/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_product20.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 16:23:30,622 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 16:23:30,625 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 16:23:30,663 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-23 16:23:30,663 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-23 16:23:30,665 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-23 16:23:30,667 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-23 16:23:30,669 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-23 16:23:30,671 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-23 16:23:30,672 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-23 16:23:30,674 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-23 16:23:30,675 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-23 16:23:30,676 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 16:23:30,677 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 16:23:30,678 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 16:23:30,680 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 16:23:30,681 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 16:23:30,703 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 16:23:30,708 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 16:23:30,712 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 16:23:30,714 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 16:23:30,718 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 16:23:30,723 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 16:23:30,724 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 16:23:30,727 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-23 16:23:30,727 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-23 16:23:30,728 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-23 16:23:30,729 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-23 16:23:30,729 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-23 16:23:30,731 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-23 16:23:30,731 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-23 16:23:30,732 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-23 16:23:30,733 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-23 16:23:30,734 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-23 16:23:30,735 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-23 16:23:30,735 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-23 16:23:30,736 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-23 16:23:30,736 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-23 16:23:30,737 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 16:23:30,738 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 16:23:30,739 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 16:23:30,740 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-23 16:23:30,752 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 16:23:30,752 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 16:23:30,754 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 16:23:30,754 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 16:23:30,754 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 16:23:30,754 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 16:23:30,755 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 16:23:30,755 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 16:23:30,755 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 16:23:30,755 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 16:23:30,756 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 16:23:30,756 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 16:23:30,756 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 16:23:30,756 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 16:23:30,756 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 16:23:30,757 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 16:23:30,757 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 16:23:30,757 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 16:23:30,757 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 16:23:30,758 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 16:23:30,758 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 16:23:30,758 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 16:23:30,758 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 16:23:31,116 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 16:23:31,147 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 16:23:31,151 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 16:23:31,152 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 16:23:31,153 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 16:23:31,154 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product20.cil.c [2021-02-23 16:23:31,250 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/59ca11529/98988fc33d1b490ab0d37cd32ea8470f/FLAG040730158 [2021-02-23 16:23:31,952 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 16:23:31,959 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product20.cil.c [2021-02-23 16:23:31,975 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/59ca11529/98988fc33d1b490ab0d37cd32ea8470f/FLAG040730158 [2021-02-23 16:23:32,239 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/59ca11529/98988fc33d1b490ab0d37cd32ea8470f [2021-02-23 16:23:32,242 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 16:23:32,255 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 16:23:32,258 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 16:23:32,258 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 16:23:32,263 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 16:23:32,264 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 04:23:32" (1/1) ... [2021-02-23 16:23:32,266 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63679461 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:23:32, skipping insertion in model container [2021-02-23 16:23:32,266 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 04:23:32" (1/1) ... [2021-02-23 16:23:32,275 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 16:23:32,343 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 16:23:32,741 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_product20.cil.c[17631,17644] [2021-02-23 16:23:32,749 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 16:23:32,766 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 16:23:32,882 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_product20.cil.c[17631,17644] [2021-02-23 16:23:32,883 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 16:23:32,922 INFO L208 MainTranslator]: Completed translation [2021-02-23 16:23:32,923 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:23:32 WrapperNode [2021-02-23 16:23:32,923 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 16:23:32,924 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 16:23:32,925 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 16:23:32,925 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 16:23:32,938 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:23:32" (1/1) ... [2021-02-23 16:23:32,939 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:23:32" (1/1) ... [2021-02-23 16:23:32,962 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:23:32" (1/1) ... [2021-02-23 16:23:32,965 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:23:32" (1/1) ... [2021-02-23 16:23:33,013 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:23:32" (1/1) ... [2021-02-23 16:23:33,032 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:23:32" (1/1) ... [2021-02-23 16:23:33,064 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:23:32" (1/1) ... [2021-02-23 16:23:33,071 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 16:23:33,072 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 16:23:33,072 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 16:23:33,072 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 16:23:33,073 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:23:32" (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 [2021-02-23 16:23:33,180 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 16:23:33,181 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 16:23:33,181 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-23 16:23:33,181 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 16:23:33,181 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-23 16:23:33,181 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-23 16:23:33,182 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-23 16:23:33,182 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-23 16:23:33,182 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-23 16:23:33,182 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-23 16:23:33,182 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-23 16:23:33,182 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-23 16:23:33,183 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-23 16:23:33,183 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-23 16:23:33,183 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-23 16:23:33,183 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-23 16:23:33,183 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-23 16:23:33,183 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-23 16:23:33,184 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 16:23:33,184 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2021-02-23 16:23:33,184 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-23 16:23:33,184 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-02-23 16:23:33,184 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-23 16:23:33,184 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-23 16:23:33,185 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-23 16:23:33,185 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-23 16:23:33,185 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-23 16:23:33,185 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-23 16:23:33,185 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2021-02-23 16:23:33,185 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2021-02-23 16:23:33,186 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2021-02-23 16:23:33,186 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-23 16:23:33,186 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-23 16:23:33,186 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-23 16:23:33,186 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-23 16:23:33,186 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-23 16:23:33,187 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-23 16:23:33,187 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-23 16:23:33,187 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2021-02-23 16:23:33,187 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-23 16:23:33,187 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 16:23:33,187 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 16:23:33,187 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 16:23:33,188 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 16:23:33,188 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 16:23:33,188 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-23 16:23:33,188 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-23 16:23:33,188 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-23 16:23:33,188 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-23 16:23:33,188 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-23 16:23:33,189 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-23 16:23:33,189 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-23 16:23:33,189 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-23 16:23:33,189 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-23 16:23:33,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-23 16:23:33,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 16:23:33,189 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-23 16:23:33,189 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-23 16:23:33,190 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 16:23:33,190 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-23 16:23:33,190 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-23 16:23:33,190 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 16:23:33,190 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-23 16:23:33,190 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-23 16:23:33,190 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-23 16:23:33,191 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-23 16:23:33,191 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-23 16:23:33,191 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-23 16:23:33,191 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-23 16:23:33,191 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-23 16:23:33,191 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-23 16:23:33,191 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-23 16:23:33,192 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-23 16:23:33,192 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-23 16:23:33,192 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 16:23:33,192 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-23 16:23:33,192 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-23 16:23:33,192 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-23 16:23:33,193 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-23 16:23:33,193 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2021-02-23 16:23:33,193 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-23 16:23:33,193 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-23 16:23:33,193 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2021-02-23 16:23:33,193 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-23 16:23:33,193 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-23 16:23:33,194 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2021-02-23 16:23:33,194 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2021-02-23 16:23:33,194 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-23 16:23:33,194 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-02-23 16:23:33,194 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2021-02-23 16:23:33,194 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-23 16:23:33,195 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 16:23:33,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 16:23:33,195 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 16:23:34,849 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 16:23:34,850 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-23 16:23:34,852 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 04:23:34 BoogieIcfgContainer [2021-02-23 16:23:34,853 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 16:23:34,854 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 16:23:34,854 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 16:23:34,858 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 16:23:34,858 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 04:23:32" (1/3) ... [2021-02-23 16:23:34,859 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32375042 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 04:23:34, skipping insertion in model container [2021-02-23 16:23:34,859 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:23:32" (2/3) ... [2021-02-23 16:23:34,860 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32375042 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 04:23:34, skipping insertion in model container [2021-02-23 16:23:34,860 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 04:23:34" (3/3) ... [2021-02-23 16:23:34,861 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product20.cil.c [2021-02-23 16:23:34,868 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 16:23:34,874 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 16:23:34,892 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 16:23:34,919 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 16:23:34,919 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 16:23:34,919 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-23 16:23:34,919 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 16:23:34,920 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 16:23:34,920 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 16:23:34,920 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 16:23:34,920 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 16:23:34,943 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states. [2021-02-23 16:23:34,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-02-23 16:23:34,965 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:23:34,967 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] [2021-02-23 16:23:34,968 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:23:34,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:23:34,975 INFO L82 PathProgramCache]: Analyzing trace with hash -845332211, now seen corresponding path program 1 times [2021-02-23 16:23:34,983 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:23:34,984 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1340475911] [2021-02-23 16:23:34,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:23:35,056 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:23:35,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:23:35,380 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:35,381 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:23:35,382 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:35,383 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:23:36,022 WARN L202 SmtUtils]: Spent 616.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:23:36,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:23:36,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:23:36,126 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:36,127 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:23:36,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:23:36,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:23:36,144 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:36,145 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:23:36,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:23:36,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:23:36,149 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:36,150 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:23:36,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:23:36,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:23:36,154 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:36,155 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:23:36,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:23:36,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:23:36,159 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:36,159 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:23:36,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-23 16:23:36,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:23:36,164 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:36,165 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:23:36,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-23 16:23:36,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:23:36,175 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:36,177 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:23:36,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-02-23 16:23:36,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:23:36,183 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:36,184 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:23:36,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:23:36,259 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1340475911] [2021-02-23 16:23:36,261 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:23:36,261 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-23 16:23:36,261 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413357376] [2021-02-23 16:23:36,269 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-23 16:23:36,269 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:23:36,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-23 16:23:36,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 16:23:36,291 INFO L87 Difference]: Start difference. First operand 308 states. Second operand 3 states. [2021-02-23 16:23:38,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:23:38,453 INFO L93 Difference]: Finished difference Result 464 states and 552 transitions. [2021-02-23 16:23:38,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-23 16:23:38,456 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 158 [2021-02-23 16:23:38,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:23:38,483 INFO L225 Difference]: With dead ends: 464 [2021-02-23 16:23:38,483 INFO L226 Difference]: Without dead ends: 292 [2021-02-23 16:23:38,490 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 16:23:38,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2021-02-23 16:23:38,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 250. [2021-02-23 16:23:38,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2021-02-23 16:23:38,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 270 transitions. [2021-02-23 16:23:38,708 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 270 transitions. Word has length 158 [2021-02-23 16:23:38,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:23:38,712 INFO L480 AbstractCegarLoop]: Abstraction has 250 states and 270 transitions. [2021-02-23 16:23:38,712 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-23 16:23:38,713 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 270 transitions. [2021-02-23 16:23:38,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-02-23 16:23:38,733 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:23:38,733 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] [2021-02-23 16:23:38,734 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 16:23:38,734 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:23:38,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:23:38,735 INFO L82 PathProgramCache]: Analyzing trace with hash -284761496, now seen corresponding path program 1 times [2021-02-23 16:23:38,736 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:23:38,738 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1477138130] [2021-02-23 16:23:38,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:23:38,744 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:23:38,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:23:38,969 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:38,971 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:23:38,972 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:38,973 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:23:38,978 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:38,979 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:23:39,537 WARN L202 SmtUtils]: Spent 541.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:23:39,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:23:39,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:23:39,582 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:39,583 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:23:39,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:23:39,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:23:39,591 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:39,592 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:23:39,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:23:39,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:23:39,595 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:39,595 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:23:39,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:23:39,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:23:39,598 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:39,599 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:23:39,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:23:39,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:23:39,602 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:39,603 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:23:39,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-02-23 16:23:39,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:23:39,606 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:39,606 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:23:39,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-02-23 16:23:39,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:23:39,610 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:39,610 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:23:39,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-02-23 16:23:39,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:23:39,613 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:39,614 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:23:39,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:23:39,669 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1477138130] [2021-02-23 16:23:39,670 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:23:39,670 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 16:23:39,670 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855161940] [2021-02-23 16:23:39,671 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 16:23:39,671 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:23:39,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 16:23:39,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 16:23:39,672 INFO L87 Difference]: Start difference. First operand 250 states and 270 transitions. Second operand 4 states. [2021-02-23 16:23:40,838 WARN L202 SmtUtils]: Spent 582.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:23:42,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:23:42,253 INFO L93 Difference]: Finished difference Result 370 states and 414 transitions. [2021-02-23 16:23:42,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-23 16:23:42,254 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 159 [2021-02-23 16:23:42,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:23:42,258 INFO L225 Difference]: With dead ends: 370 [2021-02-23 16:23:42,259 INFO L226 Difference]: Without dead ends: 275 [2021-02-23 16:23:42,261 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-23 16:23:42,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2021-02-23 16:23:42,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 240. [2021-02-23 16:23:42,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 240 states. [2021-02-23 16:23:42,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 257 transitions. [2021-02-23 16:23:42,381 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 257 transitions. Word has length 159 [2021-02-23 16:23:42,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:23:42,383 INFO L480 AbstractCegarLoop]: Abstraction has 240 states and 257 transitions. [2021-02-23 16:23:42,384 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 16:23:42,388 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 257 transitions. [2021-02-23 16:23:42,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2021-02-23 16:23:42,391 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:23:42,391 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] [2021-02-23 16:23:42,391 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 16:23:42,391 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:23:42,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:23:42,392 INFO L82 PathProgramCache]: Analyzing trace with hash 1998728577, now seen corresponding path program 1 times [2021-02-23 16:23:42,392 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:23:42,393 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [189504904] [2021-02-23 16:23:42,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:23:42,396 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:23:42,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:23:42,497 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:42,498 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:23:42,499 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:42,499 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:23:42,505 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:42,506 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:23:42,512 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:42,513 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:23:42,514 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:42,515 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:23:42,524 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:42,525 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:23:43,140 WARN L202 SmtUtils]: Spent 593.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:23:43,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:23:43,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:23:43,177 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:43,178 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:23:43,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:23:43,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:23:43,186 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:43,187 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:23:43,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:23:43,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:23:43,189 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:43,190 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:23:43,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:23:43,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:23:43,196 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:43,197 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:23:43,205 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:43,206 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:23:43,225 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:43,226 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:23:43,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:23:43,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:23:43,248 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:43,248 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:23:43,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-02-23 16:23:43,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:23:43,269 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:43,270 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:23:43,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-02-23 16:23:43,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:23:43,291 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:43,292 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:23:43,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-02-23 16:23:43,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:23:43,295 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:43,296 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:23:43,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-02-23 16:23:43,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:23:43,300 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:43,303 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:23:43,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:23:43,375 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [189504904] [2021-02-23 16:23:43,375 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:23:43,376 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-23 16:23:43,376 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085804096] [2021-02-23 16:23:43,376 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-23 16:23:43,377 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:23:43,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-23 16:23:43,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-23 16:23:43,378 INFO L87 Difference]: Start difference. First operand 240 states and 257 transitions. Second operand 10 states. [2021-02-23 16:23:44,381 WARN L202 SmtUtils]: Spent 569.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:23:45,153 WARN L202 SmtUtils]: Spent 618.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:23:45,857 WARN L202 SmtUtils]: Spent 679.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-23 16:23:46,550 WARN L202 SmtUtils]: Spent 633.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:23:47,224 WARN L202 SmtUtils]: Spent 642.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:23:47,896 WARN L202 SmtUtils]: Spent 641.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:23:49,516 WARN L202 SmtUtils]: Spent 596.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:23:53,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:23:53,174 INFO L93 Difference]: Finished difference Result 652 states and 757 transitions. [2021-02-23 16:23:53,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-02-23 16:23:53,175 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 172 [2021-02-23 16:23:53,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:23:53,181 INFO L225 Difference]: With dead ends: 652 [2021-02-23 16:23:53,181 INFO L226 Difference]: Without dead ends: 527 [2021-02-23 16:23:53,183 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2021-02-23 16:23:53,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 527 states. [2021-02-23 16:23:53,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 527 to 436. [2021-02-23 16:23:53,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 436 states. [2021-02-23 16:23:53,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 485 transitions. [2021-02-23 16:23:53,351 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 485 transitions. Word has length 172 [2021-02-23 16:23:53,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:23:53,352 INFO L480 AbstractCegarLoop]: Abstraction has 436 states and 485 transitions. [2021-02-23 16:23:53,352 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-23 16:23:53,352 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 485 transitions. [2021-02-23 16:23:53,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-02-23 16:23:53,355 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:23:53,356 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] [2021-02-23 16:23:53,356 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 16:23:53,356 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:23:53,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:23:53,357 INFO L82 PathProgramCache]: Analyzing trace with hash 441005700, now seen corresponding path program 1 times [2021-02-23 16:23:53,357 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:23:53,357 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [267349340] [2021-02-23 16:23:53,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:23:53,360 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:23:53,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:23:53,437 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:53,438 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:23:53,458 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:53,459 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:23:53,460 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:53,461 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:23:53,462 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:53,463 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:23:53,464 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:53,466 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:23:53,466 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:53,467 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:23:53,474 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:53,475 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:23:53,484 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:53,485 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:23:54,101 WARN L202 SmtUtils]: Spent 596.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:23:54,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:23:54,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:23:54,161 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:54,163 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:23:54,164 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:54,165 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 16:23:54,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:23:54,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:23:54,173 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:54,174 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:23:54,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:23:54,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:23:54,178 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:54,178 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:23:54,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:23:54,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:23:54,184 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:54,185 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:23:54,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:23:54,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:23:54,190 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:54,191 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:23:54,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-02-23 16:23:54,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:23:54,212 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:54,213 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:23:54,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-02-23 16:23:54,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:23:54,216 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:54,217 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:23:54,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-02-23 16:23:54,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:23:54,221 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:54,222 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:23:54,223 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:54,223 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:23:54,238 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:54,238 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:23:54,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2021-02-23 16:23:54,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:23:54,257 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:54,258 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:23:54,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:23:54,304 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [267349340] [2021-02-23 16:23:54,304 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:23:54,304 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-23 16:23:54,304 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409602343] [2021-02-23 16:23:54,305 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-23 16:23:54,305 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:23:54,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-23 16:23:54,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-23 16:23:54,311 INFO L87 Difference]: Start difference. First operand 436 states and 485 transitions. Second operand 9 states. [2021-02-23 16:23:55,247 WARN L202 SmtUtils]: Spent 559.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:23:58,214 WARN L202 SmtUtils]: Spent 620.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:23:58,945 WARN L202 SmtUtils]: Spent 646.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:23:59,678 WARN L202 SmtUtils]: Spent 619.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:24:00,488 WARN L202 SmtUtils]: Spent 604.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:24:01,181 WARN L202 SmtUtils]: Spent 648.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:24:01,868 WARN L202 SmtUtils]: Spent 623.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:24:02,523 WARN L202 SmtUtils]: Spent 618.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:24:03,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:24:03,929 INFO L93 Difference]: Finished difference Result 1156 states and 1386 transitions. [2021-02-23 16:24:03,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-02-23 16:24:03,932 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 177 [2021-02-23 16:24:03,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:24:03,940 INFO L225 Difference]: With dead ends: 1156 [2021-02-23 16:24:03,940 INFO L226 Difference]: Without dead ends: 835 [2021-02-23 16:24:03,943 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2021-02-23 16:24:03,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 835 states. [2021-02-23 16:24:04,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 835 to 736. [2021-02-23 16:24:04,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 736 states. [2021-02-23 16:24:04,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 736 states to 736 states and 842 transitions. [2021-02-23 16:24:04,309 INFO L78 Accepts]: Start accepts. Automaton has 736 states and 842 transitions. Word has length 177 [2021-02-23 16:24:04,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:24:04,309 INFO L480 AbstractCegarLoop]: Abstraction has 736 states and 842 transitions. [2021-02-23 16:24:04,310 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-23 16:24:04,310 INFO L276 IsEmpty]: Start isEmpty. Operand 736 states and 842 transitions. [2021-02-23 16:24:04,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-02-23 16:24:04,314 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:24:04,315 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] [2021-02-23 16:24:04,315 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-23 16:24:04,315 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:24:04,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:24:04,316 INFO L82 PathProgramCache]: Analyzing trace with hash -1949426795, now seen corresponding path program 1 times [2021-02-23 16:24:04,316 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:24:04,316 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1798945870] [2021-02-23 16:24:04,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:24:04,320 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:24:04,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:04,382 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:04,383 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:24:04,389 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:04,389 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:24:04,390 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:04,391 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:24:04,391 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:04,392 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:24:04,393 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:04,393 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:24:04,394 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:04,394 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:24:04,395 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:04,396 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:04,962 WARN L202 SmtUtils]: Spent 556.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:24:04,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:24:04,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:05,025 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:05,026 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:05,027 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:05,027 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:24:05,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:24:05,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:05,035 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:05,036 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:05,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:24:05,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:05,039 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:05,040 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:05,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:24:05,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:05,043 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:05,044 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:05,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:24:05,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:05,046 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:05,047 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:05,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-02-23 16:24:05,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:05,065 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:05,065 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:24:05,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-02-23 16:24:05,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:05,080 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:05,081 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:05,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-02-23 16:24:05,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:05,083 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:05,084 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:05,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-02-23 16:24:05,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:05,086 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:05,087 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:05,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2021-02-23 16:24:05,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:05,089 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:05,090 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:05,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:24:05,134 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1798945870] [2021-02-23 16:24:05,134 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:24:05,134 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-23 16:24:05,135 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418315059] [2021-02-23 16:24:05,135 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-23 16:24:05,135 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:24:05,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-23 16:24:05,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-23 16:24:05,136 INFO L87 Difference]: Start difference. First operand 736 states and 842 transitions. Second operand 6 states. [2021-02-23 16:24:06,065 WARN L202 SmtUtils]: Spent 548.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:24:07,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:24:07,911 INFO L93 Difference]: Finished difference Result 1253 states and 1494 transitions. [2021-02-23 16:24:07,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-02-23 16:24:07,913 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 182 [2021-02-23 16:24:07,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:24:07,918 INFO L225 Difference]: With dead ends: 1253 [2021-02-23 16:24:07,918 INFO L226 Difference]: Without dead ends: 632 [2021-02-23 16:24:07,921 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-02-23 16:24:07,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 632 states. [2021-02-23 16:24:08,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 632 to 555. [2021-02-23 16:24:08,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 555 states. [2021-02-23 16:24:08,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 555 states to 555 states and 606 transitions. [2021-02-23 16:24:08,181 INFO L78 Accepts]: Start accepts. Automaton has 555 states and 606 transitions. Word has length 182 [2021-02-23 16:24:08,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:24:08,182 INFO L480 AbstractCegarLoop]: Abstraction has 555 states and 606 transitions. [2021-02-23 16:24:08,182 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-23 16:24:08,182 INFO L276 IsEmpty]: Start isEmpty. Operand 555 states and 606 transitions. [2021-02-23 16:24:08,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-02-23 16:24:08,185 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:24:08,186 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] [2021-02-23 16:24:08,186 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-23 16:24:08,186 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:24:08,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:24:08,187 INFO L82 PathProgramCache]: Analyzing trace with hash -46471581, now seen corresponding path program 1 times [2021-02-23 16:24:08,187 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:24:08,187 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1089789489] [2021-02-23 16:24:08,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:24:08,190 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:24:08,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 16:24:08,257 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 16:24:08,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 16:24:08,317 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 16:24:08,541 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-23 16:24:08,541 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-23 16:24:08,542 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-23 16:24:08,566 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 04:24:08 BoogieIcfgContainer [2021-02-23 16:24:08,566 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 16:24:08,567 INFO L168 Benchmark]: Toolchain (without parser) took 36323.25 ms. Allocated memory was 152.0 MB in the beginning and 402.7 MB in the end (delta: 250.6 MB). Free memory was 127.8 MB in the beginning and 350.6 MB in the end (delta: -222.8 MB). Peak memory consumption was 243.5 MB. Max. memory is 8.0 GB. [2021-02-23 16:24:08,568 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 152.0 MB. Free memory was 126.4 MB in the beginning and 126.2 MB in the end (delta: 115.8 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 16:24:08,568 INFO L168 Benchmark]: CACSL2BoogieTranslator took 665.34 ms. Allocated memory is still 152.0 MB. Free memory was 126.5 MB in the beginning and 106.0 MB in the end (delta: 20.6 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. [2021-02-23 16:24:08,569 INFO L168 Benchmark]: Boogie Preprocessor took 146.56 ms. Allocated memory is still 152.0 MB. Free memory was 106.0 MB in the beginning and 133.8 MB in the end (delta: -27.8 MB). Peak memory consumption was 8.9 MB. Max. memory is 8.0 GB. [2021-02-23 16:24:08,569 INFO L168 Benchmark]: RCFGBuilder took 1780.71 ms. Allocated memory is still 152.0 MB. Free memory was 133.8 MB in the beginning and 90.4 MB in the end (delta: 43.4 MB). Peak memory consumption was 65.4 MB. Max. memory is 8.0 GB. [2021-02-23 16:24:08,570 INFO L168 Benchmark]: TraceAbstraction took 33712.09 ms. Allocated memory was 152.0 MB in the beginning and 402.7 MB in the end (delta: 250.6 MB). Free memory was 89.9 MB in the beginning and 350.6 MB in the end (delta: -260.7 MB). Peak memory consumption was 204.9 MB. Max. memory is 8.0 GB. [2021-02-23 16:24:08,572 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 152.0 MB. Free memory was 126.4 MB in the beginning and 126.2 MB in the end (delta: 115.8 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 665.34 ms. Allocated memory is still 152.0 MB. Free memory was 126.5 MB in the beginning and 106.0 MB in the end (delta: 20.6 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 146.56 ms. Allocated memory is still 152.0 MB. Free memory was 106.0 MB in the beginning and 133.8 MB in the end (delta: -27.8 MB). Peak memory consumption was 8.9 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1780.71 ms. Allocated memory is still 152.0 MB. Free memory was 133.8 MB in the beginning and 90.4 MB in the end (delta: 43.4 MB). Peak memory consumption was 65.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 33712.09 ms. Allocated memory was 152.0 MB in the beginning and 402.7 MB in the end (delta: 250.6 MB). Free memory was 89.9 MB in the beginning and 350.6 MB in the end (delta: -260.7 MB). Peak memory consumption was 204.9 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 929]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L249] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L446] int cleanupTimeShifts = 4; [L592] int pumpRunning = 0; [L593] int systemActive = 1; [L836] int waterLevel = 1; [L837] int methaneLevelCritical = 0; [L524] int retValue_acc ; [L525] int tmp ; [L529] FCALL select_helpers() [L530] FCALL select_features() [L531] CALL, EXPR valid_product() [L71] int retValue_acc ; [L74] retValue_acc = 1 [L75] return (retValue_acc); [L531] RET, EXPR valid_product() [L531] tmp = valid_product() [L533] COND TRUE \read(tmp) [L535] FCALL setup() [L536] CALL runTest() [L518] CALL test() [L768] int splverifierCounter ; [L769] int tmp ; [L770] int tmp___0 ; [L771] int tmp___1 ; [L772] int tmp___2 ; [L775] splverifierCounter = 0 [L777] COND TRUE 1 [L779] COND TRUE splverifierCounter < 4 [L785] tmp = __VERIFIER_nondet_int() [L787] COND TRUE \read(tmp) [L789] CALL waterRise() [L854] COND TRUE waterLevel < 2 [L855] waterLevel = waterLevel + 1 [L789] RET waterRise() [L795] tmp___0 = __VERIFIER_nondet_int() [L797] COND FALSE !(\read(tmp___0)) [L805] tmp___2 = __VERIFIER_nondet_int() [L807] COND FALSE !(\read(tmp___2)) [L813] tmp___1 = __VERIFIER_nondet_int() [L815] COND TRUE \read(tmp___1) [L817] CALL stopSystem() [L747] COND FALSE !(\read(pumpRunning)) [L754] systemActive = 0 [L817] RET stopSystem() [L824] CALL timeShift() [L599] COND FALSE !(\read(pumpRunning)) [L606] COND FALSE !(\read(systemActive)) [L614] CALL __utac_acc__Specification3_spec__1() [L552] int tmp ; [L553] int tmp___0 ; [L554] int tmp___1 ; [L558] CALL, EXPR isMethaneLevelCritical() [L875] int retValue_acc ; [L878] retValue_acc = methaneLevelCritical [L879] return (retValue_acc); [L558] RET, EXPR isMethaneLevelCritical() [L558] tmp = isMethaneLevelCritical() [L560] COND FALSE !(\read(tmp)) [L564] CALL, EXPR getWaterLevel() [L907] int retValue_acc ; [L910] retValue_acc = waterLevel [L911] return (retValue_acc); [L564] RET, EXPR getWaterLevel() [L564] tmp___0 = getWaterLevel() [L566] COND TRUE tmp___0 == 2 [L568] CALL, EXPR isPumpRunning() [L680] int retValue_acc ; [L683] retValue_acc = pumpRunning [L684] return (retValue_acc); [L568] RET, EXPR isPumpRunning() [L568] tmp___1 = isPumpRunning() [L570] COND FALSE !(\read(tmp___1)) [L574] CALL __automaton_fail() [L929] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 40 procedures, 628 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 33.6s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 27.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1163 SDtfs, 1783 SDslu, 1593 SDs, 0 SdLazy, 3181 SolverSat, 594 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 12.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 150 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 14.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=736occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 344 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...