/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_spec3_product59.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 19:00:20,807 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 19:00:20,811 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 19:00:20,863 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 19:00:20,864 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 19:00:20,868 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 19:00:20,883 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 19:00:20,890 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 19:00:20,893 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 19:00:20,899 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 19:00:20,900 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 19:00:20,902 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 19:00:20,902 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 19:00:20,904 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 19:00:20,906 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 19:00:20,908 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 19:00:20,911 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 19:00:20,912 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 19:00:20,918 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 19:00:20,923 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 19:00:20,926 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 19:00:20,927 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 19:00:20,928 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 19:00:20,931 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 19:00:20,939 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-21 19:00:20,940 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-21 19:00:20,940 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-21 19:00:20,941 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-21 19:00:20,942 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-21 19:00:20,944 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-21 19:00:20,944 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-21 19:00:20,945 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-21 19:00:20,947 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-21 19:00:20,947 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-21 19:00:20,948 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-21 19:00:20,948 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-21 19:00:20,949 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-21 19:00:20,949 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-21 19:00:20,950 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 19:00:20,950 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 19:00:20,951 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 19:00:20,952 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-21 19:00:20,972 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 19:00:20,973 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 19:00:20,976 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 19:00:20,977 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 19:00:20,977 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 19:00:20,977 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 19:00:20,977 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 19:00:20,977 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 19:00:20,978 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 19:00:20,978 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 19:00:20,979 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 19:00:20,979 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 19:00:20,979 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 19:00:20,980 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 19:00:20,980 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 19:00:20,980 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 19:00:20,980 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 19:00:20,980 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 19:00:20,981 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 19:00:20,981 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 19:00:20,981 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 19:00:20,981 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 19:00:20,981 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 19:00:21,341 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 19:00:21,365 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 19:00:21,368 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 19:00:21,369 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 19:00:21,370 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 19:00:21,371 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product59.cil.c [2021-02-21 19:00:21,449 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5db0019ce/5e3743f021de4735aa9e3b78afbb6ff6/FLAG1b509306e [2021-02-21 19:00:22,038 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 19:00:22,038 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product59.cil.c [2021-02-21 19:00:22,052 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5db0019ce/5e3743f021de4735aa9e3b78afbb6ff6/FLAG1b509306e [2021-02-21 19:00:22,341 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5db0019ce/5e3743f021de4735aa9e3b78afbb6ff6 [2021-02-21 19:00:22,348 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 19:00:22,363 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 19:00:22,369 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 19:00:22,370 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 19:00:22,374 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 19:00:22,375 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 07:00:22" (1/1) ... [2021-02-21 19:00:22,377 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2638e787 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:00:22, skipping insertion in model container [2021-02-21 19:00:22,377 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 07:00:22" (1/1) ... [2021-02-21 19:00:22,387 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 19:00:22,464 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 19:00:22,778 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product59.cil.c[14819,14832] [2021-02-21 19:00:22,800 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 19:00:22,811 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 19:00:22,882 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product59.cil.c[14819,14832] [2021-02-21 19:00:22,910 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 19:00:22,964 INFO L208 MainTranslator]: Completed translation [2021-02-21 19:00:22,965 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:00:22 WrapperNode [2021-02-21 19:00:22,965 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 19:00:22,967 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 19:00:22,967 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 19:00:22,967 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 19:00:22,979 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:00:22" (1/1) ... [2021-02-21 19:00:22,980 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:00:22" (1/1) ... [2021-02-21 19:00:22,999 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:00:22" (1/1) ... [2021-02-21 19:00:22,999 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:00:22" (1/1) ... [2021-02-21 19:00:23,032 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:00:22" (1/1) ... [2021-02-21 19:00:23,043 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:00:22" (1/1) ... [2021-02-21 19:00:23,064 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:00:22" (1/1) ... [2021-02-21 19:00:23,073 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 19:00:23,074 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 19:00:23,074 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 19:00:23,074 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 19:00:23,075 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:00:22" (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 [2021-02-21 19:00:23,171 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 19:00:23,171 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 19:00:23,171 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-21 19:00:23,171 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 19:00:23,171 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-21 19:00:23,171 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-21 19:00:23,172 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-21 19:00:23,172 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-21 19:00:23,172 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-21 19:00:23,172 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-21 19:00:23,172 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-21 19:00:23,172 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-21 19:00:23,173 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-21 19:00:23,173 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-21 19:00:23,173 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-21 19:00:23,173 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-21 19:00:23,173 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2021-02-21 19:00:23,173 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2021-02-21 19:00:23,174 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-21 19:00:23,174 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-21 19:00:23,174 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-21 19:00:23,174 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-21 19:00:23,174 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 19:00:23,174 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-21 19:00:23,175 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-21 19:00:23,175 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-21 19:00:23,175 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-21 19:00:23,175 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2021-02-21 19:00:23,175 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-21 19:00:23,175 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-21 19:00:23,175 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-21 19:00:23,176 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-02-21 19:00:23,176 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2021-02-21 19:00:23,176 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-21 19:00:23,176 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2021-02-21 19:00:23,176 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-21 19:00:23,176 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-21 19:00:23,177 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-21 19:00:23,177 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-21 19:00:23,177 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-21 19:00:23,177 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2021-02-21 19:00:23,177 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2021-02-21 19:00:23,177 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2021-02-21 19:00:23,178 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 19:00:23,178 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 19:00:23,178 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 19:00:23,178 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 19:00:23,178 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-21 19:00:23,178 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-21 19:00:23,178 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-21 19:00:23,179 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-21 19:00:23,179 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-21 19:00:23,179 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-21 19:00:23,179 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-21 19:00:23,179 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 19:00:23,179 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-21 19:00:23,179 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-21 19:00:23,180 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 19:00:23,180 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-21 19:00:23,180 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-21 19:00:23,180 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 19:00:23,180 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-21 19:00:23,180 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-21 19:00:23,181 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-21 19:00:23,181 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-21 19:00:23,181 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-21 19:00:23,181 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-21 19:00:23,181 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-21 19:00:23,182 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-21 19:00:23,182 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-21 19:00:23,182 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2021-02-21 19:00:23,182 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2021-02-21 19:00:23,182 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-21 19:00:23,182 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-21 19:00:23,183 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-21 19:00:23,183 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-21 19:00:23,183 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-21 19:00:23,183 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-21 19:00:23,183 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-21 19:00:23,183 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-21 19:00:23,183 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-21 19:00:23,184 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-21 19:00:23,184 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 19:00:23,184 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-21 19:00:23,184 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-21 19:00:23,184 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-21 19:00:23,184 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2021-02-21 19:00:23,184 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2021-02-21 19:00:23,185 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-21 19:00:23,185 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-21 19:00:23,185 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-21 19:00:23,185 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-02-21 19:00:23,185 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2021-02-21 19:00:23,185 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2021-02-21 19:00:23,185 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2021-02-21 19:00:23,186 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2021-02-21 19:00:23,186 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-21 19:00:23,186 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 19:00:23,186 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 19:00:23,186 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 19:00:24,319 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 19:00:24,320 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-21 19:00:24,323 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 07:00:24 BoogieIcfgContainer [2021-02-21 19:00:24,323 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 19:00:24,325 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 19:00:24,325 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 19:00:24,328 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 19:00:24,328 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 07:00:22" (1/3) ... [2021-02-21 19:00:24,329 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2981c781 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 07:00:24, skipping insertion in model container [2021-02-21 19:00:24,329 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:00:22" (2/3) ... [2021-02-21 19:00:24,330 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2981c781 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 07:00:24, skipping insertion in model container [2021-02-21 19:00:24,330 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 07:00:24" (3/3) ... [2021-02-21 19:00:24,332 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product59.cil.c [2021-02-21 19:00:24,338 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 19:00:24,345 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 19:00:24,364 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 19:00:24,387 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 19:00:24,387 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 19:00:24,387 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 19:00:24,387 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 19:00:24,387 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 19:00:24,388 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 19:00:24,388 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 19:00:24,388 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 19:00:24,410 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states. [2021-02-21 19:00:24,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-02-21 19:00:24,432 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:00:24,433 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 19:00:24,433 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:00:24,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:00:24,440 INFO L82 PathProgramCache]: Analyzing trace with hash 1221408167, now seen corresponding path program 1 times [2021-02-21 19:00:24,448 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:00:24,449 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1868726564] [2021-02-21 19:00:24,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:00:24,531 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:00:24,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:24,996 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:24,997 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:24,998 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:25,000 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:25,318 WARN L202 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:00:25,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:00:25,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:25,434 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:25,435 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:25,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:00:25,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:25,454 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:25,454 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:25,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:00:25,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:25,457 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:25,457 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:25,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:00:25,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:25,461 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:25,461 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:25,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:00:25,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:25,464 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:25,464 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:25,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-21 19:00:25,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:25,467 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:25,468 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:25,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-21 19:00:25,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:25,471 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:25,472 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:25,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-02-21 19:00:25,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:25,475 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:25,475 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:25,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 19:00:25,518 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1868726564] [2021-02-21 19:00:25,520 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:00:25,520 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-21 19:00:25,521 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938085489] [2021-02-21 19:00:25,539 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-21 19:00:25,539 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:00:25,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-21 19:00:25,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 19:00:25,555 INFO L87 Difference]: Start difference. First operand 352 states. Second operand 3 states. [2021-02-21 19:00:27,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:00:27,130 INFO L93 Difference]: Finished difference Result 567 states and 669 transitions. [2021-02-21 19:00:27,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-21 19:00:27,132 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 158 [2021-02-21 19:00:27,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:00:27,160 INFO L225 Difference]: With dead ends: 567 [2021-02-21 19:00:27,160 INFO L226 Difference]: Without dead ends: 345 [2021-02-21 19:00:27,171 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 19:00:27,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2021-02-21 19:00:27,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 300. [2021-02-21 19:00:27,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 300 states. [2021-02-21 19:00:27,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 327 transitions. [2021-02-21 19:00:27,455 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 327 transitions. Word has length 158 [2021-02-21 19:00:27,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:00:27,458 INFO L480 AbstractCegarLoop]: Abstraction has 300 states and 327 transitions. [2021-02-21 19:00:27,458 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-21 19:00:27,458 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 327 transitions. [2021-02-21 19:00:27,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-02-21 19:00:27,472 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:00:27,472 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 19:00:27,473 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 19:00:27,473 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:00:27,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:00:27,474 INFO L82 PathProgramCache]: Analyzing trace with hash -1558389514, now seen corresponding path program 1 times [2021-02-21 19:00:27,475 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:00:27,477 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [662258781] [2021-02-21 19:00:27,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:00:27,483 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:00:27,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:27,594 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:27,595 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:27,596 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:27,596 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:00:27,599 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:27,600 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:27,835 WARN L202 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:00:27,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:00:27,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:27,876 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:27,877 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:27,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:00:27,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:27,885 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:27,885 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:27,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:00:27,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:27,888 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:27,888 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:27,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:00:27,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:27,891 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:27,892 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:27,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:00:27,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:27,894 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:27,894 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:27,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-02-21 19:00:27,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:27,897 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:27,898 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:27,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-02-21 19:00:27,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:27,900 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:27,900 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:27,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-02-21 19:00:27,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:27,903 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:27,904 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:27,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 19:00:27,953 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [662258781] [2021-02-21 19:00:27,954 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:00:27,954 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 19:00:27,954 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107768250] [2021-02-21 19:00:27,955 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 19:00:27,955 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:00:27,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 19:00:27,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 19:00:27,956 INFO L87 Difference]: Start difference. First operand 300 states and 327 transitions. Second operand 4 states. [2021-02-21 19:00:28,577 WARN L202 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 19:00:29,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:00:29,741 INFO L93 Difference]: Finished difference Result 477 states and 535 transitions. [2021-02-21 19:00:29,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-21 19:00:29,742 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 159 [2021-02-21 19:00:29,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:00:29,746 INFO L225 Difference]: With dead ends: 477 [2021-02-21 19:00:29,746 INFO L226 Difference]: Without dead ends: 328 [2021-02-21 19:00:29,748 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-21 19:00:29,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2021-02-21 19:00:29,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 290. [2021-02-21 19:00:29,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 290 states. [2021-02-21 19:00:29,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 314 transitions. [2021-02-21 19:00:29,855 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 314 transitions. Word has length 159 [2021-02-21 19:00:29,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:00:29,856 INFO L480 AbstractCegarLoop]: Abstraction has 290 states and 314 transitions. [2021-02-21 19:00:29,856 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 19:00:29,856 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 314 transitions. [2021-02-21 19:00:29,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-02-21 19:00:29,859 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:00:29,859 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 19:00:29,859 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 19:00:29,859 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:00:29,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:00:29,860 INFO L82 PathProgramCache]: Analyzing trace with hash 1682854002, now seen corresponding path program 1 times [2021-02-21 19:00:29,860 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:00:29,860 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [480169462] [2021-02-21 19:00:29,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:00:29,864 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:00:29,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:29,946 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:29,947 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:00:29,949 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:29,950 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:00:29,950 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:29,951 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:00:29,954 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:29,955 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:00:29,959 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:29,959 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:00:29,963 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:29,964 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:00:29,964 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:29,965 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:00:29,965 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:29,966 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:30,197 WARN L202 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:00:30,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:00:30,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:30,249 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:30,249 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:30,250 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:30,250 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 19:00:30,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:00:30,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:30,260 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:30,260 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:30,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:00:30,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:30,265 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:30,286 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:30,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:00:30,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:30,301 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:30,301 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:30,309 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:30,309 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 19:00:30,326 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-21 19:00:30,327 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-21 19:00:30,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:00:30,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:30,345 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:30,346 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:30,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-21 19:00:30,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:30,349 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:30,350 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:30,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-02-21 19:00:30,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:30,352 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:30,353 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:30,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-02-21 19:00:30,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:30,361 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:30,362 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:30,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 19:00:30,408 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [480169462] [2021-02-21 19:00:30,409 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:00:30,409 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-21 19:00:30,409 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386263757] [2021-02-21 19:00:30,410 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-21 19:00:30,410 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:00:30,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-21 19:00:30,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-21 19:00:30,411 INFO L87 Difference]: Start difference. First operand 290 states and 314 transitions. Second operand 9 states. [2021-02-21 19:00:30,993 WARN L202 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:00:31,324 WARN L202 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 19:00:31,590 WARN L202 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 19:00:31,929 WARN L202 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:00:32,218 WARN L202 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:00:32,482 WARN L202 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:00:33,319 WARN L202 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 19:00:35,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:00:35,918 INFO L93 Difference]: Finished difference Result 786 states and 899 transitions. [2021-02-21 19:00:35,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-21 19:00:35,921 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 168 [2021-02-21 19:00:35,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:00:35,934 INFO L225 Difference]: With dead ends: 786 [2021-02-21 19:00:35,934 INFO L226 Difference]: Without dead ends: 611 [2021-02-21 19:00:35,937 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2021-02-21 19:00:35,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 611 states. [2021-02-21 19:00:36,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 611 to 540. [2021-02-21 19:00:36,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 540 states. [2021-02-21 19:00:36,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 540 states to 540 states and 603 transitions. [2021-02-21 19:00:36,202 INFO L78 Accepts]: Start accepts. Automaton has 540 states and 603 transitions. Word has length 168 [2021-02-21 19:00:36,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:00:36,203 INFO L480 AbstractCegarLoop]: Abstraction has 540 states and 603 transitions. [2021-02-21 19:00:36,203 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-21 19:00:36,203 INFO L276 IsEmpty]: Start isEmpty. Operand 540 states and 603 transitions. [2021-02-21 19:00:36,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-02-21 19:00:36,206 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:00:36,207 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 19:00:36,207 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 19:00:36,207 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:00:36,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:00:36,208 INFO L82 PathProgramCache]: Analyzing trace with hash 1142831282, now seen corresponding path program 1 times [2021-02-21 19:00:36,208 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:00:36,208 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1811919179] [2021-02-21 19:00:36,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:00:36,211 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:00:36,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:36,278 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:36,279 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:00:36,281 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:36,282 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:00:36,282 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:36,283 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:00:36,283 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:36,283 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:00:36,284 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:36,284 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:00:36,285 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:36,285 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:00:36,288 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:36,289 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:00:36,292 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:36,293 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:36,520 WARN L202 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:00:36,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:00:36,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:36,569 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:36,569 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:36,570 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:36,570 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 19:00:36,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:00:36,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:36,579 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:36,579 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:36,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:00:36,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:36,581 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:36,582 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:36,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:00:36,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:36,585 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:36,585 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:36,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:00:36,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:36,588 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:36,589 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:36,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-02-21 19:00:36,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:36,602 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:36,602 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:36,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-02-21 19:00:36,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:36,606 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:36,606 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:36,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-02-21 19:00:36,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:36,610 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:36,610 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:36,611 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:36,611 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:00:36,620 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:36,621 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:00:36,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2021-02-21 19:00:36,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:36,632 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:36,634 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:36,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 19:00:36,683 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1811919179] [2021-02-21 19:00:36,683 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:00:36,684 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-21 19:00:36,684 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499354819] [2021-02-21 19:00:36,684 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-21 19:00:36,684 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:00:36,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-21 19:00:36,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-21 19:00:36,685 INFO L87 Difference]: Start difference. First operand 540 states and 603 transitions. Second operand 9 states. [2021-02-21 19:00:37,171 WARN L202 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:00:39,209 WARN L202 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:00:39,516 WARN L202 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:00:39,818 WARN L202 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:00:40,202 WARN L202 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:00:40,477 WARN L202 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:00:40,775 WARN L202 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:00:41,050 WARN L202 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:00:42,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:00:42,201 INFO L93 Difference]: Finished difference Result 1477 states and 1760 transitions. [2021-02-21 19:00:42,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-02-21 19:00:42,204 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 177 [2021-02-21 19:00:42,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:00:42,212 INFO L225 Difference]: With dead ends: 1477 [2021-02-21 19:00:42,213 INFO L226 Difference]: Without dead ends: 1052 [2021-02-21 19:00:42,215 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2021-02-21 19:00:42,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1052 states. [2021-02-21 19:00:42,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1052 to 948. [2021-02-21 19:00:42,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 948 states. [2021-02-21 19:00:42,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 948 states to 948 states and 1082 transitions. [2021-02-21 19:00:42,634 INFO L78 Accepts]: Start accepts. Automaton has 948 states and 1082 transitions. Word has length 177 [2021-02-21 19:00:42,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:00:42,635 INFO L480 AbstractCegarLoop]: Abstraction has 948 states and 1082 transitions. [2021-02-21 19:00:42,636 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-21 19:00:42,636 INFO L276 IsEmpty]: Start isEmpty. Operand 948 states and 1082 transitions. [2021-02-21 19:00:42,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-02-21 19:00:42,650 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:00:42,650 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 19:00:42,651 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-21 19:00:42,651 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:00:42,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:00:42,652 INFO L82 PathProgramCache]: Analyzing trace with hash -1523326519, now seen corresponding path program 1 times [2021-02-21 19:00:42,652 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:00:42,652 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2022767710] [2021-02-21 19:00:42,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:00:42,655 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:00:42,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:42,744 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:42,745 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:00:42,747 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:42,748 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:00:42,748 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:42,748 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:00:42,749 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:42,749 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:00:42,750 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:42,750 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:00:42,751 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:42,751 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:00:42,752 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:42,752 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:43,009 WARN L202 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:00:43,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:00:43,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:43,055 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:43,056 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:43,056 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:43,057 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:00:43,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:00:43,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:43,069 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:43,069 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:43,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:00:43,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:43,072 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:43,072 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:43,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:00:43,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:43,075 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:43,076 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:43,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:00:43,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:43,078 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:43,079 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:43,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-02-21 19:00:43,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:43,099 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:43,100 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:00:43,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-02-21 19:00:43,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:43,110 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:43,111 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:43,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-02-21 19:00:43,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:43,114 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:43,115 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:43,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-02-21 19:00:43,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:43,120 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:43,121 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:43,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2021-02-21 19:00:43,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:43,123 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:43,124 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:43,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 19:00:43,179 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2022767710] [2021-02-21 19:00:43,180 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:00:43,180 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-21 19:00:43,180 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79107247] [2021-02-21 19:00:43,180 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-21 19:00:43,181 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:00:43,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-21 19:00:43,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-21 19:00:43,182 INFO L87 Difference]: Start difference. First operand 948 states and 1082 transitions. Second operand 6 states. [2021-02-21 19:00:43,671 WARN L202 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:00:45,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:00:45,979 INFO L93 Difference]: Finished difference Result 2109 states and 2519 transitions. [2021-02-21 19:00:45,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-02-21 19:00:45,980 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 182 [2021-02-21 19:00:45,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:00:45,988 INFO L225 Difference]: With dead ends: 2109 [2021-02-21 19:00:45,988 INFO L226 Difference]: Without dead ends: 1276 [2021-02-21 19:00:45,991 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-02-21 19:00:45,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1276 states. [2021-02-21 19:00:46,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1276 to 1179. [2021-02-21 19:00:46,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1179 states. [2021-02-21 19:00:46,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1179 states to 1179 states and 1342 transitions. [2021-02-21 19:00:46,515 INFO L78 Accepts]: Start accepts. Automaton has 1179 states and 1342 transitions. Word has length 182 [2021-02-21 19:00:46,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:00:46,516 INFO L480 AbstractCegarLoop]: Abstraction has 1179 states and 1342 transitions. [2021-02-21 19:00:46,516 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-21 19:00:46,516 INFO L276 IsEmpty]: Start isEmpty. Operand 1179 states and 1342 transitions. [2021-02-21 19:00:46,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-02-21 19:00:46,520 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:00:46,520 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 19:00:46,520 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-21 19:00:46,520 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:00:46,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:00:46,521 INFO L82 PathProgramCache]: Analyzing trace with hash -751773284, now seen corresponding path program 1 times [2021-02-21 19:00:46,521 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:00:46,521 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [878356222] [2021-02-21 19:00:46,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:00:46,524 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:00:46,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 19:00:46,604 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 19:00:46,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 19:00:46,673 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 19:00:46,872 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-21 19:00:46,872 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-21 19:00:46,873 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-21 19:00:46,895 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 07:00:46 BoogieIcfgContainer [2021-02-21 19:00:46,895 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 19:00:46,896 INFO L168 Benchmark]: Toolchain (without parser) took 24546.07 ms. Allocated memory was 166.7 MB in the beginning and 610.3 MB in the end (delta: 443.5 MB). Free memory was 141.3 MB in the beginning and 272.9 MB in the end (delta: -131.6 MB). Peak memory consumption was 313.2 MB. Max. memory is 8.0 GB. [2021-02-21 19:00:46,897 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 166.7 MB. Free memory is still 139.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 19:00:46,897 INFO L168 Benchmark]: CACSL2BoogieTranslator took 596.24 ms. Allocated memory is still 166.7 MB. Free memory was 140.2 MB in the beginning and 118.2 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2021-02-21 19:00:46,898 INFO L168 Benchmark]: Boogie Preprocessor took 106.63 ms. Allocated memory is still 166.7 MB. Free memory was 118.2 MB in the beginning and 148.3 MB in the end (delta: -30.2 MB). Peak memory consumption was 8.8 MB. Max. memory is 8.0 GB. [2021-02-21 19:00:46,898 INFO L168 Benchmark]: RCFGBuilder took 1249.02 ms. Allocated memory was 166.7 MB in the beginning and 200.3 MB in the end (delta: 33.6 MB). Free memory was 148.0 MB in the beginning and 132.4 MB in the end (delta: 15.5 MB). Peak memory consumption was 64.8 MB. Max. memory is 8.0 GB. [2021-02-21 19:00:46,899 INFO L168 Benchmark]: TraceAbstraction took 22570.56 ms. Allocated memory was 200.3 MB in the beginning and 610.3 MB in the end (delta: 410.0 MB). Free memory was 131.9 MB in the beginning and 272.9 MB in the end (delta: -141.0 MB). Peak memory consumption was 269.0 MB. Max. memory is 8.0 GB. [2021-02-21 19:00:46,901 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 166.7 MB. Free memory is still 139.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 596.24 ms. Allocated memory is still 166.7 MB. Free memory was 140.2 MB in the beginning and 118.2 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 106.63 ms. Allocated memory is still 166.7 MB. Free memory was 118.2 MB in the beginning and 148.3 MB in the end (delta: -30.2 MB). Peak memory consumption was 8.8 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1249.02 ms. Allocated memory was 166.7 MB in the beginning and 200.3 MB in the end (delta: 33.6 MB). Free memory was 148.0 MB in the beginning and 132.4 MB in the end (delta: 15.5 MB). Peak memory consumption was 64.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 22570.56 ms. Allocated memory was 200.3 MB in the beginning and 610.3 MB in the end (delta: 410.0 MB). Free memory was 131.9 MB in the beginning and 272.9 MB in the end (delta: -141.0 MB). Peak memory consumption was 269.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 696]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L211] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L416] int waterLevel = 1; [L417] int methaneLevelCritical = 0; [L519] int cleanupTimeShifts = 4; [L771] int pumpRunning = 0; [L772] int systemActive = 1; [L598] int retValue_acc ; [L599] int tmp ; [L603] FCALL select_helpers() [L604] FCALL select_features() [L605] CALL, EXPR valid_product() [L647] int retValue_acc ; [L650] retValue_acc = 1 [L651] return (retValue_acc); [L605] RET, EXPR valid_product() [L605] tmp = valid_product() [L607] COND TRUE \read(tmp) [L609] FCALL setup() [L610] CALL runTest() [L589] CALL test() [L703] int splverifierCounter ; [L704] int tmp ; [L705] int tmp___0 ; [L706] int tmp___1 ; [L707] int tmp___2 ; [L710] splverifierCounter = 0 [L712] COND TRUE 1 [L714] COND TRUE splverifierCounter < 4 [L720] tmp = __VERIFIER_nondet_int() [L722] COND TRUE \read(tmp) [L724] CALL waterRise() [L434] COND TRUE waterLevel < 2 [L435] waterLevel = waterLevel + 1 [L724] RET waterRise() [L730] tmp___0 = __VERIFIER_nondet_int() [L732] COND FALSE !(\read(tmp___0)) [L740] tmp___2 = __VERIFIER_nondet_int() [L742] COND FALSE !(\read(tmp___2)) [L746] tmp___1 = __VERIFIER_nondet_int() [L748] COND TRUE \read(tmp___1) [L750] CALL stopSystem() [L989] COND FALSE !(\read(pumpRunning)) [L996] systemActive = 0 [L750] RET stopSystem() [L757] CALL timeShift() [L778] COND FALSE !(\read(pumpRunning)) [L785] COND FALSE !(\read(systemActive)) [L793] CALL __utac_acc__Specification3_spec__1() [L659] int tmp ; [L660] int tmp___0 ; [L661] int tmp___1 ; [L665] CALL, EXPR isMethaneLevelCritical() [L455] int retValue_acc ; [L458] retValue_acc = methaneLevelCritical [L459] return (retValue_acc); [L665] RET, EXPR isMethaneLevelCritical() [L665] tmp = isMethaneLevelCritical() [L667] COND FALSE !(\read(tmp)) [L671] CALL, EXPR getWaterLevel() [L487] int retValue_acc ; [L490] retValue_acc = waterLevel [L491] return (retValue_acc); [L671] RET, EXPR getWaterLevel() [L671] tmp___0 = getWaterLevel() [L673] COND TRUE tmp___0 == 2 [L675] CALL, EXPR isPumpRunning() [L903] int retValue_acc ; [L906] retValue_acc = pumpRunning [L907] return (retValue_acc); [L675] RET, EXPR isPumpRunning() [L675] tmp___1 = isPumpRunning() [L677] COND FALSE !(\read(tmp___1)) [L681] CALL __automaton_fail() [L696] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 43 procedures, 667 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 22.4s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 17.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1420 SDtfs, 2115 SDslu, 1630 SDs, 0 SdLazy, 4232 SolverSat, 659 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 9.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 148 GetRequests, 104 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 5.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1179occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.5s AutomataMinimizationTime, 5 MinimizatonAttempts, 355 StatesRemovedByMinimization, 5 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...