/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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_spec4_product41.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 12:40:24,278 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 12:40:24,282 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 12:40:24,311 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 12:40:24,311 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 12:40:24,312 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 12:40:24,317 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 12:40:24,320 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 12:40:24,323 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 12:40:24,324 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 12:40:24,325 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 12:40:24,328 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 12:40:24,329 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 12:40:24,331 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 12:40:24,334 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 12:40:24,336 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 12:40:24,337 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 12:40:24,340 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 12:40:24,342 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 12:40:24,347 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 12:40:24,351 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 12:40:24,352 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 12:40:24,354 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 12:40:24,355 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 12:40:24,360 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-04 12:40:24,360 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-04 12:40:24,360 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-04 12:40:24,363 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-04 12:40:24,364 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-04 12:40:24,375 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-04 12:40:24,378 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-04 12:40:24,379 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-04 12:40:24,380 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-04 12:40:24,381 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-04 12:40:24,382 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-04 12:40:24,382 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-04 12:40:24,383 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-04 12:40:24,383 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-04 12:40:24,383 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 12:40:24,390 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 12:40:24,393 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 12:40:24,394 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-04 12:40:24,442 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 12:40:24,442 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 12:40:24,444 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-04 12:40:24,444 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-04 12:40:24,444 INFO L138 SettingsManager]: * Use SBE=true [2020-09-04 12:40:24,445 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 12:40:24,445 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 12:40:24,445 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 12:40:24,445 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 12:40:24,445 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 12:40:24,446 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 12:40:24,446 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 12:40:24,446 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 12:40:24,446 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 12:40:24,446 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 12:40:24,447 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 12:40:24,447 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 12:40:24,447 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 12:40:24,447 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-04 12:40:24,447 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 12:40:24,448 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 12:40:24,448 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 12:40:24,448 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 12:40:24,448 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-04 12:40:24,448 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-04 12:40:24,449 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-04 12:40:24,449 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-04 12:40:24,449 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 12:40:24,449 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-04 12:40:24,449 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-09-04 12:40:24,918 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 12:40:24,935 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 12:40:24,939 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 12:40:24,943 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 12:40:24,944 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 12:40:24,945 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product41.cil.c [2020-09-04 12:40:25,040 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c7a517aab/86341669354a4872a5bd8f0521b2e19e/FLAGbbb69e149 [2020-09-04 12:40:25,679 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 12:40:25,680 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product41.cil.c [2020-09-04 12:40:25,696 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c7a517aab/86341669354a4872a5bd8f0521b2e19e/FLAGbbb69e149 [2020-09-04 12:40:25,951 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c7a517aab/86341669354a4872a5bd8f0521b2e19e [2020-09-04 12:40:25,963 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 12:40:25,966 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 12:40:25,967 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 12:40:25,967 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 12:40:25,972 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 12:40:25,973 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 12:40:25" (1/1) ... [2020-09-04 12:40:25,978 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f8d7276 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 12:40:25, skipping insertion in model container [2020-09-04 12:40:25,978 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 12:40:25" (1/1) ... [2020-09-04 12:40:25,987 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 12:40:26,044 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 12:40:26,407 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 12:40:26,424 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 12:40:26,675 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 12:40:26,708 INFO L208 MainTranslator]: Completed translation [2020-09-04 12:40:26,708 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 12:40:26 WrapperNode [2020-09-04 12:40:26,708 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 12:40:26,709 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 12:40:26,709 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 12:40:26,710 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 12:40:26,723 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 12:40:26" (1/1) ... [2020-09-04 12:40:26,724 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 12:40:26" (1/1) ... [2020-09-04 12:40:26,745 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 12:40:26" (1/1) ... [2020-09-04 12:40:26,745 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 12:40:26" (1/1) ... [2020-09-04 12:40:26,781 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 12:40:26" (1/1) ... [2020-09-04 12:40:26,794 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 12:40:26" (1/1) ... [2020-09-04 12:40:26,800 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 12:40:26" (1/1) ... [2020-09-04 12:40:26,808 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 12:40:26,808 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 12:40:26,808 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 12:40:26,809 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 12:40:26,810 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 12:40:26" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-04 12:40:26,885 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 12:40:26,885 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 12:40:26,885 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-04 12:40:26,886 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-04 12:40:26,886 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-04 12:40:26,886 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-04 12:40:26,886 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-04 12:40:26,886 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-04 12:40:26,886 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-04 12:40:26,886 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-09-04 12:40:26,887 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-09-04 12:40:26,887 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-04 12:40:26,887 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-04 12:40:26,887 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-04 12:40:26,888 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-04 12:40:26,888 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-04 12:40:26,888 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-04 12:40:26,888 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-04 12:40:26,888 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-04 12:40:26,889 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-04 12:40:26,889 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-04 12:40:26,889 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-04 12:40:26,889 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-04 12:40:26,890 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-04 12:40:26,890 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-04 12:40:26,890 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-04 12:40:26,890 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-09-04 12:40:26,890 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-04 12:40:26,890 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-04 12:40:26,890 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-04 12:40:26,891 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-04 12:40:26,891 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-04 12:40:26,891 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-09-04 12:40:26,891 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-04 12:40:26,891 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-04 12:40:26,892 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-04 12:40:26,892 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-04 12:40:26,892 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 12:40:26,892 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 12:40:26,892 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 12:40:26,892 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-04 12:40:26,892 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-04 12:40:26,892 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-04 12:40:26,893 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-04 12:40:26,893 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-04 12:40:26,893 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-04 12:40:26,893 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-04 12:40:26,893 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-09-04 12:40:26,893 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-04 12:40:26,893 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-04 12:40:26,893 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-04 12:40:26,893 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-09-04 12:40:26,894 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-04 12:40:26,894 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-04 12:40:26,894 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-04 12:40:26,894 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-04 12:40:26,894 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-04 12:40:26,894 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-04 12:40:26,894 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-04 12:40:26,894 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-04 12:40:26,894 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-04 12:40:26,894 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-04 12:40:26,895 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-04 12:40:26,895 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-04 12:40:26,895 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-04 12:40:26,895 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 12:40:26,895 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-04 12:40:26,895 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-04 12:40:26,895 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-04 12:40:26,895 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-04 12:40:26,896 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-04 12:40:26,896 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-04 12:40:26,896 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-04 12:40:26,896 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-04 12:40:26,896 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-04 12:40:26,896 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-04 12:40:26,896 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-04 12:40:26,897 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-04 12:40:26,897 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-04 12:40:26,897 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-04 12:40:26,897 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-09-04 12:40:26,897 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-09-04 12:40:26,897 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-04 12:40:26,897 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-04 12:40:26,898 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-04 12:40:26,898 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-04 12:40:26,898 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 12:40:26,898 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 12:40:26,898 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-04 12:40:26,899 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 12:40:28,055 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 12:40:28,056 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-04 12:40:28,064 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 12:40:28 BoogieIcfgContainer [2020-09-04 12:40:28,064 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 12:40:28,065 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 12:40:28,065 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 12:40:28,069 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 12:40:28,069 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 12:40:25" (1/3) ... [2020-09-04 12:40:28,070 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c68976 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 12:40:28, skipping insertion in model container [2020-09-04 12:40:28,070 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 12:40:26" (2/3) ... [2020-09-04 12:40:28,071 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c68976 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 12:40:28, skipping insertion in model container [2020-09-04 12:40:28,071 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 12:40:28" (3/3) ... [2020-09-04 12:40:28,073 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product41.cil.c [2020-09-04 12:40:28,085 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-09-04 12:40:28,096 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 12:40:28,116 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 12:40:28,143 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 12:40:28,143 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 12:40:28,143 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-04 12:40:28,144 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 12:40:28,144 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 12:40:28,144 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 12:40:28,144 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 12:40:28,144 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 12:40:28,168 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states. [2020-09-04 12:40:28,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-09-04 12:40:28,180 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 12:40:28,181 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] [2020-09-04 12:40:28,181 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 12:40:28,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 12:40:28,188 INFO L82 PathProgramCache]: Analyzing trace with hash -219528545, now seen corresponding path program 1 times [2020-09-04 12:40:28,198 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 12:40:28,199 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206130598] [2020-09-04 12:40:28,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 12:40:28,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:40:28,961 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 12:40:28,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 12:40:28,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:40:29,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 12:40:29,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:40:29,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-04 12:40:29,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:40:29,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-04 12:40:29,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:40:29,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-04 12:40:29,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:40:29,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-09-04 12:40:29,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:40:29,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-09-04 12:40:29,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:40:29,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 12:40:29,091 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206130598] [2020-09-04 12:40:29,093 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 12:40:29,096 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 12:40:29,097 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032616396] [2020-09-04 12:40:29,105 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 12:40:29,105 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 12:40:29,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 12:40:29,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 12:40:29,127 INFO L87 Difference]: Start difference. First operand 163 states. Second operand 3 states. [2020-09-04 12:40:30,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 12:40:30,249 INFO L93 Difference]: Finished difference Result 281 states and 365 transitions. [2020-09-04 12:40:30,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 12:40:30,252 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-09-04 12:40:30,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 12:40:30,270 INFO L225 Difference]: With dead ends: 281 [2020-09-04 12:40:30,270 INFO L226 Difference]: Without dead ends: 152 [2020-09-04 12:40:30,276 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 12:40:30,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2020-09-04 12:40:30,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 120. [2020-09-04 12:40:30,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-09-04 12:40:30,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 139 transitions. [2020-09-04 12:40:30,378 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 139 transitions. Word has length 46 [2020-09-04 12:40:30,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 12:40:30,378 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 139 transitions. [2020-09-04 12:40:30,378 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 12:40:30,379 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 139 transitions. [2020-09-04 12:40:30,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-09-04 12:40:30,382 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 12:40:30,382 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] [2020-09-04 12:40:30,383 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 12:40:30,383 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 12:40:30,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 12:40:30,383 INFO L82 PathProgramCache]: Analyzing trace with hash 207659306, now seen corresponding path program 1 times [2020-09-04 12:40:30,384 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 12:40:30,384 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563312832] [2020-09-04 12:40:30,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 12:40:30,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:40:30,852 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 12:40:30,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 12:40:30,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:40:30,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 12:40:30,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:40:30,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-04 12:40:30,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:40:30,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-04 12:40:30,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:40:30,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-04 12:40:30,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:40:30,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-04 12:40:30,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:40:30,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-04 12:40:30,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:40:30,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 12:40:30,911 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563312832] [2020-09-04 12:40:30,911 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 12:40:30,912 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 12:40:30,912 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701814033] [2020-09-04 12:40:30,914 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 12:40:30,914 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 12:40:30,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 12:40:30,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 12:40:30,915 INFO L87 Difference]: Start difference. First operand 120 states and 139 transitions. Second operand 4 states. [2020-09-04 12:40:31,393 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 12:40:32,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 12:40:32,240 INFO L93 Difference]: Finished difference Result 214 states and 256 transitions. [2020-09-04 12:40:32,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-04 12:40:32,245 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-09-04 12:40:32,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 12:40:32,248 INFO L225 Difference]: With dead ends: 214 [2020-09-04 12:40:32,249 INFO L226 Difference]: Without dead ends: 136 [2020-09-04 12:40:32,250 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-04 12:40:32,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-09-04 12:40:32,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 111. [2020-09-04 12:40:32,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-09-04 12:40:32,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 127 transitions. [2020-09-04 12:40:32,304 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 127 transitions. Word has length 47 [2020-09-04 12:40:32,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 12:40:32,305 INFO L479 AbstractCegarLoop]: Abstraction has 111 states and 127 transitions. [2020-09-04 12:40:32,305 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 12:40:32,305 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 127 transitions. [2020-09-04 12:40:32,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-04 12:40:32,317 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 12:40:32,317 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] [2020-09-04 12:40:32,318 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 12:40:32,318 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 12:40:32,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 12:40:32,318 INFO L82 PathProgramCache]: Analyzing trace with hash 1269439858, now seen corresponding path program 1 times [2020-09-04 12:40:32,318 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 12:40:32,319 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881779802] [2020-09-04 12:40:32,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 12:40:32,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:40:32,730 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 12:40:32,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 12:40:32,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:40:32,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 12:40:32,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:40:32,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-04 12:40:32,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:40:32,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-04 12:40:32,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:40:32,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-04 12:40:32,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:40:32,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-04 12:40:32,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:40:32,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-04 12:40:32,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:40:32,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 12:40:32,870 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881779802] [2020-09-04 12:40:32,870 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 12:40:32,870 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-04 12:40:32,871 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953166866] [2020-09-04 12:40:32,871 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-04 12:40:32,871 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 12:40:32,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-04 12:40:32,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-04 12:40:32,872 INFO L87 Difference]: Start difference. First operand 111 states and 127 transitions. Second operand 8 states. [2020-09-04 12:40:33,287 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 12:40:33,644 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 12:40:33,941 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 12:40:34,239 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 12:40:35,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 12:40:35,402 INFO L93 Difference]: Finished difference Result 223 states and 270 transitions. [2020-09-04 12:40:35,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-04 12:40:35,403 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-09-04 12:40:35,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 12:40:35,406 INFO L225 Difference]: With dead ends: 223 [2020-09-04 12:40:35,406 INFO L226 Difference]: Without dead ends: 136 [2020-09-04 12:40:35,407 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-04 12:40:35,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-09-04 12:40:35,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 111. [2020-09-04 12:40:35,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-09-04 12:40:35,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 126 transitions. [2020-09-04 12:40:35,437 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 126 transitions. Word has length 51 [2020-09-04 12:40:35,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 12:40:35,437 INFO L479 AbstractCegarLoop]: Abstraction has 111 states and 126 transitions. [2020-09-04 12:40:35,437 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-04 12:40:35,437 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 126 transitions. [2020-09-04 12:40:35,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-09-04 12:40:35,438 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 12:40:35,439 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] [2020-09-04 12:40:35,439 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 12:40:35,439 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 12:40:35,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 12:40:35,440 INFO L82 PathProgramCache]: Analyzing trace with hash 6417079, now seen corresponding path program 1 times [2020-09-04 12:40:35,440 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 12:40:35,440 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298989116] [2020-09-04 12:40:35,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 12:40:35,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:40:35,801 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 12:40:35,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 12:40:35,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:40:35,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 12:40:35,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:40:35,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-04 12:40:35,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:40:35,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-04 12:40:35,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:40:35,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-04 12:40:35,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:40:35,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-09-04 12:40:35,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:40:35,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 12:40:35,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:40:35,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-04 12:40:35,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:40:35,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-04 12:40:35,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:40:35,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 12:40:35,905 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298989116] [2020-09-04 12:40:35,905 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 12:40:35,905 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-04 12:40:35,905 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159788310] [2020-09-04 12:40:35,906 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-04 12:40:35,906 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 12:40:35,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-04 12:40:35,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-04 12:40:35,907 INFO L87 Difference]: Start difference. First operand 111 states and 126 transitions. Second operand 6 states. [2020-09-04 12:40:36,273 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 12:40:37,590 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 12:40:38,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 12:40:38,062 INFO L93 Difference]: Finished difference Result 306 states and 374 transitions. [2020-09-04 12:40:38,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-04 12:40:38,063 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 59 [2020-09-04 12:40:38,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 12:40:38,068 INFO L225 Difference]: With dead ends: 306 [2020-09-04 12:40:38,068 INFO L226 Difference]: Without dead ends: 219 [2020-09-04 12:40:38,070 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-09-04 12:40:38,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2020-09-04 12:40:38,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 178. [2020-09-04 12:40:38,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-09-04 12:40:38,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 203 transitions. [2020-09-04 12:40:38,111 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 203 transitions. Word has length 59 [2020-09-04 12:40:38,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 12:40:38,112 INFO L479 AbstractCegarLoop]: Abstraction has 178 states and 203 transitions. [2020-09-04 12:40:38,112 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-04 12:40:38,112 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 203 transitions. [2020-09-04 12:40:38,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-09-04 12:40:38,113 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 12:40:38,114 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 12:40:38,114 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-04 12:40:38,114 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 12:40:38,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 12:40:38,114 INFO L82 PathProgramCache]: Analyzing trace with hash 1711068188, now seen corresponding path program 1 times [2020-09-04 12:40:38,115 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 12:40:38,115 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527862988] [2020-09-04 12:40:38,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 12:40:38,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:40:38,458 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 12:40:38,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 12:40:38,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:40:38,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 12:40:38,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:40:38,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-04 12:40:38,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:40:38,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-04 12:40:38,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:40:38,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-04 12:40:38,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:40:38,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-09-04 12:40:38,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:40:38,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 12:40:38,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:40:38,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 12:40:38,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:40:38,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 12:40:38,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:40:38,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-09-04 12:40:38,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:40:38,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-09-04 12:40:38,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:40:38,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 12:40:38,601 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527862988] [2020-09-04 12:40:38,622 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 12:40:38,622 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-04 12:40:38,622 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772242329] [2020-09-04 12:40:38,624 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-04 12:40:38,625 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 12:40:38,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-04 12:40:38,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-09-04 12:40:38,625 INFO L87 Difference]: Start difference. First operand 178 states and 203 transitions. Second operand 10 states. [2020-09-04 12:40:39,143 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 12:40:39,380 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 12:40:39,674 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 12:40:40,375 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 12:40:40,722 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 12:40:41,029 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 12:40:42,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 12:40:42,012 INFO L93 Difference]: Finished difference Result 374 states and 456 transitions. [2020-09-04 12:40:42,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-04 12:40:42,013 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 73 [2020-09-04 12:40:42,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 12:40:42,015 INFO L225 Difference]: With dead ends: 374 [2020-09-04 12:40:42,016 INFO L226 Difference]: Without dead ends: 220 [2020-09-04 12:40:42,017 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2020-09-04 12:40:42,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2020-09-04 12:40:42,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 182. [2020-09-04 12:40:42,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2020-09-04 12:40:42,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 207 transitions. [2020-09-04 12:40:42,052 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 207 transitions. Word has length 73 [2020-09-04 12:40:42,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 12:40:42,052 INFO L479 AbstractCegarLoop]: Abstraction has 182 states and 207 transitions. [2020-09-04 12:40:42,052 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-04 12:40:42,052 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 207 transitions. [2020-09-04 12:40:42,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-09-04 12:40:42,054 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 12:40:42,054 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 12:40:42,054 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-04 12:40:42,054 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 12:40:42,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 12:40:42,055 INFO L82 PathProgramCache]: Analyzing trace with hash -212159846, now seen corresponding path program 1 times [2020-09-04 12:40:42,055 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 12:40:42,055 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882020098] [2020-09-04 12:40:42,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 12:40:42,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:40:42,508 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 12:40:42,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 12:40:42,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:40:42,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 12:40:42,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:40:42,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-04 12:40:42,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:40:42,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-04 12:40:42,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:40:42,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-04 12:40:42,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:40:42,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-09-04 12:40:42,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:40:42,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 12:40:42,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:40:42,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 12:40:42,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:40:42,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 12:40:42,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:40:42,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-09-04 12:40:42,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:40:42,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-09-04 12:40:42,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:40:42,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 12:40:42,659 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882020098] [2020-09-04 12:40:42,660 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 12:40:42,660 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-09-04 12:40:42,660 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633244529] [2020-09-04 12:40:42,661 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-04 12:40:42,661 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 12:40:42,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-04 12:40:42,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-09-04 12:40:42,662 INFO L87 Difference]: Start difference. First operand 182 states and 207 transitions. Second operand 12 states. [2020-09-04 12:40:43,133 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 12:40:43,531 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 12:40:43,848 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 12:40:44,169 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 12:40:44,825 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 12:40:45,778 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 12:40:46,145 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 12:40:46,504 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 12:40:46,817 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 12:40:47,220 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 12:40:47,590 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 12:40:48,944 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 12:40:49,299 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 12:40:50,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 12:40:50,002 INFO L93 Difference]: Finished difference Result 644 states and 828 transitions. [2020-09-04 12:40:50,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-04 12:40:50,003 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 73 [2020-09-04 12:40:50,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 12:40:50,008 INFO L225 Difference]: With dead ends: 644 [2020-09-04 12:40:50,008 INFO L226 Difference]: Without dead ends: 486 [2020-09-04 12:40:50,009 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2020-09-04 12:40:50,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 486 states. [2020-09-04 12:40:50,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 486 to 428. [2020-09-04 12:40:50,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 428 states. [2020-09-04 12:40:50,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 499 transitions. [2020-09-04 12:40:50,093 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 499 transitions. Word has length 73 [2020-09-04 12:40:50,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 12:40:50,094 INFO L479 AbstractCegarLoop]: Abstraction has 428 states and 499 transitions. [2020-09-04 12:40:50,094 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-04 12:40:50,094 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 499 transitions. [2020-09-04 12:40:50,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-09-04 12:40:50,098 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 12:40:50,098 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 12:40:50,099 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-04 12:40:50,099 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 12:40:50,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 12:40:50,099 INFO L82 PathProgramCache]: Analyzing trace with hash -1943233311, now seen corresponding path program 1 times [2020-09-04 12:40:50,099 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 12:40:50,100 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665710085] [2020-09-04 12:40:50,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 12:40:50,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:40:50,497 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 12:40:50,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 12:40:50,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:40:50,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 12:40:50,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:40:50,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-04 12:40:50,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:40:50,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-04 12:40:50,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:40:50,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-04 12:40:50,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:40:50,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-04 12:40:50,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:40:50,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-04 12:40:50,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:40:50,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 12:40:50,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:40:50,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 12:40:50,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:40:50,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 12:40:50,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:40:50,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 12:40:50,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:40:50,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 12:40:50,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:40:50,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 12:40:50,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:40:50,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-04 12:40:50,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:40:50,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-04 12:40:50,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:40:50,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 12:40:50,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:40:50,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-09-04 12:40:50,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:40:50,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-09-04 12:40:50,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:40:50,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-09-04 12:40:50,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:40:50,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 12:40:50,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:40:50,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-09-04 12:40:50,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:40:50,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-04 12:40:50,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:40:50,771 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 17 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-04 12:40:50,772 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665710085] [2020-09-04 12:40:50,772 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1239287440] [2020-09-04 12:40:50,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-04 12:40:50,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:40:50,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 828 conjuncts, 13 conjunts are in the unsatisfiable core [2020-09-04 12:40:50,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-04 12:40:51,229 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 12:40:51,229 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-09-04 12:40:51,230 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [13] total 17 [2020-09-04 12:40:51,230 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128982268] [2020-09-04 12:40:51,231 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-04 12:40:51,232 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 12:40:51,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-04 12:40:51,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2020-09-04 12:40:51,234 INFO L87 Difference]: Start difference. First operand 428 states and 499 transitions. Second operand 8 states. [2020-09-04 12:40:52,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 12:40:52,549 INFO L93 Difference]: Finished difference Result 1012 states and 1304 transitions. [2020-09-04 12:40:52,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-04 12:40:52,549 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 132 [2020-09-04 12:40:52,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 12:40:52,558 INFO L225 Difference]: With dead ends: 1012 [2020-09-04 12:40:52,558 INFO L226 Difference]: Without dead ends: 718 [2020-09-04 12:40:52,563 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 175 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=71, Invalid=349, Unknown=0, NotChecked=0, Total=420 [2020-09-04 12:40:52,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 718 states. [2020-09-04 12:40:52,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 718 to 646. [2020-09-04 12:40:52,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 646 states. [2020-09-04 12:40:52,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 646 states to 646 states and 783 transitions. [2020-09-04 12:40:52,768 INFO L78 Accepts]: Start accepts. Automaton has 646 states and 783 transitions. Word has length 132 [2020-09-04 12:40:52,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 12:40:52,769 INFO L479 AbstractCegarLoop]: Abstraction has 646 states and 783 transitions. [2020-09-04 12:40:52,769 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-04 12:40:52,769 INFO L276 IsEmpty]: Start isEmpty. Operand 646 states and 783 transitions. [2020-09-04 12:40:52,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-09-04 12:40:52,772 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 12:40:52,772 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 12:40:52,986 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-09-04 12:40:52,987 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 12:40:52,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 12:40:52,987 INFO L82 PathProgramCache]: Analyzing trace with hash -2062227357, now seen corresponding path program 1 times [2020-09-04 12:40:52,988 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 12:40:52,988 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521544454] [2020-09-04 12:40:52,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 12:40:53,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:40:53,284 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 12:40:53,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 12:40:53,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:40:53,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 12:40:53,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:40:53,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-04 12:40:53,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:40:53,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-04 12:40:53,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:40:53,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-04 12:40:53,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:40:53,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-09-04 12:40:53,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:40:53,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 12:40:53,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:40:53,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 12:40:53,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:40:53,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 12:40:53,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:40:53,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 12:40:53,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:40:53,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 12:40:53,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:40:53,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 12:40:53,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:40:53,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-04 12:40:53,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:40:53,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-04 12:40:53,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:40:53,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 12:40:53,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:40:53,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-09-04 12:40:53,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:40:53,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-04 12:40:53,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:40:53,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 12:40:53,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:40:53,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-04 12:40:53,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:40:53,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-09-04 12:40:53,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:40:53,473 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-04 12:40:53,473 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521544454] [2020-09-04 12:40:53,473 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1490514170] [2020-09-04 12:40:53,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-04 12:40:53,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:40:53,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 812 conjuncts, 11 conjunts are in the unsatisfiable core [2020-09-04 12:40:53,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-04 12:40:53,716 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-04 12:40:53,716 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-09-04 12:40:53,716 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 10 [2020-09-04 12:40:53,717 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218035795] [2020-09-04 12:40:53,717 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-04 12:40:53,717 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 12:40:53,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-04 12:40:53,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-09-04 12:40:53,718 INFO L87 Difference]: Start difference. First operand 646 states and 783 transitions. Second operand 6 states. [2020-09-04 12:40:53,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 12:40:53,875 INFO L93 Difference]: Finished difference Result 1120 states and 1406 transitions. [2020-09-04 12:40:53,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-04 12:40:53,876 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 124 [2020-09-04 12:40:53,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 12:40:53,879 INFO L225 Difference]: With dead ends: 1120 [2020-09-04 12:40:53,879 INFO L226 Difference]: Without dead ends: 498 [2020-09-04 12:40:53,882 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 161 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-09-04 12:40:53,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 498 states. [2020-09-04 12:40:53,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 498 to 496. [2020-09-04 12:40:53,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 496 states. [2020-09-04 12:40:53,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 496 states to 496 states and 599 transitions. [2020-09-04 12:40:53,990 INFO L78 Accepts]: Start accepts. Automaton has 496 states and 599 transitions. Word has length 124 [2020-09-04 12:40:53,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 12:40:53,991 INFO L479 AbstractCegarLoop]: Abstraction has 496 states and 599 transitions. [2020-09-04 12:40:53,991 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-04 12:40:53,991 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 599 transitions. [2020-09-04 12:40:53,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-09-04 12:40:53,996 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 12:40:53,996 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 12:40:54,210 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-04 12:40:54,211 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 12:40:54,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 12:40:54,212 INFO L82 PathProgramCache]: Analyzing trace with hash 1980525114, now seen corresponding path program 1 times [2020-09-04 12:40:54,212 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 12:40:54,213 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317479542] [2020-09-04 12:40:54,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 12:40:54,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:40:54,599 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 12:40:54,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 12:40:54,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:40:54,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 12:40:54,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:40:54,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-04 12:40:54,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:40:54,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-04 12:40:54,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:40:54,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-04 12:40:54,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:40:54,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-04 12:40:54,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:40:54,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-04 12:40:54,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:40:54,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 12:40:54,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:40:54,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 12:40:54,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:40:54,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 12:40:54,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:40:54,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 12:40:54,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:40:54,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 12:40:54,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:40:54,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 12:40:54,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:40:54,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-04 12:40:54,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:40:54,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-04 12:40:54,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:40:54,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 12:40:54,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:40:54,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 12:40:54,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:40:54,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-04 12:40:54,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:40:54,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 12:40:54,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:40:54,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-09-04 12:40:54,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:40:54,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-09-04 12:40:54,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:40:54,895 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 17 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-04 12:40:54,896 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317479542] [2020-09-04 12:40:54,896 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1686010599] [2020-09-04 12:40:54,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-04 12:40:55,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:40:55,156 INFO L263 TraceCheckSpWp]: Trace formula consists of 822 conjuncts, 11 conjunts are in the unsatisfiable core [2020-09-04 12:40:55,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-04 12:40:55,290 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 14 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 12:40:55,291 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-04 12:40:55,291 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 14 [2020-09-04 12:40:55,292 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864798115] [2020-09-04 12:40:55,293 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-04 12:40:55,293 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 12:40:55,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-04 12:40:55,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2020-09-04 12:40:55,294 INFO L87 Difference]: Start difference. First operand 496 states and 599 transitions. Second operand 14 states. [2020-09-04 12:40:55,980 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 12:40:56,652 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 12:40:57,822 WARN L193 SmtUtils]: Spent 602.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 188 [2020-09-04 12:40:58,172 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 12:40:58,515 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 12:40:59,113 WARN L193 SmtUtils]: Spent 569.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 188 [2020-09-04 12:40:59,477 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 12:40:59,818 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 12:41:00,891 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 12:41:01,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 12:41:01,984 INFO L93 Difference]: Finished difference Result 1003 states and 1279 transitions. [2020-09-04 12:41:01,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-09-04 12:41:01,985 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 128 [2020-09-04 12:41:01,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 12:41:01,990 INFO L225 Difference]: With dead ends: 1003 [2020-09-04 12:41:01,990 INFO L226 Difference]: Without dead ends: 581 [2020-09-04 12:41:01,993 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 174 SyntacticMatches, 4 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=301, Invalid=755, Unknown=0, NotChecked=0, Total=1056 [2020-09-04 12:41:01,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2020-09-04 12:41:02,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 484. [2020-09-04 12:41:02,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 484 states. [2020-09-04 12:41:02,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 583 transitions. [2020-09-04 12:41:02,104 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 583 transitions. Word has length 128 [2020-09-04 12:41:02,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 12:41:02,107 INFO L479 AbstractCegarLoop]: Abstraction has 484 states and 583 transitions. [2020-09-04 12:41:02,108 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-04 12:41:02,108 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 583 transitions. [2020-09-04 12:41:02,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-09-04 12:41:02,112 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 12:41:02,112 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 12:41:02,326 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-04 12:41:02,327 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 12:41:02,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 12:41:02,327 INFO L82 PathProgramCache]: Analyzing trace with hash 2141115904, now seen corresponding path program 2 times [2020-09-04 12:41:02,328 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 12:41:02,328 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70927262] [2020-09-04 12:41:02,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 12:41:02,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 12:41:02,410 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 12:41:02,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 12:41:02,510 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 12:41:02,767 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-09-04 12:41:02,768 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 12:41:02,768 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-04 12:41:03,011 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 12:41:03 BoogieIcfgContainer [2020-09-04 12:41:03,012 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 12:41:03,014 INFO L168 Benchmark]: Toolchain (without parser) took 37048.74 ms. Allocated memory was 138.4 MB in the beginning and 636.0 MB in the end (delta: 497.5 MB). Free memory was 101.1 MB in the beginning and 91.1 MB in the end (delta: 10.0 MB). Peak memory consumption was 507.6 MB. Max. memory is 7.1 GB. [2020-09-04 12:41:03,015 INFO L168 Benchmark]: CDTParser took 0.55 ms. Allocated memory is still 138.4 MB. Free memory was 119.9 MB in the beginning and 119.5 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. [2020-09-04 12:41:03,016 INFO L168 Benchmark]: CACSL2BoogieTranslator took 742.04 ms. Allocated memory was 138.4 MB in the beginning and 201.3 MB in the end (delta: 62.9 MB). Free memory was 100.7 MB in the beginning and 171.1 MB in the end (delta: -70.4 MB). Peak memory consumption was 28.5 MB. Max. memory is 7.1 GB. [2020-09-04 12:41:03,016 INFO L168 Benchmark]: Boogie Preprocessor took 98.72 ms. Allocated memory is still 201.3 MB. Free memory was 171.1 MB in the beginning and 167.0 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. [2020-09-04 12:41:03,017 INFO L168 Benchmark]: RCFGBuilder took 1255.86 ms. Allocated memory was 201.3 MB in the beginning and 231.7 MB in the end (delta: 30.4 MB). Free memory was 167.0 MB in the beginning and 198.7 MB in the end (delta: -31.7 MB). Peak memory consumption was 88.3 MB. Max. memory is 7.1 GB. [2020-09-04 12:41:03,018 INFO L168 Benchmark]: TraceAbstraction took 34946.54 ms. Allocated memory was 231.7 MB in the beginning and 636.0 MB in the end (delta: 404.2 MB). Free memory was 198.7 MB in the beginning and 91.1 MB in the end (delta: 107.6 MB). Peak memory consumption was 511.8 MB. Max. memory is 7.1 GB. [2020-09-04 12:41:03,022 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.55 ms. Allocated memory is still 138.4 MB. Free memory was 119.9 MB in the beginning and 119.5 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 742.04 ms. Allocated memory was 138.4 MB in the beginning and 201.3 MB in the end (delta: 62.9 MB). Free memory was 100.7 MB in the beginning and 171.1 MB in the end (delta: -70.4 MB). Peak memory consumption was 28.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 98.72 ms. Allocated memory is still 201.3 MB. Free memory was 171.1 MB in the beginning and 167.0 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1255.86 ms. Allocated memory was 201.3 MB in the beginning and 231.7 MB in the end (delta: 30.4 MB). Free memory was 167.0 MB in the beginning and 198.7 MB in the end (delta: -31.7 MB). Peak memory consumption was 88.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 34946.54 ms. Allocated memory was 231.7 MB in the beginning and 636.0 MB in the end (delta: 404.2 MB). Free memory was 198.7 MB in the beginning and 91.1 MB in the end (delta: 107.6 MB). Peak memory consumption was 511.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 211]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L47] int waterLevel = 1; [L48] int methaneLevelCritical = 0; [L385] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L652] int pumpRunning = 0; [L653] int systemActive = 1; [L822] int cleanupTimeShifts = 4; VAL [\old(cleanupTimeShifts)=175, \old(head)=167, \old(head)=176, \old(methaneLevelCritical)=142, \old(pumpRunning)=132, \old(systemActive)=131, \old(waterLevel)=138, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L895] int retValue_acc ; [L896] 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] [L900] 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] [L901] 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] [L902] 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] [L198] int retValue_acc ; [L201] retValue_acc = 1 [L202] 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] [L902] 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] [L902] tmp = valid_product() [L904] 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] [L906] 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] [L907] 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] [L889] 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] [L585] int splverifierCounter ; [L586] int tmp ; [L587] int tmp___0 ; [L588] int tmp___1 ; [L589] int tmp___2 ; [L592] 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] [L594] 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] [L596] 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] [L602] tmp = __VERIFIER_nondet_int() [L604] 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] [L606] 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] [L65] COND TRUE waterLevel < 2 [L66] 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] [L606] 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] [L612] tmp___0 = __VERIFIER_nondet_int() [L614] 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] [L622] tmp___2 = __VERIFIER_nondet_int() [L624] 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] [L637] 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] [L659] 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] [L666] 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] [L668] 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] [L688] 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] [L691] COND TRUE ! pumpRunning VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L693] CALL, EXPR isHighWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L803] int retValue_acc ; [L804] int tmp ; [L805] int tmp___0 ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L809] CALL, EXPR isHighWaterSensorDry() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L127] int retValue_acc ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L130] COND FALSE !(waterLevel < 2) [L134] retValue_acc = 0 [L135] 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] [L809] RET, EXPR isHighWaterSensorDry() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isHighWaterSensorDry()=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L809] tmp = isHighWaterSensorDry() [L811] COND FALSE !(\read(tmp)) [L814] tmp___0 = 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=1, waterLevel=2] [L816] retValue_acc = tmp___0 [L817] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=1, systemActive=1, tmp=0, tmp___0=1, waterLevel=2] [L693] RET, EXPR isHighWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isHighWaterLevel()=1, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L693] tmp = isHighWaterLevel() [L695] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=1, waterLevel=2] [L697] CALL activatePump() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L722] 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] [L726] CALL, EXPR isMethaneAlarm() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L747] int retValue_acc ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L751] 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] [L86] int retValue_acc ; [L89] retValue_acc = methaneLevelCritical [L90] 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] [L751] 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] [L751] retValue_acc = isMethaneLevelCritical() [L753] 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] [L726] RET, EXPR isMethaneAlarm() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneAlarm()=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L726] tmp = isMethaneAlarm() [L728] 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] [L732] CALL activatePump__wrappee__highWaterSensor() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L716] pumpRunning = 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L732] RET activatePump__wrappee__highWaterSensor() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=0, waterLevel=2] [L697] RET activatePump() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=1, waterLevel=2] [L668] RET processEnvironment() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L674] CALL __utac_acc__Specification4_spec__1() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L144] int tmp ; [L145] int tmp___0 ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L149] CALL, EXPR getWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L118] int retValue_acc ; [L121] retValue_acc = waterLevel [L122] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, \result=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, retValue_acc=2, systemActive=1, waterLevel=2] [L149] RET, EXPR getWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, getWaterLevel()=2, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L149] tmp = getWaterLevel() [L151] COND FALSE !(tmp == 0) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=2, waterLevel=2] [L674] RET __utac_acc__Specification4_spec__1() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L637] RET timeShift() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, tmp___2=1, waterLevel=2] [L594] COND TRUE 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, tmp___2=1, waterLevel=2] [L596] COND TRUE splverifierCounter < 4 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, tmp___2=1, waterLevel=2] [L602] tmp = __VERIFIER_nondet_int() [L604] COND FALSE !(\read(tmp)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=1, waterLevel=2] [L612] tmp___0 = __VERIFIER_nondet_int() [L614] COND FALSE !(\read(tmp___0)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=1, waterLevel=2] [L622] tmp___2 = __VERIFIER_nondet_int() [L624] COND TRUE \read(tmp___2) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=1, waterLevel=2] [L637] CALL timeShift() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L659] COND TRUE \read(pumpRunning) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L661] CALL lowerWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L53] COND TRUE waterLevel > 0 [L54] waterLevel = waterLevel - 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L661] RET lowerWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L666] COND TRUE \read(systemActive) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L668] CALL processEnvironment() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L688] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L691] COND FALSE !(! pumpRunning) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L706] FCALL processEnvironment__wrappee__base() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L668] RET processEnvironment() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L674] CALL __utac_acc__Specification4_spec__1() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L144] int tmp ; [L145] int tmp___0 ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L149] CALL, EXPR getWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L118] int retValue_acc ; [L121] retValue_acc = waterLevel [L122] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=1] [L149] RET, EXPR getWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, getWaterLevel()=1, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L149] tmp = getWaterLevel() [L151] COND FALSE !(tmp == 0) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=1, waterLevel=1] [L674] RET __utac_acc__Specification4_spec__1() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L637] RET timeShift() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=1, waterLevel=1] [L594] COND TRUE 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=1, waterLevel=1] [L596] COND TRUE splverifierCounter < 4 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=1, waterLevel=1] [L602] tmp = __VERIFIER_nondet_int() [L604] COND FALSE !(\read(tmp)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=1, waterLevel=1] [L612] tmp___0 = __VERIFIER_nondet_int() [L614] COND FALSE !(\read(tmp___0)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=1, waterLevel=1] [L622] tmp___2 = __VERIFIER_nondet_int() [L624] COND TRUE \read(tmp___2) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=1, waterLevel=1] [L637] CALL timeShift() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L659] COND TRUE \read(pumpRunning) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L661] CALL lowerWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L53] COND TRUE waterLevel > 0 [L54] waterLevel = waterLevel - 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L661] RET lowerWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L666] COND TRUE \read(systemActive) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L668] CALL processEnvironment() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L688] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L691] COND FALSE !(! pumpRunning) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L706] FCALL processEnvironment__wrappee__base() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L668] RET processEnvironment() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L674] CALL __utac_acc__Specification4_spec__1() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L144] int tmp ; [L145] int tmp___0 ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L149] CALL, EXPR getWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L118] int retValue_acc ; [L121] retValue_acc = waterLevel [L122] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=1, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, retValue_acc=0, systemActive=1, waterLevel=0] [L149] RET, EXPR getWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, getWaterLevel()=0, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L149] tmp = getWaterLevel() [L151] COND TRUE tmp == 0 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=0, waterLevel=0] [L153] CALL, EXPR isPumpRunning() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L758] int retValue_acc ; [L761] retValue_acc = pumpRunning [L762] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=1, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=0] [L153] RET, EXPR isPumpRunning() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, isPumpRunning()=1, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=0, waterLevel=0] [L153] tmp___0 = isPumpRunning() [L155] COND TRUE \read(tmp___0) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=0, tmp___0=1, waterLevel=0] [L157] CALL __automaton_fail() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L211] __VERIFIER_error() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 38 procedures, 222 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 34.6s, OverallIterations: 10, TraceHistogramMax: 3, AutomataDifference: 26.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1087 SDtfs, 2092 SDslu, 1534 SDs, 0 SdLazy, 5169 SolverSat, 1280 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 11.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 754 GetRequests, 626 SyntacticMatches, 8 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 444 ImplicationChecksByTransitivity, 14.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=646occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 9 MinimizatonAttempts, 390 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 5.0s InterpolantComputationTime, 1280 NumberOfCodeBlocks, 1280 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 1105 ConstructedInterpolants, 0 QuantifiedInterpolants, 340585 SizeOfPredicates, 10 NumberOfNonLiveVariables, 2462 ConjunctsInSsa, 35 ConjunctsInUnsatCore, 12 InterpolantComputations, 8 PerfectInterpolantSequences, 132/152 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...