/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_product02.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-19 17:03:12,205 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-19 17:03:12,208 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-19 17:03:12,252 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-19 17:03:12,252 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-19 17:03:12,254 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-19 17:03:12,256 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-19 17:03:12,258 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-19 17:03:12,260 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-19 17:03:12,261 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-19 17:03:12,262 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-19 17:03:12,264 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-19 17:03:12,264 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-19 17:03:12,265 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-19 17:03:12,279 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-19 17:03:12,280 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-19 17:03:12,285 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-19 17:03:12,290 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-19 17:03:12,292 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-19 17:03:12,300 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-19 17:03:12,302 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-19 17:03:12,304 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-19 17:03:12,306 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-19 17:03:12,307 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-19 17:03:12,312 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-19 17:03:12,318 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-19 17:03:12,318 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-19 17:03:12,320 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-19 17:03:12,323 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-19 17:03:12,324 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-19 17:03:12,325 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-19 17:03:12,326 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-19 17:03:12,327 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-19 17:03:12,329 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-19 17:03:12,330 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-19 17:03:12,330 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-19 17:03:12,331 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-19 17:03:12,331 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-19 17:03:12,332 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-19 17:03:12,333 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-19 17:03:12,333 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-19 17:03:12,334 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 [2021-02-19 17:03:12,360 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-19 17:03:12,360 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-19 17:03:12,362 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-02-19 17:03:12,362 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-02-19 17:03:12,362 INFO L138 SettingsManager]: * Use SBE=true [2021-02-19 17:03:12,363 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-19 17:03:12,363 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-19 17:03:12,363 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-19 17:03:12,363 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-19 17:03:12,363 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-19 17:03:12,364 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-19 17:03:12,364 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-19 17:03:12,364 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-19 17:03:12,364 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-19 17:03:12,364 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-19 17:03:12,365 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-19 17:03:12,365 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-19 17:03:12,365 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-19 17:03:12,365 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-02-19 17:03:12,365 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-19 17:03:12,366 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-19 17:03:12,366 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-19 17:03:12,366 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-02-19 17:03:12,366 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-02-19 17:03:12,366 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-02-19 17:03:12,367 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-02-19 17:03:12,367 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-19 17:03:12,367 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-02-19 17:03:12,367 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-19 17:03:12,742 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-19 17:03:12,769 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-19 17:03:12,772 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-19 17:03:12,774 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-19 17:03:12,775 INFO L275 PluginConnector]: CDTParser initialized [2021-02-19 17:03:12,776 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product02.cil.c [2021-02-19 17:03:12,857 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d1f0f1015/cb90a6ccff0749b2acdbf02b79c22783/FLAG897633baa [2021-02-19 17:03:13,663 INFO L306 CDTParser]: Found 1 translation units. [2021-02-19 17:03:13,664 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product02.cil.c [2021-02-19 17:03:13,679 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d1f0f1015/cb90a6ccff0749b2acdbf02b79c22783/FLAG897633baa [2021-02-19 17:03:13,921 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d1f0f1015/cb90a6ccff0749b2acdbf02b79c22783 [2021-02-19 17:03:13,924 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-19 17:03:13,937 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-19 17:03:13,939 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-19 17:03:13,939 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-19 17:03:13,943 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-19 17:03:13,944 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.02 05:03:13" (1/1) ... [2021-02-19 17:03:13,945 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@282751e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:03:13, skipping insertion in model container [2021-02-19 17:03:13,946 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.02 05:03:13" (1/1) ... [2021-02-19 17:03:13,954 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-19 17:03:13,995 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-19 17:03:14,162 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product02.cil.c[1817,1830] [2021-02-19 17:03:14,319 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-19 17:03:14,337 INFO L203 MainTranslator]: Completed pre-run [2021-02-19 17:03:14,353 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product02.cil.c[1817,1830] [2021-02-19 17:03:14,419 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-19 17:03:14,456 INFO L208 MainTranslator]: Completed translation [2021-02-19 17:03:14,457 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:03:14 WrapperNode [2021-02-19 17:03:14,457 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-19 17:03:14,458 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-19 17:03:14,458 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-19 17:03:14,459 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-19 17:03:14,472 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:03:14" (1/1) ... [2021-02-19 17:03:14,473 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:03:14" (1/1) ... [2021-02-19 17:03:14,491 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:03:14" (1/1) ... [2021-02-19 17:03:14,492 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:03:14" (1/1) ... [2021-02-19 17:03:14,524 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:03:14" (1/1) ... [2021-02-19 17:03:14,534 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:03:14" (1/1) ... [2021-02-19 17:03:14,541 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:03:14" (1/1) ... [2021-02-19 17:03:14,550 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-19 17:03:14,551 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-19 17:03:14,551 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-19 17:03:14,551 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-19 17:03:14,553 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:03:14" (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 [2021-02-19 17:03:14,663 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-19 17:03:14,663 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-19 17:03:14,664 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-19 17:03:14,664 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-19 17:03:14,664 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-19 17:03:14,664 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-19 17:03:14,664 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-19 17:03:14,665 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-19 17:03:14,666 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-19 17:03:14,666 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-19 17:03:14,666 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-19 17:03:14,666 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-19 17:03:14,668 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-19 17:03:14,668 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-19 17:03:14,671 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-19 17:03:14,671 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-19 17:03:14,671 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-19 17:03:14,671 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-19 17:03:14,672 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-19 17:03:14,672 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-19 17:03:14,673 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-19 17:03:14,673 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-19 17:03:14,677 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2021-02-19 17:03:14,677 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2021-02-19 17:03:14,678 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-19 17:03:14,678 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-19 17:03:14,678 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-19 17:03:14,678 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-19 17:03:14,695 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-19 17:03:14,697 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-19 17:03:14,697 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-19 17:03:14,697 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-19 17:03:14,697 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-19 17:03:14,697 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-19 17:03:14,697 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-19 17:03:14,697 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-19 17:03:14,698 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-19 17:03:14,698 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-19 17:03:14,698 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-19 17:03:14,698 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-19 17:03:14,698 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-19 17:03:14,698 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-19 17:03:14,698 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-19 17:03:14,699 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-19 17:03:14,699 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-19 17:03:14,699 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-19 17:03:14,699 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-19 17:03:14,699 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-19 17:03:14,699 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-19 17:03:14,700 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-19 17:03:14,700 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-19 17:03:14,700 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-19 17:03:14,700 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-19 17:03:14,700 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-19 17:03:14,700 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-19 17:03:14,700 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-19 17:03:14,700 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-19 17:03:14,701 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-19 17:03:14,701 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-19 17:03:14,701 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-19 17:03:14,701 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-19 17:03:14,701 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-19 17:03:14,701 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-19 17:03:14,701 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-19 17:03:14,702 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-19 17:03:14,702 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-19 17:03:14,702 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-19 17:03:14,703 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-19 17:03:14,703 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-19 17:03:14,703 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-19 17:03:14,703 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2021-02-19 17:03:14,703 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2021-02-19 17:03:14,704 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-19 17:03:14,704 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-19 17:03:14,704 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-19 17:03:14,704 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-19 17:03:14,705 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-19 17:03:14,705 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-19 17:03:14,705 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-19 17:03:14,706 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-19 17:03:14,706 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-19 17:03:14,706 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-19 17:03:14,706 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-19 17:03:14,707 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-19 17:03:14,707 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-19 17:03:14,708 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-19 17:03:15,917 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-19 17:03:15,917 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-19 17:03:15,920 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 05:03:15 BoogieIcfgContainer [2021-02-19 17:03:15,920 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-19 17:03:15,922 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-19 17:03:15,922 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-19 17:03:15,926 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-19 17:03:15,926 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.02 05:03:13" (1/3) ... [2021-02-19 17:03:15,927 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dfe8765 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.02 05:03:15, skipping insertion in model container [2021-02-19 17:03:15,927 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:03:14" (2/3) ... [2021-02-19 17:03:15,928 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dfe8765 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.02 05:03:15, skipping insertion in model container [2021-02-19 17:03:15,928 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 05:03:15" (3/3) ... [2021-02-19 17:03:15,930 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product02.cil.c [2021-02-19 17:03:15,941 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-02-19 17:03:15,948 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-19 17:03:15,969 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-19 17:03:15,998 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-19 17:03:15,999 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-19 17:03:15,999 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-02-19 17:03:15,999 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-19 17:03:15,999 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-19 17:03:15,999 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-19 17:03:15,999 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-19 17:03:16,000 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-19 17:03:16,023 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states. [2021-02-19 17:03:16,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-02-19 17:03:16,033 INFO L414 BasicCegarLoop]: Found error trace [2021-02-19 17:03:16,034 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] [2021-02-19 17:03:16,035 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-19 17:03:16,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 17:03:16,042 INFO L82 PathProgramCache]: Analyzing trace with hash -1657563372, now seen corresponding path program 1 times [2021-02-19 17:03:16,053 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 17:03:16,054 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046001671] [2021-02-19 17:03:16,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 17:03:16,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:03:16,442 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:03:16,443 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:03:16,445 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:03:16,445 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:03:16,787 WARN L202 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-19 17:03:16,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-19 17:03:16,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:03:16,836 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:03:16,837 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:03:16,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-02-19 17:03:16,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:03:16,842 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:03:16,842 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:03:16,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-02-19 17:03:16,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:03:16,846 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:03:16,846 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:03:16,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-02-19 17:03:16,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:03:16,850 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:03:16,851 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:03:16,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-02-19 17:03:16,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:03:16,854 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:03:16,855 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:03:16,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-02-19 17:03:16,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:03:16,859 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:03:16,860 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:03:16,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-02-19 17:03:16,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:03:16,864 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:03:16,865 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:03:16,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-02-19 17:03:16,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:03:16,873 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:03:16,874 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:03:16,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 17:03:16,901 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046001671] [2021-02-19 17:03:16,902 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 17:03:16,902 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-19 17:03:16,903 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335646767] [2021-02-19 17:03:16,910 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-19 17:03:16,910 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 17:03:16,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-19 17:03:16,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-19 17:03:16,930 INFO L87 Difference]: Start difference. First operand 137 states. Second operand 3 states. [2021-02-19 17:03:17,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 17:03:17,888 INFO L93 Difference]: Finished difference Result 220 states and 294 transitions. [2021-02-19 17:03:17,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-19 17:03:17,891 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2021-02-19 17:03:17,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 17:03:17,903 INFO L225 Difference]: With dead ends: 220 [2021-02-19 17:03:17,904 INFO L226 Difference]: Without dead ends: 120 [2021-02-19 17:03:17,908 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 [2021-02-19 17:03:17,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2021-02-19 17:03:17,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 91. [2021-02-19 17:03:17,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2021-02-19 17:03:17,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 105 transitions. [2021-02-19 17:03:17,990 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 105 transitions. Word has length 52 [2021-02-19 17:03:17,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 17:03:17,991 INFO L480 AbstractCegarLoop]: Abstraction has 91 states and 105 transitions. [2021-02-19 17:03:17,991 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-19 17:03:17,991 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 105 transitions. [2021-02-19 17:03:17,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-02-19 17:03:17,994 INFO L414 BasicCegarLoop]: Found error trace [2021-02-19 17:03:17,995 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] [2021-02-19 17:03:17,995 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-19 17:03:17,995 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-19 17:03:17,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 17:03:17,996 INFO L82 PathProgramCache]: Analyzing trace with hash 1446471448, now seen corresponding path program 1 times [2021-02-19 17:03:17,996 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 17:03:17,996 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057789882] [2021-02-19 17:03:17,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 17:03:18,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:03:18,130 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:03:18,131 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:03:18,132 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:03:18,132 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 17:03:18,136 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:03:18,137 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:03:18,449 WARN L202 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-19 17:03:18,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-19 17:03:18,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:03:18,485 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:03:18,486 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:03:18,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-02-19 17:03:18,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:03:18,489 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:03:18,489 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:03:18,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-02-19 17:03:18,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:03:18,496 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:03:18,496 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:03:18,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-02-19 17:03:18,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:03:18,500 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:03:18,500 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:03:18,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-02-19 17:03:18,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:03:18,517 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:03:18,520 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:03:18,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-02-19 17:03:18,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:03:18,527 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:03:18,530 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:03:18,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-02-19 17:03:18,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:03:18,535 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:03:18,536 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:03:18,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-02-19 17:03:18,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:03:18,539 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:03:18,542 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:03:18,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 17:03:18,554 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057789882] [2021-02-19 17:03:18,554 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 17:03:18,555 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-19 17:03:18,555 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316858598] [2021-02-19 17:03:18,558 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-19 17:03:18,558 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 17:03:18,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-19 17:03:18,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-19 17:03:18,559 INFO L87 Difference]: Start difference. First operand 91 states and 105 transitions. Second operand 4 states. [2021-02-19 17:03:19,119 WARN L202 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-19 17:03:19,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 17:03:19,727 INFO L93 Difference]: Finished difference Result 149 states and 181 transitions. [2021-02-19 17:03:19,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-19 17:03:19,728 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2021-02-19 17:03:19,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 17:03:19,730 INFO L225 Difference]: With dead ends: 149 [2021-02-19 17:03:19,730 INFO L226 Difference]: Without dead ends: 104 [2021-02-19 17:03:19,732 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 [2021-02-19 17:03:19,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2021-02-19 17:03:19,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 82. [2021-02-19 17:03:19,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2021-02-19 17:03:19,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 93 transitions. [2021-02-19 17:03:19,774 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 93 transitions. Word has length 53 [2021-02-19 17:03:19,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 17:03:19,774 INFO L480 AbstractCegarLoop]: Abstraction has 82 states and 93 transitions. [2021-02-19 17:03:19,774 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-19 17:03:19,775 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 93 transitions. [2021-02-19 17:03:19,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-02-19 17:03:19,777 INFO L414 BasicCegarLoop]: Found error trace [2021-02-19 17:03:19,777 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] [2021-02-19 17:03:19,777 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-19 17:03:19,777 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-19 17:03:19,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 17:03:19,778 INFO L82 PathProgramCache]: Analyzing trace with hash 1314219613, now seen corresponding path program 1 times [2021-02-19 17:03:19,778 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 17:03:19,778 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913788770] [2021-02-19 17:03:19,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 17:03:19,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:03:19,869 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:03:19,869 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 17:03:19,873 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:03:19,874 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 17:03:19,874 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:03:19,875 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 17:03:19,879 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:03:19,880 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 17:03:19,885 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:03:19,885 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-19 17:03:19,892 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:03:19,892 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-19 17:03:19,893 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:03:19,893 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-19 17:03:19,894 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:03:19,894 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:03:20,240 WARN L202 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-19 17:03:20,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-19 17:03:20,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:03:20,281 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:03:20,281 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-19 17:03:20,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-02-19 17:03:20,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:03:20,287 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:03:20,288 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:03:20,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-02-19 17:03:20,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:03:20,291 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:03:20,291 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:03:20,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-02-19 17:03:20,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:03:20,312 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-19 17:03:20,315 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-19 17:03:20,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-02-19 17:03:20,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:03:20,340 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:03:20,340 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:03:20,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-02-19 17:03:20,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:03:20,349 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:03:20,350 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:03:20,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-02-19 17:03:20,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:03:20,353 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:03:20,353 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:03:20,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-02-19 17:03:20,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:03:20,358 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:03:20,358 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:03:20,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 17:03:20,369 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913788770] [2021-02-19 17:03:20,369 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 17:03:20,369 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-19 17:03:20,370 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482136040] [2021-02-19 17:03:20,370 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-19 17:03:20,370 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 17:03:20,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-19 17:03:20,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-02-19 17:03:20,376 INFO L87 Difference]: Start difference. First operand 82 states and 93 transitions. Second operand 8 states. [2021-02-19 17:03:20,817 WARN L202 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-19 17:03:21,253 WARN L202 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-19 17:03:21,598 WARN L202 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-19 17:03:21,966 WARN L202 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-19 17:03:22,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 17:03:22,823 INFO L93 Difference]: Finished difference Result 162 states and 199 transitions. [2021-02-19 17:03:22,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-02-19 17:03:22,823 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 58 [2021-02-19 17:03:22,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 17:03:22,825 INFO L225 Difference]: With dead ends: 162 [2021-02-19 17:03:22,825 INFO L226 Difference]: Without dead ends: 104 [2021-02-19 17:03:22,826 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2021-02-19 17:03:22,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2021-02-19 17:03:22,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 82. [2021-02-19 17:03:22,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2021-02-19 17:03:22,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 92 transitions. [2021-02-19 17:03:22,861 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 92 transitions. Word has length 58 [2021-02-19 17:03:22,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 17:03:22,862 INFO L480 AbstractCegarLoop]: Abstraction has 82 states and 92 transitions. [2021-02-19 17:03:22,862 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-19 17:03:22,862 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 92 transitions. [2021-02-19 17:03:22,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-02-19 17:03:22,864 INFO L414 BasicCegarLoop]: Found error trace [2021-02-19 17:03:22,864 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] [2021-02-19 17:03:22,864 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-19 17:03:22,864 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-19 17:03:22,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 17:03:22,865 INFO L82 PathProgramCache]: Analyzing trace with hash -546439326, now seen corresponding path program 1 times [2021-02-19 17:03:22,865 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 17:03:22,865 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728508390] [2021-02-19 17:03:22,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 17:03:22,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:03:22,993 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:03:22,994 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 17:03:22,999 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:03:23,000 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 17:03:23,000 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:03:23,001 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 17:03:23,003 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:03:23,003 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 17:03:23,004 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:03:23,005 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 17:03:23,006 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:03:23,008 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 17:03:23,012 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:03:23,012 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 17:03:23,020 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:03:23,020 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:03:23,342 WARN L202 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-19 17:03:23,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-19 17:03:23,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:03:23,378 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:03:23,379 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-19 17:03:23,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-02-19 17:03:23,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:03:23,382 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:03:23,383 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:03:23,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-02-19 17:03:23,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:03:23,386 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:03:23,386 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:03:23,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-02-19 17:03:23,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:03:23,390 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:03:23,391 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:03:23,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-02-19 17:03:23,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:03:23,394 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:03:23,394 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:03:23,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-02-19 17:03:23,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:03:23,397 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:03:23,398 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:03:23,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-02-19 17:03:23,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:03:23,402 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:03:23,402 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:03:23,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-02-19 17:03:23,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:03:23,407 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:03:23,408 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 17:03:23,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-02-19 17:03:23,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:03:23,421 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:03:23,422 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:03:23,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 17:03:23,437 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728508390] [2021-02-19 17:03:23,437 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 17:03:23,437 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-19 17:03:23,437 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072005876] [2021-02-19 17:03:23,438 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-19 17:03:23,438 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 17:03:23,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-19 17:03:23,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-02-19 17:03:23,439 INFO L87 Difference]: Start difference. First operand 82 states and 92 transitions. Second operand 7 states. [2021-02-19 17:03:23,911 WARN L202 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-19 17:03:25,013 WARN L202 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-19 17:03:25,409 WARN L202 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-19 17:03:25,755 WARN L202 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-19 17:03:26,136 WARN L202 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-19 17:03:26,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 17:03:26,421 INFO L93 Difference]: Finished difference Result 209 states and 259 transitions. [2021-02-19 17:03:26,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-02-19 17:03:26,422 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 61 [2021-02-19 17:03:26,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 17:03:26,425 INFO L225 Difference]: With dead ends: 209 [2021-02-19 17:03:26,425 INFO L226 Difference]: Without dead ends: 151 [2021-02-19 17:03:26,426 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-02-19 17:03:26,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2021-02-19 17:03:26,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 136. [2021-02-19 17:03:26,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2021-02-19 17:03:26,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 158 transitions. [2021-02-19 17:03:26,475 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 158 transitions. Word has length 61 [2021-02-19 17:03:26,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 17:03:26,476 INFO L480 AbstractCegarLoop]: Abstraction has 136 states and 158 transitions. [2021-02-19 17:03:26,476 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-19 17:03:26,476 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 158 transitions. [2021-02-19 17:03:26,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-02-19 17:03:26,478 INFO L414 BasicCegarLoop]: Found error trace [2021-02-19 17:03:26,478 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] [2021-02-19 17:03:26,479 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-19 17:03:26,479 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-19 17:03:26,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 17:03:26,479 INFO L82 PathProgramCache]: Analyzing trace with hash 836480680, now seen corresponding path program 1 times [2021-02-19 17:03:26,480 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 17:03:26,480 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495643149] [2021-02-19 17:03:26,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 17:03:26,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-19 17:03:26,554 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-19 17:03:26,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-19 17:03:26,619 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-19 17:03:26,691 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-02-19 17:03:26,691 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-19 17:03:26,691 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-19 17:03:26,834 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.02 05:03:26 BoogieIcfgContainer [2021-02-19 17:03:26,835 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-19 17:03:26,839 INFO L168 Benchmark]: Toolchain (without parser) took 12913.40 ms. Allocated memory was 170.9 MB in the beginning and 297.8 MB in the end (delta: 126.9 MB). Free memory was 144.4 MB in the beginning and 154.4 MB in the end (delta: -10.0 MB). Peak memory consumption was 118.3 MB. Max. memory is 8.0 GB. [2021-02-19 17:03:26,840 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 170.9 MB. Free memory is still 142.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-19 17:03:26,840 INFO L168 Benchmark]: CACSL2BoogieTranslator took 518.17 ms. Allocated memory is still 170.9 MB. Free memory was 143.2 MB in the beginning and 124.0 MB in the end (delta: 19.2 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. [2021-02-19 17:03:26,841 INFO L168 Benchmark]: Boogie Preprocessor took 92.02 ms. Allocated memory is still 170.9 MB. Free memory was 124.0 MB in the beginning and 120.3 MB in the end (delta: 3.7 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2021-02-19 17:03:26,843 INFO L168 Benchmark]: RCFGBuilder took 1368.94 ms. Allocated memory is still 170.9 MB. Free memory was 120.1 MB in the beginning and 71.3 MB in the end (delta: 48.7 MB). Peak memory consumption was 48.7 MB. Max. memory is 8.0 GB. [2021-02-19 17:03:26,846 INFO L168 Benchmark]: TraceAbstraction took 10913.01 ms. Allocated memory was 170.9 MB in the beginning and 297.8 MB in the end (delta: 126.9 MB). Free memory was 70.8 MB in the beginning and 154.4 MB in the end (delta: -83.6 MB). Peak memory consumption was 44.4 MB. Max. memory is 8.0 GB. [2021-02-19 17:03:26,849 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 170.9 MB. Free memory is still 142.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 518.17 ms. Allocated memory is still 170.9 MB. Free memory was 143.2 MB in the beginning and 124.0 MB in the end (delta: 19.2 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 92.02 ms. Allocated memory is still 170.9 MB. Free memory was 124.0 MB in the beginning and 120.3 MB in the end (delta: 3.7 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1368.94 ms. Allocated memory is still 170.9 MB. Free memory was 120.1 MB in the beginning and 71.3 MB in the end (delta: 48.7 MB). Peak memory consumption was 48.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 10913.01 ms. Allocated memory was 170.9 MB in the beginning and 297.8 MB in the end (delta: 126.9 MB). Free memory was 70.8 MB in the beginning and 154.4 MB in the end (delta: -83.6 MB). Peak memory consumption was 44.4 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 84]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L258] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L464] int pumpRunning = 0; [L465] int systemActive = 1; [L685] int cleanupTimeShifts = 4; [L781] int waterLevel = 1; [L782] int methaneLevelCritical = 0; VAL [\old(cleanupTimeShifts)=179, \old(head)=164, \old(head)=182, \old(methaneLevelCritical)=145, \old(pumpRunning)=133, \old(systemActive)=132, \old(waterLevel)=138, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L758] int retValue_acc ; [L759] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L763] FCALL select_helpers() VAL [\old(methaneLevelCritical)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L764] FCALL select_features() VAL [\old(methaneLevelCritical)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L765] CALL, EXPR valid_product() VAL [\old(methaneLevelCritical)=0, \old(systemActive)=1, \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(systemActive)=1, \old(waterLevel)=1, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=1, systemActive=1, waterLevel=1] [L765] RET, EXPR valid_product() VAL [\old(methaneLevelCritical)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, valid_product()=1, waterLevel=1] [L765] tmp = valid_product() [L767] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=1, waterLevel=1] [L769] FCALL setup() VAL [\old(methaneLevelCritical)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=1, waterLevel=1] [L770] CALL runTest() VAL [\old(methaneLevelCritical)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L752] CALL test() VAL [\old(methaneLevelCritical)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L619] int splverifierCounter ; [L620] int tmp ; [L621] int tmp___0 ; [L622] int tmp___1 ; [L623] int tmp___2 ; [L626] splverifierCounter = 0 VAL [\old(methaneLevelCritical)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L628] COND TRUE 1 VAL [\old(methaneLevelCritical)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L630] COND TRUE splverifierCounter < 4 VAL [\old(methaneLevelCritical)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L636] tmp = __VERIFIER_nondet_int() [L638] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=1] [L640] CALL waterRise() VAL [\old(methaneLevelCritical)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L799] COND TRUE waterLevel < 2 [L800] waterLevel = waterLevel + 1 VAL [\old(methaneLevelCritical)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L640] RET waterRise() VAL [\old(methaneLevelCritical)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=2] [L646] tmp___0 = __VERIFIER_nondet_int() [L648] COND FALSE !(\read(tmp___0)) VAL [\old(methaneLevelCritical)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, waterLevel=2] [L656] tmp___2 = __VERIFIER_nondet_int() [L658] COND FALSE !(\read(tmp___2)) [L664] tmp___1 = __VERIFIER_nondet_int() [L666] COND TRUE \read(tmp___1) VAL [\old(methaneLevelCritical)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, tmp___1=1, tmp___2=0, waterLevel=2] [L673] CALL timeShift() VAL [\old(methaneLevelCritical)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L472] COND FALSE !(\read(pumpRunning)) VAL [\old(methaneLevelCritical)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L479] COND TRUE \read(systemActive) VAL [\old(methaneLevelCritical)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L481] FCALL processEnvironment() VAL [\old(methaneLevelCritical)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L487] CALL __utac_acc__Specification3_spec__1() VAL [\old(methaneLevelCritical)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L582] int tmp ; [L583] int tmp___0 ; [L584] int tmp___1 ; VAL [\old(methaneLevelCritical)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L588] CALL, EXPR isMethaneLevelCritical() VAL [\old(methaneLevelCritical)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L820] int retValue_acc ; [L823] retValue_acc = methaneLevelCritical [L824] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(systemActive)=1, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=0, systemActive=1, waterLevel=2] [L588] RET, EXPR isMethaneLevelCritical() VAL [\old(methaneLevelCritical)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L588] tmp = isMethaneLevelCritical() [L590] COND FALSE !(\read(tmp)) VAL [\old(methaneLevelCritical)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=0, waterLevel=2] [L594] CALL, EXPR getWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L852] int retValue_acc ; [L855] retValue_acc = waterLevel [L856] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(systemActive)=1, \old(waterLevel)=2, \result=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=2, systemActive=1, waterLevel=2] [L594] RET, EXPR getWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, getWaterLevel()=2, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=0, waterLevel=2] [L594] tmp___0 = getWaterLevel() [L596] COND TRUE tmp___0 == 2 VAL [\old(methaneLevelCritical)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=0, tmp___0=2, waterLevel=2] [L598] CALL, EXPR isPumpRunning() VAL [\old(methaneLevelCritical)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L527] int retValue_acc ; [L530] retValue_acc = pumpRunning [L531] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(systemActive)=1, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=0, systemActive=1, waterLevel=2] [L598] RET, EXPR isPumpRunning() VAL [\old(methaneLevelCritical)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isPumpRunning()=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=0, tmp___0=2, waterLevel=2] [L598] tmp___1 = isPumpRunning() [L600] COND FALSE !(\read(tmp___1)) VAL [\old(methaneLevelCritical)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=0, tmp___0=2, tmp___1=0, waterLevel=2] [L604] CALL __automaton_fail() VAL [\old(methaneLevelCritical)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L84] reach_error() VAL [\old(methaneLevelCritical)=0, \old(systemActive)=1, \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, 204 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 10.6s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 7.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 312 SDtfs, 411 SDslu, 187 SDs, 0 SdLazy, 913 SolverSat, 256 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 99 GetRequests, 74 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 4.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=137occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 4 MinimizatonAttempts, 88 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 289 NumberOfCodeBlocks, 289 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 220 ConstructedInterpolants, 0 QuantifiedInterpolants, 64892 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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...