/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_product02.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 16:20:38,575 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 16:20:38,580 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 16:20:38,635 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-23 16:20:38,636 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-23 16:20:38,641 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-23 16:20:38,645 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-23 16:20:38,653 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-23 16:20:38,656 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-23 16:20:38,665 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-23 16:20:38,666 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-23 16:20:38,667 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-23 16:20:38,667 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 16:20:38,669 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 16:20:38,672 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 16:20:38,689 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 16:20:38,691 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 16:20:38,692 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 16:20:38,694 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 16:20:38,696 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 16:20:38,698 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 16:20:38,699 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 16:20:38,700 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 16:20:38,701 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 16:20:38,706 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-23 16:20:38,706 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-23 16:20:38,706 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-23 16:20:38,707 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-23 16:20:38,708 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-23 16:20:38,714 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-23 16:20:38,714 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-23 16:20:38,715 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-23 16:20:38,716 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-23 16:20:38,717 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-23 16:20:38,718 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-23 16:20:38,719 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-23 16:20:38,720 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-23 16:20:38,720 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-23 16:20:38,720 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 16:20:38,721 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 16:20:38,722 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 16:20:38,723 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-23 16:20:38,743 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 16:20:38,743 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 16:20:38,748 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 16:20:38,748 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 16:20:38,749 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 16:20:38,749 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 16:20:38,749 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 16:20:38,750 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 16:20:38,750 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 16:20:38,750 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 16:20:38,751 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 16:20:38,752 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 16:20:38,752 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 16:20:38,752 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 16:20:38,752 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 16:20:38,752 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 16:20:38,753 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 16:20:38,753 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 16:20:38,753 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 16:20:38,753 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 16:20:38,754 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 16:20:38,754 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 16:20:38,754 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 16:20:39,167 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 16:20:39,194 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 16:20:39,197 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 16:20:39,199 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 16:20:39,199 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 16:20:39,200 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product02.cil.c [2021-02-23 16:20:39,279 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f0939427d/9fd8ac4c530b4fb3a96b64262066c94d/FLAG0b697db49 [2021-02-23 16:20:39,972 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 16:20:39,973 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product02.cil.c [2021-02-23 16:20:39,987 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f0939427d/9fd8ac4c530b4fb3a96b64262066c94d/FLAG0b697db49 [2021-02-23 16:20:40,233 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f0939427d/9fd8ac4c530b4fb3a96b64262066c94d [2021-02-23 16:20:40,237 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 16:20:40,253 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 16:20:40,256 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 16:20:40,256 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 16:20:40,260 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 16:20:40,261 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 04:20:40" (1/1) ... [2021-02-23 16:20:40,263 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1bed1c3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:20:40, skipping insertion in model container [2021-02-23 16:20:40,263 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 04:20:40" (1/1) ... [2021-02-23 16:20:40,272 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 16:20:40,342 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 16:20:40,508 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_product02.cil.c[1817,1830] [2021-02-23 16:20:40,671 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 16:20:40,683 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 16:20:40,704 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_product02.cil.c[1817,1830] [2021-02-23 16:20:40,777 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 16:20:40,828 INFO L208 MainTranslator]: Completed translation [2021-02-23 16:20:40,829 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:20:40 WrapperNode [2021-02-23 16:20:40,829 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 16:20:40,831 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 16:20:40,831 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 16:20:40,831 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 16:20:40,849 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:20:40" (1/1) ... [2021-02-23 16:20:40,850 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:20:40" (1/1) ... [2021-02-23 16:20:40,895 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:20:40" (1/1) ... [2021-02-23 16:20:40,896 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:20:40" (1/1) ... [2021-02-23 16:20:40,958 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:20:40" (1/1) ... [2021-02-23 16:20:40,978 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:20:40" (1/1) ... [2021-02-23 16:20:40,988 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:20:40" (1/1) ... [2021-02-23 16:20:41,003 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 16:20:41,007 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 16:20:41,007 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 16:20:41,007 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 16:20:41,010 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:20:40" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 16:20:41,139 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 16:20:41,139 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 16:20:41,139 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-23 16:20:41,139 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 16:20:41,156 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-23 16:20:41,157 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-23 16:20:41,157 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-23 16:20:41,157 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-23 16:20:41,158 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-23 16:20:41,158 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-23 16:20:41,159 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-23 16:20:41,159 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-23 16:20:41,159 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-23 16:20:41,159 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-23 16:20:41,160 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-23 16:20:41,160 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-23 16:20:41,160 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-23 16:20:41,161 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-23 16:20:41,161 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-23 16:20:41,162 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-23 16:20:41,164 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-23 16:20:41,164 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-23 16:20:41,164 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2021-02-23 16:20:41,165 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2021-02-23 16:20:41,165 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-23 16:20:41,165 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-23 16:20:41,165 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-23 16:20:41,165 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-23 16:20:41,165 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-23 16:20:41,166 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 16:20:41,166 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-23 16:20:41,166 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-23 16:20:41,166 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-23 16:20:41,167 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-23 16:20:41,167 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-23 16:20:41,167 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-23 16:20:41,167 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 16:20:41,167 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 16:20:41,167 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 16:20:41,168 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 16:20:41,168 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 16:20:41,168 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-23 16:20:41,168 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-23 16:20:41,168 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-23 16:20:41,168 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-23 16:20:41,169 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-23 16:20:41,169 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-23 16:20:41,169 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-23 16:20:41,169 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-23 16:20:41,169 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-23 16:20:41,169 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-23 16:20:41,170 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-23 16:20:41,170 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 16:20:41,170 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-23 16:20:41,170 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-23 16:20:41,170 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 16:20:41,170 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-23 16:20:41,171 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-23 16:20:41,171 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 16:20:41,171 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-23 16:20:41,171 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-23 16:20:41,171 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-23 16:20:41,172 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-23 16:20:41,172 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-23 16:20:41,172 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-23 16:20:41,172 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-23 16:20:41,172 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-23 16:20:41,172 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-23 16:20:41,173 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-23 16:20:41,173 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-23 16:20:41,173 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2021-02-23 16:20:41,173 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2021-02-23 16:20:41,173 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-23 16:20:41,174 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-23 16:20:41,174 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-23 16:20:41,174 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-23 16:20:41,174 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-23 16:20:41,175 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-23 16:20:41,175 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-23 16:20:41,175 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-23 16:20:41,176 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-23 16:20:41,176 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-23 16:20:41,176 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 16:20:41,176 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 16:20:41,177 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 16:20:41,178 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 16:20:42,427 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 16:20:42,427 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-23 16:20:42,430 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 04:20:42 BoogieIcfgContainer [2021-02-23 16:20:42,431 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 16:20:42,433 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 16:20:42,433 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 16:20:42,437 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 16:20:42,437 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 04:20:40" (1/3) ... [2021-02-23 16:20:42,438 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65873abd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 04:20:42, skipping insertion in model container [2021-02-23 16:20:42,438 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:20:40" (2/3) ... [2021-02-23 16:20:42,438 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65873abd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 04:20:42, skipping insertion in model container [2021-02-23 16:20:42,439 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 04:20:42" (3/3) ... [2021-02-23 16:20:42,440 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product02.cil.c [2021-02-23 16:20:42,447 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 16:20:42,453 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 16:20:42,474 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 16:20:42,499 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 16:20:42,499 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 16:20:42,499 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-23 16:20:42,499 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 16:20:42,499 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 16:20:42,500 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 16:20:42,500 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 16:20:42,500 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 16:20:42,524 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states. [2021-02-23 16:20:42,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-02-23 16:20:42,547 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:20:42,548 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 16:20:42,549 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:20:42,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:20:42,555 INFO L82 PathProgramCache]: Analyzing trace with hash -30085744, now seen corresponding path program 1 times [2021-02-23 16:20:42,565 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:20:42,565 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1408612999] [2021-02-23 16:20:42,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:20:42,654 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:20:42,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:20:43,026 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:43,027 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:20:43,028 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:43,029 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:20:43,345 WARN L202 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:20:43,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:20:43,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:20:43,444 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:43,446 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:20:43,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:20:43,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:20:43,475 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:43,475 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:20:43,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:20:43,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:20:43,483 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:43,484 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:20:43,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:20:43,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:20:43,495 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:43,496 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:20:43,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:20:43,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:20:43,513 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:43,515 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:20:43,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-23 16:20:43,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:20:43,525 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:43,526 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:20:43,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-23 16:20:43,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:20:43,530 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:43,531 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:20:43,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-02-23 16:20:43,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:20:43,534 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:43,535 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:20:43,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:20:43,583 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1408612999] [2021-02-23 16:20:43,585 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:20:43,586 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-23 16:20:43,586 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628083017] [2021-02-23 16:20:43,591 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-23 16:20:43,592 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:20:43,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-23 16:20:43,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 16:20:43,608 INFO L87 Difference]: Start difference. First operand 268 states. Second operand 3 states. [2021-02-23 16:20:45,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:20:45,072 INFO L93 Difference]: Finished difference Result 380 states and 454 transitions. [2021-02-23 16:20:45,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-23 16:20:45,074 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 158 [2021-02-23 16:20:45,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:20:45,090 INFO L225 Difference]: With dead ends: 380 [2021-02-23 16:20:45,091 INFO L226 Difference]: Without dead ends: 248 [2021-02-23 16:20:45,096 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 [2021-02-23 16:20:45,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2021-02-23 16:20:45,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 210. [2021-02-23 16:20:45,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2021-02-23 16:20:45,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 224 transitions. [2021-02-23 16:20:45,239 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 224 transitions. Word has length 158 [2021-02-23 16:20:45,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:20:45,240 INFO L480 AbstractCegarLoop]: Abstraction has 210 states and 224 transitions. [2021-02-23 16:20:45,240 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-23 16:20:45,241 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 224 transitions. [2021-02-23 16:20:45,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-02-23 16:20:45,247 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:20:45,247 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 16:20:45,248 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 16:20:45,248 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:20:45,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:20:45,249 INFO L82 PathProgramCache]: Analyzing trace with hash -1393722099, now seen corresponding path program 1 times [2021-02-23 16:20:45,249 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:20:45,249 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1740818215] [2021-02-23 16:20:45,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:20:45,254 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:20:45,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:20:45,453 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:45,453 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:20:45,454 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:45,455 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:20:45,460 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:45,461 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:20:45,761 WARN L202 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:20:45,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:20:45,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:20:45,811 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:45,811 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:20:45,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:20:45,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:20:45,820 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:45,839 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:20:45,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:20:45,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:20:45,844 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:45,845 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:20:45,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:20:45,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:20:45,850 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:45,851 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:20:45,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:20:45,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:20:45,853 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:45,854 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:20:45,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-02-23 16:20:45,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:20:45,857 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:45,859 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:20:45,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-02-23 16:20:45,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:20:45,864 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:45,864 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:20:45,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-02-23 16:20:45,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:20:45,867 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:45,868 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:20:45,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:20:45,904 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1740818215] [2021-02-23 16:20:45,905 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:20:45,905 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 16:20:45,905 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537847515] [2021-02-23 16:20:45,908 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 16:20:45,908 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:20:45,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 16:20:45,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 16:20:45,910 INFO L87 Difference]: Start difference. First operand 210 states and 224 transitions. Second operand 4 states. [2021-02-23 16:20:46,669 WARN L202 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:20:47,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:20:47,343 INFO L93 Difference]: Finished difference Result 292 states and 324 transitions. [2021-02-23 16:20:47,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-23 16:20:47,344 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 159 [2021-02-23 16:20:47,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:20:47,348 INFO L225 Difference]: With dead ends: 292 [2021-02-23 16:20:47,348 INFO L226 Difference]: Without dead ends: 231 [2021-02-23 16:20:47,350 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 [2021-02-23 16:20:47,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2021-02-23 16:20:47,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 200. [2021-02-23 16:20:47,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2021-02-23 16:20:47,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 211 transitions. [2021-02-23 16:20:47,424 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 211 transitions. Word has length 159 [2021-02-23 16:20:47,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:20:47,425 INFO L480 AbstractCegarLoop]: Abstraction has 200 states and 211 transitions. [2021-02-23 16:20:47,425 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 16:20:47,425 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 211 transitions. [2021-02-23 16:20:47,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2021-02-23 16:20:47,427 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:20:47,428 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 16:20:47,428 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 16:20:47,428 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:20:47,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:20:47,429 INFO L82 PathProgramCache]: Analyzing trace with hash 193313457, now seen corresponding path program 1 times [2021-02-23 16:20:47,429 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:20:47,429 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1181327292] [2021-02-23 16:20:47,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:20:47,433 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:20:47,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:20:47,518 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:47,519 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:20:47,520 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:47,520 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:20:47,524 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:47,524 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:20:47,529 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:47,529 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:20:47,530 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:47,531 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:20:47,536 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:47,536 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:20:47,879 WARN L202 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:20:47,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:20:47,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:20:47,925 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:47,925 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:20:47,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:20:47,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:20:47,937 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:47,938 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:20:47,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:20:47,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:20:47,940 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:47,941 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:20:47,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:20:47,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:20:47,948 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:47,949 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:20:47,957 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:47,958 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:20:47,972 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:47,973 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:20:47,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:20:47,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:20:47,989 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:47,990 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:20:48,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-02-23 16:20:48,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:20:48,006 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:48,007 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:20:48,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-02-23 16:20:48,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:20:48,023 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:48,024 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:20:48,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-02-23 16:20:48,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:20:48,027 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:48,027 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:20:48,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-02-23 16:20:48,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:20:48,030 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:48,031 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:20:48,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:20:48,079 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1181327292] [2021-02-23 16:20:48,079 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:20:48,079 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-23 16:20:48,080 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785295180] [2021-02-23 16:20:48,080 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-23 16:20:48,080 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:20:48,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-23 16:20:48,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-23 16:20:48,082 INFO L87 Difference]: Start difference. First operand 200 states and 211 transitions. Second operand 10 states. [2021-02-23 16:20:48,767 WARN L202 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:20:49,190 WARN L202 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:20:49,542 WARN L202 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-23 16:20:49,897 WARN L202 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:20:50,272 WARN L202 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:20:50,650 WARN L202 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:20:51,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:20:51,791 INFO L93 Difference]: Finished difference Result 338 states and 386 transitions. [2021-02-23 16:20:51,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-23 16:20:51,792 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 172 [2021-02-23 16:20:51,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:20:51,795 INFO L225 Difference]: With dead ends: 338 [2021-02-23 16:20:51,795 INFO L226 Difference]: Without dead ends: 253 [2021-02-23 16:20:51,797 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2021-02-23 16:20:51,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2021-02-23 16:20:51,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 200. [2021-02-23 16:20:51,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2021-02-23 16:20:51,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 210 transitions. [2021-02-23 16:20:51,873 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 210 transitions. Word has length 172 [2021-02-23 16:20:51,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:20:51,874 INFO L480 AbstractCegarLoop]: Abstraction has 200 states and 210 transitions. [2021-02-23 16:20:51,874 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-23 16:20:51,874 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 210 transitions. [2021-02-23 16:20:51,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-02-23 16:20:51,876 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:20:51,877 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] [2021-02-23 16:20:51,877 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 16:20:51,877 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:20:51,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:20:51,878 INFO L82 PathProgramCache]: Analyzing trace with hash -1305722333, now seen corresponding path program 1 times [2021-02-23 16:20:51,878 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:20:51,878 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1710171522] [2021-02-23 16:20:51,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:20:51,881 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:20:51,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:20:51,957 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:51,958 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:20:51,961 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:51,961 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:20:51,962 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:51,962 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:20:51,963 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:51,963 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:20:51,964 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:51,964 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:20:51,965 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:51,965 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:20:51,971 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:51,972 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:20:51,977 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:51,978 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:20:52,299 WARN L202 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:20:52,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:20:52,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:20:52,351 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:52,351 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:20:52,352 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:52,353 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 16:20:52,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:20:52,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:20:52,368 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:52,369 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:20:52,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:20:52,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:20:52,372 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:52,372 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:20:52,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:20:52,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:20:52,375 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:52,376 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:20:52,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:20:52,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:20:52,379 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:52,379 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:20:52,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-02-23 16:20:52,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:20:52,390 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:52,391 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:20:52,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-23 16:20:52,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:20:52,393 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:52,394 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:20:52,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-02-23 16:20:52,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:20:52,397 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:52,397 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:20:52,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-02-23 16:20:52,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:20:52,401 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:52,402 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:20:52,402 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:52,403 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:20:52,414 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:52,415 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:20:52,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-02-23 16:20:52,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:20:52,430 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:52,430 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:20:52,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:20:52,472 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1710171522] [2021-02-23 16:20:52,472 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:20:52,472 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-23 16:20:52,472 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987141486] [2021-02-23 16:20:52,473 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-23 16:20:52,473 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:20:52,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-23 16:20:52,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-23 16:20:52,479 INFO L87 Difference]: Start difference. First operand 200 states and 210 transitions. Second operand 9 states. [2021-02-23 16:20:53,055 WARN L202 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:20:54,523 WARN L202 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:20:54,922 WARN L202 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:20:55,335 WARN L202 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:20:55,774 WARN L202 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:20:56,146 WARN L202 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:20:56,556 WARN L202 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:20:56,923 WARN L202 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:20:57,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:20:57,397 INFO L93 Difference]: Finished difference Result 430 states and 501 transitions. [2021-02-23 16:20:57,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-02-23 16:20:57,397 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 175 [2021-02-23 16:20:57,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:20:57,402 INFO L225 Difference]: With dead ends: 430 [2021-02-23 16:20:57,402 INFO L226 Difference]: Without dead ends: 345 [2021-02-23 16:20:57,403 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2021-02-23 16:20:57,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2021-02-23 16:20:57,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 275. [2021-02-23 16:20:57,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 275 states. [2021-02-23 16:20:57,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 297 transitions. [2021-02-23 16:20:57,513 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 297 transitions. Word has length 175 [2021-02-23 16:20:57,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:20:57,514 INFO L480 AbstractCegarLoop]: Abstraction has 275 states and 297 transitions. [2021-02-23 16:20:57,514 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-23 16:20:57,514 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 297 transitions. [2021-02-23 16:20:57,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-02-23 16:20:57,517 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:20:57,517 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 16:20:57,517 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-23 16:20:57,518 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:20:57,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:20:57,518 INFO L82 PathProgramCache]: Analyzing trace with hash 194907971, now seen corresponding path program 1 times [2021-02-23 16:20:57,518 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:20:57,519 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1358056869] [2021-02-23 16:20:57,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:20:57,522 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:20:57,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 16:20:57,591 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 16:20:57,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 16:20:57,657 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 16:20:57,900 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-23 16:20:57,900 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-23 16:20:57,901 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-23 16:20:57,924 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 04:20:57 BoogieIcfgContainer [2021-02-23 16:20:57,924 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 16:20:57,926 INFO L168 Benchmark]: Toolchain (without parser) took 17686.69 ms. Allocated memory was 152.0 MB in the beginning and 421.5 MB in the end (delta: 269.5 MB). Free memory was 127.3 MB in the beginning and 377.7 MB in the end (delta: -250.4 MB). Peak memory consumption was 255.5 MB. Max. memory is 8.0 GB. [2021-02-23 16:20:57,926 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 152.0 MB. Free memory is still 126.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 16:20:57,927 INFO L168 Benchmark]: CACSL2BoogieTranslator took 573.81 ms. Allocated memory is still 152.0 MB. Free memory was 126.1 MB in the beginning and 106.5 MB in the end (delta: 19.5 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. [2021-02-23 16:20:57,927 INFO L168 Benchmark]: Boogie Preprocessor took 171.81 ms. Allocated memory is still 152.0 MB. Free memory was 106.5 MB in the beginning and 102.8 MB in the end (delta: 3.7 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2021-02-23 16:20:57,928 INFO L168 Benchmark]: RCFGBuilder took 1424.04 ms. Allocated memory was 152.0 MB in the beginning and 189.8 MB in the end (delta: 37.7 MB). Free memory was 102.8 MB in the beginning and 136.2 MB in the end (delta: -33.4 MB). Peak memory consumption was 35.8 MB. Max. memory is 8.0 GB. [2021-02-23 16:20:57,928 INFO L168 Benchmark]: TraceAbstraction took 15491.38 ms. Allocated memory was 189.8 MB in the beginning and 421.5 MB in the end (delta: 231.7 MB). Free memory was 135.7 MB in the beginning and 377.7 MB in the end (delta: -242.0 MB). Peak memory consumption was 224.9 MB. Max. memory is 8.0 GB. [2021-02-23 16:20:57,931 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 152.0 MB. Free memory is still 126.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 573.81 ms. Allocated memory is still 152.0 MB. Free memory was 126.1 MB in the beginning and 106.5 MB in the end (delta: 19.5 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 171.81 ms. Allocated memory is still 152.0 MB. Free memory was 106.5 MB in the beginning and 102.8 MB in the end (delta: 3.7 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1424.04 ms. Allocated memory was 152.0 MB in the beginning and 189.8 MB in the end (delta: 37.7 MB). Free memory was 102.8 MB in the beginning and 136.2 MB in the end (delta: -33.4 MB). Peak memory consumption was 35.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 15491.38 ms. Allocated memory was 189.8 MB in the beginning and 421.5 MB in the end (delta: 231.7 MB). Free memory was 135.7 MB in the beginning and 377.7 MB in the end (delta: -242.0 MB). Peak memory consumption was 224.9 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 84]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L258] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L464] int pumpRunning = 0; [L465] int systemActive = 1; [L685] int cleanupTimeShifts = 4; [L781] int waterLevel = 1; [L782] int methaneLevelCritical = 0; [L758] int retValue_acc ; [L759] int tmp ; [L763] FCALL select_helpers() [L764] FCALL select_features() [L765] CALL, EXPR valid_product() [L71] int retValue_acc ; [L74] retValue_acc = 1 [L75] return (retValue_acc); [L765] RET, EXPR valid_product() [L765] tmp = valid_product() [L767] COND TRUE \read(tmp) [L769] FCALL setup() [L770] CALL runTest() [L752] CALL test() [L619] int splverifierCounter ; [L620] int tmp ; [L621] int tmp___0 ; [L622] int tmp___1 ; [L623] int tmp___2 ; [L626] splverifierCounter = 0 [L628] COND TRUE 1 [L630] COND TRUE splverifierCounter < 4 [L636] tmp = __VERIFIER_nondet_int() [L638] COND TRUE \read(tmp) [L640] CALL waterRise() [L799] COND TRUE waterLevel < 2 [L800] waterLevel = waterLevel + 1 [L640] RET waterRise() [L646] tmp___0 = __VERIFIER_nondet_int() [L648] COND FALSE !(\read(tmp___0)) [L656] tmp___2 = __VERIFIER_nondet_int() [L658] COND TRUE \read(tmp___2) [L660] CALL startSystem() [L575] systemActive = 1 [L660] RET startSystem() [L673] CALL timeShift() [L472] COND FALSE !(\read(pumpRunning)) [L479] COND TRUE \read(systemActive) [L481] FCALL processEnvironment() [L487] CALL __utac_acc__Specification3_spec__1() [L582] int tmp ; [L583] int tmp___0 ; [L584] int tmp___1 ; [L588] CALL, EXPR isMethaneLevelCritical() [L820] int retValue_acc ; [L823] retValue_acc = methaneLevelCritical [L824] return (retValue_acc); [L588] RET, EXPR isMethaneLevelCritical() [L588] tmp = isMethaneLevelCritical() [L590] COND FALSE !(\read(tmp)) [L594] CALL, EXPR getWaterLevel() [L852] int retValue_acc ; [L855] retValue_acc = waterLevel [L856] return (retValue_acc); [L594] RET, EXPR getWaterLevel() [L594] tmp___0 = getWaterLevel() [L596] COND TRUE tmp___0 == 2 [L598] CALL, EXPR isPumpRunning() [L527] int retValue_acc ; [L530] retValue_acc = pumpRunning [L531] return (retValue_acc); [L598] RET, EXPR isPumpRunning() [L598] tmp___1 = isPumpRunning() [L600] COND FALSE !(\read(tmp___1)) [L604] CALL __automaton_fail() [L84] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 36 procedures, 591 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 15.4s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 11.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 776 SDtfs, 950 SDslu, 1287 SDs, 0 SdLazy, 1866 SolverSat, 281 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 115 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 6.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=275occurred 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: 0.3s AutomataMinimizationTime, 4 MinimizatonAttempts, 192 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...