFO L87 Difference]: Start difference. First operand 1366 states and 1560 transitions. Second operand 14 states. [2020-10-23 20:20:36,073 WARN L193 SmtUtils]: Spent 665.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 207 [2020-10-23 20:20:37,214 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:20:38,734 WARN L193 SmtUtils]: Spent 720.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 209 [2020-10-23 20:20:39,494 WARN L193 SmtUtils]: Spent 712.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 211 [2020-10-23 20:20:40,027 WARN L193 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:20:40,437 WARN L193 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 20:20:41,183 WARN L193 SmtUtils]: Spent 705.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 210 [2020-10-23 20:20:41,634 WARN L193 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:20:42,079 WARN L193 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 20:20:42,527 WARN L193 SmtUtils]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:20:45,851 WARN L193 SmtUtils]: Spent 688.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 207 [2020-10-23 20:20:46,633 WARN L193 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:20:47,066 WARN L193 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:20:47,641 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:20:49,095 WARN L193 SmtUtils]: Spent 756.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 209 [2020-10-23 20:20:49,862 WARN L193 SmtUtils]: Spent 731.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 211 [2020-10-23 20:20:50,676 WARN L193 SmtUtils]: Spent 735.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 210 [2020-10-23 20:20:51,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:20:51,620 INFO L93 Difference]: Finished difference Result 3904 states and 4692 transitions. [2020-10-23 20:20:51,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-10-23 20:20:51,621 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 219 [2020-10-23 20:20:51,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:20:51,638 INFO L225 Difference]: With dead ends: 3904 [2020-10-23 20:20:51,638 INFO L226 Difference]: Without dead ends: 2935 [2020-10-23 20:20:51,644 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 617 ImplicationChecksByTransitivity, 10.0s TimeCoverageRelationStatistics Valid=499, Invalid=1853, Unknown=0, NotChecked=0, Total=2352 [2020-10-23 20:20:51,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2935 states. [2020-10-23 20:20:53,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2935 to 2499. [2020-10-23 20:20:53,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2499 states. [2020-10-23 20:20:53,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2499 states to 2499 states and 2835 transitions. [2020-10-23 20:20:53,129 INFO L78 Accepts]: Start accepts. Automaton has 2499 states and 2835 transitions. Word has length 219 [2020-10-23 20:20:53,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:20:53,130 INFO L481 AbstractCegarLoop]: Abstraction has 2499 states and 2835 transitions. [2020-10-23 20:20:53,130 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-23 20:20:53,130 INFO L276 IsEmpty]: Start isEmpty. Operand 2499 states and 2835 transitions. [2020-10-23 20:20:53,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2020-10-23 20:20:53,138 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:20:53,138 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] [2020-10-23 20:20:53,139 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-23 20:20:53,139 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 20:20:53,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:20:53,139 INFO L82 PathProgramCache]: Analyzing trace with hash -1140372569, now seen corresponding path program 1 times [2020-10-23 20:20:53,140 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:20:53,140 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1484899537] [2020-10-23 20:20:53,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:20:53,448 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 75 [2020-10-23 20:20:53,849 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 69 [2020-10-23 20:20:54,188 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 72 [2020-10-23 20:20:54,590 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 78 [2020-10-23 20:20:54,702 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-10-23 20:20:54,976 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 72 [2020-10-23 20:20:55,346 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 69 [2020-10-23 20:20:55,801 WARN L193 SmtUtils]: Spent 351.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 76 [2020-10-23 20:20:55,909 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-23 20:20:56,216 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 68 [2020-10-23 20:20:56,630 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 69 [2020-10-23 20:20:56,988 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 68 [2020-10-23 20:20:57,361 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 72 [2020-10-23 20:20:57,762 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 76 [2020-10-23 20:20:57,868 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-23 20:20:58,188 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 77 [2020-10-23 20:20:58,292 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2020-10-23 20:20:58,611 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 75 [2020-10-23 20:20:58,718 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-23 20:20:59,378 WARN L193 SmtUtils]: Spent 601.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 166 [2020-10-23 20:20:59,963 WARN L193 SmtUtils]: Spent 544.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 167 [2020-10-23 20:21:00,532 WARN L193 SmtUtils]: Spent 535.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 167 [2020-10-23 20:21:01,097 WARN L193 SmtUtils]: Spent 533.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 166 [2020-10-23 20:21:01,666 WARN L193 SmtUtils]: Spent 537.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 166 [2020-10-23 20:21:02,243 WARN L193 SmtUtils]: Spent 538.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 167 [2020-10-23 20:21:02,830 WARN L193 SmtUtils]: Spent 559.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 167 [2020-10-23 20:21:03,374 WARN L193 SmtUtils]: Spent 508.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 166 [2020-10-23 20:21:03,378 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:21:04,216 WARN L193 SmtUtils]: Spent 698.00 ms on a formula simplification. DAG size of input: 218 DAG size of output: 217 [2020-10-23 20:21:05,055 WARN L193 SmtUtils]: Spent 696.00 ms on a formula simplification. DAG size of input: 218 DAG size of output: 217 [2020-10-23 20:21:05,883 WARN L193 SmtUtils]: Spent 692.00 ms on a formula simplification. DAG size of input: 218 DAG size of output: 217 [2020-10-23 20:21:06,722 WARN L193 SmtUtils]: Spent 679.00 ms on a formula simplification. DAG size of input: 218 DAG size of output: 217 [2020-10-23 20:21:06,735 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:21:07,534 WARN L193 SmtUtils]: Spent 685.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 221 [2020-10-23 20:21:08,337 WARN L193 SmtUtils]: Spent 688.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 221 [2020-10-23 20:21:09,145 WARN L193 SmtUtils]: Spent 700.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 221 [2020-10-23 20:21:09,992 WARN L193 SmtUtils]: Spent 711.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 221 [2020-10-23 20:21:10,000 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:21:10,597 WARN L193 SmtUtils]: Spent 581.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 167 [2020-10-23 20:21:11,170 WARN L193 SmtUtils]: Spent 553.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 167 [2020-10-23 20:21:11,749 WARN L193 SmtUtils]: Spent 561.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 167 [2020-10-23 20:21:12,308 WARN L193 SmtUtils]: Spent 527.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 167 [2020-10-23 20:21:12,896 WARN L193 SmtUtils]: Spent 567.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 167 [2020-10-23 20:21:13,481 WARN L193 SmtUtils]: Spent 567.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 167 [2020-10-23 20:21:14,051 WARN L193 SmtUtils]: Spent 553.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 167 [2020-10-23 20:21:14,632 WARN L193 SmtUtils]: Spent 560.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 167 [2020-10-23 20:21:14,636 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:21:15,427 WARN L193 SmtUtils]: Spent 693.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 221 [2020-10-23 20:21:16,236 WARN L193 SmtUtils]: Spent 724.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 221 [2020-10-23 20:21:17,027 WARN L193 SmtUtils]: Spent 688.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 221 [2020-10-23 20:21:17,816 WARN L193 SmtUtils]: Spent 707.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 221 [2020-10-23 20:21:17,829 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:21:18,614 WARN L193 SmtUtils]: Spent 687.00 ms on a formula simplification. DAG size of input: 222 DAG size of output: 221 [2020-10-23 20:21:19,426 WARN L193 SmtUtils]: Spent 716.00 ms on a formula simplification. DAG size of input: 222 DAG size of output: 221 [2020-10-23 20:21:20,179 WARN L193 SmtUtils]: Spent 681.00 ms on a formula simplification. DAG size of input: 222 DAG size of output: 221 [2020-10-23 20:21:20,950 WARN L193 SmtUtils]: Spent 676.00 ms on a formula simplification. DAG size of input: 222 DAG size of output: 221 [2020-10-23 20:21:20,960 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:21:21,572 WARN L193 SmtUtils]: Spent 595.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 170 [2020-10-23 20:21:22,158 WARN L193 SmtUtils]: Spent 567.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 170 [2020-10-23 20:21:22,775 WARN L193 SmtUtils]: Spent 596.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 170 [2020-10-23 20:21:23,383 WARN L193 SmtUtils]: Spent 583.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 170 [2020-10-23 20:21:23,974 WARN L193 SmtUtils]: Spent 572.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 170 [2020-10-23 20:21:24,584 WARN L193 SmtUtils]: Spent 582.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 170 [2020-10-23 20:21:25,178 WARN L193 SmtUtils]: Spent 573.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 170 [2020-10-23 20:21:25,775 WARN L193 SmtUtils]: Spent 578.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 170 [2020-10-23 20:21:25,777 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:21:26,576 WARN L193 SmtUtils]: Spent 684.00 ms on a formula simplification. DAG size of input: 217 DAG size of output: 214 [2020-10-23 20:21:27,335 WARN L193 SmtUtils]: Spent 671.00 ms on a formula simplification. DAG size of input: 217 DAG size of output: 214 [2020-10-23 20:21:28,094 WARN L193 SmtUtils]: Spent 681.00 ms on a formula simplification. DAG size of input: 217 DAG size of output: 214 [2020-10-23 20:21:28,848 WARN L193 SmtUtils]: Spent 679.00 ms on a formula simplification. DAG size of input: 217 DAG size of output: 214 [2020-10-23 20:21:28,860 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:21:29,655 WARN L193 SmtUtils]: Spent 703.00 ms on a formula simplification. DAG size of input: 221 DAG size of output: 220 [2020-10-23 20:21:30,429 WARN L193 SmtUtils]: Spent 686.00 ms on a formula simplification. DAG size of input: 221 DAG size of output: 220 [2020-10-23 20:21:31,198 WARN L193 SmtUtils]: Spent 694.00 ms on a formula simplification. DAG size of input: 221 DAG size of output: 220 [2020-10-23 20:21:31,958 WARN L193 SmtUtils]: Spent 678.00 ms on a formula simplification. DAG size of input: 221 DAG size of output: 220 [2020-10-23 20:21:31,964 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:21:32,748 WARN L193 SmtUtils]: Spent 696.00 ms on a formula simplification. DAG size of input: 216 DAG size of output: 213 [2020-10-23 20:21:33,512 WARN L193 SmtUtils]: Spent 668.00 ms on a formula simplification. DAG size of input: 216 DAG size of output: 213 [2020-10-23 20:21:34,245 WARN L193 SmtUtils]: Spent 663.00 ms on a formula simplification. DAG size of input: 216 DAG size of output: 213 [2020-10-23 20:21:34,970 WARN L193 SmtUtils]: Spent 658.00 ms on a formula simplification. DAG size of input: 216 DAG size of output: 213 [2020-10-23 20:21:34,980 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:21:35,812 WARN L193 SmtUtils]: Spent 761.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 217 [2020-10-23 20:21:36,598 WARN L193 SmtUtils]: Spent 715.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 217 [2020-10-23 20:21:37,410 WARN L193 SmtUtils]: Spent 710.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 217 [2020-10-23 20:21:38,191 WARN L193 SmtUtils]: Spent 710.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 217 [2020-10-23 20:21:38,198 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:21:38,790 WARN L193 SmtUtils]: Spent 577.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 170 [2020-10-23 20:21:39,412 WARN L193 SmtUtils]: Spent 602.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 170 [2020-10-23 20:21:40,002 WARN L193 SmtUtils]: Spent 572.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 170 [2020-10-23 20:21:40,606 WARN L193 SmtUtils]: Spent 587.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 170 [2020-10-23 20:21:41,205 WARN L193 SmtUtils]: Spent 576.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 170 [2020-10-23 20:21:41,818 WARN L193 SmtUtils]: Spent 590.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 170 [2020-10-23 20:21:42,471 WARN L193 SmtUtils]: Spent 635.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 170 [2020-10-23 20:21:43,064 WARN L193 SmtUtils]: Spent 575.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 170 [2020-10-23 20:21:43,068 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:21:43,697 WARN L193 SmtUtils]: Spent 613.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 165 [2020-10-23 20:21:44,332 WARN L193 SmtUtils]: Spent 615.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 165 [2020-10-23 20:21:44,936 WARN L193 SmtUtils]: Spent 586.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 164 [2020-10-23 20:21:45,571 WARN L193 SmtUtils]: Spent 616.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 165 [2020-10-23 20:21:46,235 WARN L193 SmtUtils]: Spent 641.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 164 [2020-10-23 20:21:46,874 WARN L193 SmtUtils]: Spent 619.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 164 [2020-10-23 20:21:47,515 WARN L193 SmtUtils]: Spent 620.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 164 [2020-10-23 20:21:48,158 WARN L193 SmtUtils]: Spent 605.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 165 [2020-10-23 20:21:48,161 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:21:48,795 WARN L193 SmtUtils]: Spent 620.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 167 [2020-10-23 20:21:49,436 WARN L193 SmtUtils]: Spent 624.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 166 [2020-10-23 20:21:50,078 WARN L193 SmtUtils]: Spent 622.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 166 [2020-10-23 20:21:50,719 WARN L193 SmtUtils]: Spent 600.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 166 [2020-10-23 20:21:51,374 WARN L193 SmtUtils]: Spent 636.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 167 [2020-10-23 20:21:52,017 WARN L193 SmtUtils]: Spent 625.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 166 [2020-10-23 20:21:52,652 WARN L193 SmtUtils]: Spent 616.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 167 [2020-10-23 20:21:53,295 WARN L193 SmtUtils]: Spent 620.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 167 [2020-10-23 20:21:53,299 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:21:53,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 20:21:53,678 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 20:21:54,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 20:21:54,084 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 20:21:54,302 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-23 20:21:54,302 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-23 20:21:54,305 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-23 20:21:54,357 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 08:21:54 BoogieIcfgContainer [2020-10-23 20:21:54,357 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 20:21:54,360 INFO L168 Benchmark]: Toolchain (without parser) took 125162.54 ms. Allocated memory was 125.8 MB in the beginning and 974.1 MB in the end (delta: 848.3 MB). Free memory was 101.7 MB in the beginning and 888.7 MB in the end (delta: -787.0 MB). Peak memory consumption was 619.3 MB. Max. memory is 8.0 GB. [2020-10-23 20:21:54,360 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 125.8 MB. Free memory is still 102.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 20:21:54,361 INFO L168 Benchmark]: CACSL2BoogieTranslator took 600.13 ms. Allocated memory is still 125.8 MB. Free memory was 100.9 MB in the beginning and 79.8 MB in the end (delta: 21.1 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. [2020-10-23 20:21:54,362 INFO L168 Benchmark]: Boogie Preprocessor took 131.97 ms. Allocated memory was 125.8 MB in the beginning and 156.2 MB in the end (delta: 30.4 MB). Free memory was 79.8 MB in the beginning and 139.0 MB in the end (delta: -59.2 MB). Peak memory consumption was 9.0 MB. Max. memory is 8.0 GB. [2020-10-23 20:21:54,363 INFO L168 Benchmark]: RCFGBuilder took 1808.82 ms. Allocated memory is still 156.2 MB. Free memory was 138.9 MB in the beginning and 130.2 MB in the end (delta: 8.7 MB). Peak memory consumption was 61.5 MB. Max. memory is 8.0 GB. [2020-10-23 20:21:54,363 INFO L168 Benchmark]: TraceAbstraction took 122607.14 ms. Allocated memory was 156.2 MB in the beginning and 974.1 MB in the end (delta: 817.9 MB). Free memory was 130.2 MB in the beginning and 888.7 MB in the end (delta: -758.5 MB). Peak memory consumption was 616.7 MB. Max. memory is 8.0 GB. [2020-10-23 20:21:54,365 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 125.8 MB. Free memory is still 102.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 600.13 ms. Allocated memory is still 125.8 MB. Free memory was 100.9 MB in the beginning and 79.8 MB in the end (delta: 21.1 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 131.97 ms. Allocated memory was 125.8 MB in the beginning and 156.2 MB in the end (delta: 30.4 MB). Free memory was 79.8 MB in the beginning and 139.0 MB in the end (delta: -59.2 MB). Peak memory consumption was 9.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1808.82 ms. Allocated memory is still 156.2 MB. Free memory was 138.9 MB in the beginning and 130.2 MB in the end (delta: 8.7 MB). Peak memory consumption was 61.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 122607.14 ms. Allocated memory was 156.2 MB in the beginning and 974.1 MB in the end (delta: 817.9 MB). Free memory was 130.2 MB in the beginning and 888.7 MB in the end (delta: -758.5 MB). Peak memory consumption was 616.7 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: [L99] int pumpRunning = 0; [L100] int systemActive = 1; [L297] int cleanupTimeShifts = 4; [L466] int switchedOnBeforeTS ; [L684] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L881] int waterLevel = 1; [L882] int methaneLevelCritical = 0; [L375] int retValue_acc ; [L376] int tmp ; [L380] FCALL select_helpers() [L381] FCALL select_features() [L382] CALL, EXPR valid_product() [L80] int retValue_acc ; [L83] retValue_acc = 1 [L84] return (retValue_acc); [L382] RET, EXPR valid_product() [L382] tmp = valid_product() [L384] COND TRUE \read(tmp) [L386] FCALL setup() [L387] CALL runTest() [L368] CALL __utac_acc__Specification5_spec__1() [L471] switchedOnBeforeTS = 0 [L368] RET __utac_acc__Specification5_spec__1() [L369] CALL test() [L399] int splverifierCounter ; [L400] int tmp ; [L401] int tmp___0 ; [L402] int tmp___1 ; [L403] int tmp___2 ; [L406] splverifierCounter = 0 [L408] COND TRUE 1 [L410] COND TRUE splverifierCounter < 4 [L416] tmp = __VERIFIER_nondet_int() [L418] COND TRUE \read(tmp) [L420] CALL waterRise() [L899] COND TRUE waterLevel < 2 [L900] waterLevel = waterLevel + 1 [L420] RET waterRise() [L426] tmp___0 = __VERIFIER_nondet_int() [L428] COND FALSE !(\read(tmp___0)) [L436] tmp___2 = __VERIFIER_nondet_int() [L438] COND TRUE \read(tmp___2) [L453] CALL timeShift() [L109] CALL __utac_acc__Specification5_spec__2() [L480] CALL, EXPR isPumpRunning() [L218] int retValue_acc ; [L221] retValue_acc = pumpRunning [L222] return (retValue_acc); [L480] RET, EXPR isPumpRunning() [L480] switchedOnBeforeTS = isPumpRunning() [L109] RET __utac_acc__Specification5_spec__2() [L111] COND FALSE !(\read(pumpRunning)) [L118] COND TRUE \read(systemActive) [L120] CALL processEnvironment() [L166] int tmp ; [L169] COND FALSE !(\read(pumpRunning)) [L184] CALL processEnvironment__wrappee__highWaterSensor() [L140] int tmp ; [L143] COND TRUE ! pumpRunning [L145] CALL, EXPR isHighWaterLevel() [L263] int retValue_acc ; [L264] int tmp ; [L265] int tmp___0 ; [L269] CALL, EXPR isHighWaterSensorDry() [L961] int retValue_acc ; [L964] COND FALSE !(waterLevel < 2) [L968] retValue_acc = 0 [L969] return (retValue_acc); [L269] RET, EXPR isHighWaterSensorDry() [L269] tmp = isHighWaterSensorDry() [L271] COND FALSE !(\read(tmp)) [L274] tmp___0 = 1 [L276] retValue_acc = tmp___0 [L277] return (retValue_acc); [L145] RET, EXPR isHighWaterLevel() [L145] tmp = isHighWaterLevel() [L147] COND TRUE \read(tmp) [L149] CALL activatePump() [L194] pumpRunning = 1 [L149] RET activatePump() [L184] RET processEnvironment__wrappee__highWaterSensor() [L120] RET processEnvironment() [L126] CALL __utac_acc__Specification5_spec__3() [L486] int tmp ; [L487] int tmp___0 ; [L491] CALL, EXPR getWaterLevel() [L952] int retValue_acc ; [L955] retValue_acc = waterLevel [L956] return (retValue_acc); [L491] RET, EXPR getWaterLevel() [L491] tmp = getWaterLevel() [L493] COND FALSE !(tmp != 2) [L126] RET __utac_acc__Specification5_spec__3() [L453] RET timeShift() [L408] COND TRUE 1 [L410] COND TRUE splverifierCounter < 4 [L416] tmp = __VERIFIER_nondet_int() [L418] COND FALSE !(\read(tmp)) [L426] tmp___0 = __VERIFIER_nondet_int() [L428] COND FALSE !(\read(tmp___0)) [L436] tmp___2 = __VERIFIER_nondet_int() [L438] COND TRUE \read(tmp___2) [L453] CALL timeShift() [L109] CALL __utac_acc__Specification5_spec__2() [L480] CALL, EXPR isPumpRunning() [L218] int retValue_acc ; [L221] retValue_acc = pumpRunning [L222] return (retValue_acc); [L480] RET, EXPR isPumpRunning() [L480] switchedOnBeforeTS = isPumpRunning() [L109] RET __utac_acc__Specification5_spec__2() [L111] COND TRUE \read(pumpRunning) [L113] CALL lowerWaterLevel() [L887] COND TRUE waterLevel > 0 [L888] waterLevel = waterLevel - 1 [L113] RET lowerWaterLevel() [L118] COND TRUE \read(systemActive) [L120] CALL processEnvironment() [L166] int tmp ; [L169] COND TRUE \read(pumpRunning) [L171] CALL, EXPR isMethaneAlarm() [L207] int retValue_acc ; [L211] CALL, EXPR isMethaneLevelCritical() [L920] int retValue_acc ; [L923] retValue_acc = methaneLevelCritical [L924] return (retValue_acc); [L211] RET, EXPR isMethaneLevelCritical() [L211] retValue_acc = isMethaneLevelCritical() [L213] return (retValue_acc); [L171] RET, EXPR isMethaneAlarm() [L171] tmp = isMethaneAlarm() [L173] COND FALSE !(\read(tmp)) [L179] CALL processEnvironment__wrappee__highWaterSensor() [L140] int tmp ; [L143] COND FALSE !(! pumpRunning) [L158] FCALL processEnvironment__wrappee__base() [L179] RET processEnvironment__wrappee__highWaterSensor() [L120] RET processEnvironment() [L126] CALL __utac_acc__Specification5_spec__3() [L486] int tmp ; [L487] int tmp___0 ; [L491] CALL, EXPR getWaterLevel() [L952] int retValue_acc ; [L955] retValue_acc = waterLevel [L956] return (retValue_acc); [L491] RET, EXPR getWaterLevel() [L491] tmp = getWaterLevel() [L493] COND TRUE tmp != 2 [L495] CALL, EXPR isPumpRunning() [L218] int retValue_acc ; [L221] retValue_acc = pumpRunning [L222] return (retValue_acc); [L495] RET, EXPR isPumpRunning() [L495] tmp___0 = isPumpRunning() [L497] COND TRUE \read(tmp___0) [L498] COND TRUE ! switchedOnBeforeTS [L500] CALL __automaton_fail() [L46] CALL reach_error() [L3] __assert_fail("0", "minepump_spec5_product39.cil.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 42 procedures, 650 locations, 5 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 122.4s, OverallIterations: 9, TraceHistogramMax: 3, AutomataDifference: 51.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2232 SDtfs, 5064 SDslu, 4734 SDs, 0 SdLazy, 9752 SolverSat, 1568 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 20.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 389 GetRequests, 243 SyntacticMatches, 4 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 814 ImplicationChecksByTransitivity, 26.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2499occurred 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, 1056 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...