/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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product05.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 15:30:33,587 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 15:30:33,589 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 15:30:33,624 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 15:30:33,624 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 15:30:33,626 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 15:30:33,628 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 15:30:33,630 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 15:30:33,642 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 15:30:33,644 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 15:30:33,645 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 15:30:33,646 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 15:30:33,647 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 15:30:33,648 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 15:30:33,649 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 15:30:33,651 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 15:30:33,651 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 15:30:33,653 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 15:30:33,654 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 15:30:33,657 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 15:30:33,658 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 15:30:33,660 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 15:30:33,662 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 15:30:33,663 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 15:30:33,666 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-21 15:30:33,666 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-21 15:30:33,666 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-21 15:30:33,668 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-21 15:30:33,668 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-21 15:30:33,669 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-21 15:30:33,669 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-21 15:30:33,670 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-21 15:30:33,671 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-21 15:30:33,672 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-21 15:30:33,673 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-21 15:30:33,674 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-21 15:30:33,675 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-21 15:30:33,675 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-21 15:30:33,675 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 15:30:33,676 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 15:30:33,677 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 15:30:33,678 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2021-02-21 15:30:33,704 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 15:30:33,704 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 15:30:33,706 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-02-21 15:30:33,706 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-02-21 15:30:33,706 INFO L138 SettingsManager]: * Use SBE=true [2021-02-21 15:30:33,706 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 15:30:33,707 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 15:30:33,707 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 15:30:33,707 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 15:30:33,708 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 15:30:33,708 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 15:30:33,708 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 15:30:33,708 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 15:30:33,709 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 15:30:33,709 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 15:30:33,709 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 15:30:33,709 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 15:30:33,710 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 15:30:33,710 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-02-21 15:30:33,710 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 15:30:33,710 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 15:30:33,711 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 15:30:33,711 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-02-21 15:30:33,711 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-02-21 15:30:33,712 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-02-21 15:30:33,712 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-02-21 15:30:33,712 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 15:30:33,712 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-02-21 15:30:33,713 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 15:30:34,056 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 15:30:34,081 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 15:30:34,084 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 15:30:34,085 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 15:30:34,086 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 15:30:34,087 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product05.cil.c [2021-02-21 15:30:34,158 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a8dc798c5/cf433b6d484947e3999fa226abceac94/FLAG15c17ae7e [2021-02-21 15:30:34,817 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 15:30:34,820 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product05.cil.c [2021-02-21 15:30:34,844 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a8dc798c5/cf433b6d484947e3999fa226abceac94/FLAG15c17ae7e [2021-02-21 15:30:35,121 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a8dc798c5/cf433b6d484947e3999fa226abceac94 [2021-02-21 15:30:35,125 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 15:30:35,141 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 15:30:35,143 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 15:30:35,143 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 15:30:35,147 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 15:30:35,148 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 03:30:35" (1/1) ... [2021-02-21 15:30:35,150 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a29445e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:30:35, skipping insertion in model container [2021-02-21 15:30:35,150 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 03:30:35" (1/1) ... [2021-02-21 15:30:35,158 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 15:30:35,230 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 15:30:35,470 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] [2021-02-21 15:30:35,590 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 15:30:35,601 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 15:30:35,618 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] [2021-02-21 15:30:35,721 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 15:30:35,765 INFO L208 MainTranslator]: Completed translation [2021-02-21 15:30:35,766 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:30:35 WrapperNode [2021-02-21 15:30:35,766 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 15:30:35,767 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 15:30:35,768 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 15:30:35,768 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 15:30:35,780 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:30:35" (1/1) ... [2021-02-21 15:30:35,780 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:30:35" (1/1) ... [2021-02-21 15:30:35,799 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:30:35" (1/1) ... [2021-02-21 15:30:35,799 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:30:35" (1/1) ... [2021-02-21 15:30:35,831 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:30:35" (1/1) ... [2021-02-21 15:30:35,841 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:30:35" (1/1) ... [2021-02-21 15:30:35,847 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:30:35" (1/1) ... [2021-02-21 15:30:35,856 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 15:30:35,857 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 15:30:35,857 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 15:30:35,857 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 15:30:35,858 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:30:35" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 15:30:35,966 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 15:30:35,966 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 15:30:35,966 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-21 15:30:35,967 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 15:30:35,967 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-21 15:30:35,967 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-21 15:30:35,967 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-21 15:30:35,967 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-21 15:30:35,967 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-21 15:30:35,968 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-21 15:30:35,968 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-02-21 15:30:35,968 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-21 15:30:35,968 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-21 15:30:35,968 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-21 15:30:35,969 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-21 15:30:35,969 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-21 15:30:35,969 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-21 15:30:35,969 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-21 15:30:35,969 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-21 15:30:35,970 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-21 15:30:35,970 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-21 15:30:35,970 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-21 15:30:35,970 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 15:30:35,970 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-21 15:30:35,971 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-21 15:30:35,971 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-21 15:30:35,971 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-21 15:30:35,971 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-21 15:30:35,971 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-21 15:30:35,971 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-21 15:30:35,972 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-21 15:30:35,972 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-21 15:30:35,972 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-21 15:30:35,972 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-21 15:30:35,972 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-21 15:30:35,973 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2021-02-21 15:30:35,973 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 15:30:35,973 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 15:30:35,973 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 15:30:35,973 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 15:30:35,974 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-21 15:30:35,974 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-21 15:30:35,974 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-21 15:30:35,974 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-21 15:30:36,001 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-21 15:30:36,001 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-21 15:30:36,001 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-21 15:30:36,001 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-21 15:30:36,005 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-21 15:30:36,005 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-21 15:30:36,005 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-21 15:30:36,006 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-21 15:30:36,006 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-21 15:30:36,006 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-21 15:30:36,009 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-21 15:30:36,009 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2021-02-21 15:30:36,009 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-21 15:30:36,009 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-02-21 15:30:36,009 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-21 15:30:36,010 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-21 15:30:36,010 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-21 15:30:36,010 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-21 15:30:36,010 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-21 15:30:36,012 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-21 15:30:36,012 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-21 15:30:36,013 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-21 15:30:36,013 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 15:30:36,013 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-21 15:30:36,013 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-21 15:30:36,013 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-21 15:30:36,013 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-21 15:30:36,013 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-21 15:30:36,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 15:30:36,018 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-21 15:30:36,018 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-21 15:30:36,018 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 15:30:36,019 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-21 15:30:36,019 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-21 15:30:36,019 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 15:30:36,019 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-21 15:30:36,019 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-21 15:30:36,019 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-21 15:30:36,019 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-21 15:30:36,020 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 15:30:36,020 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 15:30:36,020 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 15:30:37,048 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 15:30:37,049 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-21 15:30:37,050 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 03:30:37 BoogieIcfgContainer [2021-02-21 15:30:37,051 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 15:30:37,053 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 15:30:37,053 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 15:30:37,056 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 15:30:37,057 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 03:30:35" (1/3) ... [2021-02-21 15:30:37,057 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f106431 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 03:30:37, skipping insertion in model container [2021-02-21 15:30:37,058 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:30:35" (2/3) ... [2021-02-21 15:30:37,058 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f106431 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 03:30:37, skipping insertion in model container [2021-02-21 15:30:37,058 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 03:30:37" (3/3) ... [2021-02-21 15:30:37,060 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product05.cil.c [2021-02-21 15:30:37,066 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-02-21 15:30:37,071 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 15:30:37,090 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 15:30:37,116 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 15:30:37,116 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 15:30:37,117 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-02-21 15:30:37,117 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 15:30:37,117 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 15:30:37,117 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 15:30:37,117 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 15:30:37,117 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 15:30:37,137 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states. [2021-02-21 15:30:37,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-02-21 15:30:37,147 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 15:30:37,148 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] [2021-02-21 15:30:37,148 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 15:30:37,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 15:30:37,154 INFO L82 PathProgramCache]: Analyzing trace with hash -433939089, now seen corresponding path program 1 times [2021-02-21 15:30:37,163 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 15:30:37,164 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721387091] [2021-02-21 15:30:37,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 15:30:37,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:30:37,569 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:30:37,570 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:30:37,571 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:30:37,572 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:30:37,888 WARN L202 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 15:30:37,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 15:30:37,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:30:37,929 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:30:37,929 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:30:37,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-02-21 15:30:37,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:30:37,934 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:30:37,934 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:30:37,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-02-21 15:30:37,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:30:37,938 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:30:37,938 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:30:37,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-02-21 15:30:37,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:30:37,942 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:30:37,943 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:30:37,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-02-21 15:30:37,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:30:37,946 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:30:37,946 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:30:37,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-02-21 15:30:37,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:30:37,950 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:30:37,951 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:30:37,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-02-21 15:30:37,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:30:37,955 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:30:37,955 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:30:37,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-02-21 15:30:37,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:30:37,959 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:30:37,959 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:30:37,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 15:30:37,976 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721387091] [2021-02-21 15:30:37,977 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 15:30:37,977 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-21 15:30:37,978 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702249423] [2021-02-21 15:30:37,984 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-21 15:30:37,984 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-21 15:30:37,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-21 15:30:38,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 15:30:38,003 INFO L87 Difference]: Start difference. First operand 148 states. Second operand 3 states. [2021-02-21 15:30:39,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 15:30:39,023 INFO L93 Difference]: Finished difference Result 249 states and 331 transitions. [2021-02-21 15:30:39,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-21 15:30:39,025 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2021-02-21 15:30:39,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 15:30:39,040 INFO L225 Difference]: With dead ends: 249 [2021-02-21 15:30:39,040 INFO L226 Difference]: Without dead ends: 135 [2021-02-21 15:30:39,045 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 15:30:39,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2021-02-21 15:30:39,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 105. [2021-02-21 15:30:39,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2021-02-21 15:30:39,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 123 transitions. [2021-02-21 15:30:39,177 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 123 transitions. Word has length 52 [2021-02-21 15:30:39,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 15:30:39,178 INFO L480 AbstractCegarLoop]: Abstraction has 105 states and 123 transitions. [2021-02-21 15:30:39,178 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-21 15:30:39,178 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 123 transitions. [2021-02-21 15:30:39,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-02-21 15:30:39,184 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 15:30:39,184 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] [2021-02-21 15:30:39,185 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 15:30:39,185 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 15:30:39,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 15:30:39,186 INFO L82 PathProgramCache]: Analyzing trace with hash -1093717329, now seen corresponding path program 1 times [2021-02-21 15:30:39,186 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 15:30:39,186 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580147051] [2021-02-21 15:30:39,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 15:30:39,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:30:39,272 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:30:39,273 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:30:39,274 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:30:39,274 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 15:30:39,279 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:30:39,279 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:30:39,610 WARN L202 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 15:30:39,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 15:30:39,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:30:39,641 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:30:39,642 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:30:39,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-02-21 15:30:39,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:30:39,645 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:30:39,645 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:30:39,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-02-21 15:30:39,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:30:39,648 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:30:39,648 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:30:39,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-02-21 15:30:39,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:30:39,652 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:30:39,652 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:30:39,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-02-21 15:30:39,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:30:39,655 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:30:39,656 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:30:39,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-02-21 15:30:39,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:30:39,659 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:30:39,659 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:30:39,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-02-21 15:30:39,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:30:39,663 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:30:39,663 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:30:39,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-02-21 15:30:39,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:30:39,666 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:30:39,667 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:30:39,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 15:30:39,678 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580147051] [2021-02-21 15:30:39,678 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 15:30:39,679 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 15:30:39,679 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862244461] [2021-02-21 15:30:39,680 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 15:30:39,680 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-21 15:30:39,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 15:30:39,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 15:30:39,682 INFO L87 Difference]: Start difference. First operand 105 states and 123 transitions. Second operand 4 states. [2021-02-21 15:30:40,235 WARN L202 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 15:30:41,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 15:30:41,009 INFO L93 Difference]: Finished difference Result 182 states and 222 transitions. [2021-02-21 15:30:41,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-21 15:30:41,010 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2021-02-21 15:30:41,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 15:30:41,018 INFO L225 Difference]: With dead ends: 182 [2021-02-21 15:30:41,018 INFO L226 Difference]: Without dead ends: 119 [2021-02-21 15:30:41,020 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-21 15:30:41,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-02-21 15:30:41,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 96. [2021-02-21 15:30:41,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2021-02-21 15:30:41,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 111 transitions. [2021-02-21 15:30:41,096 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 111 transitions. Word has length 53 [2021-02-21 15:30:41,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 15:30:41,096 INFO L480 AbstractCegarLoop]: Abstraction has 96 states and 111 transitions. [2021-02-21 15:30:41,096 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 15:30:41,097 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 111 transitions. [2021-02-21 15:30:41,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-02-21 15:30:41,109 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 15:30:41,110 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] [2021-02-21 15:30:41,112 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 15:30:41,112 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 15:30:41,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 15:30:41,113 INFO L82 PathProgramCache]: Analyzing trace with hash -2072520277, now seen corresponding path program 1 times [2021-02-21 15:30:41,113 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 15:30:41,118 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843083823] [2021-02-21 15:30:41,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 15:30:41,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:30:41,202 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:30:41,202 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 15:30:41,206 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:30:41,206 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 15:30:41,211 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:30:41,211 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 15:30:41,217 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:30:41,218 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 15:30:41,225 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:30:41,226 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:30:41,577 WARN L202 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 15:30:41,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 15:30:41,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:30:41,615 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:30:41,616 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 15:30:41,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-02-21 15:30:41,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:30:41,622 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:30:41,623 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:30:41,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-02-21 15:30:41,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:30:41,626 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:30:41,626 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:30:41,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-02-21 15:30:41,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:30:41,645 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-21 15:30:41,646 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-21 15:30:41,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-02-21 15:30:41,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:30:41,664 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:30:41,665 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:30:41,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-02-21 15:30:41,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:30:41,668 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:30:41,668 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:30:41,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-02-21 15:30:41,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:30:41,671 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:30:41,671 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:30:41,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-02-21 15:30:41,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:30:41,674 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:30:41,675 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:30:41,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 15:30:41,685 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843083823] [2021-02-21 15:30:41,685 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 15:30:41,685 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-21 15:30:41,686 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109938280] [2021-02-21 15:30:41,686 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-21 15:30:41,686 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-21 15:30:41,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-21 15:30:41,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-02-21 15:30:41,687 INFO L87 Difference]: Start difference. First operand 96 states and 111 transitions. Second operand 8 states. [2021-02-21 15:30:42,206 WARN L202 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 15:30:42,627 WARN L202 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 15:30:43,030 WARN L202 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 15:30:43,374 WARN L202 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 15:30:44,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 15:30:44,365 INFO L93 Difference]: Finished difference Result 191 states and 236 transitions. [2021-02-21 15:30:44,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-02-21 15:30:44,366 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2021-02-21 15:30:44,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 15:30:44,369 INFO L225 Difference]: With dead ends: 191 [2021-02-21 15:30:44,369 INFO L226 Difference]: Without dead ends: 119 [2021-02-21 15:30:44,370 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2021-02-21 15:30:44,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-02-21 15:30:44,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 96. [2021-02-21 15:30:44,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2021-02-21 15:30:44,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 110 transitions. [2021-02-21 15:30:44,401 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 110 transitions. Word has length 57 [2021-02-21 15:30:44,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 15:30:44,402 INFO L480 AbstractCegarLoop]: Abstraction has 96 states and 110 transitions. [2021-02-21 15:30:44,402 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-21 15:30:44,402 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 110 transitions. [2021-02-21 15:30:44,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-02-21 15:30:44,403 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 15:30:44,404 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] [2021-02-21 15:30:44,404 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 15:30:44,404 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 15:30:44,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 15:30:44,405 INFO L82 PathProgramCache]: Analyzing trace with hash -907369428, now seen corresponding path program 1 times [2021-02-21 15:30:44,405 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 15:30:44,405 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61667872] [2021-02-21 15:30:44,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 15:30:44,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:30:44,480 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:30:44,481 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 15:30:44,484 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:30:44,485 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 15:30:44,485 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:30:44,486 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 15:30:44,486 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:30:44,487 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 15:30:44,487 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:30:44,488 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 15:30:44,488 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:30:44,489 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 15:30:44,493 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:30:44,493 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 15:30:44,498 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:30:44,499 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:30:44,814 WARN L202 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 15:30:44,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 15:30:44,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:30:44,848 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:30:44,849 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 15:30:44,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-02-21 15:30:44,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:30:44,869 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:30:44,871 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:30:44,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-02-21 15:30:44,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:30:44,879 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:30:44,880 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:30:44,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-02-21 15:30:44,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:30:44,886 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:30:44,887 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:30:44,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-02-21 15:30:44,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:30:44,893 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:30:44,894 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:30:44,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-02-21 15:30:44,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:30:44,916 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:30:44,917 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:30:44,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 15:30:44,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:30:44,921 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:30:44,921 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:30:44,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-02-21 15:30:44,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:30:44,925 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:30:44,925 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:30:44,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-02-21 15:30:44,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:30:44,930 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:30:44,930 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 15:30:44,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-02-21 15:30:44,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:30:44,952 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:30:44,953 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:30:44,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 15:30:44,965 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61667872] [2021-02-21 15:30:44,965 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 15:30:44,965 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-21 15:30:44,966 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584690806] [2021-02-21 15:30:44,966 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-21 15:30:44,966 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-21 15:30:44,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-21 15:30:44,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-02-21 15:30:44,967 INFO L87 Difference]: Start difference. First operand 96 states and 110 transitions. Second operand 8 states. [2021-02-21 15:30:45,503 WARN L202 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 15:30:46,938 WARN L202 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 15:30:47,377 WARN L202 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 15:30:47,744 WARN L202 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 15:30:48,294 WARN L202 SmtUtils]: Spent 370.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 15:30:48,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 15:30:48,635 INFO L93 Difference]: Finished difference Result 284 states and 375 transitions. [2021-02-21 15:30:48,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-02-21 15:30:48,636 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 65 [2021-02-21 15:30:48,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 15:30:48,643 INFO L225 Difference]: With dead ends: 284 [2021-02-21 15:30:48,644 INFO L226 Difference]: Without dead ends: 212 [2021-02-21 15:30:48,645 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2021-02-21 15:30:48,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2021-02-21 15:30:48,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 166. [2021-02-21 15:30:48,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2021-02-21 15:30:48,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 197 transitions. [2021-02-21 15:30:48,702 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 197 transitions. Word has length 65 [2021-02-21 15:30:48,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 15:30:48,703 INFO L480 AbstractCegarLoop]: Abstraction has 166 states and 197 transitions. [2021-02-21 15:30:48,703 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-21 15:30:48,703 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 197 transitions. [2021-02-21 15:30:48,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-02-21 15:30:48,705 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 15:30:48,705 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] [2021-02-21 15:30:48,705 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-21 15:30:48,705 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 15:30:48,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 15:30:48,706 INFO L82 PathProgramCache]: Analyzing trace with hash 1737488146, now seen corresponding path program 1 times [2021-02-21 15:30:48,706 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 15:30:48,706 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494396047] [2021-02-21 15:30:48,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 15:30:48,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:30:48,768 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:30:48,768 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 15:30:48,771 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:30:48,772 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 15:30:48,772 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:30:48,773 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 15:30:48,773 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:30:48,774 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 15:30:48,774 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:30:48,775 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 15:30:48,775 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:30:48,776 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:30:49,098 WARN L202 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 15:30:49,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 15:30:49,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:30:49,141 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:30:49,142 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 15:30:49,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-02-21 15:30:49,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:30:49,145 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:30:49,145 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:30:49,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-02-21 15:30:49,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:30:49,148 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:30:49,149 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:30:49,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-02-21 15:30:49,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:30:49,152 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:30:49,152 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:30:49,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-02-21 15:30:49,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:30:49,155 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:30:49,155 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:30:49,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-02-21 15:30:49,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:30:49,165 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:30:49,167 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:30:49,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-02-21 15:30:49,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:30:49,200 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:30:49,201 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:30:49,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 15:30:49,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:30:49,203 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:30:49,204 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:30:49,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-02-21 15:30:49,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:30:49,206 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:30:49,207 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:30:49,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-02-21 15:30:49,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:30:49,210 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:30:49,211 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:30:49,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-02-21 15:30:49,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:30:49,215 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:30:49,215 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:30:49,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 15:30:49,229 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494396047] [2021-02-21 15:30:49,230 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 15:30:49,230 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-21 15:30:49,231 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917955536] [2021-02-21 15:30:49,232 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-21 15:30:49,234 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-21 15:30:49,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-21 15:30:49,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-21 15:30:49,236 INFO L87 Difference]: Start difference. First operand 166 states and 197 transitions. Second operand 6 states. [2021-02-21 15:30:49,715 WARN L202 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 15:30:50,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 15:30:50,279 INFO L93 Difference]: Finished difference Result 279 states and 345 transitions. [2021-02-21 15:30:50,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-21 15:30:50,280 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 69 [2021-02-21 15:30:50,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 15:30:50,282 INFO L225 Difference]: With dead ends: 279 [2021-02-21 15:30:50,282 INFO L226 Difference]: Without dead ends: 137 [2021-02-21 15:30:50,284 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-02-21 15:30:50,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2021-02-21 15:30:50,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 125. [2021-02-21 15:30:50,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2021-02-21 15:30:50,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 140 transitions. [2021-02-21 15:30:50,321 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 140 transitions. Word has length 69 [2021-02-21 15:30:50,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 15:30:50,321 INFO L480 AbstractCegarLoop]: Abstraction has 125 states and 140 transitions. [2021-02-21 15:30:50,322 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-21 15:30:50,322 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 140 transitions. [2021-02-21 15:30:50,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-02-21 15:30:50,323 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 15:30:50,323 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] [2021-02-21 15:30:50,323 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-21 15:30:50,324 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 15:30:50,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 15:30:50,324 INFO L82 PathProgramCache]: Analyzing trace with hash 1020746994, now seen corresponding path program 1 times [2021-02-21 15:30:50,324 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 15:30:50,324 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399625090] [2021-02-21 15:30:50,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 15:30:50,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 15:30:50,445 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 15:30:50,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 15:30:50,514 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 15:30:50,592 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-02-21 15:30:50,593 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-21 15:30:50,593 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-21 15:30:50,755 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 03:30:50 BoogieIcfgContainer [2021-02-21 15:30:50,755 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 15:30:50,756 INFO L168 Benchmark]: Toolchain (without parser) took 15627.90 ms. Allocated memory was 177.2 MB in the beginning and 381.7 MB in the end (delta: 204.5 MB). Free memory was 150.9 MB in the beginning and 317.3 MB in the end (delta: -166.5 MB). Peak memory consumption was 39.5 MB. Max. memory is 8.0 GB. [2021-02-21 15:30:50,760 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 177.2 MB. Free memory is still 148.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 15:30:50,760 INFO L168 Benchmark]: CACSL2BoogieTranslator took 623.55 ms. Allocated memory is still 177.2 MB. Free memory was 149.7 MB in the beginning and 130.2 MB in the end (delta: 19.6 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. [2021-02-21 15:30:50,761 INFO L168 Benchmark]: Boogie Preprocessor took 88.89 ms. Allocated memory is still 177.2 MB. Free memory was 130.2 MB in the beginning and 126.5 MB in the end (delta: 3.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2021-02-21 15:30:50,763 INFO L168 Benchmark]: RCFGBuilder took 1193.60 ms. Allocated memory is still 177.2 MB. Free memory was 126.2 MB in the beginning and 78.8 MB in the end (delta: 47.4 MB). Peak memory consumption was 46.8 MB. Max. memory is 8.0 GB. [2021-02-21 15:30:50,764 INFO L168 Benchmark]: TraceAbstraction took 13702.53 ms. Allocated memory was 177.2 MB in the beginning and 381.7 MB in the end (delta: 204.5 MB). Free memory was 78.3 MB in the beginning and 317.3 MB in the end (delta: -239.1 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 15:30:50,769 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 177.2 MB. Free memory is still 148.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 623.55 ms. Allocated memory is still 177.2 MB. Free memory was 149.7 MB in the beginning and 130.2 MB in the end (delta: 19.6 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 88.89 ms. Allocated memory is still 177.2 MB. Free memory was 130.2 MB in the beginning and 126.5 MB in the end (delta: 3.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1193.60 ms. Allocated memory is still 177.2 MB. Free memory was 126.2 MB in the beginning and 78.8 MB in the end (delta: 47.4 MB). Peak memory consumption was 46.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 13702.53 ms. Allocated memory was 177.2 MB in the beginning and 381.7 MB in the end (delta: 204.5 MB). Free memory was 78.3 MB in the beginning and 317.3 MB in the end (delta: -239.1 MB). There was no memory consumed. 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; VAL [\old(cleanupTimeShifts)=181, \old(head)=182, \old(head)=172, \old(methaneLevelCritical)=151, \old(pumpRunning)=144, \old(systemActive)=143, \old(waterLevel)=147, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L372] int retValue_acc ; [L373] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L377] FCALL select_helpers() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L378] FCALL select_features() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L379] CALL, EXPR valid_product() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L71] int retValue_acc ; [L74] retValue_acc = 1 [L75] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=1, systemActive=1, waterLevel=1] [L379] RET, EXPR valid_product() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, valid_product()=1, waterLevel=1] [L379] tmp = valid_product() [L381] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=1, waterLevel=1] [L383] FCALL setup() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=1, waterLevel=1] [L384] CALL runTest() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L366] CALL test() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L235] int splverifierCounter ; [L236] int tmp ; [L237] int tmp___0 ; [L238] int tmp___1 ; [L239] int tmp___2 ; [L242] splverifierCounter = 0 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L244] COND TRUE 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L246] COND TRUE splverifierCounter < 4 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L252] tmp = __VERIFIER_nondet_int() [L254] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=-1, waterLevel=1] [L256] CALL waterRise() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L780] COND TRUE waterLevel < 2 [L781] waterLevel = waterLevel + 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L256] RET waterRise() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=-1, waterLevel=2] [L262] tmp___0 = __VERIFIER_nondet_int() [L264] COND FALSE !(\read(tmp___0)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=-1, tmp___0=0, waterLevel=2] [L272] tmp___2 = __VERIFIER_nondet_int() [L274] COND TRUE \read(tmp___2) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=-1, tmp___0=0, tmp___2=1, waterLevel=2] [L287] CALL timeShift() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L105] COND FALSE !(\read(pumpRunning)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L112] COND TRUE \read(systemActive) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L114] CALL processEnvironment() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L134] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L137] COND FALSE !(\read(pumpRunning)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L152] FCALL processEnvironment__wrappee__base() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L114] RET processEnvironment() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L120] CALL __utac_acc__Specification3_spec__1() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L843] int tmp ; [L844] int tmp___0 ; [L845] int tmp___1 ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L849] CALL, EXPR isMethaneLevelCritical() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L801] int retValue_acc ; [L804] retValue_acc = methaneLevelCritical [L805] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=0, systemActive=1, waterLevel=2] [L849] RET, EXPR isMethaneLevelCritical() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L849] tmp = isMethaneLevelCritical() [L851] COND FALSE !(\read(tmp)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=0, waterLevel=2] [L855] CALL, EXPR getWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L833] int retValue_acc ; [L836] retValue_acc = waterLevel [L837] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, \result=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=2, systemActive=1, waterLevel=2] [L855] RET, EXPR getWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, getWaterLevel()=2, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=0, waterLevel=2] [L855] tmp___0 = getWaterLevel() [L857] COND TRUE tmp___0 == 2 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=0, tmp___0=2, waterLevel=2] [L859] CALL, EXPR isPumpRunning() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L186] int retValue_acc ; [L189] retValue_acc = pumpRunning [L190] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=0, systemActive=1, waterLevel=2] [L859] RET, EXPR isPumpRunning() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isPumpRunning()=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=0, tmp___0=2, waterLevel=2] [L859] tmp___1 = isPumpRunning() [L861] COND FALSE !(\read(tmp___1)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=0, tmp___0=2, tmp___1=0, waterLevel=2] [L865] CALL __automaton_fail() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L84] reach_error() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 36 procedures, 210 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 13.4s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 9.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 421 SDtfs, 606 SDslu, 224 SDs, 0 SdLazy, 1253 SolverSat, 368 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 131 GetRequests, 97 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 5.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=166occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 5 MinimizatonAttempts, 134 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.5s InterpolantComputationTime, 365 NumberOfCodeBlocks, 365 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 291 ConstructedInterpolants, 0 QuantifiedInterpolants, 87620 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, 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...