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/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product03.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fea9116 [2019-09-20 13:30:37,626 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-20 13:30:37,628 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-20 13:30:37,641 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-20 13:30:37,641 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-20 13:30:37,642 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-20 13:30:37,644 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-20 13:30:37,645 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-20 13:30:37,647 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-20 13:30:37,648 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-20 13:30:37,649 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-20 13:30:37,651 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-20 13:30:37,651 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-20 13:30:37,652 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-20 13:30:37,653 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-20 13:30:37,654 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-20 13:30:37,655 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-20 13:30:37,656 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-20 13:30:37,658 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-20 13:30:37,660 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-20 13:30:37,662 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-20 13:30:37,663 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-20 13:30:37,664 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-20 13:30:37,665 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-20 13:30:37,668 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-20 13:30:37,668 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-20 13:30:37,669 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-20 13:30:37,670 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-20 13:30:37,670 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-20 13:30:37,671 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-20 13:30:37,671 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-20 13:30:37,672 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-20 13:30:37,673 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-20 13:30:37,674 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-20 13:30:37,675 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-20 13:30:37,675 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-20 13:30:37,676 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-20 13:30:37,676 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-20 13:30:37,677 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-20 13:30:37,677 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-20 13:30:37,678 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-20 13:30:37,679 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf [2019-09-20 13:30:37,694 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-20 13:30:37,695 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-20 13:30:37,695 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-20 13:30:37,695 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-20 13:30:37,696 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-20 13:30:37,696 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-20 13:30:37,696 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-20 13:30:37,697 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-20 13:30:37,697 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-20 13:30:37,697 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-20 13:30:37,698 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-20 13:30:37,698 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-20 13:30:37,698 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-20 13:30:37,698 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-20 13:30:37,699 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-20 13:30:37,699 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-20 13:30:37,699 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-20 13:30:37,699 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-20 13:30:37,699 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-20 13:30:37,700 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-20 13:30:37,700 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-20 13:30:37,700 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-20 13:30:37,700 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-20 13:30:37,701 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-20 13:30:37,701 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-20 13:30:37,701 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-20 13:30:37,701 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-20 13:30:37,701 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-20 13:30:37,702 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-20 13:30:37,702 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-20 13:30:37,730 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-20 13:30:37,743 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-20 13:30:37,747 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-20 13:30:37,748 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-20 13:30:37,749 INFO L275 PluginConnector]: CDTParser initialized [2019-09-20 13:30:37,750 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product03.cil.c [2019-09-20 13:30:37,822 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4bfde8220/7fcdc89c384f456fb0d2c194660889bc/FLAG775e28327 [2019-09-20 13:30:38,380 INFO L306 CDTParser]: Found 1 translation units. [2019-09-20 13:30:38,380 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product03.cil.c [2019-09-20 13:30:38,394 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4bfde8220/7fcdc89c384f456fb0d2c194660889bc/FLAG775e28327 [2019-09-20 13:30:38,681 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4bfde8220/7fcdc89c384f456fb0d2c194660889bc [2019-09-20 13:30:38,695 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-20 13:30:38,696 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-20 13:30:38,699 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-20 13:30:38,700 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-20 13:30:38,704 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-20 13:30:38,705 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:30:38" (1/1) ... [2019-09-20 13:30:38,709 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35ff5179 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:38, skipping insertion in model container [2019-09-20 13:30:38,709 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:30:38" (1/1) ... [2019-09-20 13:30:38,718 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-20 13:30:38,785 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-20 13:30:39,226 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:30:39,252 INFO L188 MainTranslator]: Completed pre-run [2019-09-20 13:30:39,374 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:30:39,414 INFO L192 MainTranslator]: Completed translation [2019-09-20 13:30:39,414 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:39 WrapperNode [2019-09-20 13:30:39,414 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-20 13:30:39,415 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-20 13:30:39,415 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-20 13:30:39,416 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-20 13:30:39,431 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:39" (1/1) ... [2019-09-20 13:30:39,431 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:39" (1/1) ... [2019-09-20 13:30:39,450 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:39" (1/1) ... [2019-09-20 13:30:39,451 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:39" (1/1) ... [2019-09-20 13:30:39,491 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:39" (1/1) ... [2019-09-20 13:30:39,504 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:39" (1/1) ... [2019-09-20 13:30:39,515 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:39" (1/1) ... [2019-09-20 13:30:39,522 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-20 13:30:39,522 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-20 13:30:39,523 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-20 13:30:39,523 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-20 13:30:39,524 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:39" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-20 13:30:39,579 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-20 13:30:39,579 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-20 13:30:39,580 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-09-20 13:30:39,580 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-09-20 13:30:39,580 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-09-20 13:30:39,580 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-09-20 13:30:39,580 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-09-20 13:30:39,581 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-09-20 13:30:39,582 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-09-20 13:30:39,582 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-09-20 13:30:39,582 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-09-20 13:30:39,583 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-09-20 13:30:39,583 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-09-20 13:30:39,584 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-09-20 13:30:39,584 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-09-20 13:30:39,585 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-09-20 13:30:39,585 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-09-20 13:30:39,585 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-09-20 13:30:39,586 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-09-20 13:30:39,586 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-09-20 13:30:39,586 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-09-20 13:30:39,587 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-09-20 13:30:39,587 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2019-09-20 13:30:39,587 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-09-20 13:30:39,587 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-09-20 13:30:39,588 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-09-20 13:30:39,588 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-09-20 13:30:39,588 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-09-20 13:30:39,588 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-09-20 13:30:39,588 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2019-09-20 13:30:39,589 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-09-20 13:30:39,589 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-09-20 13:30:39,589 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-09-20 13:30:39,589 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-09-20 13:30:39,589 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-20 13:30:39,589 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-20 13:30:39,590 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-20 13:30:39,590 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-09-20 13:30:39,590 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-09-20 13:30:39,590 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-09-20 13:30:39,591 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-20 13:30:39,591 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-09-20 13:30:39,591 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-09-20 13:30:39,591 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-09-20 13:30:39,591 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-09-20 13:30:39,591 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-20 13:30:39,591 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-09-20 13:30:39,592 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-09-20 13:30:39,592 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-20 13:30:39,592 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-09-20 13:30:39,592 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-09-20 13:30:39,592 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-20 13:30:39,592 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-09-20 13:30:39,593 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-09-20 13:30:39,593 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-20 13:30:39,593 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-09-20 13:30:39,593 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-09-20 13:30:39,593 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-09-20 13:30:39,594 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-09-20 13:30:39,594 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-09-20 13:30:39,594 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-09-20 13:30:39,594 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-09-20 13:30:39,594 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2019-09-20 13:30:39,594 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-09-20 13:30:39,595 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-09-20 13:30:39,595 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-09-20 13:30:39,595 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-09-20 13:30:39,596 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-09-20 13:30:39,596 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-09-20 13:30:39,596 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-09-20 13:30:39,596 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-09-20 13:30:39,596 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-09-20 13:30:39,596 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-09-20 13:30:39,597 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2019-09-20 13:30:39,597 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-09-20 13:30:39,597 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-09-20 13:30:39,598 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-09-20 13:30:39,598 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-09-20 13:30:39,598 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-09-20 13:30:39,599 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-09-20 13:30:39,599 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-20 13:30:39,599 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-20 13:30:39,599 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-09-20 13:30:39,599 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-20 13:30:40,652 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-20 13:30:40,652 INFO L283 CfgBuilder]: Removed 5 assume(true) statements. [2019-09-20 13:30:40,654 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:30:40 BoogieIcfgContainer [2019-09-20 13:30:40,654 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-20 13:30:40,656 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-20 13:30:40,656 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-20 13:30:40,659 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-20 13:30:40,660 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 01:30:38" (1/3) ... [2019-09-20 13:30:40,661 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ba7ca59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:30:40, skipping insertion in model container [2019-09-20 13:30:40,661 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:39" (2/3) ... [2019-09-20 13:30:40,661 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ba7ca59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:30:40, skipping insertion in model container [2019-09-20 13:30:40,661 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:30:40" (3/3) ... [2019-09-20 13:30:40,664 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product03.cil.c [2019-09-20 13:30:40,674 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-20 13:30:40,699 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-20 13:30:40,715 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-20 13:30:40,741 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-20 13:30:40,741 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-20 13:30:40,741 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-20 13:30:40,741 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-20 13:30:40,742 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-20 13:30:40,742 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-20 13:30:40,742 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-20 13:30:40,742 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-20 13:30:40,761 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states. [2019-09-20 13:30:40,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-09-20 13:30:40,772 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:30:40,773 INFO L407 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] [2019-09-20 13:30:40,776 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:30:40,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:30:40,782 INFO L82 PathProgramCache]: Analyzing trace with hash -1645653850, now seen corresponding path program 1 times [2019-09-20 13:30:40,784 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:30:40,844 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:40,844 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:30:40,844 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:40,844 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:30:41,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:30:41,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:30:41,157 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:30:41,158 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-20 13:30:41,159 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:30:41,165 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-20 13:30:41,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-20 13:30:41,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:30:41,182 INFO L87 Difference]: Start difference. First operand 133 states. Second operand 2 states. [2019-09-20 13:30:41,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:30:41,205 INFO L93 Difference]: Finished difference Result 101 states and 116 transitions. [2019-09-20 13:30:41,205 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-20 13:30:41,207 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 46 [2019-09-20 13:30:41,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:30:41,221 INFO L225 Difference]: With dead ends: 101 [2019-09-20 13:30:41,221 INFO L226 Difference]: Without dead ends: 90 [2019-09-20 13:30:41,225 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:30:41,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2019-09-20 13:30:41,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2019-09-20 13:30:41,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2019-09-20 13:30:41,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 104 transitions. [2019-09-20 13:30:41,296 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 104 transitions. Word has length 46 [2019-09-20 13:30:41,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:30:41,297 INFO L475 AbstractCegarLoop]: Abstraction has 90 states and 104 transitions. [2019-09-20 13:30:41,297 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-20 13:30:41,297 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 104 transitions. [2019-09-20 13:30:41,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-09-20 13:30:41,300 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:30:41,301 INFO L407 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] [2019-09-20 13:30:41,301 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:30:41,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:30:41,302 INFO L82 PathProgramCache]: Analyzing trace with hash -1821384666, now seen corresponding path program 1 times [2019-09-20 13:30:41,302 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:30:41,305 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:41,305 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:30:41,305 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:41,305 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:30:41,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:30:41,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:30:41,446 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:30:41,446 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-20 13:30:41,446 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:30:41,449 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-20 13:30:41,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-20 13:30:41,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-20 13:30:41,450 INFO L87 Difference]: Start difference. First operand 90 states and 104 transitions. Second operand 3 states. [2019-09-20 13:30:41,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:30:41,462 INFO L93 Difference]: Finished difference Result 81 states and 92 transitions. [2019-09-20 13:30:41,463 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-20 13:30:41,463 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 47 [2019-09-20 13:30:41,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:30:41,465 INFO L225 Difference]: With dead ends: 81 [2019-09-20 13:30:41,465 INFO L226 Difference]: Without dead ends: 81 [2019-09-20 13:30:41,466 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-20 13:30:41,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2019-09-20 13:30:41,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2019-09-20 13:30:41,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2019-09-20 13:30:41,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 92 transitions. [2019-09-20 13:30:41,477 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 92 transitions. Word has length 47 [2019-09-20 13:30:41,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:30:41,477 INFO L475 AbstractCegarLoop]: Abstraction has 81 states and 92 transitions. [2019-09-20 13:30:41,477 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-20 13:30:41,477 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 92 transitions. [2019-09-20 13:30:41,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2019-09-20 13:30:41,482 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:30:41,483 INFO L407 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] [2019-09-20 13:30:41,483 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:30:41,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:30:41,483 INFO L82 PathProgramCache]: Analyzing trace with hash 1519246168, now seen corresponding path program 1 times [2019-09-20 13:30:41,483 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:30:41,486 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:41,486 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:30:41,486 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:41,486 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:30:41,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:30:41,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:30:41,638 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:30:41,638 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-20 13:30:41,638 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:30:41,639 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-20 13:30:41,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-20 13:30:41,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-09-20 13:30:41,640 INFO L87 Difference]: Start difference. First operand 81 states and 92 transitions. Second operand 7 states. [2019-09-20 13:30:42,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:30:42,034 INFO L93 Difference]: Finished difference Result 188 states and 222 transitions. [2019-09-20 13:30:42,035 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-20 13:30:42,036 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 51 [2019-09-20 13:30:42,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:30:42,045 INFO L225 Difference]: With dead ends: 188 [2019-09-20 13:30:42,046 INFO L226 Difference]: Without dead ends: 188 [2019-09-20 13:30:42,046 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2019-09-20 13:30:42,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2019-09-20 13:30:42,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 168. [2019-09-20 13:30:42,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2019-09-20 13:30:42,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 200 transitions. [2019-09-20 13:30:42,088 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 200 transitions. Word has length 51 [2019-09-20 13:30:42,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:30:42,088 INFO L475 AbstractCegarLoop]: Abstraction has 168 states and 200 transitions. [2019-09-20 13:30:42,089 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-20 13:30:42,089 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 200 transitions. [2019-09-20 13:30:42,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2019-09-20 13:30:42,090 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:30:42,091 INFO L407 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] [2019-09-20 13:30:42,091 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:30:42,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:30:42,091 INFO L82 PathProgramCache]: Analyzing trace with hash 1651463691, now seen corresponding path program 1 times [2019-09-20 13:30:42,092 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:30:42,094 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:42,094 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:30:42,094 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:42,094 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:30:42,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:30:42,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:30:42,288 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:30:42,288 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-09-20 13:30:42,288 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:30:42,289 INFO L454 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-09-20 13:30:42,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-09-20 13:30:42,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2019-09-20 13:30:42,290 INFO L87 Difference]: Start difference. First operand 168 states and 200 transitions. Second operand 10 states. [2019-09-20 13:30:42,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:30:42,796 INFO L93 Difference]: Finished difference Result 408 states and 511 transitions. [2019-09-20 13:30:42,797 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-09-20 13:30:42,797 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 54 [2019-09-20 13:30:42,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:30:42,813 INFO L225 Difference]: With dead ends: 408 [2019-09-20 13:30:42,813 INFO L226 Difference]: Without dead ends: 408 [2019-09-20 13:30:42,814 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2019-09-20 13:30:42,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2019-09-20 13:30:42,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 396. [2019-09-20 13:30:42,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 396 states. [2019-09-20 13:30:42,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 490 transitions. [2019-09-20 13:30:42,883 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 490 transitions. Word has length 54 [2019-09-20 13:30:42,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:30:42,884 INFO L475 AbstractCegarLoop]: Abstraction has 396 states and 490 transitions. [2019-09-20 13:30:42,884 INFO L476 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-09-20 13:30:42,884 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 490 transitions. [2019-09-20 13:30:42,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2019-09-20 13:30:42,887 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:30:42,888 INFO L407 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] [2019-09-20 13:30:42,888 INFO L418 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:30:42,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:30:42,888 INFO L82 PathProgramCache]: Analyzing trace with hash 244560101, now seen corresponding path program 1 times [2019-09-20 13:30:42,889 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:30:42,891 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:42,891 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:30:42,891 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:42,891 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:30:42,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:30:42,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:30:42,985 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:30:42,985 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-20 13:30:42,985 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:30:42,986 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-20 13:30:42,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-20 13:30:42,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-20 13:30:42,993 INFO L87 Difference]: Start difference. First operand 396 states and 490 transitions. Second operand 3 states. [2019-09-20 13:30:43,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:30:43,015 INFO L93 Difference]: Finished difference Result 354 states and 416 transitions. [2019-09-20 13:30:43,016 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-20 13:30:43,017 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 58 [2019-09-20 13:30:43,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:30:43,021 INFO L225 Difference]: With dead ends: 354 [2019-09-20 13:30:43,021 INFO L226 Difference]: Without dead ends: 354 [2019-09-20 13:30:43,022 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-20 13:30:43,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2019-09-20 13:30:43,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 354. [2019-09-20 13:30:43,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 354 states. [2019-09-20 13:30:43,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 416 transitions. [2019-09-20 13:30:43,054 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 416 transitions. Word has length 58 [2019-09-20 13:30:43,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:30:43,054 INFO L475 AbstractCegarLoop]: Abstraction has 354 states and 416 transitions. [2019-09-20 13:30:43,055 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-20 13:30:43,055 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 416 transitions. [2019-09-20 13:30:43,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2019-09-20 13:30:43,063 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:30:43,064 INFO L407 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] [2019-09-20 13:30:43,064 INFO L418 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:30:43,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:30:43,065 INFO L82 PathProgramCache]: Analyzing trace with hash 1723103606, now seen corresponding path program 1 times [2019-09-20 13:30:43,065 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:30:43,068 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:43,068 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:30:43,068 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:43,069 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:30:43,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:30:43,193 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-09-20 13:30:43,193 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:30:43,193 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-20 13:30:43,193 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:30:43,194 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-20 13:30:43,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-20 13:30:43,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-20 13:30:43,195 INFO L87 Difference]: Start difference. First operand 354 states and 416 transitions. Second operand 6 states. [2019-09-20 13:30:43,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:30:43,330 INFO L93 Difference]: Finished difference Result 357 states and 417 transitions. [2019-09-20 13:30:43,330 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-20 13:30:43,331 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 88 [2019-09-20 13:30:43,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:30:43,331 INFO L225 Difference]: With dead ends: 357 [2019-09-20 13:30:43,332 INFO L226 Difference]: Without dead ends: 0 [2019-09-20 13:30:43,332 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-09-20 13:30:43,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-20 13:30:43,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-20 13:30:43,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-20 13:30:43,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-20 13:30:43,333 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 88 [2019-09-20 13:30:43,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:30:43,333 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-20 13:30:43,333 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-20 13:30:43,334 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-20 13:30:43,334 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-20 13:30:43,339 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 01:30:43 BoogieIcfgContainer [2019-09-20 13:30:43,339 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-20 13:30:43,342 INFO L168 Benchmark]: Toolchain (without parser) took 4644.58 ms. Allocated memory was 138.9 MB in the beginning and 265.3 MB in the end (delta: 126.4 MB). Free memory was 85.9 MB in the beginning and 114.1 MB in the end (delta: -28.1 MB). Peak memory consumption was 98.2 MB. Max. memory is 7.1 GB. [2019-09-20 13:30:43,343 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 138.9 MB. Free memory was 105.0 MB in the beginning and 104.8 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-20 13:30:43,344 INFO L168 Benchmark]: CACSL2BoogieTranslator took 715.45 ms. Allocated memory was 138.9 MB in the beginning and 199.8 MB in the end (delta: 60.8 MB). Free memory was 85.7 MB in the beginning and 164.6 MB in the end (delta: -78.8 MB). Peak memory consumption was 22.5 MB. Max. memory is 7.1 GB. [2019-09-20 13:30:43,345 INFO L168 Benchmark]: Boogie Preprocessor took 106.81 ms. Allocated memory is still 199.8 MB. Free memory was 164.6 MB in the beginning and 160.9 MB in the end (delta: 3.7 MB). Peak memory consumption was 3.7 MB. Max. memory is 7.1 GB. [2019-09-20 13:30:43,345 INFO L168 Benchmark]: RCFGBuilder took 1131.96 ms. Allocated memory is still 199.8 MB. Free memory was 160.9 MB in the beginning and 78.1 MB in the end (delta: 82.8 MB). Peak memory consumption was 82.8 MB. Max. memory is 7.1 GB. [2019-09-20 13:30:43,346 INFO L168 Benchmark]: TraceAbstraction took 2683.17 ms. Allocated memory was 199.8 MB in the beginning and 265.3 MB in the end (delta: 65.5 MB). Free memory was 78.1 MB in the beginning and 114.1 MB in the end (delta: -36.0 MB). Peak memory consumption was 29.6 MB. Max. memory is 7.1 GB. [2019-09-20 13:30:43,350 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 138.9 MB. Free memory was 105.0 MB in the beginning and 104.8 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 715.45 ms. Allocated memory was 138.9 MB in the beginning and 199.8 MB in the end (delta: 60.8 MB). Free memory was 85.7 MB in the beginning and 164.6 MB in the end (delta: -78.8 MB). Peak memory consumption was 22.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 106.81 ms. Allocated memory is still 199.8 MB. Free memory was 164.6 MB in the beginning and 160.9 MB in the end (delta: 3.7 MB). Peak memory consumption was 3.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1131.96 ms. Allocated memory is still 199.8 MB. Free memory was 160.9 MB in the beginning and 78.1 MB in the end (delta: 82.8 MB). Peak memory consumption was 82.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2683.17 ms. Allocated memory was 199.8 MB in the beginning and 265.3 MB in the end (delta: 65.5 MB). Free memory was 78.1 MB in the beginning and 114.1 MB in the end (delta: -36.0 MB). Peak memory consumption was 29.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 44]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 35 procedures, 200 locations, 1 error locations. SAFE Result, 2.6s OverallTime, 6 OverallIterations, 2 TraceHistogramMax, 1.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 571 SDtfs, 365 SDslu, 1286 SDs, 0 SdLazy, 401 SolverSat, 29 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 57 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=396occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 6 MinimizatonAttempts, 32 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 344 NumberOfCodeBlocks, 344 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 338 ConstructedInterpolants, 0 QuantifiedInterpolants, 36013 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 26/26 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...