/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/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product63.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 15:26:02,206 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 15:26:02,211 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 15:26:02,253 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 15:26:02,253 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 15:26:02,264 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 15:26:02,267 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 15:26:02,270 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 15:26:02,274 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 15:26:02,278 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 15:26:02,279 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 15:26:02,281 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 15:26:02,282 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 15:26:02,285 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 15:26:02,289 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 15:26:02,291 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 15:26:02,293 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 15:26:02,295 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 15:26:02,297 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 15:26:02,305 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 15:26:02,308 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 15:26:02,309 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 15:26:02,311 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 15:26:02,311 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 15:26:02,315 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-04 15:26:02,315 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-04 15:26:02,315 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-04 15:26:02,318 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-04 15:26:02,319 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-04 15:26:02,321 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-04 15:26:02,321 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-04 15:26:02,322 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-04 15:26:02,323 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-04 15:26:02,324 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-04 15:26:02,326 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-04 15:26:02,326 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-04 15:26:02,327 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-04 15:26:02,327 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-04 15:26:02,327 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 15:26:02,328 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 15:26:02,330 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 15:26:02,331 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-09-04 15:26:02,348 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 15:26:02,349 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 15:26:02,351 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 15:26:02,352 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 15:26:02,352 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 15:26:02,352 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 15:26:02,353 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 15:26:02,353 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 15:26:02,353 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 15:26:02,353 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 15:26:02,354 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 15:26:02,355 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 15:26:02,355 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 15:26:02,355 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 15:26:02,356 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 15:26:02,356 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 15:26:02,356 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 15:26:02,356 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 15:26:02,356 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 15:26:02,357 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 15:26:02,357 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 15:26:02,357 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 15:26:02,357 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-09-04 15:26:02,790 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 15:26:02,807 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 15:26:02,812 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 15:26:02,813 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 15:26:02,814 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 15:26:02,815 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product63.cil.c [2020-09-04 15:26:02,901 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/78e6d31f8/8d77b65497df4151995d79aba3da1948/FLAGd865f240e [2020-09-04 15:26:03,496 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 15:26:03,497 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product63.cil.c [2020-09-04 15:26:03,520 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/78e6d31f8/8d77b65497df4151995d79aba3da1948/FLAGd865f240e [2020-09-04 15:26:03,753 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/78e6d31f8/8d77b65497df4151995d79aba3da1948 [2020-09-04 15:26:03,769 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 15:26:03,774 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 15:26:03,778 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 15:26:03,778 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 15:26:03,783 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 15:26:03,784 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 03:26:03" (1/1) ... [2020-09-04 15:26:03,788 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7845d484 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:26:03, skipping insertion in model container [2020-09-04 15:26:03,789 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 03:26:03" (1/1) ... [2020-09-04 15:26:03,799 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 15:26:03,849 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 15:26:04,338 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 15:26:04,353 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 15:26:04,451 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 15:26:04,491 INFO L208 MainTranslator]: Completed translation [2020-09-04 15:26:04,492 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:26:04 WrapperNode [2020-09-04 15:26:04,492 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 15:26:04,493 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 15:26:04,493 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 15:26:04,493 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 15:26:04,507 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:26:04" (1/1) ... [2020-09-04 15:26:04,507 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:26:04" (1/1) ... [2020-09-04 15:26:04,528 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:26:04" (1/1) ... [2020-09-04 15:26:04,529 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:26:04" (1/1) ... [2020-09-04 15:26:04,575 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:26:04" (1/1) ... [2020-09-04 15:26:04,590 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:26:04" (1/1) ... [2020-09-04 15:26:04,596 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:26:04" (1/1) ... [2020-09-04 15:26:04,604 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 15:26:04,604 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 15:26:04,604 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 15:26:04,605 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 15:26:04,606 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:26:04" (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 15:26:04,690 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 15:26:04,690 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 15:26:04,690 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-04 15:26:04,690 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-04 15:26:04,691 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-04 15:26:04,691 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-04 15:26:04,691 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-04 15:26:04,691 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 15:26:04,691 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-04 15:26:04,692 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-04 15:26:04,692 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-04 15:26:04,693 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-04 15:26:04,693 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-04 15:26:04,693 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-04 15:26:04,693 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-09-04 15:26:04,694 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-09-04 15:26:04,694 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-04 15:26:04,694 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2020-09-04 15:26:04,695 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-04 15:26:04,695 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-04 15:26:04,696 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-04 15:26:04,696 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-04 15:26:04,698 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-04 15:26:04,699 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-09-04 15:26:04,699 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-09-04 15:26:04,699 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-09-04 15:26:04,699 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-04 15:26:04,699 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-04 15:26:04,700 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-04 15:26:04,700 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-04 15:26:04,700 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-04 15:26:04,700 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-04 15:26:04,700 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-04 15:26:04,700 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-09-04 15:26:04,700 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-09-04 15:26:04,701 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-04 15:26:04,701 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-09-04 15:26:04,701 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-04 15:26:04,701 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-04 15:26:04,701 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-04 15:26:04,701 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-04 15:26:04,702 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-04 15:26:04,702 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-04 15:26:04,702 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 15:26:04,702 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 15:26:04,702 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-04 15:26:04,702 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-04 15:26:04,703 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-04 15:26:04,703 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-04 15:26:04,703 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-04 15:26:04,703 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-04 15:26:04,703 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-04 15:26:04,703 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-04 15:26:04,703 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-04 15:26:04,704 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-04 15:26:04,704 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-04 15:26:04,704 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-04 15:26:04,704 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-04 15:26:04,705 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 15:26:04,705 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-04 15:26:04,705 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-04 15:26:04,705 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-04 15:26:04,705 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-04 15:26:04,705 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-09-04 15:26:04,705 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-09-04 15:26:04,706 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-04 15:26:04,706 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-04 15:26:04,706 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-04 15:26:04,706 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-09-04 15:26:04,706 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-09-04 15:26:04,706 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-04 15:26:04,707 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-04 15:26:04,707 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-09-04 15:26:04,707 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-09-04 15:26:04,707 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-09-04 15:26:04,707 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-09-04 15:26:04,707 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-04 15:26:04,708 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2020-09-04 15:26:04,708 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-04 15:26:04,708 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-04 15:26:04,709 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-04 15:26:04,709 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-04 15:26:04,710 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-04 15:26:04,710 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-04 15:26:04,710 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-04 15:26:04,711 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-04 15:26:04,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-04 15:26:04,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-04 15:26:04,712 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-04 15:26:04,712 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-04 15:26:04,712 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 15:26:04,712 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-04 15:26:04,712 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-04 15:26:04,712 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-04 15:26:04,712 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-04 15:26:04,713 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-04 15:26:04,713 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-04 15:26:04,713 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 15:26:04,713 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-04 15:26:04,714 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 15:26:05,872 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 15:26:05,872 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-04 15:26:05,880 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 03:26:05 BoogieIcfgContainer [2020-09-04 15:26:05,880 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 15:26:05,881 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 15:26:05,881 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 15:26:05,885 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 15:26:05,885 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 03:26:03" (1/3) ... [2020-09-04 15:26:05,886 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e852251 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 03:26:05, skipping insertion in model container [2020-09-04 15:26:05,887 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:26:04" (2/3) ... [2020-09-04 15:26:05,887 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e852251 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 03:26:05, skipping insertion in model container [2020-09-04 15:26:05,887 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 03:26:05" (3/3) ... [2020-09-04 15:26:05,890 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product63.cil.c [2020-09-04 15:26:05,902 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 15:26:05,914 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 15:26:05,935 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 15:26:05,961 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 15:26:05,961 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 15:26:05,961 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-09-04 15:26:05,962 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 15:26:05,962 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 15:26:05,962 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 15:26:05,962 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 15:26:05,962 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 15:26:05,985 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states. [2020-09-04 15:26:06,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-09-04 15:26:06,011 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:26:06,013 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 15:26:06,014 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:26:06,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:26:06,020 INFO L82 PathProgramCache]: Analyzing trace with hash -1710422987, now seen corresponding path program 1 times [2020-09-04 15:26:06,033 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:26:06,034 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1957635790] [2020-09-04 15:26:06,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:26:06,113 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:26:06,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:26:06,835 WARN L193 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:26:06,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:26:06,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:26:06,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:26:06,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:26:06,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:26:06,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:26:06,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:26:06,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:26:06,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:26:06,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:26:06,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-09-04 15:26:06,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:26:06,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-09-04 15:26:06,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:26:06,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-09-04 15:26:06,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:26:07,019 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 15:26:07,022 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1957635790] [2020-09-04 15:26:07,024 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:26:07,025 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 15:26:07,025 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949464002] [2020-09-04 15:26:07,033 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 15:26:07,033 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:26:07,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 15:26:07,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 15:26:07,054 INFO L87 Difference]: Start difference. First operand 358 states. Second operand 3 states. [2020-09-04 15:26:08,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:26:08,864 INFO L93 Difference]: Finished difference Result 587 states and 700 transitions. [2020-09-04 15:26:08,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 15:26:08,866 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 153 [2020-09-04 15:26:08,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:26:08,887 INFO L225 Difference]: With dead ends: 587 [2020-09-04 15:26:08,888 INFO L226 Difference]: Without dead ends: 354 [2020-09-04 15:26:08,894 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 15:26:08,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2020-09-04 15:26:09,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 307. [2020-09-04 15:26:09,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 307 states. [2020-09-04 15:26:09,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 339 transitions. [2020-09-04 15:26:09,065 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 339 transitions. Word has length 153 [2020-09-04 15:26:09,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:26:09,066 INFO L479 AbstractCegarLoop]: Abstraction has 307 states and 339 transitions. [2020-09-04 15:26:09,066 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 15:26:09,066 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 339 transitions. [2020-09-04 15:26:09,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-09-04 15:26:09,072 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:26:09,072 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 15:26:09,072 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 15:26:09,073 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:26:09,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:26:09,073 INFO L82 PathProgramCache]: Analyzing trace with hash -1065336794, now seen corresponding path program 1 times [2020-09-04 15:26:09,073 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:26:09,074 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [959843095] [2020-09-04 15:26:09,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:26:09,077 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:26:09,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:26:09,514 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:26:09,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:26:09,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:26:09,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:26:09,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:26:09,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:26:09,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:26:09,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:26:09,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:26:09,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:26:09,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:26:09,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-09-04 15:26:09,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:26:09,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-09-04 15:26:09,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:26:09,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-09-04 15:26:09,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:26:09,615 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 15:26:09,615 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [959843095] [2020-09-04 15:26:09,615 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:26:09,616 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 15:26:09,616 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311436602] [2020-09-04 15:26:09,617 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 15:26:09,618 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:26:09,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 15:26:09,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 15:26:09,618 INFO L87 Difference]: Start difference. First operand 307 states and 339 transitions. Second operand 4 states. [2020-09-04 15:26:10,229 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:26:11,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:26:11,689 INFO L93 Difference]: Finished difference Result 498 states and 567 transitions. [2020-09-04 15:26:11,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-04 15:26:11,690 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 154 [2020-09-04 15:26:11,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:26:11,696 INFO L225 Difference]: With dead ends: 498 [2020-09-04 15:26:11,696 INFO L226 Difference]: Without dead ends: 337 [2020-09-04 15:26:11,699 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-04 15:26:11,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2020-09-04 15:26:11,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 297. [2020-09-04 15:26:11,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 297 states. [2020-09-04 15:26:11,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 326 transitions. [2020-09-04 15:26:11,793 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 326 transitions. Word has length 154 [2020-09-04 15:26:11,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:26:11,794 INFO L479 AbstractCegarLoop]: Abstraction has 297 states and 326 transitions. [2020-09-04 15:26:11,794 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 15:26:11,794 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 326 transitions. [2020-09-04 15:26:11,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-09-04 15:26:11,797 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:26:11,797 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 15:26:11,798 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 15:26:11,798 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:26:11,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:26:11,798 INFO L82 PathProgramCache]: Analyzing trace with hash -2091062943, now seen corresponding path program 1 times [2020-09-04 15:26:11,799 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:26:11,799 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1376340227] [2020-09-04 15:26:11,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:26:11,802 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:26:11,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:26:12,161 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:26:12,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:26:12,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:26:12,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:26:12,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:26:12,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:26:12,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:26:12,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:26:12,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:26:12,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:26:12,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:26:12,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-09-04 15:26:12,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:26:12,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-09-04 15:26:12,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:26:12,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-09-04 15:26:12,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:26:12,325 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 15:26:12,326 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1376340227] [2020-09-04 15:26:12,326 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:26:12,327 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-04 15:26:12,327 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941725039] [2020-09-04 15:26:12,327 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-04 15:26:12,328 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:26:12,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-04 15:26:12,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-04 15:26:12,328 INFO L87 Difference]: Start difference. First operand 297 states and 326 transitions. Second operand 9 states. [2020-09-04 15:26:12,875 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:26:13,255 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:26:13,557 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-04 15:26:13,860 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:26:14,179 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:26:14,463 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:26:15,514 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:26:18,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:26:18,827 INFO L93 Difference]: Finished difference Result 821 states and 951 transitions. [2020-09-04 15:26:18,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-04 15:26:18,827 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 163 [2020-09-04 15:26:18,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:26:18,835 INFO L225 Difference]: With dead ends: 821 [2020-09-04 15:26:18,835 INFO L226 Difference]: Without dead ends: 634 [2020-09-04 15:26:18,838 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2020-09-04 15:26:18,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2020-09-04 15:26:19,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 559. [2020-09-04 15:26:19,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 559 states. [2020-09-04 15:26:19,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 632 transitions. [2020-09-04 15:26:19,116 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 632 transitions. Word has length 163 [2020-09-04 15:26:19,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:26:19,117 INFO L479 AbstractCegarLoop]: Abstraction has 559 states and 632 transitions. [2020-09-04 15:26:19,117 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-04 15:26:19,117 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 632 transitions. [2020-09-04 15:26:19,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-09-04 15:26:19,120 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:26:19,121 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 15:26:19,121 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 15:26:19,121 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:26:19,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:26:19,122 INFO L82 PathProgramCache]: Analyzing trace with hash 1074637363, now seen corresponding path program 1 times [2020-09-04 15:26:19,122 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:26:19,122 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [494740317] [2020-09-04 15:26:19,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:26:19,125 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:26:19,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:26:19,522 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:26:19,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:26:19,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:26:19,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:26:19,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:26:19,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:26:19,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:26:19,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:26:19,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:26:19,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:26:19,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:26:19,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-09-04 15:26:19,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:26:19,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-09-04 15:26:19,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:26:19,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-09-04 15:26:19,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:26:19,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-09-04 15:26:19,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:26:19,688 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 15:26:19,688 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [494740317] [2020-09-04 15:26:19,689 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:26:19,689 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-04 15:26:19,689 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721773400] [2020-09-04 15:26:19,690 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-04 15:26:19,690 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:26:19,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-04 15:26:19,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-04 15:26:19,691 INFO L87 Difference]: Start difference. First operand 559 states and 632 transitions. Second operand 9 states. [2020-09-04 15:26:20,250 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:26:22,717 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:26:23,069 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:26:23,455 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:26:23,834 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:26:24,138 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:26:24,446 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:26:24,760 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:26:26,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:26:26,173 INFO L93 Difference]: Finished difference Result 1552 states and 1873 transitions. [2020-09-04 15:26:26,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-04 15:26:26,174 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 172 [2020-09-04 15:26:26,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:26:26,181 INFO L225 Difference]: With dead ends: 1552 [2020-09-04 15:26:26,182 INFO L226 Difference]: Without dead ends: 1103 [2020-09-04 15:26:26,184 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-09-04 15:26:26,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1103 states. [2020-09-04 15:26:26,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1103 to 995. [2020-09-04 15:26:26,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 995 states. [2020-09-04 15:26:26,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 995 states to 995 states and 1151 transitions. [2020-09-04 15:26:26,562 INFO L78 Accepts]: Start accepts. Automaton has 995 states and 1151 transitions. Word has length 172 [2020-09-04 15:26:26,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:26:26,563 INFO L479 AbstractCegarLoop]: Abstraction has 995 states and 1151 transitions. [2020-09-04 15:26:26,563 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-04 15:26:26,563 INFO L276 IsEmpty]: Start isEmpty. Operand 995 states and 1151 transitions. [2020-09-04 15:26:26,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-09-04 15:26:26,568 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:26:26,569 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 15:26:26,569 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-04 15:26:26,569 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:26:26,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:26:26,570 INFO L82 PathProgramCache]: Analyzing trace with hash 1555840203, now seen corresponding path program 1 times [2020-09-04 15:26:26,570 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:26:26,570 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1616140266] [2020-09-04 15:26:26,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:26:26,573 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:26:26,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 15:26:26,647 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 15:26:26,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 15:26:26,728 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 15:26:26,932 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-04 15:26:26,932 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 15:26:26,933 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-04 15:26:26,967 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 03:26:26 BoogieIcfgContainer [2020-09-04 15:26:26,967 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 15:26:26,970 INFO L168 Benchmark]: Toolchain (without parser) took 23196.63 ms. Allocated memory was 140.5 MB in the beginning and 605.0 MB in the end (delta: 464.5 MB). Free memory was 102.4 MB in the beginning and 349.0 MB in the end (delta: -246.6 MB). Peak memory consumption was 217.9 MB. Max. memory is 7.1 GB. [2020-09-04 15:26:26,971 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 140.5 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-04 15:26:26,972 INFO L168 Benchmark]: CACSL2BoogieTranslator took 714.54 ms. Allocated memory was 140.5 MB in the beginning and 206.0 MB in the end (delta: 65.5 MB). Free memory was 102.2 MB in the beginning and 172.1 MB in the end (delta: -69.9 MB). Peak memory consumption was 27.1 MB. Max. memory is 7.1 GB. [2020-09-04 15:26:26,973 INFO L168 Benchmark]: Boogie Preprocessor took 111.23 ms. Allocated memory is still 206.0 MB. Free memory was 172.1 MB in the beginning and 168.2 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB. [2020-09-04 15:26:26,974 INFO L168 Benchmark]: RCFGBuilder took 1275.88 ms. Allocated memory was 206.0 MB in the beginning and 235.9 MB in the end (delta: 29.9 MB). Free memory was 168.2 MB in the beginning and 166.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 79.4 MB. Max. memory is 7.1 GB. [2020-09-04 15:26:26,975 INFO L168 Benchmark]: TraceAbstraction took 21086.28 ms. Allocated memory was 235.9 MB in the beginning and 605.0 MB in the end (delta: 369.1 MB). Free memory was 166.7 MB in the beginning and 349.0 MB in the end (delta: -182.3 MB). Peak memory consumption was 186.8 MB. Max. memory is 7.1 GB. [2020-09-04 15:26:26,979 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 140.5 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 714.54 ms. Allocated memory was 140.5 MB in the beginning and 206.0 MB in the end (delta: 65.5 MB). Free memory was 102.2 MB in the beginning and 172.1 MB in the end (delta: -69.9 MB). Peak memory consumption was 27.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 111.23 ms. Allocated memory is still 206.0 MB. Free memory was 172.1 MB in the beginning and 168.2 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1275.88 ms. Allocated memory was 206.0 MB in the beginning and 235.9 MB in the end (delta: 29.9 MB). Free memory was 168.2 MB in the beginning and 166.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 79.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 21086.28 ms. Allocated memory was 235.9 MB in the beginning and 605.0 MB in the end (delta: 369.1 MB). Free memory was 166.7 MB in the beginning and 349.0 MB in the end (delta: -182.3 MB). Peak memory consumption was 186.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 619]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L40] int cleanupTimeShifts = 4; [L188] int pumpRunning = 0; [L189] int systemActive = 1; [L512] int waterLevel = 1; [L513] int methaneLevelCritical = 0; [L827] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L121] int retValue_acc ; [L122] int tmp ; [L126] FCALL select_helpers() [L127] FCALL select_features() [L128] CALL, EXPR valid_product() [L170] int retValue_acc ; [L173] retValue_acc = 1 [L174] return (retValue_acc); [L128] RET, EXPR valid_product() [L128] tmp = valid_product() [L130] COND TRUE \read(tmp) [L132] FCALL setup() [L133] CALL runTest() [L112] CALL test() [L445] int splverifierCounter ; [L446] int tmp ; [L447] int tmp___0 ; [L448] int tmp___1 ; [L449] int tmp___2 ; [L452] splverifierCounter = 0 [L454] COND TRUE 1 [L456] COND TRUE splverifierCounter < 4 [L462] tmp = __VERIFIER_nondet_int() [L464] COND TRUE \read(tmp) [L466] CALL waterRise() [L530] COND TRUE waterLevel < 2 [L531] waterLevel = waterLevel + 1 [L466] RET waterRise() [L472] tmp___0 = __VERIFIER_nondet_int() [L474] COND FALSE !(\read(tmp___0)) [L482] tmp___2 = __VERIFIER_nondet_int() [L484] COND FALSE !(\read(tmp___2)) [L488] tmp___1 = __VERIFIER_nondet_int() [L490] COND TRUE \read(tmp___1) [L492] CALL stopSystem() [L432] COND FALSE !(\read(pumpRunning)) [L439] systemActive = 0 [L492] RET stopSystem() [L499] CALL timeShift() [L196] COND FALSE !(\read(pumpRunning)) [L203] COND FALSE !(\read(systemActive)) [L211] CALL __utac_acc__Specification3_spec__1() [L625] int tmp ; [L626] int tmp___0 ; [L627] int tmp___1 ; [L631] CALL, EXPR isMethaneLevelCritical() [L551] int retValue_acc ; [L554] retValue_acc = methaneLevelCritical [L555] return (retValue_acc); [L631] RET, EXPR isMethaneLevelCritical() [L631] tmp = isMethaneLevelCritical() [L633] COND FALSE !(\read(tmp)) [L637] CALL, EXPR getWaterLevel() [L583] int retValue_acc ; [L586] retValue_acc = waterLevel [L587] return (retValue_acc); [L637] RET, EXPR getWaterLevel() [L637] tmp___0 = getWaterLevel() [L639] COND TRUE tmp___0 == 2 [L641] CALL, EXPR isPumpRunning() [L346] int retValue_acc ; [L349] retValue_acc = pumpRunning [L350] return (retValue_acc); [L641] RET, EXPR isPumpRunning() [L641] tmp___1 = isPumpRunning() [L643] COND FALSE !(\read(tmp___1)) [L647] CALL __automaton_fail() [L619] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 43 procedures, 670 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 20.9s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 16.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1171 SDtfs, 1760 SDslu, 1311 SDs, 0 SdLazy, 3882 SolverSat, 606 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 9.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 113 GetRequests, 78 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 5.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=995occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.9s AutomataMinimizationTime, 4 MinimizatonAttempts, 270 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...