/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_product05.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 16:21:21,645 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 16:21:21,649 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 16:21:21,704 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-23 16:21:21,705 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-23 16:21:21,710 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-23 16:21:21,714 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-23 16:21:21,721 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-23 16:21:21,723 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-23 16:21:21,730 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-23 16:21:21,731 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-23 16:21:21,734 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-23 16:21:21,735 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 16:21:21,738 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 16:21:21,740 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 16:21:21,742 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 16:21:21,758 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 16:21:21,759 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 16:21:21,766 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 16:21:21,769 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 16:21:21,773 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 16:21:21,776 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 16:21:21,777 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 16:21:21,780 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 16:21:21,790 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-23 16:21:21,791 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-23 16:21:21,791 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-23 16:21:21,792 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-23 16:21:21,795 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-23 16:21:21,796 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-23 16:21:21,797 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-23 16:21:21,798 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-23 16:21:21,800 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-23 16:21:21,801 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-23 16:21:21,802 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-23 16:21:21,802 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-23 16:21:21,803 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-23 16:21:21,803 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-23 16:21:21,804 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 16:21:21,805 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 16:21:21,805 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 16:21:21,806 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 16:21:21,832 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 16:21:21,832 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 16:21:21,837 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 16:21:21,837 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 16:21:21,837 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 16:21:21,837 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 16:21:21,838 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 16:21:21,838 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 16:21:21,838 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 16:21:21,838 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 16:21:21,839 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 16:21:21,840 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 16:21:21,840 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 16:21:21,840 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 16:21:21,841 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 16:21:21,841 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 16:21:21,841 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 16:21:21,841 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 16:21:21,841 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 16:21:21,842 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 16:21:21,842 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 16:21:21,842 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 16:21:21,842 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 16:21:22,210 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 16:21:22,247 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 16:21:22,251 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 16:21:22,252 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 16:21:22,253 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 16:21:22,254 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product05.cil.c [2021-02-23 16:21:22,345 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c07472c70/006d851ac60d4d10a02619c6b0d563ef/FLAG7ed9e7ba9 [2021-02-23 16:21:22,956 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 16:21:22,957 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product05.cil.c [2021-02-23 16:21:22,973 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c07472c70/006d851ac60d4d10a02619c6b0d563ef/FLAG7ed9e7ba9 [2021-02-23 16:21:23,295 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c07472c70/006d851ac60d4d10a02619c6b0d563ef [2021-02-23 16:21:23,302 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 16:21:23,317 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 16:21:23,324 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 16:21:23,324 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 16:21:23,329 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 16:21:23,330 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 04:21:23" (1/1) ... [2021-02-23 16:21:23,331 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d074f01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:21:23, skipping insertion in model container [2021-02-23 16:21:23,332 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 04:21:23" (1/1) ... [2021-02-23 16:21:23,343 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 16:21:23,418 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 16:21:23,674 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_product05.cil.c[1817,1830] [2021-02-23 16:21:23,791 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 16:21:23,816 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 16:21:23,851 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_product05.cil.c[1817,1830] [2021-02-23 16:21:23,976 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 16:21:24,007 INFO L208 MainTranslator]: Completed translation [2021-02-23 16:21:24,007 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:21:24 WrapperNode [2021-02-23 16:21:24,007 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 16:21:24,008 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 16:21:24,009 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 16:21:24,009 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 16:21:24,021 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:21:24" (1/1) ... [2021-02-23 16:21:24,022 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:21:24" (1/1) ... [2021-02-23 16:21:24,040 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:21:24" (1/1) ... [2021-02-23 16:21:24,040 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:21:24" (1/1) ... [2021-02-23 16:21:24,072 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:21:24" (1/1) ... [2021-02-23 16:21:24,083 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:21:24" (1/1) ... [2021-02-23 16:21:24,088 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:21:24" (1/1) ... [2021-02-23 16:21:24,096 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 16:21:24,097 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 16:21:24,098 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 16:21:24,098 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 16:21:24,100 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:21:24" (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 16:21:24,233 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 16:21:24,233 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 16:21:24,233 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-23 16:21:24,234 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 16:21:24,234 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-23 16:21:24,234 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-23 16:21:24,234 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-23 16:21:24,234 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-23 16:21:24,235 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-23 16:21:24,235 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-23 16:21:24,236 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-02-23 16:21:24,236 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-23 16:21:24,236 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-23 16:21:24,236 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-23 16:21:24,237 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-23 16:21:24,237 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-23 16:21:24,237 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-23 16:21:24,237 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-23 16:21:24,238 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-23 16:21:24,239 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-23 16:21:24,241 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-23 16:21:24,241 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-23 16:21:24,241 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 16:21:24,242 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-23 16:21:24,242 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-23 16:21:24,242 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-23 16:21:24,242 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-23 16:21:24,242 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-23 16:21:24,243 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-23 16:21:24,243 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-23 16:21:24,243 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-23 16:21:24,243 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-23 16:21:24,243 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-23 16:21:24,243 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-23 16:21:24,243 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-23 16:21:24,244 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2021-02-23 16:21:24,244 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 16:21:24,244 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 16:21:24,244 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 16:21:24,244 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 16:21:24,244 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 16:21:24,244 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-23 16:21:24,245 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-23 16:21:24,245 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-23 16:21:24,245 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-23 16:21:24,245 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-23 16:21:24,245 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-23 16:21:24,245 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-23 16:21:24,245 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-23 16:21:24,246 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-23 16:21:24,246 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-23 16:21:24,246 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-23 16:21:24,246 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-23 16:21:24,246 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-23 16:21:24,246 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-23 16:21:24,246 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2021-02-23 16:21:24,246 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-23 16:21:24,247 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-02-23 16:21:24,247 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-23 16:21:24,247 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-23 16:21:24,247 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-23 16:21:24,247 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-23 16:21:24,247 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-23 16:21:24,247 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-23 16:21:24,248 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-23 16:21:24,248 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-23 16:21:24,248 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 16:21:24,248 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-23 16:21:24,248 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-23 16:21:24,248 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-23 16:21:24,249 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-23 16:21:24,249 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-23 16:21:24,249 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 16:21:24,250 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-23 16:21:24,250 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-23 16:21:24,250 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 16:21:24,250 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-23 16:21:24,250 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-23 16:21:24,251 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 16:21:24,252 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-23 16:21:24,252 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-23 16:21:24,252 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-23 16:21:24,252 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-23 16:21:24,252 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 16:21:24,253 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 16:21:24,254 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 16:21:25,432 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 16:21:25,433 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-23 16:21:25,436 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 04:21:25 BoogieIcfgContainer [2021-02-23 16:21:25,436 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 16:21:25,438 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 16:21:25,438 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 16:21:25,442 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 16:21:25,442 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 04:21:23" (1/3) ... [2021-02-23 16:21:25,443 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ed8dd2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 04:21:25, skipping insertion in model container [2021-02-23 16:21:25,443 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:21:24" (2/3) ... [2021-02-23 16:21:25,444 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ed8dd2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 04:21:25, skipping insertion in model container [2021-02-23 16:21:25,444 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 04:21:25" (3/3) ... [2021-02-23 16:21:25,445 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product05.cil.c [2021-02-23 16:21:25,452 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 16:21:25,458 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 16:21:25,477 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 16:21:25,501 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 16:21:25,501 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 16:21:25,502 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-23 16:21:25,502 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 16:21:25,502 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 16:21:25,502 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 16:21:25,502 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 16:21:25,502 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 16:21:25,525 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states. [2021-02-23 16:21:25,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-02-23 16:21:25,544 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:21:25,545 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 16:21:25,546 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:21:25,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:21:25,552 INFO L82 PathProgramCache]: Analyzing trace with hash 255202477, now seen corresponding path program 1 times [2021-02-23 16:21:25,561 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:21:25,561 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2080395116] [2021-02-23 16:21:25,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:21:25,647 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:21:25,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:21:26,051 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:21:26,053 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:21:26,054 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:21:26,055 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:21:26,365 WARN L202 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:21:26,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:21:26,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:21:26,530 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:21:26,531 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:21:26,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:21:26,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:21:26,564 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:21:26,565 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:21:26,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:21:26,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:21:26,572 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:21:26,573 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:21:26,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:21:26,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:21:26,580 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:21:26,582 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:21:26,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:21:26,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:21:26,591 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:21:26,591 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:21:26,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-23 16:21:26,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:21:26,609 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:21:26,611 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:21:26,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-23 16:21:26,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:21:26,616 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:21:26,617 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:21:26,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-02-23 16:21:26,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:21:26,631 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:21:26,632 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:21:26,703 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 16:21:26,705 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2080395116] [2021-02-23 16:21:26,707 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:21:26,707 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-23 16:21:26,707 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747505514] [2021-02-23 16:21:26,715 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-23 16:21:26,715 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:21:26,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-23 16:21:26,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 16:21:26,732 INFO L87 Difference]: Start difference. First operand 281 states. Second operand 3 states. [2021-02-23 16:21:28,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:21:28,245 INFO L93 Difference]: Finished difference Result 419 states and 501 transitions. [2021-02-23 16:21:28,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-23 16:21:28,247 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 158 [2021-02-23 16:21:28,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:21:28,262 INFO L225 Difference]: With dead ends: 419 [2021-02-23 16:21:28,263 INFO L226 Difference]: Without dead ends: 268 [2021-02-23 16:21:28,267 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 16:21:28,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2021-02-23 16:21:28,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 229. [2021-02-23 16:21:28,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2021-02-23 16:21:28,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 247 transitions. [2021-02-23 16:21:28,436 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 247 transitions. Word has length 158 [2021-02-23 16:21:28,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:21:28,437 INFO L480 AbstractCegarLoop]: Abstraction has 229 states and 247 transitions. [2021-02-23 16:21:28,437 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-23 16:21:28,437 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 247 transitions. [2021-02-23 16:21:28,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-02-23 16:21:28,442 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:21:28,443 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 16:21:28,443 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 16:21:28,443 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:21:28,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:21:28,444 INFO L82 PathProgramCache]: Analyzing trace with hash -1300908467, now seen corresponding path program 1 times [2021-02-23 16:21:28,444 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:21:28,444 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1903872756] [2021-02-23 16:21:28,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:21:28,449 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:21:28,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:21:28,586 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:21:28,588 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:21:28,589 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:21:28,590 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:21:28,598 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:21:28,598 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:21:28,925 WARN L202 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:21:28,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:21:28,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:21:28,966 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:21:28,967 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:21:28,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:21:28,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:21:28,974 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:21:28,974 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:21:28,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:21:28,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:21:28,977 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:21:28,977 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:21:28,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:21:28,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:21:28,980 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:21:28,980 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:21:28,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:21:28,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:21:28,983 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:21:28,983 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:21:28,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-02-23 16:21:28,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:21:28,986 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:21:28,986 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:21:28,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-02-23 16:21:28,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:21:28,989 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:21:28,990 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:21:28,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-02-23 16:21:28,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:21:28,992 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:21:28,993 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:21:29,047 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 16:21:29,048 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1903872756] [2021-02-23 16:21:29,048 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:21:29,048 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 16:21:29,048 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370525370] [2021-02-23 16:21:29,049 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 16:21:29,050 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:21:29,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 16:21:29,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 16:21:29,051 INFO L87 Difference]: Start difference. First operand 229 states and 247 transitions. Second operand 4 states. [2021-02-23 16:21:29,790 WARN L202 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:21:30,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:21:30,616 INFO L93 Difference]: Finished difference Result 335 states and 375 transitions. [2021-02-23 16:21:30,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-23 16:21:30,616 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 159 [2021-02-23 16:21:30,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:21:30,620 INFO L225 Difference]: With dead ends: 335 [2021-02-23 16:21:30,620 INFO L226 Difference]: Without dead ends: 251 [2021-02-23 16:21:30,622 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 16:21:30,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2021-02-23 16:21:30,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 219. [2021-02-23 16:21:30,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2021-02-23 16:21:30,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 234 transitions. [2021-02-23 16:21:30,703 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 234 transitions. Word has length 159 [2021-02-23 16:21:30,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:21:30,704 INFO L480 AbstractCegarLoop]: Abstraction has 219 states and 234 transitions. [2021-02-23 16:21:30,704 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 16:21:30,704 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 234 transitions. [2021-02-23 16:21:30,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-02-23 16:21:30,707 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:21:30,707 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] [2021-02-23 16:21:30,707 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 16:21:30,707 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:21:30,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:21:30,708 INFO L82 PathProgramCache]: Analyzing trace with hash 506809905, now seen corresponding path program 1 times [2021-02-23 16:21:30,708 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:21:30,709 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [621915607] [2021-02-23 16:21:30,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:21:30,712 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:21:30,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:21:30,808 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:21:30,808 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:21:30,811 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:21:30,812 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:21:30,821 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:21:30,822 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:21:30,827 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:21:30,827 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:21:30,833 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:21:30,834 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:21:31,184 WARN L202 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:21:31,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:21:31,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:21:31,240 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:21:31,241 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:21:31,242 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:21:31,242 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 16:21:31,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:21:31,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:21:31,258 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:21:31,260 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:21:31,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:21:31,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:21:31,263 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:21:31,263 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:21:31,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:21:31,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:21:31,275 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:21:31,276 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:21:31,283 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:21:31,284 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:21:31,303 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-23 16:21:31,305 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-23 16:21:31,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:21:31,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:21:31,325 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:21:31,326 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:21:31,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-23 16:21:31,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:21:31,329 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:21:31,329 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:21:31,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-02-23 16:21:31,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:21:31,333 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:21:31,333 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:21:31,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-02-23 16:21:31,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:21:31,337 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:21:31,339 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:21:31,390 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 16:21:31,391 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [621915607] [2021-02-23 16:21:31,391 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:21:31,391 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-23 16:21:31,391 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371377123] [2021-02-23 16:21:31,392 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-23 16:21:31,392 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:21:31,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-23 16:21:31,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-23 16:21:31,393 INFO L87 Difference]: Start difference. First operand 219 states and 234 transitions. Second operand 9 states. [2021-02-23 16:21:32,058 WARN L202 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:21:32,463 WARN L202 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:21:32,831 WARN L202 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 16:21:33,215 WARN L202 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:21:33,565 WARN L202 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:21:33,904 WARN L202 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:21:35,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:21:35,189 INFO L93 Difference]: Finished difference Result 355 states and 400 transitions. [2021-02-23 16:21:35,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-23 16:21:35,189 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 168 [2021-02-23 16:21:35,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:21:35,192 INFO L225 Difference]: With dead ends: 355 [2021-02-23 16:21:35,193 INFO L226 Difference]: Without dead ends: 251 [2021-02-23 16:21:35,194 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 [2021-02-23 16:21:35,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2021-02-23 16:21:35,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 219. [2021-02-23 16:21:35,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2021-02-23 16:21:35,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 233 transitions. [2021-02-23 16:21:35,288 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 233 transitions. Word has length 168 [2021-02-23 16:21:35,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:21:35,290 INFO L480 AbstractCegarLoop]: Abstraction has 219 states and 233 transitions. [2021-02-23 16:21:35,290 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-23 16:21:35,290 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 233 transitions. [2021-02-23 16:21:35,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-02-23 16:21:35,293 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:21:35,293 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] [2021-02-23 16:21:35,293 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 16:21:35,293 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:21:35,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:21:35,294 INFO L82 PathProgramCache]: Analyzing trace with hash -910061808, now seen corresponding path program 1 times [2021-02-23 16:21:35,294 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:21:35,294 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [247420996] [2021-02-23 16:21:35,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:21:35,299 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:21:35,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:21:35,431 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:21:35,432 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:21:35,435 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:21:35,435 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:21:35,436 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:21:35,437 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:21:35,439 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:21:35,439 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:21:35,441 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:21:35,442 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:21:35,442 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:21:35,443 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:21:35,449 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:21:35,450 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:21:35,454 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:21:35,455 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:21:35,788 WARN L202 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:21:35,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:21:35,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:21:35,853 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:21:35,853 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:21:35,854 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:21:35,855 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 16:21:35,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:21:35,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:21:35,867 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:21:35,868 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:21:35,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:21:35,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:21:35,872 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:21:35,873 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:21:35,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:21:35,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:21:35,876 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:21:35,877 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:21:35,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:21:35,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:21:35,881 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:21:35,882 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:21:35,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-02-23 16:21:35,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:21:35,895 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:21:35,895 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:21:35,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 16:21:35,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:21:35,898 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:21:35,899 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:21:35,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-02-23 16:21:35,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:21:35,902 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:21:35,902 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:21:35,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-02-23 16:21:35,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:21:35,907 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:21:35,908 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:21:35,909 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:21:35,909 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:21:35,920 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:21:35,920 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:21:35,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-02-23 16:21:35,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:21:35,932 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:21:35,933 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:21:35,976 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 16:21:35,976 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [247420996] [2021-02-23 16:21:35,976 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:21:35,976 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-23 16:21:35,977 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740021814] [2021-02-23 16:21:35,977 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-23 16:21:35,977 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:21:35,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-23 16:21:35,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-23 16:21:35,979 INFO L87 Difference]: Start difference. First operand 219 states and 233 transitions. Second operand 9 states. [2021-02-23 16:21:36,543 WARN L202 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:21:38,380 WARN L202 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:21:38,791 WARN L202 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:21:39,219 WARN L202 SmtUtils]: Spent 377.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:21:39,615 WARN L202 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:21:39,983 WARN L202 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:21:40,509 WARN L202 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:21:40,943 WARN L202 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:21:41,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:21:41,224 INFO L93 Difference]: Finished difference Result 494 states and 585 transitions. [2021-02-23 16:21:41,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-02-23 16:21:41,226 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 176 [2021-02-23 16:21:41,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:21:41,230 INFO L225 Difference]: With dead ends: 494 [2021-02-23 16:21:41,230 INFO L226 Difference]: Without dead ends: 390 [2021-02-23 16:21:41,231 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2021-02-23 16:21:41,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2021-02-23 16:21:41,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 315. [2021-02-23 16:21:41,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 315 states. [2021-02-23 16:21:41,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 346 transitions. [2021-02-23 16:21:41,368 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 346 transitions. Word has length 176 [2021-02-23 16:21:41,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:21:41,369 INFO L480 AbstractCegarLoop]: Abstraction has 315 states and 346 transitions. [2021-02-23 16:21:41,369 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-23 16:21:41,369 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 346 transitions. [2021-02-23 16:21:41,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2021-02-23 16:21:41,373 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:21:41,373 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 16:21:41,373 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-23 16:21:41,374 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:21:41,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:21:41,374 INFO L82 PathProgramCache]: Analyzing trace with hash -1745516094, now seen corresponding path program 1 times [2021-02-23 16:21:41,375 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:21:41,375 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [257707639] [2021-02-23 16:21:41,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:21:41,378 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:21:41,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:21:41,464 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:21:41,465 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:21:41,473 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:21:41,474 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:21:41,475 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:21:41,475 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:21:41,476 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:21:41,476 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:21:41,477 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:21:41,477 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:21:41,478 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:21:41,479 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:21:41,790 WARN L202 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:21:41,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:21:41,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:21:41,832 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:21:41,832 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:21:41,833 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:21:41,833 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:21:41,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:21:41,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:21:41,842 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:21:41,842 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:21:41,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:21:41,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:21:41,845 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:21:41,845 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:21:41,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:21:41,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:21:41,848 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:21:41,849 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:21:41,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:21:41,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:21:41,851 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:21:41,852 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:21:41,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-02-23 16:21:41,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:21:41,861 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:21:41,862 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:21:41,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-02-23 16:21:41,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:21:41,873 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:21:41,873 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:21:41,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 16:21:41,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:21:41,876 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:21:41,876 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:21:41,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-02-23 16:21:41,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:21:41,879 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:21:41,879 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:21:41,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-02-23 16:21:41,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:21:41,882 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:21:41,882 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:21:41,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2021-02-23 16:21:41,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:21:41,885 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:21:41,885 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:21:41,929 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 16:21:41,930 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [257707639] [2021-02-23 16:21:41,930 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:21:41,930 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-23 16:21:41,930 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760448556] [2021-02-23 16:21:41,931 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-23 16:21:41,931 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:21:41,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-23 16:21:41,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-23 16:21:41,932 INFO L87 Difference]: Start difference. First operand 315 states and 346 transitions. Second operand 6 states. [2021-02-23 16:21:42,549 WARN L202 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:21:43,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:21:43,236 INFO L93 Difference]: Finished difference Result 484 states and 550 transitions. [2021-02-23 16:21:43,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-02-23 16:21:43,237 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 181 [2021-02-23 16:21:43,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:21:43,240 INFO L225 Difference]: With dead ends: 484 [2021-02-23 16:21:43,240 INFO L226 Difference]: Without dead ends: 284 [2021-02-23 16:21:43,241 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-02-23 16:21:43,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2021-02-23 16:21:43,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 263. [2021-02-23 16:21:43,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 263 states. [2021-02-23 16:21:43,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 278 transitions. [2021-02-23 16:21:43,349 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 278 transitions. Word has length 181 [2021-02-23 16:21:43,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:21:43,350 INFO L480 AbstractCegarLoop]: Abstraction has 263 states and 278 transitions. [2021-02-23 16:21:43,350 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-23 16:21:43,350 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 278 transitions. [2021-02-23 16:21:43,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2021-02-23 16:21:43,352 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:21:43,353 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 16:21:43,353 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-23 16:21:43,353 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:21:43,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:21:43,354 INFO L82 PathProgramCache]: Analyzing trace with hash -997262042, now seen corresponding path program 1 times [2021-02-23 16:21:43,354 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:21:43,354 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1356934813] [2021-02-23 16:21:43,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:21:43,357 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:21:43,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 16:21:43,440 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 16:21:43,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 16:21:43,514 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 16:21:43,726 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-23 16:21:43,726 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-23 16:21:43,727 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-23 16:21:43,750 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 04:21:43 BoogieIcfgContainer [2021-02-23 16:21:43,750 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 16:21:43,751 INFO L168 Benchmark]: Toolchain (without parser) took 20447.69 ms. Allocated memory was 159.4 MB in the beginning and 440.4 MB in the end (delta: 281.0 MB). Free memory was 134.5 MB in the beginning and 400.1 MB in the end (delta: -265.6 MB). Peak memory consumption was 267.9 MB. Max. memory is 8.0 GB. [2021-02-23 16:21:43,752 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 159.4 MB. Free memory is still 132.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 16:21:43,752 INFO L168 Benchmark]: CACSL2BoogieTranslator took 683.84 ms. Allocated memory is still 159.4 MB. Free memory was 133.4 MB in the beginning and 113.6 MB in the end (delta: 19.9 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. [2021-02-23 16:21:43,753 INFO L168 Benchmark]: Boogie Preprocessor took 88.04 ms. Allocated memory is still 159.4 MB. Free memory was 113.6 MB in the beginning and 109.8 MB in the end (delta: 3.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2021-02-23 16:21:43,753 INFO L168 Benchmark]: RCFGBuilder took 1338.69 ms. Allocated memory was 159.4 MB in the beginning and 191.9 MB in the end (delta: 32.5 MB). Free memory was 109.7 MB in the beginning and 160.3 MB in the end (delta: -50.7 MB). Peak memory consumption was 61.4 MB. Max. memory is 8.0 GB. [2021-02-23 16:21:43,754 INFO L168 Benchmark]: TraceAbstraction took 18312.13 ms. Allocated memory was 191.9 MB in the beginning and 440.4 MB in the end (delta: 248.5 MB). Free memory was 159.8 MB in the beginning and 400.1 MB in the end (delta: -240.3 MB). Peak memory consumption was 259.9 MB. Max. memory is 8.0 GB. [2021-02-23 16:21:43,756 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 159.4 MB. Free memory is still 132.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 683.84 ms. Allocated memory is still 159.4 MB. Free memory was 133.4 MB in the beginning and 113.6 MB in the end (delta: 19.9 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 88.04 ms. Allocated memory is still 159.4 MB. Free memory was 113.6 MB in the beginning and 109.8 MB in the end (delta: 3.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1338.69 ms. Allocated memory was 159.4 MB in the beginning and 191.9 MB in the end (delta: 32.5 MB). Free memory was 109.7 MB in the beginning and 160.3 MB in the end (delta: -50.7 MB). Peak memory consumption was 61.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 18312.13 ms. Allocated memory was 191.9 MB in the beginning and 440.4 MB in the end (delta: 248.5 MB). Free memory was 159.8 MB in the beginning and 400.1 MB in the end (delta: -240.3 MB). Peak memory consumption was 259.9 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: [L97] int pumpRunning = 0; [L98] int systemActive = 1; [L299] int cleanupTimeShifts = 4; [L564] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L762] int waterLevel = 1; [L763] int methaneLevelCritical = 0; [L372] int retValue_acc ; [L373] int tmp ; [L377] FCALL select_helpers() [L378] FCALL select_features() [L379] CALL, EXPR valid_product() [L71] int retValue_acc ; [L74] retValue_acc = 1 [L75] return (retValue_acc); [L379] RET, EXPR valid_product() [L379] tmp = valid_product() [L381] COND TRUE \read(tmp) [L383] FCALL setup() [L384] CALL runTest() [L366] CALL test() [L235] int splverifierCounter ; [L236] int tmp ; [L237] int tmp___0 ; [L238] int tmp___1 ; [L239] int tmp___2 ; [L242] splverifierCounter = 0 [L244] COND TRUE 1 [L246] COND TRUE splverifierCounter < 4 [L252] tmp = __VERIFIER_nondet_int() [L254] COND TRUE \read(tmp) [L256] CALL waterRise() [L780] COND TRUE waterLevel < 2 [L781] waterLevel = waterLevel + 1 [L256] RET waterRise() [L262] tmp___0 = __VERIFIER_nondet_int() [L264] COND FALSE !(\read(tmp___0)) [L272] tmp___2 = __VERIFIER_nondet_int() [L274] COND TRUE \read(tmp___2) [L287] CALL timeShift() [L105] COND FALSE !(\read(pumpRunning)) [L112] COND TRUE \read(systemActive) [L114] CALL processEnvironment() [L134] int tmp ; [L137] COND FALSE !(\read(pumpRunning)) [L152] FCALL processEnvironment__wrappee__base() [L114] RET processEnvironment() [L120] CALL __utac_acc__Specification3_spec__1() [L843] int tmp ; [L844] int tmp___0 ; [L845] int tmp___1 ; [L849] CALL, EXPR isMethaneLevelCritical() [L801] int retValue_acc ; [L804] retValue_acc = methaneLevelCritical [L805] return (retValue_acc); [L849] RET, EXPR isMethaneLevelCritical() [L849] tmp = isMethaneLevelCritical() [L851] COND FALSE !(\read(tmp)) [L855] CALL, EXPR getWaterLevel() [L833] int retValue_acc ; [L836] retValue_acc = waterLevel [L837] return (retValue_acc); [L855] RET, EXPR getWaterLevel() [L855] tmp___0 = getWaterLevel() [L857] COND TRUE tmp___0 == 2 [L859] CALL, EXPR isPumpRunning() [L186] int retValue_acc ; [L189] retValue_acc = pumpRunning [L190] return (retValue_acc); [L859] RET, EXPR isPumpRunning() [L859] tmp___1 = isPumpRunning() [L861] COND FALSE !(\read(tmp___1)) [L865] CALL __automaton_fail() [L84] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 36 procedures, 599 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 18.2s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 13.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1022 SDtfs, 1463 SDslu, 1280 SDs, 0 SdLazy, 2324 SolverSat, 455 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 145 GetRequests, 102 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 7.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=315occurred 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: 0.5s AutomataMinimizationTime, 5 MinimizatonAttempts, 199 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...