/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_product49.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 20:21:27,634 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 20:21:27,637 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 20:21:27,678 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 20:21:27,679 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 20:21:27,680 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 20:21:27,682 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 20:21:27,684 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 20:21:27,686 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 20:21:27,687 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 20:21:27,689 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 20:21:27,690 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 20:21:27,691 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 20:21:27,692 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 20:21:27,694 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 20:21:27,695 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 20:21:27,696 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 20:21:27,697 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 20:21:27,699 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 20:21:27,702 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 20:21:27,704 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 20:21:27,706 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 20:21:27,707 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 20:21:27,708 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 20:21:27,739 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-23 20:21:27,739 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-23 20:21:27,739 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-23 20:21:27,741 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-23 20:21:27,749 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-23 20:21:27,751 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-23 20:21:27,757 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-23 20:21:27,759 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-23 20:21:27,760 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-23 20:21:27,760 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-23 20:21:27,763 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-23 20:21:27,763 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-23 20:21:27,764 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-23 20:21:27,764 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-23 20:21:27,764 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 20:21:27,765 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 20:21:27,766 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 20:21:27,767 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 20:21:27,780 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 20:21:27,780 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 20:21:27,782 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 20:21:27,782 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 20:21:27,782 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 20:21:27,783 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 20:21:27,783 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 20:21:27,783 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 20:21:27,783 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 20:21:27,783 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 20:21:27,784 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 20:21:27,784 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 20:21:27,784 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 20:21:27,784 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 20:21:27,784 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 20:21:27,785 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-23 20:21:27,785 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 20:21:27,785 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 20:21:27,785 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 20:21:27,786 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 20:21:27,786 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-23 20:21:27,786 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 20:21:27,786 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 20:21:28,134 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 20:21:28,167 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 20:21:28,169 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 20:21:28,170 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 20:21:28,171 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 20:21:28,172 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product49.cil.c [2020-10-23 20:21:28,245 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/487b35445/721cba21ea3e42feabfb52bed8349c74/FLAGc4a2fdd27 [2020-10-23 20:21:28,947 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 20:21:28,948 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec5_product49.cil.c [2020-10-23 20:21:28,961 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/487b35445/721cba21ea3e42feabfb52bed8349c74/FLAGc4a2fdd27 [2020-10-23 20:21:29,186 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/487b35445/721cba21ea3e42feabfb52bed8349c74 [2020-10-23 20:21:29,190 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 20:21:29,197 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 20:21:29,201 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 20:21:29,201 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 20:21:29,205 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 20:21:29,206 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:21:29" (1/1) ... [2020-10-23 20:21:29,210 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ee8b050 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:21:29, skipping insertion in model container [2020-10-23 20:21:29,210 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:21:29" (1/1) ... [2020-10-23 20:21:29,219 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 20:21:29,262 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 20:21:29,665 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 20:21:29,678 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 20:21:29,883 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 20:21:29,932 INFO L208 MainTranslator]: Completed translation [2020-10-23 20:21:29,933 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:21:29 WrapperNode [2020-10-23 20:21:29,933 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 20:21:29,934 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 20:21:29,934 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 20:21:29,935 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 20:21:29,948 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:21:29" (1/1) ... [2020-10-23 20:21:29,949 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:21:29" (1/1) ... [2020-10-23 20:21:29,968 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:21:29" (1/1) ... [2020-10-23 20:21:29,969 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:21:29" (1/1) ... [2020-10-23 20:21:30,015 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:21:29" (1/1) ... [2020-10-23 20:21:30,035 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:21:29" (1/1) ... [2020-10-23 20:21:30,043 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:21:29" (1/1) ... [2020-10-23 20:21:30,061 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 20:21:30,062 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 20:21:30,063 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 20:21:30,063 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 20:21:30,070 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:21:29" (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 20:21:30,162 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 20:21:30,163 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 20:21:30,163 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-10-23 20:21:30,163 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 20:21:30,163 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-10-23 20:21:30,163 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-10-23 20:21:30,163 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-10-23 20:21:30,164 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-10-23 20:21:30,164 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-10-23 20:21:30,164 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-10-23 20:21:30,164 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-10-23 20:21:30,164 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-10-23 20:21:30,164 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-10-23 20:21:30,165 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-10-23 20:21:30,165 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-10-23 20:21:30,165 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-10-23 20:21:30,165 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-10-23 20:21:30,165 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-10-23 20:21:30,166 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-10-23 20:21:30,166 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-10-23 20:21:30,166 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-10-23 20:21:30,166 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-10-23 20:21:30,166 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-10-23 20:21:30,166 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-10-23 20:21:30,167 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-10-23 20:21:30,167 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-10-23 20:21:30,167 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-10-23 20:21:30,167 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-10-23 20:21:30,167 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-10-23 20:21:30,167 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 20:21:30,167 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-10-23 20:21:30,168 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-10-23 20:21:30,168 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-10-23 20:21:30,168 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-10-23 20:21:30,168 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-10-23 20:21:30,168 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-10-23 20:21:30,168 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-10-23 20:21:30,169 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-10-23 20:21:30,169 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-10-23 20:21:30,169 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-10-23 20:21:30,169 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2020-10-23 20:21:30,169 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2020-10-23 20:21:30,169 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2020-10-23 20:21:30,170 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 20:21:30,170 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 20:21:30,170 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 20:21:30,170 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 20:21:30,170 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-23 20:21:30,170 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-10-23 20:21:30,170 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-10-23 20:21:30,171 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-10-23 20:21:30,171 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-10-23 20:21:30,171 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-10-23 20:21:30,171 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-10-23 20:21:30,171 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-10-23 20:21:30,171 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-10-23 20:21:30,171 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-10-23 20:21:30,171 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-10-23 20:21:30,172 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-10-23 20:21:30,172 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2020-10-23 20:21:30,172 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2020-10-23 20:21:30,172 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-10-23 20:21:30,172 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-10-23 20:21:30,172 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-10-23 20:21:30,172 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-10-23 20:21:30,173 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-10-23 20:21:30,173 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-10-23 20:21:30,173 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-10-23 20:21:30,173 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-10-23 20:21:30,173 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-10-23 20:21:30,173 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-10-23 20:21:30,173 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-10-23 20:21:30,173 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-10-23 20:21:30,174 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-10-23 20:21:30,174 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-10-23 20:21:30,174 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2020-10-23 20:21:30,174 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-10-23 20:21:30,174 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-10-23 20:21:30,174 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-10-23 20:21:30,174 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-10-23 20:21:30,175 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 20:21:30,175 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-10-23 20:21:30,175 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-23 20:21:30,175 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-23 20:21:30,175 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-10-23 20:21:30,175 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-23 20:21:30,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-23 20:21:30,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 20:21:30,176 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-23 20:21:30,176 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-10-23 20:21:30,176 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 20:21:30,176 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-10-23 20:21:30,176 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-10-23 20:21:30,177 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 20:21:30,177 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-10-23 20:21:30,177 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-10-23 20:21:30,177 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-10-23 20:21:30,177 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 20:21:30,177 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 20:21:30,177 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 20:21:31,524 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 20:21:31,524 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-23 20:21:31,527 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:21:31 BoogieIcfgContainer [2020-10-23 20:21:31,528 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 20:21:31,529 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 20:21:31,529 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 20:21:31,533 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 20:21:31,533 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 08:21:29" (1/3) ... [2020-10-23 20:21:31,534 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fbb413 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:21:31, skipping insertion in model container [2020-10-23 20:21:31,534 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:21:29" (2/3) ... [2020-10-23 20:21:31,534 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fbb413 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:21:31, skipping insertion in model container [2020-10-23 20:21:31,535 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:21:31" (3/3) ... [2020-10-23 20:21:31,536 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product49.cil.c [2020-10-23 20:21:31,548 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-23 20:21:31,554 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-10-23 20:21:31,567 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-23 20:21:31,591 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 20:21:31,592 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 20:21:31,592 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-10-23 20:21:31,592 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 20:21:31,592 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 20:21:31,592 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 20:21:31,592 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 20:21:31,593 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 20:21:31,616 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states. [2020-10-23 20:21:31,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-10-23 20:21:31,676 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:21:31,677 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 20:21:31,678 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 20:21:31,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:21:31,692 INFO L82 PathProgramCache]: Analyzing trace with hash 2095797626, now seen corresponding path program 1 times [2020-10-23 20:21:31,702 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:21:31,703 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1363429580] [2020-10-23 20:21:31,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:21:31,793 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:21:32,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:32,566 WARN L193 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:21:32,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:21:32,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:32,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 20:21:32,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:32,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 20:21:32,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:32,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 20:21:32,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:32,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 20:21:32,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:32,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 20:21:32,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:32,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-23 20:21:32,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:32,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:21:32,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:32,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-10-23 20:21:32,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:32,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-10-23 20:21:32,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:32,809 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 20:21:32,811 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1363429580] [2020-10-23 20:21:32,813 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:21:32,814 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-23 20:21:32,814 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152909031] [2020-10-23 20:21:32,820 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-23 20:21:32,821 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:21:32,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-23 20:21:32,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-23 20:21:32,838 INFO L87 Difference]: Start difference. First operand 334 states. Second operand 4 states. [2020-10-23 20:21:34,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:21:34,516 INFO L93 Difference]: Finished difference Result 517 states and 604 transitions. [2020-10-23 20:21:34,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-23 20:21:34,521 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 166 [2020-10-23 20:21:34,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:21:34,552 INFO L225 Difference]: With dead ends: 517 [2020-10-23 20:21:34,552 INFO L226 Difference]: Without dead ends: 324 [2020-10-23 20:21:34,564 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-23 20:21:34,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2020-10-23 20:21:34,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 280. [2020-10-23 20:21:34,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 280 states. [2020-10-23 20:21:34,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 304 transitions. [2020-10-23 20:21:34,793 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 304 transitions. Word has length 166 [2020-10-23 20:21:34,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:21:34,794 INFO L481 AbstractCegarLoop]: Abstraction has 280 states and 304 transitions. [2020-10-23 20:21:34,794 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-23 20:21:34,794 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 304 transitions. [2020-10-23 20:21:34,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-10-23 20:21:34,799 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:21:34,799 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 20:21:34,800 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 20:21:34,800 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 20:21:34,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:21:34,801 INFO L82 PathProgramCache]: Analyzing trace with hash 338610821, now seen corresponding path program 1 times [2020-10-23 20:21:34,801 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:21:34,802 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [254945620] [2020-10-23 20:21:34,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:21:34,808 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:21:34,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:35,280 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:21:35,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:21:35,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:35,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 20:21:35,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:35,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 20:21:35,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:35,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 20:21:35,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:35,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 20:21:35,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:35,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 20:21:35,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:35,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-23 20:21:35,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:35,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:21:35,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:35,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-10-23 20:21:35,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:35,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-23 20:21:35,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:35,450 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 20:21:35,451 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [254945620] [2020-10-23 20:21:35,451 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:21:35,451 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-23 20:21:35,451 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351096441] [2020-10-23 20:21:35,452 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-23 20:21:35,453 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:21:35,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-23 20:21:35,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-23 20:21:35,454 INFO L87 Difference]: Start difference. First operand 280 states and 304 transitions. Second operand 5 states. [2020-10-23 20:21:36,267 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:21:37,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:21:37,371 INFO L93 Difference]: Finished difference Result 443 states and 496 transitions. [2020-10-23 20:21:37,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-23 20:21:37,372 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 167 [2020-10-23 20:21:37,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:21:37,376 INFO L225 Difference]: With dead ends: 443 [2020-10-23 20:21:37,377 INFO L226 Difference]: Without dead ends: 313 [2020-10-23 20:21:37,379 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-23 20:21:37,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2020-10-23 20:21:37,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 270. [2020-10-23 20:21:37,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 270 states. [2020-10-23 20:21:37,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 291 transitions. [2020-10-23 20:21:37,489 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 291 transitions. Word has length 167 [2020-10-23 20:21:37,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:21:37,490 INFO L481 AbstractCegarLoop]: Abstraction has 270 states and 291 transitions. [2020-10-23 20:21:37,490 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-23 20:21:37,490 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 291 transitions. [2020-10-23 20:21:37,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-10-23 20:21:37,492 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:21:37,492 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 20:21:37,493 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 20:21:37,493 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 20:21:37,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:21:37,494 INFO L82 PathProgramCache]: Analyzing trace with hash -588187962, now seen corresponding path program 1 times [2020-10-23 20:21:37,494 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:21:37,494 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1414988802] [2020-10-23 20:21:37,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:21:37,499 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:21:37,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:37,960 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:21:37,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:21:38,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:38,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 20:21:38,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:38,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 20:21:38,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:38,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 20:21:38,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:38,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 20:21:38,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:38,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 20:21:38,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:38,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-23 20:21:38,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:38,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:21:38,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:38,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-10-23 20:21:38,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:38,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2020-10-23 20:21:38,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:38,245 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 20:21:38,246 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1414988802] [2020-10-23 20:21:38,247 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:21:38,247 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-23 20:21:38,248 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463231732] [2020-10-23 20:21:38,249 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-23 20:21:38,249 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:21:38,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-23 20:21:38,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-23 20:21:38,250 INFO L87 Difference]: Start difference. First operand 270 states and 291 transitions. Second operand 10 states. [2020-10-23 20:21:38,848 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:21:39,200 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 20:21:39,499 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-23 20:21:39,800 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:21:40,089 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 20:21:40,394 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:21:42,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:21:42,094 INFO L93 Difference]: Finished difference Result 463 states and 522 transitions. [2020-10-23 20:21:42,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-23 20:21:42,095 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 176 [2020-10-23 20:21:42,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:21:42,098 INFO L225 Difference]: With dead ends: 463 [2020-10-23 20:21:42,098 INFO L226 Difference]: Without dead ends: 313 [2020-10-23 20:21:42,100 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-10-23 20:21:42,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2020-10-23 20:21:42,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 270. [2020-10-23 20:21:42,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 270 states. [2020-10-23 20:21:42,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 290 transitions. [2020-10-23 20:21:42,221 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 290 transitions. Word has length 176 [2020-10-23 20:21:42,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:21:42,221 INFO L481 AbstractCegarLoop]: Abstraction has 270 states and 290 transitions. [2020-10-23 20:21:42,222 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-23 20:21:42,222 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 290 transitions. [2020-10-23 20:21:42,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-10-23 20:21:42,225 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:21:42,225 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] [2020-10-23 20:21:42,226 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-23 20:21:42,226 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 20:21:42,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:21:42,227 INFO L82 PathProgramCache]: Analyzing trace with hash -1145548717, now seen corresponding path program 1 times [2020-10-23 20:21:42,227 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:21:42,227 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [773228958] [2020-10-23 20:21:42,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:21:42,231 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:21:42,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:42,565 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:21:42,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:21:42,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:42,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 20:21:42,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:42,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 20:21:42,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:42,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 20:21:42,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:42,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 20:21:42,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:42,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 20:21:42,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:42,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-23 20:21:42,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:42,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:21:42,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:42,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-23 20:21:42,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:42,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:21:42,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:42,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:21:42,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:42,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2020-10-23 20:21:42,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:42,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2020-10-23 20:21:42,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:42,782 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 20:21:42,782 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [773228958] [2020-10-23 20:21:42,783 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:21:42,783 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-23 20:21:42,783 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776081148] [2020-10-23 20:21:42,785 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-23 20:21:42,786 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:21:42,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-23 20:21:42,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-23 20:21:42,787 INFO L87 Difference]: Start difference. First operand 270 states and 290 transitions. Second operand 7 states. [2020-10-23 20:21:43,411 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:21:45,216 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:21:45,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:21:45,861 INFO L93 Difference]: Finished difference Result 605 states and 693 transitions. [2020-10-23 20:21:45,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-23 20:21:45,861 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 189 [2020-10-23 20:21:45,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:21:45,865 INFO L225 Difference]: With dead ends: 605 [2020-10-23 20:21:45,866 INFO L226 Difference]: Without dead ends: 455 [2020-10-23 20:21:45,867 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2020-10-23 20:21:45,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 455 states. [2020-10-23 20:21:46,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 455 to 385. [2020-10-23 20:21:46,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 385 states. [2020-10-23 20:21:46,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 417 transitions. [2020-10-23 20:21:46,024 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 417 transitions. Word has length 189 [2020-10-23 20:21:46,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:21:46,024 INFO L481 AbstractCegarLoop]: Abstraction has 385 states and 417 transitions. [2020-10-23 20:21:46,025 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-23 20:21:46,025 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 417 transitions. [2020-10-23 20:21:46,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2020-10-23 20:21:46,028 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:21:46,028 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] [2020-10-23 20:21:46,028 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-23 20:21:46,029 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 20:21:46,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:21:46,029 INFO L82 PathProgramCache]: Analyzing trace with hash -684815179, now seen corresponding path program 1 times [2020-10-23 20:21:46,029 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:21:46,030 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1322524267] [2020-10-23 20:21:46,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:21:46,033 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:21:46,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:46,369 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:21:46,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:21:46,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:46,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 20:21:46,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:46,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 20:21:46,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:46,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 20:21:46,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:46,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 20:21:46,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:46,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 20:21:46,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:46,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-23 20:21:46,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:46,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:21:46,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:46,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-23 20:21:46,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:46,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:21:46,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:46,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:21:46,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:46,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 20:21:46,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:46,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 20:21:46,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:46,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2020-10-23 20:21:46,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:46,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2020-10-23 20:21:46,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:46,583 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 20:21:46,583 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1322524267] [2020-10-23 20:21:46,583 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:21:46,584 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-23 20:21:46,584 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778129249] [2020-10-23 20:21:46,584 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-23 20:21:46,584 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:21:46,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-23 20:21:46,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-23 20:21:46,586 INFO L87 Difference]: Start difference. First operand 385 states and 417 transitions. Second operand 10 states. [2020-10-23 20:21:47,139 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:21:48,041 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:21:48,340 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 20:21:49,320 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:21:49,673 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:21:49,984 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:21:50,503 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:21:50,804 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 20:21:51,107 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:21:51,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:21:51,796 INFO L93 Difference]: Finished difference Result 717 states and 813 transitions. [2020-10-23 20:21:51,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-23 20:21:51,796 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 213 [2020-10-23 20:21:51,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:21:51,800 INFO L225 Difference]: With dead ends: 717 [2020-10-23 20:21:51,800 INFO L226 Difference]: Without dead ends: 452 [2020-10-23 20:21:51,804 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2020-10-23 20:21:51,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2020-10-23 20:21:51,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 384. [2020-10-23 20:21:51,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 384 states. [2020-10-23 20:21:51,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 414 transitions. [2020-10-23 20:21:51,961 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 414 transitions. Word has length 213 [2020-10-23 20:21:51,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:21:51,962 INFO L481 AbstractCegarLoop]: Abstraction has 384 states and 414 transitions. [2020-10-23 20:21:51,962 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-23 20:21:51,962 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 414 transitions. [2020-10-23 20:21:51,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2020-10-23 20:21:51,965 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:21:51,965 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 20:21:51,966 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-23 20:21:51,966 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 20:21:51,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:21:51,967 INFO L82 PathProgramCache]: Analyzing trace with hash 410554953, now seen corresponding path program 1 times [2020-10-23 20:21:51,967 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:21:51,967 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [634910144] [2020-10-23 20:21:51,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:21:51,971 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:21:51,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:52,268 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:21:52,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:21:52,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:52,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 20:21:52,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:52,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 20:21:52,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:52,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 20:21:52,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:52,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 20:21:52,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:52,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 20:21:52,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:52,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-23 20:21:52,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:52,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:21:52,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:52,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-23 20:21:52,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:52,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:21:52,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:52,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:21:52,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:52,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 20:21:52,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:52,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 20:21:52,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:52,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2020-10-23 20:21:52,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:52,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2020-10-23 20:21:52,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:52,499 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 20:21:52,499 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [634910144] [2020-10-23 20:21:52,500 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:21:52,500 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-23 20:21:52,500 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809053308] [2020-10-23 20:21:52,501 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-23 20:21:52,501 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:21:52,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-23 20:21:52,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-23 20:21:52,502 INFO L87 Difference]: Start difference. First operand 384 states and 414 transitions. Second operand 10 states. [2020-10-23 20:21:53,930 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:21:54,244 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-23 20:21:54,564 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-10-23 20:21:54,865 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:21:55,186 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 20:21:55,469 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:21:56,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:21:56,416 INFO L93 Difference]: Finished difference Result 718 states and 810 transitions. [2020-10-23 20:21:56,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-23 20:21:56,417 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 214 [2020-10-23 20:21:56,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:21:56,421 INFO L225 Difference]: With dead ends: 718 [2020-10-23 20:21:56,421 INFO L226 Difference]: Without dead ends: 454 [2020-10-23 20:21:56,423 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2020-10-23 20:21:56,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2020-10-23 20:21:56,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 392. [2020-10-23 20:21:56,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 392 states. [2020-10-23 20:21:56,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 422 transitions. [2020-10-23 20:21:56,598 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 422 transitions. Word has length 214 [2020-10-23 20:21:56,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:21:56,599 INFO L481 AbstractCegarLoop]: Abstraction has 392 states and 422 transitions. [2020-10-23 20:21:56,599 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-23 20:21:56,599 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 422 transitions. [2020-10-23 20:21:56,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2020-10-23 20:21:56,602 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:21:56,603 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 20:21:56,603 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-23 20:21:56,603 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 20:21:56,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:21:56,604 INFO L82 PathProgramCache]: Analyzing trace with hash 824186345, now seen corresponding path program 1 times [2020-10-23 20:21:56,604 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:21:56,604 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [798416095] [2020-10-23 20:21:56,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:21:56,608 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:21:56,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:56,922 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:21:56,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:21:56,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:56,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 20:21:56,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:56,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 20:21:56,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:56,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 20:21:56,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:56,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 20:21:56,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:57,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 20:21:57,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:57,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-23 20:21:57,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:57,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:21:57,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:57,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-23 20:21:57,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:57,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:21:57,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:57,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:21:57,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:57,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 20:21:57,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:57,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 20:21:57,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:57,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2020-10-23 20:21:57,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:57,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2020-10-23 20:21:57,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:57,159 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 20:21:57,165 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [798416095] [2020-10-23 20:21:57,165 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:21:57,165 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-23 20:21:57,165 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9597962] [2020-10-23 20:21:57,166 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-23 20:21:57,166 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:21:57,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-23 20:21:57,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-10-23 20:21:57,167 INFO L87 Difference]: Start difference. First operand 392 states and 422 transitions. Second operand 13 states. [2020-10-23 20:21:57,833 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:21:58,119 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-23 20:21:58,405 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:21:58,686 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 20:21:58,959 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:21:59,987 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:22:00,295 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 20:22:00,614 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:22:00,936 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 20:22:01,231 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:22:02,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:22:02,452 INFO L93 Difference]: Finished difference Result 737 states and 837 transitions. [2020-10-23 20:22:02,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-23 20:22:02,453 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 214 [2020-10-23 20:22:02,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:22:02,457 INFO L225 Difference]: With dead ends: 737 [2020-10-23 20:22:02,457 INFO L226 Difference]: Without dead ends: 465 [2020-10-23 20:22:02,459 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=110, Invalid=442, Unknown=0, NotChecked=0, Total=552 [2020-10-23 20:22:02,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 465 states. [2020-10-23 20:22:02,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 465 to 398. [2020-10-23 20:22:02,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 398 states. [2020-10-23 20:22:02,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 428 transitions. [2020-10-23 20:22:02,604 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 428 transitions. Word has length 214 [2020-10-23 20:22:02,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:22:02,605 INFO L481 AbstractCegarLoop]: Abstraction has 398 states and 428 transitions. [2020-10-23 20:22:02,605 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-23 20:22:02,605 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 428 transitions. [2020-10-23 20:22:02,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2020-10-23 20:22:02,608 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:22:02,608 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 20:22:02,609 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-23 20:22:02,609 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:22:02,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:22:02,610 INFO L82 PathProgramCache]: Analyzing trace with hash 754668236, now seen corresponding path program 1 times [2020-10-23 20:22:02,610 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:22:02,610 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1388119398] [2020-10-23 20:22:02,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:22:02,613 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:22:02,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:02,921 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:22:02,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:22:02,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:02,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 20:22:02,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:02,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 20:22:02,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:02,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 20:22:02,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:02,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 20:22:02,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:02,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 20:22:02,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:02,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-23 20:22:02,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:02,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:22:02,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:02,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-23 20:22:02,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:03,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:22:03,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:03,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:22:03,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:03,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 20:22:03,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:03,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 20:22:03,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:03,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2020-10-23 20:22:03,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:03,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2020-10-23 20:22:03,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:03,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:22:03,133 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1388119398] [2020-10-23 20:22:03,133 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:22:03,134 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-23 20:22:03,134 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580062332] [2020-10-23 20:22:03,134 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-23 20:22:03,134 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:22:03,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-23 20:22:03,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-23 20:22:03,135 INFO L87 Difference]: Start difference. First operand 398 states and 428 transitions. Second operand 7 states. [2020-10-23 20:22:03,697 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:22:04,416 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:22:06,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:22:06,864 INFO L93 Difference]: Finished difference Result 989 states and 1144 transitions. [2020-10-23 20:22:06,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-23 20:22:06,865 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 214 [2020-10-23 20:22:06,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:22:06,870 INFO L225 Difference]: With dead ends: 989 [2020-10-23 20:22:06,871 INFO L226 Difference]: Without dead ends: 711 [2020-10-23 20:22:06,872 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 39 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2020-10-23 20:22:06,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 711 states. [2020-10-23 20:22:07,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 711 to 641. [2020-10-23 20:22:07,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 641 states. [2020-10-23 20:22:07,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 641 states to 641 states and 708 transitions. [2020-10-23 20:22:07,135 INFO L78 Accepts]: Start accepts. Automaton has 641 states and 708 transitions. Word has length 214 [2020-10-23 20:22:07,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:22:07,136 INFO L481 AbstractCegarLoop]: Abstraction has 641 states and 708 transitions. [2020-10-23 20:22:07,136 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-23 20:22:07,136 INFO L276 IsEmpty]: Start isEmpty. Operand 641 states and 708 transitions. [2020-10-23 20:22:07,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2020-10-23 20:22:07,144 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:22:07,144 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 20:22:07,147 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-23 20:22:07,147 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 20:22:07,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:22:07,148 INFO L82 PathProgramCache]: Analyzing trace with hash 1753414301, now seen corresponding path program 1 times [2020-10-23 20:22:07,148 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:22:07,148 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1532918645] [2020-10-23 20:22:07,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:22:07,153 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:22:07,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:07,629 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:22:07,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:22:07,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:07,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 20:22:07,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:07,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 20:22:07,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:07,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 20:22:07,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:07,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 20:22:07,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:07,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 20:22:07,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:07,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-23 20:22:07,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:07,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-23 20:22:07,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:07,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:22:07,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:07,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-10-23 20:22:07,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:07,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:22:07,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:07,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:22:07,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:07,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 20:22:07,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:07,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 20:22:07,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:07,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2020-10-23 20:22:07,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:07,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-10-23 20:22:07,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:07,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:22:07,889 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1532918645] [2020-10-23 20:22:07,889 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:22:07,889 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-23 20:22:07,889 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347364755] [2020-10-23 20:22:07,890 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-23 20:22:07,890 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:22:07,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-23 20:22:07,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-10-23 20:22:07,891 INFO L87 Difference]: Start difference. First operand 641 states and 708 transitions. Second operand 14 states. [2020-10-23 20:22:08,819 WARN L193 SmtUtils]: Spent 548.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 207 [2020-10-23 20:22:09,809 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:22:11,702 WARN L193 SmtUtils]: Spent 581.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 209 [2020-10-23 20:22:12,349 WARN L193 SmtUtils]: Spent 608.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 211 [2020-10-23 20:22:12,697 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:22:13,024 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 20:22:13,644 WARN L193 SmtUtils]: Spent 581.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 210 [2020-10-23 20:22:13,969 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:22:14,328 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 20:22:14,645 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:22:16,443 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:22:16,740 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:22:17,057 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:22:17,719 WARN L193 SmtUtils]: Spent 532.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 207 [2020-10-23 20:22:19,369 WARN L193 SmtUtils]: Spent 579.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 209 [2020-10-23 20:22:19,944 WARN L193 SmtUtils]: Spent 539.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 211 [2020-10-23 20:22:20,605 WARN L193 SmtUtils]: Spent 592.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 210 [2020-10-23 20:22:20,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:22:20,989 INFO L93 Difference]: Finished difference Result 1731 states and 1996 transitions. [2020-10-23 20:22:20,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-10-23 20:22:20,990 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 219 [2020-10-23 20:22:20,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:22:20,998 INFO L225 Difference]: With dead ends: 1731 [2020-10-23 20:22:20,999 INFO L226 Difference]: Without dead ends: 1313 [2020-10-23 20:22:21,001 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 633 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=510, Invalid=1940, Unknown=0, NotChecked=0, Total=2450 [2020-10-23 20:22:21,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1313 states. [2020-10-23 20:22:21,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1313 to 1134. [2020-10-23 20:22:21,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1134 states. [2020-10-23 20:22:21,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1134 states to 1134 states and 1244 transitions. [2020-10-23 20:22:21,520 INFO L78 Accepts]: Start accepts. Automaton has 1134 states and 1244 transitions. Word has length 219 [2020-10-23 20:22:21,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:22:21,520 INFO L481 AbstractCegarLoop]: Abstraction has 1134 states and 1244 transitions. [2020-10-23 20:22:21,521 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-23 20:22:21,521 INFO L276 IsEmpty]: Start isEmpty. Operand 1134 states and 1244 transitions. [2020-10-23 20:22:21,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2020-10-23 20:22:21,526 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:22:21,527 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:22:21,527 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-23 20:22:21,528 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:22:21,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:22:21,528 INFO L82 PathProgramCache]: Analyzing trace with hash 1553609477, now seen corresponding path program 1 times [2020-10-23 20:22:21,528 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:22:21,529 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1879406726] [2020-10-23 20:22:21,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:22:21,752 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 69 [2020-10-23 20:22:22,089 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 72 [2020-10-23 20:22:22,381 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 69 [2020-10-23 20:22:22,720 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 78 [2020-10-23 20:22:23,066 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 72 [2020-10-23 20:22:23,403 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 78 [2020-10-23 20:22:23,727 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 68 [2020-10-23 20:22:23,989 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 69 [2020-10-23 20:22:24,280 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 68 [2020-10-23 20:22:24,594 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 72 [2020-10-23 20:22:24,947 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 78 [2020-10-23 20:22:25,304 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 77 [2020-10-23 20:22:25,655 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 75 [2020-10-23 20:22:25,992 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 77 [2020-10-23 20:22:26,892 WARN L193 SmtUtils]: Spent 605.00 ms on a formula simplification. DAG size of input: 222 DAG size of output: 221 [2020-10-23 20:22:27,690 WARN L193 SmtUtils]: Spent 629.00 ms on a formula simplification. DAG size of input: 222 DAG size of output: 221 [2020-10-23 20:22:28,450 WARN L193 SmtUtils]: Spent 615.00 ms on a formula simplification. DAG size of input: 222 DAG size of output: 221 [2020-10-23 20:22:29,155 WARN L193 SmtUtils]: Spent 584.00 ms on a formula simplification. DAG size of input: 222 DAG size of output: 221 [2020-10-23 20:22:29,170 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:22:29,913 WARN L193 SmtUtils]: Spent 591.00 ms on a formula simplification. DAG size of input: 224 DAG size of output: 222 [2020-10-23 20:22:30,670 WARN L193 SmtUtils]: Spent 626.00 ms on a formula simplification. DAG size of input: 224 DAG size of output: 222 [2020-10-23 20:22:31,470 WARN L193 SmtUtils]: Spent 680.00 ms on a formula simplification. DAG size of input: 224 DAG size of output: 222 [2020-10-23 20:22:32,188 WARN L193 SmtUtils]: Spent 599.00 ms on a formula simplification. DAG size of input: 224 DAG size of output: 222 [2020-10-23 20:22:32,202 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:22:32,863 WARN L193 SmtUtils]: Spent 565.00 ms on a formula simplification. DAG size of input: 221 DAG size of output: 220 [2020-10-23 20:22:33,556 WARN L193 SmtUtils]: Spent 595.00 ms on a formula simplification. DAG size of input: 221 DAG size of output: 220 [2020-10-23 20:22:34,234 WARN L193 SmtUtils]: Spent 588.00 ms on a formula simplification. DAG size of input: 221 DAG size of output: 220 [2020-10-23 20:22:34,921 WARN L193 SmtUtils]: Spent 574.00 ms on a formula simplification. DAG size of input: 221 DAG size of output: 220 [2020-10-23 20:22:34,937 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:22:35,431 WARN L193 SmtUtils]: Spent 477.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 167 [2020-10-23 20:22:35,951 WARN L193 SmtUtils]: Spent 493.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 167 [2020-10-23 20:22:36,441 WARN L193 SmtUtils]: Spent 471.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 167 [2020-10-23 20:22:36,935 WARN L193 SmtUtils]: Spent 476.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 167 [2020-10-23 20:22:37,401 WARN L193 SmtUtils]: Spent 441.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 167 [2020-10-23 20:22:37,891 WARN L193 SmtUtils]: Spent 472.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 167 [2020-10-23 20:22:38,337 WARN L193 SmtUtils]: Spent 416.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 167 [2020-10-23 20:22:38,801 WARN L193 SmtUtils]: Spent 445.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 167 [2020-10-23 20:22:38,805 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:22:39,476 WARN L193 SmtUtils]: Spent 603.00 ms on a formula simplification. DAG size of input: 224 DAG size of output: 222 [2020-10-23 20:22:40,158 WARN L193 SmtUtils]: Spent 594.00 ms on a formula simplification. DAG size of input: 224 DAG size of output: 222 [2020-10-23 20:22:40,850 WARN L193 SmtUtils]: Spent 604.00 ms on a formula simplification. DAG size of input: 224 DAG size of output: 222 [2020-10-23 20:22:41,591 WARN L193 SmtUtils]: Spent 643.00 ms on a formula simplification. DAG size of input: 224 DAG size of output: 222 [2020-10-23 20:22:41,597 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:22:42,104 WARN L193 SmtUtils]: Spent 476.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 167 [2020-10-23 20:22:42,611 WARN L193 SmtUtils]: Spent 488.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 167 [2020-10-23 20:22:43,106 WARN L193 SmtUtils]: Spent 478.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 167 [2020-10-23 20:22:43,598 WARN L193 SmtUtils]: Spent 460.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 167 [2020-10-23 20:22:44,096 WARN L193 SmtUtils]: Spent 467.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 167 [2020-10-23 20:22:44,569 WARN L193 SmtUtils]: Spent 442.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 167 [2020-10-23 20:22:45,037 WARN L193 SmtUtils]: Spent 450.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 167 [2020-10-23 20:22:45,499 WARN L193 SmtUtils]: Spent 445.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 167 [2020-10-23 20:22:45,502 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:22:46,164 WARN L193 SmtUtils]: Spent 584.00 ms on a formula simplification. DAG size of input: 216 DAG size of output: 213 [2020-10-23 20:22:46,815 WARN L193 SmtUtils]: Spent 550.00 ms on a formula simplification. DAG size of input: 216 DAG size of output: 213 [2020-10-23 20:22:47,459 WARN L193 SmtUtils]: Spent 554.00 ms on a formula simplification. DAG size of input: 216 DAG size of output: 213 [2020-10-23 20:22:48,103 WARN L193 SmtUtils]: Spent 572.00 ms on a formula simplification. DAG size of input: 216 DAG size of output: 213 [2020-10-23 20:22:48,113 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:22:48,763 WARN L193 SmtUtils]: Spent 577.00 ms on a formula simplification. DAG size of input: 217 DAG size of output: 216 [2020-10-23 20:22:49,442 WARN L193 SmtUtils]: Spent 579.00 ms on a formula simplification. DAG size of input: 217 DAG size of output: 216 [2020-10-23 20:22:50,143 WARN L193 SmtUtils]: Spent 624.00 ms on a formula simplification. DAG size of input: 217 DAG size of output: 216 [2020-10-23 20:22:50,780 WARN L193 SmtUtils]: Spent 567.00 ms on a formula simplification. DAG size of input: 217 DAG size of output: 216 [2020-10-23 20:22:50,794 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:22:51,440 WARN L193 SmtUtils]: Spent 581.00 ms on a formula simplification. DAG size of input: 217 DAG size of output: 214 [2020-10-23 20:22:52,125 WARN L193 SmtUtils]: Spent 609.00 ms on a formula simplification. DAG size of input: 217 DAG size of output: 214 [2020-10-23 20:22:52,749 WARN L193 SmtUtils]: Spent 560.00 ms on a formula simplification. DAG size of input: 217 DAG size of output: 214 [2020-10-23 20:22:53,436 WARN L193 SmtUtils]: Spent 621.00 ms on a formula simplification. DAG size of input: 217 DAG size of output: 214 [2020-10-23 20:22:53,441 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:22:54,128 WARN L193 SmtUtils]: Spent 613.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 217 [2020-10-23 20:22:54,826 WARN L193 SmtUtils]: Spent 600.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 217 [2020-10-23 20:22:55,505 WARN L193 SmtUtils]: Spent 602.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 217 [2020-10-23 20:22:56,205 WARN L193 SmtUtils]: Spent 610.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 217 [2020-10-23 20:22:56,211 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:22:56,692 WARN L193 SmtUtils]: Spent 467.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 167 [2020-10-23 20:22:57,178 WARN L193 SmtUtils]: Spent 470.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 167 [2020-10-23 20:22:57,679 WARN L193 SmtUtils]: Spent 471.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 167 [2020-10-23 20:22:58,199 WARN L193 SmtUtils]: Spent 503.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 167 [2020-10-23 20:22:58,683 WARN L193 SmtUtils]: Spent 457.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 167 [2020-10-23 20:22:59,180 WARN L193 SmtUtils]: Spent 478.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 167 [2020-10-23 20:22:59,655 WARN L193 SmtUtils]: Spent 459.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 167 [2020-10-23 20:23:00,137 WARN L193 SmtUtils]: Spent 465.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 167 [2020-10-23 20:23:00,139 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:23:00,617 WARN L193 SmtUtils]: Spent 465.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 164 [2020-10-23 20:23:01,085 WARN L193 SmtUtils]: Spent 451.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 163 [2020-10-23 20:23:01,557 WARN L193 SmtUtils]: Spent 452.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 163 [2020-10-23 20:23:02,032 WARN L193 SmtUtils]: Spent 459.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 164 [2020-10-23 20:23:02,520 WARN L193 SmtUtils]: Spent 463.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 164 [2020-10-23 20:23:02,995 WARN L193 SmtUtils]: Spent 458.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 163 [2020-10-23 20:23:03,462 WARN L193 SmtUtils]: Spent 450.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 163 [2020-10-23 20:23:03,930 WARN L193 SmtUtils]: Spent 450.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 164 [2020-10-23 20:23:03,932 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:23:04,430 WARN L193 SmtUtils]: Spent 468.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 167 [2020-10-23 20:23:04,909 WARN L193 SmtUtils]: Spent 459.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 167 [2020-10-23 20:23:05,381 WARN L193 SmtUtils]: Spent 458.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 166 [2020-10-23 20:23:05,859 WARN L193 SmtUtils]: Spent 462.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 166 [2020-10-23 20:23:06,352 WARN L193 SmtUtils]: Spent 466.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 167 [2020-10-23 20:23:06,833 WARN L193 SmtUtils]: Spent 465.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 166 [2020-10-23 20:23:07,325 WARN L193 SmtUtils]: Spent 477.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 167 [2020-10-23 20:23:07,817 WARN L193 SmtUtils]: Spent 475.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 166 [2020-10-23 20:23:07,820 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:23:08,295 WARN L193 SmtUtils]: Spent 458.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 164 [2020-10-23 20:23:08,785 WARN L193 SmtUtils]: Spent 472.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 164 [2020-10-23 20:23:09,277 WARN L193 SmtUtils]: Spent 475.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 164 [2020-10-23 20:23:09,762 WARN L193 SmtUtils]: Spent 469.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 163 [2020-10-23 20:23:10,233 WARN L193 SmtUtils]: Spent 438.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 163 [2020-10-23 20:23:10,718 WARN L193 SmtUtils]: Spent 468.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 163 [2020-10-23 20:23:11,190 WARN L193 SmtUtils]: Spent 456.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 164 [2020-10-23 20:23:11,660 WARN L193 SmtUtils]: Spent 455.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 163 [2020-10-23 20:23:11,663 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:23:11,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 20:23:11,902 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 20:23:12,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 20:23:12,238 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 20:23:12,501 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-23 20:23:12,501 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-23 20:23:12,505 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-23 20:23:12,563 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 08:23:12 BoogieIcfgContainer [2020-10-23 20:23:12,563 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 20:23:12,566 INFO L168 Benchmark]: Toolchain (without parser) took 103372.89 ms. Allocated memory was 154.1 MB in the beginning and 692.1 MB in the end (delta: 537.9 MB). Free memory was 111.1 MB in the beginning and 293.8 MB in the end (delta: -182.7 MB). Peak memory consumption was 355.8 MB. Max. memory is 8.0 GB. [2020-10-23 20:23:12,567 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 154.1 MB. Free memory is still 128.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 20:23:12,567 INFO L168 Benchmark]: CACSL2BoogieTranslator took 732.97 ms. Allocated memory is still 154.1 MB. Free memory was 110.6 MB in the beginning and 129.7 MB in the end (delta: -19.1 MB). Peak memory consumption was 18.9 MB. Max. memory is 8.0 GB. [2020-10-23 20:23:12,568 INFO L168 Benchmark]: Boogie Preprocessor took 127.15 ms. Allocated memory is still 154.1 MB. Free memory was 129.7 MB in the beginning and 126.1 MB in the end (delta: 3.7 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-10-23 20:23:12,568 INFO L168 Benchmark]: RCFGBuilder took 1465.28 ms. Allocated memory is still 154.1 MB. Free memory was 126.1 MB in the beginning and 73.1 MB in the end (delta: 53.0 MB). Peak memory consumption was 55.1 MB. Max. memory is 8.0 GB. [2020-10-23 20:23:12,569 INFO L168 Benchmark]: TraceAbstraction took 101033.88 ms. Allocated memory was 154.1 MB in the beginning and 692.1 MB in the end (delta: 537.9 MB). Free memory was 72.5 MB in the beginning and 293.8 MB in the end (delta: -221.3 MB). Peak memory consumption was 316.1 MB. Max. memory is 8.0 GB. [2020-10-23 20:23:12,571 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 154.1 MB. Free memory is still 128.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 732.97 ms. Allocated memory is still 154.1 MB. Free memory was 110.6 MB in the beginning and 129.7 MB in the end (delta: -19.1 MB). Peak memory consumption was 18.9 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 127.15 ms. Allocated memory is still 154.1 MB. Free memory was 129.7 MB in the beginning and 126.1 MB in the end (delta: 3.7 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1465.28 ms. Allocated memory is still 154.1 MB. Free memory was 126.1 MB in the beginning and 73.1 MB in the end (delta: 53.0 MB). Peak memory consumption was 55.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 101033.88 ms. Allocated memory was 154.1 MB in the beginning and 692.1 MB in the end (delta: 537.9 MB). Free memory was 72.5 MB in the beginning and 293.8 MB in the end (delta: -221.3 MB). Peak memory consumption was 316.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L52] int pumpRunning = 0; [L53] int systemActive = 1; [L323] int waterLevel = 1; [L324] int methaneLevelCritical = 0; [L435] int cleanupTimeShifts = 4; [L740] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L937] int switchedOnBeforeTS ; [L513] int retValue_acc ; [L514] int tmp ; [L518] FCALL select_helpers() [L519] FCALL select_features() [L520] CALL, EXPR valid_product() [L562] int retValue_acc ; [L565] retValue_acc = 1 [L566] return (retValue_acc); [L520] RET, EXPR valid_product() [L520] tmp = valid_product() [L522] COND TRUE \read(tmp) [L524] FCALL setup() [L525] CALL runTest() [L503] CALL __utac_acc__Specification5_spec__1() [L942] switchedOnBeforeTS = 0 [L503] RET __utac_acc__Specification5_spec__1() [L504] CALL test() [L258] int splverifierCounter ; [L259] int tmp ; [L260] int tmp___0 ; [L261] int tmp___1 ; [L262] int tmp___2 ; [L265] splverifierCounter = 0 [L267] COND TRUE 1 [L269] COND TRUE splverifierCounter < 4 [L275] tmp = __VERIFIER_nondet_int() [L277] COND TRUE \read(tmp) [L279] CALL waterRise() [L341] COND TRUE waterLevel < 2 [L342] waterLevel = waterLevel + 1 [L279] RET waterRise() [L285] tmp___0 = __VERIFIER_nondet_int() [L287] COND FALSE !(\read(tmp___0)) [L295] tmp___2 = __VERIFIER_nondet_int() [L297] COND TRUE \read(tmp___2) [L310] CALL timeShift() [L62] CALL __utac_acc__Specification5_spec__2() [L951] CALL, EXPR isPumpRunning() [L171] int retValue_acc ; [L174] retValue_acc = pumpRunning [L175] return (retValue_acc); [L951] RET, EXPR isPumpRunning() [L951] switchedOnBeforeTS = isPumpRunning() [L62] RET __utac_acc__Specification5_spec__2() [L64] COND FALSE !(\read(pumpRunning)) [L71] COND TRUE \read(systemActive) [L73] CALL processEnvironment() [L119] int tmp ; [L122] COND FALSE !(\read(pumpRunning)) [L137] CALL processEnvironment__wrappee__highWaterSensor() [L93] int tmp ; [L96] COND TRUE ! pumpRunning [L98] CALL, EXPR isHighWaterLevel() [L216] int retValue_acc ; [L217] int tmp ; [L218] int tmp___0 ; [L222] CALL, EXPR isHighWaterSensorDry() [L403] int retValue_acc ; [L406] COND FALSE !(waterLevel < 2) [L410] retValue_acc = 0 [L411] return (retValue_acc); [L222] RET, EXPR isHighWaterSensorDry() [L222] tmp = isHighWaterSensorDry() [L224] COND FALSE !(\read(tmp)) [L227] tmp___0 = 1 [L229] retValue_acc = tmp___0 [L230] return (retValue_acc); [L98] RET, EXPR isHighWaterLevel() [L98] tmp = isHighWaterLevel() [L100] COND TRUE \read(tmp) [L102] CALL activatePump() [L147] pumpRunning = 1 [L102] RET activatePump() [L137] RET processEnvironment__wrappee__highWaterSensor() [L73] RET processEnvironment() [L79] CALL __utac_acc__Specification5_spec__3() [L957] int tmp ; [L958] int tmp___0 ; [L962] CALL, EXPR getWaterLevel() [L394] int retValue_acc ; [L397] retValue_acc = waterLevel [L398] return (retValue_acc); [L962] RET, EXPR getWaterLevel() [L962] tmp = getWaterLevel() [L964] COND FALSE !(tmp != 2) [L79] RET __utac_acc__Specification5_spec__3() [L310] RET timeShift() [L267] COND TRUE 1 [L269] COND TRUE splverifierCounter < 4 [L275] tmp = __VERIFIER_nondet_int() [L277] COND FALSE !(\read(tmp)) [L285] tmp___0 = __VERIFIER_nondet_int() [L287] COND FALSE !(\read(tmp___0)) [L295] tmp___2 = __VERIFIER_nondet_int() [L297] COND TRUE \read(tmp___2) [L310] CALL timeShift() [L62] CALL __utac_acc__Specification5_spec__2() [L951] CALL, EXPR isPumpRunning() [L171] int retValue_acc ; [L174] retValue_acc = pumpRunning [L175] return (retValue_acc); [L951] RET, EXPR isPumpRunning() [L951] switchedOnBeforeTS = isPumpRunning() [L62] RET __utac_acc__Specification5_spec__2() [L64] COND TRUE \read(pumpRunning) [L66] CALL lowerWaterLevel() [L329] COND TRUE waterLevel > 0 [L330] waterLevel = waterLevel - 1 [L66] RET lowerWaterLevel() [L71] COND TRUE \read(systemActive) [L73] CALL processEnvironment() [L119] int tmp ; [L122] COND TRUE \read(pumpRunning) [L124] CALL, EXPR isLowWaterLevel() [L235] int retValue_acc ; [L236] int tmp ; [L237] int tmp___0 ; [L241] CALL, EXPR isLowWaterSensorDry() [L417] int retValue_acc ; [L420] retValue_acc = waterLevel == 0 [L421] return (retValue_acc); [L241] RET, EXPR isLowWaterSensorDry() [L241] tmp = isLowWaterSensorDry() [L243] COND TRUE \read(tmp) [L244] tmp___0 = 0 [L248] retValue_acc = tmp___0 [L249] return (retValue_acc); [L124] RET, EXPR isLowWaterLevel() [L124] tmp = isLowWaterLevel() [L126] COND FALSE !(\read(tmp)) [L132] CALL processEnvironment__wrappee__highWaterSensor() [L93] int tmp ; [L96] COND FALSE !(! pumpRunning) [L111] FCALL processEnvironment__wrappee__base() [L132] RET processEnvironment__wrappee__highWaterSensor() [L73] RET processEnvironment() [L79] CALL __utac_acc__Specification5_spec__3() [L957] int tmp ; [L958] int tmp___0 ; [L962] CALL, EXPR getWaterLevel() [L394] int retValue_acc ; [L397] retValue_acc = waterLevel [L398] return (retValue_acc); [L962] RET, EXPR getWaterLevel() [L962] tmp = getWaterLevel() [L964] COND TRUE tmp != 2 [L966] CALL, EXPR isPumpRunning() [L171] int retValue_acc ; [L174] retValue_acc = pumpRunning [L175] return (retValue_acc); [L966] RET, EXPR isPumpRunning() [L966] tmp___0 = isPumpRunning() [L968] COND TRUE \read(tmp___0) [L969] COND TRUE ! switchedOnBeforeTS [L971] CALL __automaton_fail() [L430] CALL reach_error() [L3] __assert_fail("0", "minepump_spec5_product49.cil.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 43 procedures, 663 locations, 5 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 100.9s, OverallIterations: 10, TraceHistogramMax: 3, AutomataDifference: 41.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2491 SDtfs, 5331 SDslu, 4784 SDs, 0 SdLazy, 9492 SolverSat, 1449 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 17.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 444 GetRequests, 282 SyntacticMatches, 5 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 847 ImplicationChecksByTransitivity, 21.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1134occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.8s AutomataMinimizationTime, 9 MinimizatonAttempts, 646 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...