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_spec2_product51.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-efa34d5 [2019-09-16 17:08:27,642 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-16 17:08:27,644 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-16 17:08:27,657 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-16 17:08:27,658 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-16 17:08:27,659 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-16 17:08:27,660 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-16 17:08:27,662 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-16 17:08:27,664 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-16 17:08:27,665 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-16 17:08:27,666 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-16 17:08:27,667 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-16 17:08:27,667 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-16 17:08:27,668 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-16 17:08:27,670 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-16 17:08:27,671 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-16 17:08:27,672 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-16 17:08:27,673 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-16 17:08:27,674 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-16 17:08:27,676 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-16 17:08:27,678 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-16 17:08:27,679 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-16 17:08:27,680 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-16 17:08:27,681 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-16 17:08:27,683 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-16 17:08:27,683 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-16 17:08:27,683 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-16 17:08:27,684 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-16 17:08:27,684 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-16 17:08:27,685 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-16 17:08:27,686 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-16 17:08:27,686 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-16 17:08:27,687 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-16 17:08:27,688 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-16 17:08:27,689 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-16 17:08:27,689 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-16 17:08:27,690 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-16 17:08:27,690 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-16 17:08:27,690 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-16 17:08:27,691 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-16 17:08:27,692 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-16 17:08:27,693 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 [2019-09-16 17:08:27,708 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-16 17:08:27,708 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-16 17:08:27,708 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-16 17:08:27,709 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-16 17:08:27,709 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-16 17:08:27,710 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-16 17:08:27,710 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-16 17:08:27,710 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-16 17:08:27,710 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-16 17:08:27,711 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-16 17:08:27,711 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-16 17:08:27,712 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-16 17:08:27,712 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-16 17:08:27,712 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-16 17:08:27,712 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-16 17:08:27,712 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-16 17:08:27,713 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-16 17:08:27,713 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-16 17:08:27,713 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-16 17:08:27,713 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-16 17:08:27,713 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-16 17:08:27,714 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-16 17:08:27,714 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-16 17:08:27,714 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-16 17:08:27,714 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-16 17:08:27,714 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-16 17:08:27,715 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-16 17:08:27,715 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-16 17:08:27,715 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-16 17:08:27,715 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-16 17:08:27,744 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-16 17:08:27,757 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-16 17:08:27,760 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-16 17:08:27,762 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-16 17:08:27,762 INFO L275 PluginConnector]: CDTParser initialized [2019-09-16 17:08:27,763 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product51.cil.c [2019-09-16 17:08:27,848 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8267aeec4/cecd39b18b6848f098b3e965c27297d3/FLAG10acc6be6 [2019-09-16 17:08:28,364 INFO L306 CDTParser]: Found 1 translation units. [2019-09-16 17:08:28,365 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec2_product51.cil.c [2019-09-16 17:08:28,380 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8267aeec4/cecd39b18b6848f098b3e965c27297d3/FLAG10acc6be6 [2019-09-16 17:08:28,697 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8267aeec4/cecd39b18b6848f098b3e965c27297d3 [2019-09-16 17:08:28,707 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-16 17:08:28,708 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-16 17:08:28,709 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-16 17:08:28,710 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-16 17:08:28,713 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-16 17:08:28,715 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 05:08:28" (1/1) ... [2019-09-16 17:08:28,718 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31cc3d26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:08:28, skipping insertion in model container [2019-09-16 17:08:28,718 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 05:08:28" (1/1) ... [2019-09-16 17:08:28,727 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-16 17:08:28,798 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-16 17:08:29,329 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-16 17:08:29,349 INFO L188 MainTranslator]: Completed pre-run [2019-09-16 17:08:29,467 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-16 17:08:29,515 INFO L192 MainTranslator]: Completed translation [2019-09-16 17:08:29,515 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:08:29 WrapperNode [2019-09-16 17:08:29,516 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-16 17:08:29,516 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-16 17:08:29,516 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-16 17:08:29,516 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-16 17:08:29,528 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:08:29" (1/1) ... [2019-09-16 17:08:29,528 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:08:29" (1/1) ... [2019-09-16 17:08:29,548 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:08:29" (1/1) ... [2019-09-16 17:08:29,548 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:08:29" (1/1) ... [2019-09-16 17:08:29,595 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:08:29" (1/1) ... [2019-09-16 17:08:29,613 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:08:29" (1/1) ... [2019-09-16 17:08:29,620 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:08:29" (1/1) ... [2019-09-16 17:08:29,642 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-16 17:08:29,643 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-16 17:08:29,643 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-16 17:08:29,646 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-16 17:08:29,647 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:08:29" (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 [2019-09-16 17:08:29,726 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-16 17:08:29,727 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-16 17:08:29,727 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-09-16 17:08:29,727 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-09-16 17:08:29,727 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-09-16 17:08:29,728 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-09-16 17:08:29,728 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-09-16 17:08:29,728 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-09-16 17:08:29,728 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-09-16 17:08:29,728 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-09-16 17:08:29,729 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-09-16 17:08:29,729 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-09-16 17:08:29,729 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-09-16 17:08:29,729 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-09-16 17:08:29,729 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-09-16 17:08:29,730 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2019-09-16 17:08:29,730 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2019-09-16 17:08:29,730 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2019-09-16 17:08:29,731 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-09-16 17:08:29,731 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-09-16 17:08:29,731 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-09-16 17:08:29,731 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-09-16 17:08:29,731 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-09-16 17:08:29,731 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-09-16 17:08:29,732 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-09-16 17:08:29,732 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-09-16 17:08:29,732 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-09-16 17:08:29,732 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-09-16 17:08:29,732 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-09-16 17:08:29,733 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-09-16 17:08:29,733 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-09-16 17:08:29,733 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-09-16 17:08:29,733 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-09-16 17:08:29,733 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-09-16 17:08:29,734 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-16 17:08:29,734 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-09-16 17:08:29,734 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-09-16 17:08:29,734 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-09-16 17:08:29,734 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-09-16 17:08:29,735 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-09-16 17:08:29,735 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-09-16 17:08:29,735 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-09-16 17:08:29,735 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-16 17:08:29,735 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-16 17:08:29,735 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-09-16 17:08:29,736 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-09-16 17:08:29,736 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-09-16 17:08:29,736 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2019-09-16 17:08:29,736 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-09-16 17:08:29,736 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-09-16 17:08:29,736 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-09-16 17:08:29,736 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-09-16 17:08:29,737 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-09-16 17:08:29,737 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-09-16 17:08:29,737 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-09-16 17:08:29,737 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-09-16 17:08:29,737 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-09-16 17:08:29,737 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-09-16 17:08:29,738 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-09-16 17:08:29,738 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-09-16 17:08:29,738 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2019-09-16 17:08:29,738 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-09-16 17:08:29,738 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-09-16 17:08:29,738 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-09-16 17:08:29,738 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-09-16 17:08:29,739 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-09-16 17:08:29,739 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-09-16 17:08:29,739 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-16 17:08:29,739 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-09-16 17:08:29,739 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2019-09-16 17:08:29,739 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-09-16 17:08:29,740 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-09-16 17:08:29,740 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-09-16 17:08:29,740 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-09-16 17:08:29,740 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-09-16 17:08:29,740 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-09-16 17:08:29,740 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-09-16 17:08:29,741 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-09-16 17:08:29,741 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-16 17:08:29,741 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-09-16 17:08:29,741 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-16 17:08:29,741 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-09-16 17:08:29,741 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-09-16 17:08:29,741 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-09-16 17:08:29,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-09-16 17:08:29,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-16 17:08:29,742 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-09-16 17:08:29,742 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-09-16 17:08:29,742 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-16 17:08:29,742 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-09-16 17:08:29,743 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-09-16 17:08:29,743 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-16 17:08:29,743 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-09-16 17:08:29,743 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-09-16 17:08:29,743 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-09-16 17:08:29,743 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-16 17:08:29,744 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-09-16 17:08:29,744 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-16 17:08:30,982 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-16 17:08:30,983 INFO L283 CfgBuilder]: Removed 5 assume(true) statements. [2019-09-16 17:08:30,985 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 05:08:30 BoogieIcfgContainer [2019-09-16 17:08:30,985 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-16 17:08:30,988 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-16 17:08:30,988 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-16 17:08:30,992 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-16 17:08:30,993 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 05:08:28" (1/3) ... [2019-09-16 17:08:30,994 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2aa74962 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 05:08:30, skipping insertion in model container [2019-09-16 17:08:30,994 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:08:29" (2/3) ... [2019-09-16 17:08:30,995 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2aa74962 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 05:08:30, skipping insertion in model container [2019-09-16 17:08:30,995 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 05:08:30" (3/3) ... [2019-09-16 17:08:30,997 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product51.cil.c [2019-09-16 17:08:31,008 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-16 17:08:31,020 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-16 17:08:31,038 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-16 17:08:31,068 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-16 17:08:31,069 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-16 17:08:31,069 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-16 17:08:31,069 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-16 17:08:31,070 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-16 17:08:31,070 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-16 17:08:31,071 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-16 17:08:31,071 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-16 17:08:31,094 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states. [2019-09-16 17:08:31,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2019-09-16 17:08:31,115 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:08:31,116 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] [2019-09-16 17:08:31,120 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:08:31,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:08:31,127 INFO L82 PathProgramCache]: Analyzing trace with hash 2010639633, now seen corresponding path program 1 times [2019-09-16 17:08:31,129 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:08:31,189 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:08:31,190 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:08:31,190 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:08:31,190 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:08:31,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:08:31,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-16 17:08:31,519 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:08:31,520 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-16 17:08:31,520 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:08:31,526 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-16 17:08:31,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-16 17:08:31,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-16 17:08:31,548 INFO L87 Difference]: Start difference. First operand 185 states. Second operand 2 states. [2019-09-16 17:08:31,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:08:31,579 INFO L93 Difference]: Finished difference Result 150 states and 176 transitions. [2019-09-16 17:08:31,579 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-16 17:08:31,581 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 51 [2019-09-16 17:08:31,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:08:31,595 INFO L225 Difference]: With dead ends: 150 [2019-09-16 17:08:31,595 INFO L226 Difference]: Without dead ends: 139 [2019-09-16 17:08:31,597 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 [2019-09-16 17:08:31,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2019-09-16 17:08:31,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2019-09-16 17:08:31,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2019-09-16 17:08:31,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 164 transitions. [2019-09-16 17:08:31,653 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 164 transitions. Word has length 51 [2019-09-16 17:08:31,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:08:31,653 INFO L475 AbstractCegarLoop]: Abstraction has 139 states and 164 transitions. [2019-09-16 17:08:31,654 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-16 17:08:31,654 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 164 transitions. [2019-09-16 17:08:31,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-09-16 17:08:31,657 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:08:31,657 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] [2019-09-16 17:08:31,658 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:08:31,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:08:31,658 INFO L82 PathProgramCache]: Analyzing trace with hash -119912956, now seen corresponding path program 1 times [2019-09-16 17:08:31,658 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:08:31,661 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:08:31,661 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:08:31,661 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:08:31,661 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:08:31,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:08:31,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-16 17:08:31,780 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:08:31,780 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-16 17:08:31,781 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:08:31,782 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-16 17:08:31,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-16 17:08:31,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-16 17:08:31,783 INFO L87 Difference]: Start difference. First operand 139 states and 164 transitions. Second operand 3 states. [2019-09-16 17:08:31,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:08:31,800 INFO L93 Difference]: Finished difference Result 130 states and 152 transitions. [2019-09-16 17:08:31,801 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-16 17:08:31,801 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2019-09-16 17:08:31,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:08:31,803 INFO L225 Difference]: With dead ends: 130 [2019-09-16 17:08:31,803 INFO L226 Difference]: Without dead ends: 130 [2019-09-16 17:08:31,804 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 [2019-09-16 17:08:31,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2019-09-16 17:08:31,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2019-09-16 17:08:31,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2019-09-16 17:08:31,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 152 transitions. [2019-09-16 17:08:31,817 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 152 transitions. Word has length 52 [2019-09-16 17:08:31,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:08:31,817 INFO L475 AbstractCegarLoop]: Abstraction has 130 states and 152 transitions. [2019-09-16 17:08:31,817 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-16 17:08:31,817 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 152 transitions. [2019-09-16 17:08:31,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2019-09-16 17:08:31,819 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:08:31,820 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] [2019-09-16 17:08:31,820 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:08:31,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:08:31,821 INFO L82 PathProgramCache]: Analyzing trace with hash 1399098738, now seen corresponding path program 1 times [2019-09-16 17:08:31,821 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:08:31,823 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:08:31,824 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:08:31,824 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:08:31,824 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:08:31,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:08:32,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-16 17:08:32,001 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:08:32,001 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-16 17:08:32,001 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:08:32,002 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-16 17:08:32,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-16 17:08:32,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-09-16 17:08:32,003 INFO L87 Difference]: Start difference. First operand 130 states and 152 transitions. Second operand 7 states. [2019-09-16 17:08:32,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:08:32,510 INFO L93 Difference]: Finished difference Result 283 states and 340 transitions. [2019-09-16 17:08:32,510 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-16 17:08:32,511 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 56 [2019-09-16 17:08:32,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:08:32,516 INFO L225 Difference]: With dead ends: 283 [2019-09-16 17:08:32,516 INFO L226 Difference]: Without dead ends: 283 [2019-09-16 17:08:32,517 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 [2019-09-16 17:08:32,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2019-09-16 17:08:32,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 275. [2019-09-16 17:08:32,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 275 states. [2019-09-16 17:08:32,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 334 transitions. [2019-09-16 17:08:32,569 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 334 transitions. Word has length 56 [2019-09-16 17:08:32,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:08:32,570 INFO L475 AbstractCegarLoop]: Abstraction has 275 states and 334 transitions. [2019-09-16 17:08:32,570 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-16 17:08:32,572 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 334 transitions. [2019-09-16 17:08:32,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2019-09-16 17:08:32,579 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:08:32,579 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, 1, 1, 1, 1] [2019-09-16 17:08:32,579 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:08:32,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:08:32,580 INFO L82 PathProgramCache]: Analyzing trace with hash -1261702676, now seen corresponding path program 1 times [2019-09-16 17:08:32,581 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:08:32,584 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:08:32,585 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:08:32,585 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:08:32,585 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:08:32,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:08:32,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-16 17:08:32,749 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:08:32,750 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-16 17:08:32,750 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:08:32,750 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-16 17:08:32,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-16 17:08:32,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-16 17:08:32,751 INFO L87 Difference]: Start difference. First operand 275 states and 334 transitions. Second operand 6 states. [2019-09-16 17:08:32,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:08:32,964 INFO L93 Difference]: Finished difference Result 504 states and 614 transitions. [2019-09-16 17:08:32,967 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-16 17:08:32,967 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 62 [2019-09-16 17:08:32,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:08:32,972 INFO L225 Difference]: With dead ends: 504 [2019-09-16 17:08:32,972 INFO L226 Difference]: Without dead ends: 504 [2019-09-16 17:08:32,973 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-09-16 17:08:32,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 504 states. [2019-09-16 17:08:33,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 504 to 498. [2019-09-16 17:08:33,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 498 states. [2019-09-16 17:08:33,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 498 states to 498 states and 608 transitions. [2019-09-16 17:08:33,009 INFO L78 Accepts]: Start accepts. Automaton has 498 states and 608 transitions. Word has length 62 [2019-09-16 17:08:33,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:08:33,010 INFO L475 AbstractCegarLoop]: Abstraction has 498 states and 608 transitions. [2019-09-16 17:08:33,010 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-16 17:08:33,010 INFO L276 IsEmpty]: Start isEmpty. Operand 498 states and 608 transitions. [2019-09-16 17:08:33,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2019-09-16 17:08:33,015 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:08:33,015 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, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 17:08:33,015 INFO L418 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:08:33,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:08:33,016 INFO L82 PathProgramCache]: Analyzing trace with hash -1700300984, now seen corresponding path program 1 times [2019-09-16 17:08:33,016 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:08:33,019 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:08:33,019 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:08:33,019 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:08:33,019 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:08:33,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:08:33,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-16 17:08:33,144 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:08:33,144 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-16 17:08:33,145 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:08:33,147 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-16 17:08:33,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-16 17:08:33,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-09-16 17:08:33,151 INFO L87 Difference]: Start difference. First operand 498 states and 608 transitions. Second operand 7 states. [2019-09-16 17:08:33,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:08:33,881 INFO L93 Difference]: Finished difference Result 815 states and 1038 transitions. [2019-09-16 17:08:33,881 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-16 17:08:33,882 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 66 [2019-09-16 17:08:33,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:08:33,888 INFO L225 Difference]: With dead ends: 815 [2019-09-16 17:08:33,888 INFO L226 Difference]: Without dead ends: 815 [2019-09-16 17:08:33,889 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2019-09-16 17:08:33,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 815 states. [2019-09-16 17:08:33,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 815 to 719. [2019-09-16 17:08:33,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 719 states. [2019-09-16 17:08:33,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 719 states to 719 states and 875 transitions. [2019-09-16 17:08:33,968 INFO L78 Accepts]: Start accepts. Automaton has 719 states and 875 transitions. Word has length 66 [2019-09-16 17:08:33,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:08:33,969 INFO L475 AbstractCegarLoop]: Abstraction has 719 states and 875 transitions. [2019-09-16 17:08:33,969 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-16 17:08:33,969 INFO L276 IsEmpty]: Start isEmpty. Operand 719 states and 875 transitions. [2019-09-16 17:08:33,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2019-09-16 17:08:33,975 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:08:33,976 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 17:08:33,976 INFO L418 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:08:33,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:08:33,978 INFO L82 PathProgramCache]: Analyzing trace with hash -1342584408, now seen corresponding path program 1 times [2019-09-16 17:08:33,978 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:08:33,983 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:08:33,983 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:08:33,983 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:08:33,984 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:08:34,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:08:34,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-16 17:08:34,109 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:08:34,109 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-16 17:08:34,109 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:08:34,110 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-16 17:08:34,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-16 17:08:34,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-16 17:08:34,111 INFO L87 Difference]: Start difference. First operand 719 states and 875 transitions. Second operand 6 states. [2019-09-16 17:08:34,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:08:34,148 INFO L93 Difference]: Finished difference Result 739 states and 895 transitions. [2019-09-16 17:08:34,148 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-16 17:08:34,149 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 88 [2019-09-16 17:08:34,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:08:34,155 INFO L225 Difference]: With dead ends: 739 [2019-09-16 17:08:34,155 INFO L226 Difference]: Without dead ends: 739 [2019-09-16 17:08:34,156 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-09-16 17:08:34,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 739 states. [2019-09-16 17:08:34,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 739 to 739. [2019-09-16 17:08:34,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 739 states. [2019-09-16 17:08:34,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 739 states to 739 states and 895 transitions. [2019-09-16 17:08:34,196 INFO L78 Accepts]: Start accepts. Automaton has 739 states and 895 transitions. Word has length 88 [2019-09-16 17:08:34,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:08:34,196 INFO L475 AbstractCegarLoop]: Abstraction has 739 states and 895 transitions. [2019-09-16 17:08:34,197 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-16 17:08:34,197 INFO L276 IsEmpty]: Start isEmpty. Operand 739 states and 895 transitions. [2019-09-16 17:08:34,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2019-09-16 17:08:34,201 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:08:34,202 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 17:08:34,202 INFO L418 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:08:34,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:08:34,202 INFO L82 PathProgramCache]: Analyzing trace with hash -640984534, now seen corresponding path program 1 times [2019-09-16 17:08:34,202 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:08:34,207 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:08:34,207 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:08:34,207 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:08:34,207 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:08:34,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:08:34,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-16 17:08:34,311 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:08:34,311 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-09-16 17:08:34,311 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:08:34,311 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-16 17:08:34,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-16 17:08:34,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-09-16 17:08:34,313 INFO L87 Difference]: Start difference. First operand 739 states and 895 transitions. Second operand 8 states. [2019-09-16 17:08:34,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:08:34,354 INFO L93 Difference]: Finished difference Result 767 states and 923 transitions. [2019-09-16 17:08:34,355 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-16 17:08:34,355 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 88 [2019-09-16 17:08:34,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:08:34,361 INFO L225 Difference]: With dead ends: 767 [2019-09-16 17:08:34,361 INFO L226 Difference]: Without dead ends: 767 [2019-09-16 17:08:34,362 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-09-16 17:08:34,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 767 states. [2019-09-16 17:08:34,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 767 to 755. [2019-09-16 17:08:34,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 755 states. [2019-09-16 17:08:34,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 755 states to 755 states and 911 transitions. [2019-09-16 17:08:34,405 INFO L78 Accepts]: Start accepts. Automaton has 755 states and 911 transitions. Word has length 88 [2019-09-16 17:08:34,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:08:34,405 INFO L475 AbstractCegarLoop]: Abstraction has 755 states and 911 transitions. [2019-09-16 17:08:34,406 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-16 17:08:34,406 INFO L276 IsEmpty]: Start isEmpty. Operand 755 states and 911 transitions. [2019-09-16 17:08:34,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2019-09-16 17:08:34,408 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:08:34,408 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 17:08:34,408 INFO L418 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:08:34,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:08:34,409 INFO L82 PathProgramCache]: Analyzing trace with hash 1084496363, now seen corresponding path program 1 times [2019-09-16 17:08:34,409 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:08:34,411 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:08:34,411 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:08:34,411 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:08:34,412 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:08:34,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:08:34,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-16 17:08:34,482 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:08:34,482 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-16 17:08:34,482 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:08:34,483 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-16 17:08:34,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-16 17:08:34,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-16 17:08:34,484 INFO L87 Difference]: Start difference. First operand 755 states and 911 transitions. Second operand 4 states. [2019-09-16 17:08:34,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:08:34,717 INFO L93 Difference]: Finished difference Result 1718 states and 2159 transitions. [2019-09-16 17:08:34,717 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-16 17:08:34,718 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 88 [2019-09-16 17:08:34,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:08:34,729 INFO L225 Difference]: With dead ends: 1718 [2019-09-16 17:08:34,729 INFO L226 Difference]: Without dead ends: 1718 [2019-09-16 17:08:34,729 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-16 17:08:34,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1718 states. [2019-09-16 17:08:34,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1718 to 1687. [2019-09-16 17:08:34,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1687 states. [2019-09-16 17:08:34,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1687 states to 1687 states and 2087 transitions. [2019-09-16 17:08:34,845 INFO L78 Accepts]: Start accepts. Automaton has 1687 states and 2087 transitions. Word has length 88 [2019-09-16 17:08:34,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:08:34,846 INFO L475 AbstractCegarLoop]: Abstraction has 1687 states and 2087 transitions. [2019-09-16 17:08:34,846 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-16 17:08:34,846 INFO L276 IsEmpty]: Start isEmpty. Operand 1687 states and 2087 transitions. [2019-09-16 17:08:34,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2019-09-16 17:08:34,849 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:08:34,850 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 17:08:34,850 INFO L418 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:08:34,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:08:34,850 INFO L82 PathProgramCache]: Analyzing trace with hash 269339525, now seen corresponding path program 1 times [2019-09-16 17:08:34,851 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:08:34,853 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:08:34,853 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:08:34,853 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:08:34,853 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:08:34,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:08:34,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-16 17:08:34,911 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:08:34,911 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-16 17:08:34,911 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:08:34,912 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-16 17:08:34,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-16 17:08:34,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-16 17:08:34,913 INFO L87 Difference]: Start difference. First operand 1687 states and 2087 transitions. Second operand 3 states. [2019-09-16 17:08:34,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:08:34,959 INFO L93 Difference]: Finished difference Result 2683 states and 3419 transitions. [2019-09-16 17:08:34,959 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-16 17:08:34,959 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 92 [2019-09-16 17:08:34,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:08:34,974 INFO L225 Difference]: With dead ends: 2683 [2019-09-16 17:08:34,974 INFO L226 Difference]: Without dead ends: 2683 [2019-09-16 17:08:34,975 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 [2019-09-16 17:08:34,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2683 states. [2019-09-16 17:08:35,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2683 to 2497. [2019-09-16 17:08:35,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2497 states. [2019-09-16 17:08:35,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2497 states to 2497 states and 3197 transitions. [2019-09-16 17:08:35,088 INFO L78 Accepts]: Start accepts. Automaton has 2497 states and 3197 transitions. Word has length 92 [2019-09-16 17:08:35,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:08:35,092 INFO L475 AbstractCegarLoop]: Abstraction has 2497 states and 3197 transitions. [2019-09-16 17:08:35,092 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-16 17:08:35,093 INFO L276 IsEmpty]: Start isEmpty. Operand 2497 states and 3197 transitions. [2019-09-16 17:08:35,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2019-09-16 17:08:35,106 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:08:35,107 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, 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, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 17:08:35,107 INFO L418 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:08:35,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:08:35,108 INFO L82 PathProgramCache]: Analyzing trace with hash -173264234, now seen corresponding path program 1 times [2019-09-16 17:08:35,108 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:08:35,112 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:08:35,112 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:08:35,112 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:08:35,112 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:08:35,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:08:35,244 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 25 proven. 14 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-09-16 17:08:35,245 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-16 17:08:35,245 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-16 17:08:35,246 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 159 with the following transitions: [2019-09-16 17:08:35,249 INFO L207 CegarAbsIntRunner]: [50], [51], [52], [56], [59], [103], [119], [123], [124], [125], [140], [143], [145], [154], [158], [162], [165], [170], [173], [176], [178], [181], [199], [201], [204], [206], [209], [212], [215], [223], [233], [234], [235], [236], [237], [239], [244], [246], [247], [252], [255], [259], [265], [292], [293], [298], [300], [301], [304], [306], [309], [319], [322], [326], [327], [330], [331], [332], [426], [427], [432], [434], [437], [445], [446], [447], [448], [449], [450], [451], [452], [453], [495], [496], [497], [498], [499], [500], [503], [504], [507], [508], [509], [510], [511], [513], [514], [515], [516], [517], [518], [519], [520], [525], [526], [527], [528], [535], [536], [537], [545], [546], [547] [2019-09-16 17:08:35,296 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-16 17:08:35,296 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-16 17:08:35,369 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-16 17:08:35,371 INFO L272 AbstractInterpreter]: Visited 2 different actions 2 times. Never merged. Never widened. Performed 69 root evaluator evaluations with a maximum evaluation depth of 0. Performed 69 inverse root evaluator evaluations with a maximum inverse evaluation depth of 0. Never found a fixpoint. Largest state had 128 variables. [2019-09-16 17:08:35,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:08:35,376 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-16 17:08:35,438 INFO L219 lantSequenceWeakener]: Could never weaken! [2019-09-16 17:08:35,438 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-16 17:08:35,447 INFO L420 sIntCurrentIteration]: We unified 157 AI predicates to 157 [2019-09-16 17:08:35,447 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-16 17:08:35,448 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-16 17:08:35,448 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 5 [2019-09-16 17:08:35,448 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:08:35,449 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-16 17:08:35,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-16 17:08:35,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-16 17:08:35,450 INFO L87 Difference]: Start difference. First operand 2497 states and 3197 transitions. Second operand 2 states. [2019-09-16 17:08:35,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:08:35,450 INFO L93 Difference]: Finished difference Result 2 states and 1 transitions. [2019-09-16 17:08:35,451 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-16 17:08:35,451 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 158 [2019-09-16 17:08:35,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:08:35,451 INFO L225 Difference]: With dead ends: 2 [2019-09-16 17:08:35,451 INFO L226 Difference]: Without dead ends: 0 [2019-09-16 17:08:35,453 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-16 17:08:35,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-16 17:08:35,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-16 17:08:35,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-16 17:08:35,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-16 17:08:35,454 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 158 [2019-09-16 17:08:35,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:08:35,454 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-16 17:08:35,454 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-16 17:08:35,454 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-16 17:08:35,454 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-16 17:08:35,459 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.09 05:08:35 BoogieIcfgContainer [2019-09-16 17:08:35,459 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-16 17:08:35,461 INFO L168 Benchmark]: Toolchain (without parser) took 6752.85 ms. Allocated memory was 138.4 MB in the beginning and 343.4 MB in the end (delta: 205.0 MB). Free memory was 84.7 MB in the beginning and 169.8 MB in the end (delta: -85.0 MB). Peak memory consumption was 120.0 MB. Max. memory is 7.1 GB. [2019-09-16 17:08:35,462 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 138.4 MB. Free memory was 104.5 MB in the beginning and 104.3 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-16 17:08:35,463 INFO L168 Benchmark]: CACSL2BoogieTranslator took 806.56 ms. Allocated memory was 138.4 MB in the beginning and 196.6 MB in the end (delta: 58.2 MB). Free memory was 84.5 MB in the beginning and 161.4 MB in the end (delta: -76.9 MB). Peak memory consumption was 21.5 MB. Max. memory is 7.1 GB. [2019-09-16 17:08:35,464 INFO L168 Benchmark]: Boogie Preprocessor took 126.24 ms. Allocated memory is still 196.6 MB. Free memory was 161.4 MB in the beginning and 157.1 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.3 MB. Max. memory is 7.1 GB. [2019-09-16 17:08:35,465 INFO L168 Benchmark]: RCFGBuilder took 1342.21 ms. Allocated memory was 196.6 MB in the beginning and 218.6 MB in the end (delta: 22.0 MB). Free memory was 157.1 MB in the beginning and 187.8 MB in the end (delta: -30.8 MB). Peak memory consumption was 92.1 MB. Max. memory is 7.1 GB. [2019-09-16 17:08:35,465 INFO L168 Benchmark]: TraceAbstraction took 4471.16 ms. Allocated memory was 218.6 MB in the beginning and 343.4 MB in the end (delta: 124.8 MB). Free memory was 187.8 MB in the beginning and 169.8 MB in the end (delta: 18.1 MB). Peak memory consumption was 142.9 MB. Max. memory is 7.1 GB. [2019-09-16 17:08:35,469 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 138.4 MB. Free memory was 104.5 MB in the beginning and 104.3 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 806.56 ms. Allocated memory was 138.4 MB in the beginning and 196.6 MB in the end (delta: 58.2 MB). Free memory was 84.5 MB in the beginning and 161.4 MB in the end (delta: -76.9 MB). Peak memory consumption was 21.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 126.24 ms. Allocated memory is still 196.6 MB. Free memory was 161.4 MB in the beginning and 157.1 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1342.21 ms. Allocated memory was 196.6 MB in the beginning and 218.6 MB in the end (delta: 22.0 MB). Free memory was 157.1 MB in the beginning and 187.8 MB in the end (delta: -30.8 MB). Peak memory consumption was 92.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4471.16 ms. Allocated memory was 218.6 MB in the beginning and 343.4 MB in the end (delta: 124.8 MB). Free memory was 187.8 MB in the beginning and 169.8 MB in the end (delta: 18.1 MB). Peak memory consumption was 142.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 617]: 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 42 procedures, 246 locations, 1 error locations. SAFE Result, 4.4s OverallTime, 10 OverallIterations, 2 TraceHistogramMax, 1.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1556 SDtfs, 865 SDslu, 3445 SDs, 0 SdLazy, 910 SolverSat, 122 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 237 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2497occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.1s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 1.0 AbsIntWeakeningRatio, 0.8280254777070064 AbsIntAvgWeakeningVarsNumRemoved, 0.0 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 10 MinimizatonAttempts, 339 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 801 NumberOfCodeBlocks, 801 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 791 ConstructedInterpolants, 0 QuantifiedInterpolants, 108749 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 9 PerfectInterpolantSequences, 44/58 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...