/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/acceleratedInterpolationWernerOverapprox_32.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product16.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-24 03:27:41,994 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-24 03:27:41,997 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-24 03:27:42,083 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-24 03:27:42,084 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-24 03:27:42,087 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-24 03:27:42,093 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-24 03:27:42,102 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-24 03:27:42,105 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-24 03:27:42,111 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-24 03:27:42,113 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-24 03:27:42,114 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-24 03:27:42,115 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-24 03:27:42,117 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-24 03:27:42,119 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-24 03:27:42,121 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-24 03:27:42,122 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-24 03:27:42,124 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-24 03:27:42,134 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-24 03:27:42,139 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-24 03:27:42,141 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-24 03:27:42,144 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-24 03:27:42,145 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-24 03:27:42,147 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-24 03:27:42,158 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-24 03:27:42,158 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-24 03:27:42,159 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-24 03:27:42,160 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-24 03:27:42,160 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-24 03:27:42,162 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-24 03:27:42,162 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-24 03:27:42,163 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-24 03:27:42,165 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-24 03:27:42,166 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-24 03:27:42,167 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-24 03:27:42,167 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-24 03:27:42,168 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-24 03:27:42,168 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-24 03:27:42,168 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-24 03:27:42,169 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-24 03:27:42,170 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-24 03:27:42,171 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf [2021-02-24 03:27:42,195 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-24 03:27:42,195 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-24 03:27:42,199 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-24 03:27:42,200 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-24 03:27:42,200 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-24 03:27:42,200 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-24 03:27:42,200 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-24 03:27:42,200 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-24 03:27:42,200 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-24 03:27:42,201 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-24 03:27:42,201 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-24 03:27:42,201 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-24 03:27:42,201 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-24 03:27:42,201 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-24 03:27:42,202 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-24 03:27:42,202 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-24 03:27:42,202 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-24 03:27:42,202 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-24 03:27:42,202 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-24 03:27:42,203 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-24 03:27:42,203 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-24 03:27:42,203 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-24 03:27:42,203 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-24 03:27:42,203 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-24 03:27:42,598 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-24 03:27:42,637 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-24 03:27:42,640 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-24 03:27:42,642 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-24 03:27:42,642 INFO L275 PluginConnector]: CDTParser initialized [2021-02-24 03:27:42,643 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product16.cil.c [2021-02-24 03:27:42,728 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/36150460b/6320900fb1514b1a999462d94a93fa03/FLAG8dbb1588c [2021-02-24 03:27:43,500 INFO L306 CDTParser]: Found 1 translation units. [2021-02-24 03:27:43,501 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product16.cil.c [2021-02-24 03:27:43,525 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/36150460b/6320900fb1514b1a999462d94a93fa03/FLAG8dbb1588c [2021-02-24 03:27:43,765 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/36150460b/6320900fb1514b1a999462d94a93fa03 [2021-02-24 03:27:43,775 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-24 03:27:43,790 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-24 03:27:43,797 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-24 03:27:43,797 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-24 03:27:43,801 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-24 03:27:43,803 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 03:27:43" (1/1) ... [2021-02-24 03:27:43,804 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14618ec7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:27:43, skipping insertion in model container [2021-02-24 03:27:43,805 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 03:27:43" (1/1) ... [2021-02-24 03:27:43,814 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-24 03:27:43,885 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-24 03:27:44,039 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_product16.cil.c[1281,1294] [2021-02-24 03:27:44,204 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 03:27:44,226 INFO L203 MainTranslator]: Completed pre-run [2021-02-24 03:27:44,273 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_product16.cil.c[1281,1294] [2021-02-24 03:27:44,413 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 03:27:44,469 INFO L208 MainTranslator]: Completed translation [2021-02-24 03:27:44,470 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:27:44 WrapperNode [2021-02-24 03:27:44,470 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-24 03:27:44,471 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-24 03:27:44,471 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-24 03:27:44,471 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-24 03:27:44,487 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:27:44" (1/1) ... [2021-02-24 03:27:44,487 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:27:44" (1/1) ... [2021-02-24 03:27:44,527 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:27:44" (1/1) ... [2021-02-24 03:27:44,530 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:27:44" (1/1) ... [2021-02-24 03:27:44,587 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:27:44" (1/1) ... [2021-02-24 03:27:44,608 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:27:44" (1/1) ... [2021-02-24 03:27:44,620 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:27:44" (1/1) ... [2021-02-24 03:27:44,636 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-24 03:27:44,637 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-24 03:27:44,637 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-24 03:27:44,637 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-24 03:27:44,639 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:27:44" (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 [2021-02-24 03:27:44,754 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-24 03:27:44,754 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-24 03:27:44,754 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-24 03:27:44,755 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-24 03:27:44,755 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-24 03:27:44,755 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-24 03:27:44,755 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-24 03:27:44,756 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-24 03:27:44,756 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-24 03:27:44,757 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-24 03:27:44,758 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-24 03:27:44,758 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-24 03:27:44,758 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-24 03:27:44,758 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-24 03:27:44,759 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-24 03:27:44,759 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-24 03:27:44,759 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-24 03:27:44,760 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-24 03:27:44,760 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2021-02-24 03:27:44,763 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-24 03:27:44,763 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__base [2021-02-24 03:27:44,763 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-24 03:27:44,764 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-24 03:27:44,764 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-24 03:27:44,764 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-24 03:27:44,764 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-24 03:27:44,764 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2021-02-24 03:27:44,764 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2021-02-24 03:27:44,764 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-24 03:27:44,764 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-24 03:27:44,765 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-24 03:27:44,765 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-24 03:27:44,765 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-24 03:27:44,765 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-24 03:27:44,765 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-24 03:27:44,766 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-24 03:27:44,766 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-24 03:27:44,766 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-24 03:27:44,766 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2021-02-24 03:27:44,766 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-24 03:27:44,767 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-24 03:27:44,767 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-24 03:27:44,767 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-24 03:27:44,767 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-24 03:27:44,767 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-24 03:27:44,767 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-24 03:27:44,768 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-24 03:27:44,768 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-24 03:27:44,768 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-24 03:27:44,768 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-24 03:27:44,768 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-24 03:27:44,768 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-24 03:27:44,769 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-24 03:27:44,769 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-24 03:27:44,769 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-24 03:27:44,769 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-24 03:27:44,769 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-24 03:27:44,769 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-24 03:27:44,770 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-24 03:27:44,770 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-24 03:27:44,770 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-24 03:27:44,770 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-24 03:27:44,770 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-24 03:27:44,771 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-24 03:27:44,771 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-24 03:27:44,771 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-24 03:27:44,771 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-24 03:27:44,771 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-24 03:27:44,771 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-24 03:27:44,771 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-24 03:27:44,772 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-24 03:27:44,772 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-24 03:27:44,772 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-24 03:27:44,773 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-24 03:27:44,773 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2021-02-24 03:27:44,773 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2021-02-24 03:27:44,773 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-24 03:27:44,774 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-24 03:27:44,774 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-24 03:27:44,774 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-24 03:27:44,774 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-24 03:27:44,774 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-24 03:27:44,775 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2021-02-24 03:27:44,775 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-24 03:27:44,775 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2021-02-24 03:27:44,776 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-24 03:27:44,776 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__base [2021-02-24 03:27:44,776 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-24 03:27:44,777 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-24 03:27:44,777 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-24 03:27:44,777 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-24 03:27:44,778 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-24 03:27:46,400 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-24 03:27:46,401 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-24 03:27:46,404 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 03:27:46 BoogieIcfgContainer [2021-02-24 03:27:46,404 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-24 03:27:46,406 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-24 03:27:46,406 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-24 03:27:46,410 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-24 03:27:46,410 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.02 03:27:43" (1/3) ... [2021-02-24 03:27:46,411 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@768b557b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 03:27:46, skipping insertion in model container [2021-02-24 03:27:46,411 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:27:44" (2/3) ... [2021-02-24 03:27:46,411 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@768b557b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 03:27:46, skipping insertion in model container [2021-02-24 03:27:46,412 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 03:27:46" (3/3) ... [2021-02-24 03:27:46,413 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product16.cil.c [2021-02-24 03:27:46,421 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-24 03:27:46,427 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-24 03:27:46,446 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-24 03:27:46,472 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-24 03:27:46,472 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-24 03:27:46,472 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-24 03:27:46,472 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-24 03:27:46,472 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-24 03:27:46,473 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-24 03:27:46,473 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-24 03:27:46,473 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-24 03:27:46,496 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states. [2021-02-24 03:27:46,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-02-24 03:27:46,516 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:27:46,517 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] [2021-02-24 03:27:46,518 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:27:46,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:27:46,524 INFO L82 PathProgramCache]: Analyzing trace with hash 1787509794, now seen corresponding path program 1 times [2021-02-24 03:27:46,533 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:27:46,534 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [209417683] [2021-02-24 03:27:46,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:27:46,611 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:27:46,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:27:47,061 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:27:47,062 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:27:47,063 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:27:47,064 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:27:47,484 WARN L202 SmtUtils]: Spent 402.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-24 03:27:47,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 03:27:47,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:27:47,587 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:27:47,587 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:27:47,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-24 03:27:47,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:27:47,605 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:27:47,606 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:27:47,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-24 03:27:47,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:27:47,609 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:27:47,609 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:27:47,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-24 03:27:47,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:27:47,613 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:27:47,613 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:27:47,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-24 03:27:47,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:27:47,616 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:27:47,617 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:27:47,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-24 03:27:47,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:27:47,620 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:27:47,621 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:27:47,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-24 03:27:47,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:27:47,625 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:27:47,625 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:27:47,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-02-24 03:27:47,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:27:47,629 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:27:47,629 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:27:47,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 03:27:47,669 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [209417683] [2021-02-24 03:27:47,670 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 03:27:47,671 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-24 03:27:47,671 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869109563] [2021-02-24 03:27:47,676 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-24 03:27:47,677 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 03:27:47,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-24 03:27:47,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-24 03:27:47,693 INFO L87 Difference]: Start difference. First operand 301 states. Second operand 3 states. [2021-02-24 03:27:49,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 03:27:49,373 INFO L93 Difference]: Finished difference Result 442 states and 530 transitions. [2021-02-24 03:27:49,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-24 03:27:49,375 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 158 [2021-02-24 03:27:49,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 03:27:49,405 INFO L225 Difference]: With dead ends: 442 [2021-02-24 03:27:49,405 INFO L226 Difference]: Without dead ends: 281 [2021-02-24 03:27:49,411 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-24 03:27:49,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2021-02-24 03:27:49,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 239. [2021-02-24 03:27:49,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2021-02-24 03:27:49,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 259 transitions. [2021-02-24 03:27:49,599 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 259 transitions. Word has length 158 [2021-02-24 03:27:49,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 03:27:49,600 INFO L480 AbstractCegarLoop]: Abstraction has 239 states and 259 transitions. [2021-02-24 03:27:49,600 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-24 03:27:49,601 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 259 transitions. [2021-02-24 03:27:49,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-02-24 03:27:49,605 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:27:49,606 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] [2021-02-24 03:27:49,606 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-24 03:27:49,606 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:27:49,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:27:49,607 INFO L82 PathProgramCache]: Analyzing trace with hash -1681763398, now seen corresponding path program 1 times [2021-02-24 03:27:49,607 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:27:49,608 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1931909050] [2021-02-24 03:27:49,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:27:49,612 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:27:49,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:27:49,751 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:27:49,751 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:27:49,752 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:27:49,753 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:27:49,759 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:27:49,759 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:27:50,096 WARN L202 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-24 03:27:50,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 03:27:50,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:27:50,141 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:27:50,142 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:27:50,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-24 03:27:50,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:27:50,150 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:27:50,150 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:27:50,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-24 03:27:50,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:27:50,152 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:27:50,153 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:27:50,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-24 03:27:50,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:27:50,156 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:27:50,156 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:27:50,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-24 03:27:50,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:27:50,159 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:27:50,159 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:27:50,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-02-24 03:27:50,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:27:50,162 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:27:50,162 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:27:50,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-02-24 03:27:50,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:27:50,165 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:27:50,166 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:27:50,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-02-24 03:27:50,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:27:50,169 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:27:50,169 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:27:50,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 03:27:50,227 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1931909050] [2021-02-24 03:27:50,228 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 03:27:50,228 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-24 03:27:50,228 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309986535] [2021-02-24 03:27:50,229 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-24 03:27:50,229 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 03:27:50,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-24 03:27:50,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-24 03:27:50,230 INFO L87 Difference]: Start difference. First operand 239 states and 259 transitions. Second operand 4 states. [2021-02-24 03:27:50,926 WARN L202 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-24 03:27:51,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 03:27:51,845 INFO L93 Difference]: Finished difference Result 348 states and 392 transitions. [2021-02-24 03:27:51,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-24 03:27:51,846 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 159 [2021-02-24 03:27:51,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 03:27:51,850 INFO L225 Difference]: With dead ends: 348 [2021-02-24 03:27:51,850 INFO L226 Difference]: Without dead ends: 264 [2021-02-24 03:27:51,852 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-24 03:27:51,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2021-02-24 03:27:51,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 229. [2021-02-24 03:27:51,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2021-02-24 03:27:51,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 246 transitions. [2021-02-24 03:27:51,940 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 246 transitions. Word has length 159 [2021-02-24 03:27:51,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 03:27:51,941 INFO L480 AbstractCegarLoop]: Abstraction has 229 states and 246 transitions. [2021-02-24 03:27:51,941 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-24 03:27:51,941 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 246 transitions. [2021-02-24 03:27:51,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2021-02-24 03:27:51,944 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:27:51,944 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] [2021-02-24 03:27:51,944 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-24 03:27:51,944 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:27:51,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:27:51,945 INFO L82 PathProgramCache]: Analyzing trace with hash -890344774, now seen corresponding path program 1 times [2021-02-24 03:27:51,945 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:27:51,945 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [43940730] [2021-02-24 03:27:51,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:27:51,949 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:27:51,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:27:52,033 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:27:52,034 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:27:52,034 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:27:52,035 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:27:52,038 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:27:52,039 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:27:52,043 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:27:52,043 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:27:52,044 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:27:52,045 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 03:27:52,050 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:27:52,050 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:27:52,388 WARN L202 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-24 03:27:52,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 03:27:52,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:27:52,430 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:27:52,431 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:27:52,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-24 03:27:52,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:27:52,449 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:27:52,450 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:27:52,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-24 03:27:52,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:27:52,452 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:27:52,453 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:27:52,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-24 03:27:52,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:27:52,461 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:27:52,461 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:27:52,470 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:27:52,471 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 03:27:52,484 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:27:52,485 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 03:27:52,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-24 03:27:52,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:27:52,502 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:27:52,502 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:27:52,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-02-24 03:27:52,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:27:52,518 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:27:52,519 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:27:52,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-02-24 03:27:52,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:27:52,534 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:27:52,535 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:27:52,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-02-24 03:27:52,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:27:52,537 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:27:52,538 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:27:52,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-02-24 03:27:52,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:27:52,545 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:27:52,546 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:27:52,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 03:27:52,594 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [43940730] [2021-02-24 03:27:52,595 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 03:27:52,595 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-24 03:27:52,595 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841597553] [2021-02-24 03:27:52,596 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-24 03:27:52,597 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 03:27:52,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-24 03:27:52,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-24 03:27:52,602 INFO L87 Difference]: Start difference. First operand 229 states and 246 transitions. Second operand 10 states. [2021-02-24 03:27:53,185 WARN L202 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-24 03:27:53,614 WARN L202 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-24 03:27:53,984 WARN L202 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-24 03:27:54,365 WARN L202 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-24 03:27:54,728 WARN L202 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-24 03:27:55,069 WARN L202 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-24 03:27:56,110 WARN L202 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-24 03:27:58,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 03:27:58,153 INFO L93 Difference]: Finished difference Result 619 states and 724 transitions. [2021-02-24 03:27:58,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-02-24 03:27:58,154 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 172 [2021-02-24 03:27:58,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 03:27:58,160 INFO L225 Difference]: With dead ends: 619 [2021-02-24 03:27:58,160 INFO L226 Difference]: Without dead ends: 505 [2021-02-24 03:27:58,162 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2021-02-24 03:27:58,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 505 states. [2021-02-24 03:27:58,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 505 to 414. [2021-02-24 03:27:58,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 414 states. [2021-02-24 03:27:58,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 463 transitions. [2021-02-24 03:27:58,373 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 463 transitions. Word has length 172 [2021-02-24 03:27:58,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 03:27:58,374 INFO L480 AbstractCegarLoop]: Abstraction has 414 states and 463 transitions. [2021-02-24 03:27:58,374 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-24 03:27:58,374 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 463 transitions. [2021-02-24 03:27:58,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-02-24 03:27:58,378 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:27:58,378 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] [2021-02-24 03:27:58,378 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-24 03:27:58,379 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:27:58,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:27:58,379 INFO L82 PathProgramCache]: Analyzing trace with hash -300762435, now seen corresponding path program 1 times [2021-02-24 03:27:58,380 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:27:58,380 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1381237874] [2021-02-24 03:27:58,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:27:58,383 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:27:58,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:27:58,474 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:27:58,475 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:27:58,478 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:27:58,479 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:27:58,479 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:27:58,480 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:27:58,480 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:27:58,482 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:27:58,483 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:27:58,483 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:27:58,484 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:27:58,486 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:27:58,491 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:27:58,491 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:27:58,496 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:27:58,497 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:27:58,883 WARN L202 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-24 03:27:58,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 03:27:58,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:27:58,945 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:27:58,946 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:27:58,950 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:27:58,951 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 03:27:58,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-24 03:27:58,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:27:58,960 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:27:58,960 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:27:58,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-24 03:27:58,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:27:58,964 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:27:58,965 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:27:58,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-24 03:27:58,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:27:58,969 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:27:58,971 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:27:58,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-24 03:27:58,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:27:58,975 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:27:58,976 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:27:58,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-02-24 03:27:58,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:27:58,998 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:27:58,998 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:27:58,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-02-24 03:27:59,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:27:59,003 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:27:59,004 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:27:59,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-02-24 03:27:59,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:27:59,009 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:27:59,010 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:27:59,010 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:27:59,011 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:27:59,022 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:27:59,022 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:27:59,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2021-02-24 03:27:59,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:27:59,035 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:27:59,036 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:27:59,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 03:27:59,090 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1381237874] [2021-02-24 03:27:59,090 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 03:27:59,090 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-24 03:27:59,090 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408325071] [2021-02-24 03:27:59,091 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-24 03:27:59,091 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 03:27:59,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-24 03:27:59,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-24 03:27:59,092 INFO L87 Difference]: Start difference. First operand 414 states and 463 transitions. Second operand 9 states. [2021-02-24 03:27:59,708 WARN L202 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-24 03:28:01,628 WARN L202 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-24 03:28:02,019 WARN L202 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-24 03:28:02,387 WARN L202 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-24 03:28:02,790 WARN L202 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-24 03:28:03,148 WARN L202 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-24 03:28:03,505 WARN L202 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-24 03:28:03,849 WARN L202 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-24 03:28:04,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 03:28:04,718 INFO L93 Difference]: Finished difference Result 1090 states and 1320 transitions. [2021-02-24 03:28:04,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-02-24 03:28:04,719 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 177 [2021-02-24 03:28:04,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 03:28:04,727 INFO L225 Difference]: With dead ends: 1090 [2021-02-24 03:28:04,727 INFO L226 Difference]: Without dead ends: 791 [2021-02-24 03:28:04,729 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2021-02-24 03:28:04,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 791 states. [2021-02-24 03:28:05,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 791 to 692. [2021-02-24 03:28:05,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 692 states. [2021-02-24 03:28:05,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 798 transitions. [2021-02-24 03:28:05,085 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 798 transitions. Word has length 177 [2021-02-24 03:28:05,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 03:28:05,086 INFO L480 AbstractCegarLoop]: Abstraction has 692 states and 798 transitions. [2021-02-24 03:28:05,086 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-24 03:28:05,086 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 798 transitions. [2021-02-24 03:28:05,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-02-24 03:28:05,091 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:28:05,091 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] [2021-02-24 03:28:05,091 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-24 03:28:05,091 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:28:05,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:28:05,092 INFO L82 PathProgramCache]: Analyzing trace with hash -1111398584, now seen corresponding path program 1 times [2021-02-24 03:28:05,092 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:28:05,093 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1665491102] [2021-02-24 03:28:05,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:28:05,096 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:28:05,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-24 03:28:05,178 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-24 03:28:05,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-24 03:28:05,259 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-24 03:28:05,465 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-24 03:28:05,465 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-24 03:28:05,466 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-24 03:28:05,490 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.02 03:28:05 BoogieIcfgContainer [2021-02-24 03:28:05,490 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-24 03:28:05,491 INFO L168 Benchmark]: Toolchain (without parser) took 21713.50 ms. Allocated memory was 174.1 MB in the beginning and 562.0 MB in the end (delta: 388.0 MB). Free memory was 153.9 MB in the beginning and 428.2 MB in the end (delta: -274.4 MB). Peak memory consumption was 113.4 MB. Max. memory is 8.0 GB. [2021-02-24 03:28:05,491 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 174.1 MB. Free memory is still 146.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-24 03:28:05,492 INFO L168 Benchmark]: CACSL2BoogieTranslator took 673.26 ms. Allocated memory is still 174.1 MB. Free memory was 152.8 MB in the beginning and 148.9 MB in the end (delta: 3.9 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2021-02-24 03:28:05,492 INFO L168 Benchmark]: Boogie Preprocessor took 165.57 ms. Allocated memory is still 174.1 MB. Free memory was 148.9 MB in the beginning and 145.0 MB in the end (delta: 3.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2021-02-24 03:28:05,493 INFO L168 Benchmark]: RCFGBuilder took 1766.96 ms. Allocated memory was 174.1 MB in the beginning and 223.3 MB in the end (delta: 49.3 MB). Free memory was 145.0 MB in the beginning and 135.4 MB in the end (delta: 9.6 MB). Peak memory consumption was 59.6 MB. Max. memory is 8.0 GB. [2021-02-24 03:28:05,493 INFO L168 Benchmark]: TraceAbstraction took 19084.09 ms. Allocated memory was 223.3 MB in the beginning and 562.0 MB in the end (delta: 338.7 MB). Free memory was 135.4 MB in the beginning and 428.2 MB in the end (delta: -292.9 MB). Peak memory consumption was 45.8 MB. Max. memory is 8.0 GB. [2021-02-24 03:28:05,496 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 174.1 MB. Free memory is still 146.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 673.26 ms. Allocated memory is still 174.1 MB. Free memory was 152.8 MB in the beginning and 148.9 MB in the end (delta: 3.9 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 165.57 ms. Allocated memory is still 174.1 MB. Free memory was 148.9 MB in the beginning and 145.0 MB in the end (delta: 3.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1766.96 ms. Allocated memory was 174.1 MB in the beginning and 223.3 MB in the end (delta: 49.3 MB). Free memory was 145.0 MB in the beginning and 135.4 MB in the end (delta: 9.6 MB). Peak memory consumption was 59.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 19084.09 ms. Allocated memory was 223.3 MB in the beginning and 562.0 MB in the end (delta: 338.7 MB). Free memory was 135.4 MB in the beginning and 428.2 MB in the end (delta: -292.9 MB). Peak memory consumption was 45.8 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 46]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L51] int cleanupTimeShifts = 4; [L324] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L598] int pumpRunning = 0; [L599] int systemActive = 1; [L808] int waterLevel = 1; [L809] int methaneLevelCritical = 0; [L132] int retValue_acc ; [L133] int tmp ; [L137] FCALL select_helpers() [L138] FCALL select_features() [L139] CALL, EXPR valid_product() [L798] int retValue_acc ; [L801] retValue_acc = 1 [L802] return (retValue_acc); [L139] RET, EXPR valid_product() [L139] tmp = valid_product() [L141] COND TRUE \read(tmp) [L143] FCALL setup() [L144] CALL runTest() [L123] CALL test() [L524] int splverifierCounter ; [L525] int tmp ; [L526] int tmp___0 ; [L527] int tmp___1 ; [L528] int tmp___2 ; [L531] splverifierCounter = 0 [L533] COND TRUE 1 [L535] COND TRUE splverifierCounter < 4 [L541] tmp = __VERIFIER_nondet_int() [L543] COND TRUE \read(tmp) [L545] CALL waterRise() [L826] COND TRUE waterLevel < 2 [L827] waterLevel = waterLevel + 1 [L545] RET waterRise() [L551] tmp___0 = __VERIFIER_nondet_int() [L553] COND FALSE !(\read(tmp___0)) [L561] tmp___2 = __VERIFIER_nondet_int() [L563] COND FALSE !(\read(tmp___2)) [L569] tmp___1 = __VERIFIER_nondet_int() [L571] COND TRUE \read(tmp___1) [L573] CALL stopSystem() [L752] COND FALSE !(\read(pumpRunning)) [L759] systemActive = 0 [L573] RET stopSystem() [L580] CALL timeShift() [L606] COND FALSE !(\read(pumpRunning)) [L613] COND FALSE !(\read(systemActive)) [L621] CALL __utac_acc__Specification3_spec__1() [L889] int tmp ; [L890] int tmp___0 ; [L891] int tmp___1 ; [L895] CALL, EXPR isMethaneLevelCritical() [L847] int retValue_acc ; [L850] retValue_acc = methaneLevelCritical [L851] return (retValue_acc); [L895] RET, EXPR isMethaneLevelCritical() [L895] tmp = isMethaneLevelCritical() [L897] COND FALSE !(\read(tmp)) [L901] CALL, EXPR getWaterLevel() [L879] int retValue_acc ; [L882] retValue_acc = waterLevel [L883] return (retValue_acc); [L901] RET, EXPR getWaterLevel() [L901] tmp___0 = getWaterLevel() [L903] COND TRUE tmp___0 == 2 [L905] CALL, EXPR isPumpRunning() [L704] int retValue_acc ; [L707] retValue_acc = pumpRunning [L708] return (retValue_acc); [L905] RET, EXPR isPumpRunning() [L905] tmp___1 = isPumpRunning() [L907] COND FALSE !(\read(tmp___1)) [L911] CALL __automaton_fail() [L46] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 618 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 18.9s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 14.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 930 SDtfs, 1285 SDslu, 1568 SDs, 0 SdLazy, 2814 SolverSat, 479 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 116 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 6.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=692occurred 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: 0.8s AutomataMinimizationTime, 4 MinimizatonAttempts, 267 StatesRemovedByMinimization, 4 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...