/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_product09.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 18:56:03,648 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 18:56:03,651 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 18:56:03,685 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 18:56:03,689 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 18:56:03,690 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 18:56:03,692 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 18:56:03,700 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 18:56:03,704 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 18:56:03,709 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 18:56:03,711 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 18:56:03,713 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 18:56:03,713 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 18:56:03,716 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 18:56:03,718 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 18:56:03,720 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 18:56:03,724 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 18:56:03,735 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 18:56:03,742 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 18:56:03,748 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 18:56:03,751 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 18:56:03,753 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 18:56:03,754 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 18:56:03,757 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 18:56:03,760 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-21 18:56:03,760 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-21 18:56:03,761 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-21 18:56:03,768 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-21 18:56:03,769 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-21 18:56:03,770 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-21 18:56:03,770 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-21 18:56:03,771 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-21 18:56:03,773 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-21 18:56:03,773 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-21 18:56:03,774 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-21 18:56:03,775 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-21 18:56:03,775 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-21 18:56:03,776 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-21 18:56:03,776 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 18:56:03,777 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 18:56:03,778 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 18:56:03,779 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-21 18:56:03,803 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 18:56:03,803 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 18:56:03,808 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 18:56:03,808 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 18:56:03,808 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 18:56:03,808 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 18:56:03,809 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 18:56:03,809 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 18:56:03,809 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 18:56:03,809 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 18:56:03,810 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 18:56:03,810 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 18:56:03,811 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 18:56:03,811 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 18:56:03,811 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 18:56:03,811 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 18:56:03,811 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 18:56:03,812 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 18:56:03,812 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 18:56:03,812 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 18:56:03,812 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 18:56:03,812 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 18:56:03,812 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 18:56:04,211 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 18:56:04,242 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 18:56:04,245 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 18:56:04,247 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 18:56:04,248 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 18:56:04,249 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product09.cil.c [2021-02-21 18:56:04,337 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e53b9e220/f26862bbeee848fd928a449ccff9d89c/FLAG586a92a46 [2021-02-21 18:56:05,107 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 18:56:05,108 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product09.cil.c [2021-02-21 18:56:05,133 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e53b9e220/f26862bbeee848fd928a449ccff9d89c/FLAG586a92a46 [2021-02-21 18:56:05,336 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e53b9e220/f26862bbeee848fd928a449ccff9d89c [2021-02-21 18:56:05,339 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 18:56:05,350 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 18:56:05,352 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 18:56:05,353 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 18:56:05,359 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 18:56:05,359 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 06:56:05" (1/1) ... [2021-02-21 18:56:05,361 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@674deff2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:56:05, skipping insertion in model container [2021-02-21 18:56:05,361 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 06:56:05" (1/1) ... [2021-02-21 18:56:05,370 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 18:56:05,436 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 18:56:05,625 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_product09.cil.c[2573,2586] [2021-02-21 18:56:05,736 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 18:56:05,749 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 18:56:05,772 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_product09.cil.c[2573,2586] [2021-02-21 18:56:05,860 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 18:56:05,899 INFO L208 MainTranslator]: Completed translation [2021-02-21 18:56:05,900 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:56:05 WrapperNode [2021-02-21 18:56:05,901 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 18:56:05,902 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 18:56:05,902 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 18:56:05,902 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 18:56:05,914 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:56:05" (1/1) ... [2021-02-21 18:56:05,915 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:56:05" (1/1) ... [2021-02-21 18:56:05,934 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:56:05" (1/1) ... [2021-02-21 18:56:05,935 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:56:05" (1/1) ... [2021-02-21 18:56:05,982 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:56:05" (1/1) ... [2021-02-21 18:56:06,003 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:56:05" (1/1) ... [2021-02-21 18:56:06,015 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:56:05" (1/1) ... [2021-02-21 18:56:06,023 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 18:56:06,025 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 18:56:06,025 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 18:56:06,025 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 18:56:06,026 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:56:05" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 18:56:06,129 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 18:56:06,129 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 18:56:06,129 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-21 18:56:06,129 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 18:56:06,129 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-21 18:56:06,129 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-21 18:56:06,130 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-21 18:56:06,130 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-21 18:56:06,130 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 18:56:06,130 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-21 18:56:06,130 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-21 18:56:06,130 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-21 18:56:06,131 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-21 18:56:06,131 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__base [2021-02-21 18:56:06,131 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-21 18:56:06,131 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-21 18:56:06,131 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-21 18:56:06,131 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-21 18:56:06,132 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-21 18:56:06,132 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2021-02-21 18:56:06,132 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-21 18:56:06,132 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-21 18:56:06,132 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-21 18:56:06,132 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-21 18:56:06,133 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-21 18:56:06,133 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-21 18:56:06,133 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-21 18:56:06,133 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-21 18:56:06,133 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-21 18:56:06,133 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-21 18:56:06,133 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-21 18:56:06,134 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-21 18:56:06,134 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-21 18:56:06,134 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-21 18:56:06,134 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-21 18:56:06,134 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-21 18:56:06,134 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 18:56:06,134 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 18:56:06,135 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 18:56:06,135 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 18:56:06,135 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-21 18:56:06,135 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-21 18:56:06,135 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-21 18:56:06,135 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-21 18:56:06,135 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-21 18:56:06,136 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-21 18:56:06,136 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-21 18:56:06,136 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-21 18:56:06,136 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-21 18:56:06,136 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-21 18:56:06,136 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-21 18:56:06,136 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-21 18:56:06,137 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-21 18:56:06,137 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-21 18:56:06,137 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 18:56:06,137 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-21 18:56:06,137 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-21 18:56:06,137 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-21 18:56:06,137 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-21 18:56:06,137 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-21 18:56:06,138 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-21 18:56:06,138 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-21 18:56:06,138 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2021-02-21 18:56:06,138 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-21 18:56:06,138 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__base [2021-02-21 18:56:06,138 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-21 18:56:06,138 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-21 18:56:06,139 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-21 18:56:06,139 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-21 18:56:06,139 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-21 18:56:06,139 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-21 18:56:06,139 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-21 18:56:06,139 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-21 18:56:06,139 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 18:56:06,140 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-21 18:56:06,140 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-21 18:56:06,140 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 18:56:06,140 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-21 18:56:06,140 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-21 18:56:06,140 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 18:56:06,140 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-21 18:56:06,141 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-21 18:56:06,141 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-21 18:56:06,141 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 18:56:06,141 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 18:56:06,141 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 18:56:07,429 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 18:56:07,429 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-21 18:56:07,435 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 06:56:07 BoogieIcfgContainer [2021-02-21 18:56:07,435 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 18:56:07,461 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 18:56:07,461 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 18:56:07,468 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 18:56:07,468 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 06:56:05" (1/3) ... [2021-02-21 18:56:07,469 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47d8a349 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 06:56:07, skipping insertion in model container [2021-02-21 18:56:07,470 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:56:05" (2/3) ... [2021-02-21 18:56:07,470 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47d8a349 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 06:56:07, skipping insertion in model container [2021-02-21 18:56:07,470 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 06:56:07" (3/3) ... [2021-02-21 18:56:07,472 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product09.cil.c [2021-02-21 18:56:07,481 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 18:56:07,488 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 18:56:07,514 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 18:56:07,546 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 18:56:07,547 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 18:56:07,547 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 18:56:07,547 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 18:56:07,547 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 18:56:07,547 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 18:56:07,547 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 18:56:07,548 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 18:56:07,581 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states. [2021-02-21 18:56:07,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-02-21 18:56:07,610 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:56:07,611 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 18:56:07,612 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:56:07,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:56:07,622 INFO L82 PathProgramCache]: Analyzing trace with hash -1854146296, now seen corresponding path program 1 times [2021-02-21 18:56:07,633 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:56:07,634 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [414149124] [2021-02-21 18:56:07,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:56:07,715 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:56:07,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:08,170 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:08,172 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:08,173 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:08,174 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:08,487 WARN L202 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 18:56:08,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:56:08,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:08,619 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:08,620 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:08,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 18:56:08,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:08,641 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:08,641 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:08,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 18:56:08,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:08,671 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:08,672 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:08,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 18:56:08,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:08,676 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:08,676 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:08,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 18:56:08,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:08,679 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:08,679 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:08,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-21 18:56:08,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:08,683 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:08,684 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:08,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-21 18:56:08,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:08,687 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:08,688 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:08,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-02-21 18:56:08,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:08,691 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:08,692 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:08,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 18:56:08,738 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [414149124] [2021-02-21 18:56:08,740 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:56:08,740 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-21 18:56:08,741 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649320536] [2021-02-21 18:56:08,746 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-21 18:56:08,746 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:56:08,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-21 18:56:08,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 18:56:08,763 INFO L87 Difference]: Start difference. First operand 274 states. Second operand 3 states. [2021-02-21 18:56:10,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:56:10,132 INFO L93 Difference]: Finished difference Result 371 states and 444 transitions. [2021-02-21 18:56:10,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-21 18:56:10,134 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 158 [2021-02-21 18:56:10,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:56:10,150 INFO L225 Difference]: With dead ends: 371 [2021-02-21 18:56:10,150 INFO L226 Difference]: Without dead ends: 243 [2021-02-21 18:56:10,155 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 18:56:10,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2021-02-21 18:56:10,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 206. [2021-02-21 18:56:10,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2021-02-21 18:56:10,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 220 transitions. [2021-02-21 18:56:10,324 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 220 transitions. Word has length 158 [2021-02-21 18:56:10,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:56:10,326 INFO L480 AbstractCegarLoop]: Abstraction has 206 states and 220 transitions. [2021-02-21 18:56:10,326 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-21 18:56:10,326 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 220 transitions. [2021-02-21 18:56:10,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-02-21 18:56:10,335 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:56:10,336 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 18:56:10,336 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 18:56:10,336 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:56:10,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:56:10,340 INFO L82 PathProgramCache]: Analyzing trace with hash 454730193, now seen corresponding path program 1 times [2021-02-21 18:56:10,341 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:56:10,341 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1849565633] [2021-02-21 18:56:10,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:56:10,347 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:56:10,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:10,467 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:10,468 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:10,468 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:10,470 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:56:10,474 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:10,475 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:10,875 WARN L202 SmtUtils]: Spent 383.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 18:56:10,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:56:10,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:10,950 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:10,951 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:10,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 18:56:10,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:10,967 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:10,968 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:10,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 18:56:10,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:10,978 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:10,978 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:10,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 18:56:10,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:10,982 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:10,983 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:10,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 18:56:10,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:10,986 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:10,987 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:10,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-02-21 18:56:10,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:10,992 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:10,993 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:10,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-02-21 18:56:10,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:10,998 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:10,999 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:11,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-02-21 18:56:11,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:11,003 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:11,003 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:11,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 18:56:11,048 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1849565633] [2021-02-21 18:56:11,048 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:56:11,049 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 18:56:11,049 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881272233] [2021-02-21 18:56:11,052 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 18:56:11,052 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:56:11,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 18:56:11,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 18:56:11,053 INFO L87 Difference]: Start difference. First operand 206 states and 220 transitions. Second operand 4 states. [2021-02-21 18:56:11,796 WARN L202 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 18:56:12,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:56:12,457 INFO L93 Difference]: Finished difference Result 287 states and 318 transitions. [2021-02-21 18:56:12,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-21 18:56:12,458 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 159 [2021-02-21 18:56:12,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:56:12,461 INFO L225 Difference]: With dead ends: 287 [2021-02-21 18:56:12,462 INFO L226 Difference]: Without dead ends: 226 [2021-02-21 18:56:12,464 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 [2021-02-21 18:56:12,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2021-02-21 18:56:12,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 196. [2021-02-21 18:56:12,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2021-02-21 18:56:12,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 207 transitions. [2021-02-21 18:56:12,548 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 207 transitions. Word has length 159 [2021-02-21 18:56:12,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:56:12,549 INFO L480 AbstractCegarLoop]: Abstraction has 196 states and 207 transitions. [2021-02-21 18:56:12,549 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 18:56:12,549 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 207 transitions. [2021-02-21 18:56:12,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-02-21 18:56:12,552 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:56:12,552 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 18:56:12,552 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 18:56:12,553 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:56:12,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:56:12,553 INFO L82 PathProgramCache]: Analyzing trace with hash 1483944557, now seen corresponding path program 1 times [2021-02-21 18:56:12,554 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:56:12,554 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [260654869] [2021-02-21 18:56:12,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:56:12,558 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:56:12,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:12,637 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:12,637 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:56:12,641 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:12,641 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:56:12,645 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:12,646 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:56:12,651 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:12,651 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 18:56:12,658 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:12,659 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:12,995 WARN L202 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 18:56:12,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:56:13,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:13,047 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:13,048 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:13,049 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:13,049 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 18:56:13,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 18:56:13,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:13,061 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:13,062 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:13,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 18:56:13,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:13,067 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:13,069 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:13,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 18:56:13,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:13,081 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:13,081 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:13,089 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:13,091 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 18:56:13,111 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-21 18:56:13,113 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-21 18:56:13,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 18:56:13,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:13,133 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:13,134 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:13,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-21 18:56:13,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:13,137 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:13,138 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:13,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-02-21 18:56:13,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:13,141 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:13,142 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:13,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-02-21 18:56:13,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:13,145 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:13,148 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:13,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 18:56:13,194 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [260654869] [2021-02-21 18:56:13,194 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:56:13,194 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-21 18:56:13,194 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737793400] [2021-02-21 18:56:13,195 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-21 18:56:13,195 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:56:13,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-21 18:56:13,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-21 18:56:13,196 INFO L87 Difference]: Start difference. First operand 196 states and 207 transitions. Second operand 9 states. [2021-02-21 18:56:13,931 WARN L202 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 18:56:14,388 WARN L202 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 18:56:14,753 WARN L202 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 18:56:15,153 WARN L202 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:56:15,517 WARN L202 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 18:56:15,877 WARN L202 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:56:16,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:56:16,959 INFO L93 Difference]: Finished difference Result 307 states and 343 transitions. [2021-02-21 18:56:16,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-21 18:56:16,961 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 168 [2021-02-21 18:56:16,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:56:16,970 INFO L225 Difference]: With dead ends: 307 [2021-02-21 18:56:16,971 INFO L226 Difference]: Without dead ends: 226 [2021-02-21 18:56:16,977 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-02-21 18:56:16,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2021-02-21 18:56:17,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 196. [2021-02-21 18:56:17,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2021-02-21 18:56:17,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 206 transitions. [2021-02-21 18:56:17,071 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 206 transitions. Word has length 168 [2021-02-21 18:56:17,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:56:17,071 INFO L480 AbstractCegarLoop]: Abstraction has 196 states and 206 transitions. [2021-02-21 18:56:17,072 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-21 18:56:17,072 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 206 transitions. [2021-02-21 18:56:17,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-02-21 18:56:17,074 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:56:17,074 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] [2021-02-21 18:56:17,074 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 18:56:17,075 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:56:17,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:56:17,075 INFO L82 PathProgramCache]: Analyzing trace with hash -1149653709, now seen corresponding path program 1 times [2021-02-21 18:56:17,076 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:56:17,076 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1067365192] [2021-02-21 18:56:17,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:56:17,079 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:56:17,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:17,154 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:17,155 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:56:17,158 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:17,158 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:56:17,159 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:17,160 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:56:17,160 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:17,161 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:56:17,161 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:17,163 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:56:17,164 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:17,164 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:56:17,168 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:17,168 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:56:17,174 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:17,175 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:17,463 WARN L202 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 18:56:17,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:56:17,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:17,515 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:17,516 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:17,517 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:17,517 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 18:56:17,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 18:56:17,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:17,526 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:17,526 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:17,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 18:56:17,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:17,530 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:17,531 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:17,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 18:56:17,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:17,537 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:17,538 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:17,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 18:56:17,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:17,542 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:17,542 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:17,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-02-21 18:56:17,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:17,545 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:17,545 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:17,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-02-21 18:56:17,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:17,548 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:17,549 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:17,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-02-21 18:56:17,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:17,557 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:17,558 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:17,559 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:17,560 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:56:17,572 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:17,572 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:56:17,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-02-21 18:56:17,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:17,585 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:17,585 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:17,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 18:56:17,687 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1067365192] [2021-02-21 18:56:17,688 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:56:17,688 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-21 18:56:17,688 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955841433] [2021-02-21 18:56:17,689 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-21 18:56:17,689 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:56:17,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-21 18:56:17,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-02-21 18:56:17,690 INFO L87 Difference]: Start difference. First operand 196 states and 206 transitions. Second operand 8 states. [2021-02-21 18:56:18,268 WARN L202 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 18:56:19,642 WARN L202 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:56:20,000 WARN L202 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 18:56:20,411 WARN L202 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:56:20,815 WARN L202 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 18:56:21,215 WARN L202 SmtUtils]: Spent 369.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 18:56:21,585 WARN L202 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:56:21,975 WARN L202 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:56:22,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:56:22,306 INFO L93 Difference]: Finished difference Result 373 states and 422 transitions. [2021-02-21 18:56:22,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-21 18:56:22,307 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 171 [2021-02-21 18:56:22,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:56:22,311 INFO L225 Difference]: With dead ends: 373 [2021-02-21 18:56:22,311 INFO L226 Difference]: Without dead ends: 292 [2021-02-21 18:56:22,312 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2021-02-21 18:56:22,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2021-02-21 18:56:22,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 267. [2021-02-21 18:56:22,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 267 states. [2021-02-21 18:56:22,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 289 transitions. [2021-02-21 18:56:22,473 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 289 transitions. Word has length 171 [2021-02-21 18:56:22,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:56:22,473 INFO L480 AbstractCegarLoop]: Abstraction has 267 states and 289 transitions. [2021-02-21 18:56:22,473 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-21 18:56:22,474 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 289 transitions. [2021-02-21 18:56:22,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-02-21 18:56:22,477 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:56:22,477 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] [2021-02-21 18:56:22,478 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-21 18:56:22,478 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:56:22,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:56:22,478 INFO L82 PathProgramCache]: Analyzing trace with hash -668012141, now seen corresponding path program 1 times [2021-02-21 18:56:22,479 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:56:22,479 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1438914206] [2021-02-21 18:56:22,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:56:22,483 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:56:22,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 18:56:22,563 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 18:56:22,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 18:56:22,643 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 18:56:22,831 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-21 18:56:22,831 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-21 18:56:22,833 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-21 18:56:22,856 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 06:56:22 BoogieIcfgContainer [2021-02-21 18:56:22,856 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 18:56:22,857 INFO L168 Benchmark]: Toolchain (without parser) took 17515.88 ms. Allocated memory was 168.8 MB in the beginning and 468.7 MB in the end (delta: 299.9 MB). Free memory was 143.6 MB in the beginning and 351.3 MB in the end (delta: -207.7 MB). Peak memory consumption was 93.7 MB. Max. memory is 8.0 GB. [2021-02-21 18:56:22,858 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 168.8 MB. Free memory was 142.1 MB in the beginning and 141.8 MB in the end (delta: 215.0 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 18:56:22,858 INFO L168 Benchmark]: CACSL2BoogieTranslator took 548.92 ms. Allocated memory is still 168.8 MB. Free memory was 142.4 MB in the beginning and 122.8 MB in the end (delta: 19.6 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. [2021-02-21 18:56:22,859 INFO L168 Benchmark]: Boogie Preprocessor took 121.60 ms. Allocated memory is still 168.8 MB. Free memory was 122.8 MB in the beginning and 119.0 MB in the end (delta: 3.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2021-02-21 18:56:22,860 INFO L168 Benchmark]: RCFGBuilder took 1433.21 ms. Allocated memory was 168.8 MB in the beginning and 203.4 MB in the end (delta: 34.6 MB). Free memory was 119.0 MB in the beginning and 181.7 MB in the end (delta: -62.8 MB). Peak memory consumption was 67.3 MB. Max. memory is 8.0 GB. [2021-02-21 18:56:22,860 INFO L168 Benchmark]: TraceAbstraction took 15395.02 ms. Allocated memory was 203.4 MB in the beginning and 468.7 MB in the end (delta: 265.3 MB). Free memory was 181.7 MB in the beginning and 351.3 MB in the end (delta: -169.6 MB). Peak memory consumption was 95.7 MB. Max. memory is 8.0 GB. [2021-02-21 18:56:22,863 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 168.8 MB. Free memory was 142.1 MB in the beginning and 141.8 MB in the end (delta: 215.0 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 548.92 ms. Allocated memory is still 168.8 MB. Free memory was 142.4 MB in the beginning and 122.8 MB in the end (delta: 19.6 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 121.60 ms. Allocated memory is still 168.8 MB. Free memory was 122.8 MB in the beginning and 119.0 MB in the end (delta: 3.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1433.21 ms. Allocated memory was 168.8 MB in the beginning and 203.4 MB in the end (delta: 34.6 MB). Free memory was 119.0 MB in the beginning and 181.7 MB in the end (delta: -62.8 MB). Peak memory consumption was 67.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 15395.02 ms. Allocated memory was 203.4 MB in the beginning and 468.7 MB in the end (delta: 265.3 MB). Free memory was 181.7 MB in the beginning and 351.3 MB in the end (delta: -169.6 MB). Peak memory consumption was 95.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 150]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L42] int cleanupTimeShifts = 4; [L226] int pumpRunning = 0; [L227] int systemActive = 1; [L591] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L788] int waterLevel = 1; [L789] int methaneLevelCritical = 0; [L123] int retValue_acc ; [L124] int tmp ; [L128] FCALL select_helpers() [L129] FCALL select_features() [L130] CALL, EXPR valid_product() [L413] int retValue_acc ; [L416] retValue_acc = 1 [L417] return (retValue_acc); [L130] RET, EXPR valid_product() [L130] tmp = valid_product() [L132] COND TRUE \read(tmp) [L134] FCALL setup() [L135] CALL runTest() [L114] CALL test() [L156] int splverifierCounter ; [L157] int tmp ; [L158] int tmp___0 ; [L159] int tmp___1 ; [L160] int tmp___2 ; [L163] splverifierCounter = 0 [L165] COND TRUE 1 [L167] COND TRUE splverifierCounter < 4 [L173] tmp = __VERIFIER_nondet_int() [L175] COND TRUE \read(tmp) [L177] CALL waterRise() [L806] COND TRUE waterLevel < 2 [L807] waterLevel = waterLevel + 1 [L177] RET waterRise() [L183] tmp___0 = __VERIFIER_nondet_int() [L185] COND FALSE !(\read(tmp___0)) [L193] tmp___2 = __VERIFIER_nondet_int() [L195] COND TRUE \read(tmp___2) [L208] CALL timeShift() [L234] COND FALSE !(\read(pumpRunning)) [L241] COND TRUE \read(systemActive) [L243] FCALL processEnvironment() [L249] CALL __utac_acc__Specification3_spec__1() [L354] int tmp ; [L355] int tmp___0 ; [L356] int tmp___1 ; [L360] CALL, EXPR isMethaneLevelCritical() [L827] int retValue_acc ; [L830] retValue_acc = methaneLevelCritical [L831] return (retValue_acc); [L360] RET, EXPR isMethaneLevelCritical() [L360] tmp = isMethaneLevelCritical() [L362] COND FALSE !(\read(tmp)) [L366] CALL, EXPR getWaterLevel() [L859] int retValue_acc ; [L862] retValue_acc = waterLevel [L863] return (retValue_acc); [L366] RET, EXPR getWaterLevel() [L366] tmp___0 = getWaterLevel() [L368] COND TRUE tmp___0 == 2 [L370] CALL, EXPR isPumpRunning() [L307] int retValue_acc ; [L310] retValue_acc = pumpRunning [L311] return (retValue_acc); [L370] RET, EXPR isPumpRunning() [L370] tmp___1 = isPumpRunning() [L372] COND FALSE !(\read(tmp___1)) [L376] CALL __automaton_fail() [L150] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 36 procedures, 596 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 15.2s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 11.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 755 SDtfs, 704 SDslu, 1099 SDs, 0 SdLazy, 1740 SolverSat, 225 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 107 GetRequests, 75 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 6.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=274occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 4 MinimizatonAttempts, 122 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...