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_product62.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fea9116 [2019-09-20 13:30:22,689 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-20 13:30:22,691 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-20 13:30:22,702 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-20 13:30:22,702 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-20 13:30:22,703 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-20 13:30:22,705 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-20 13:30:22,706 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-20 13:30:22,708 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-20 13:30:22,709 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-20 13:30:22,710 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-20 13:30:22,711 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-20 13:30:22,711 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-20 13:30:22,712 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-20 13:30:22,713 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-20 13:30:22,714 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-20 13:30:22,715 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-20 13:30:22,716 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-20 13:30:22,717 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-20 13:30:22,719 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-20 13:30:22,720 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-20 13:30:22,721 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-20 13:30:22,722 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-20 13:30:22,723 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-20 13:30:22,725 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-20 13:30:22,725 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-20 13:30:22,725 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-20 13:30:22,726 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-20 13:30:22,726 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-20 13:30:22,727 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-20 13:30:22,727 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-20 13:30:22,728 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-20 13:30:22,729 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-20 13:30:22,729 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-20 13:30:22,730 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-20 13:30:22,731 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-20 13:30:22,731 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-20 13:30:22,732 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-20 13:30:22,732 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-20 13:30:22,733 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-20 13:30:22,733 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-20 13:30:22,734 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 13:30:22,748 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-20 13:30:22,748 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-20 13:30:22,749 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-20 13:30:22,749 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-20 13:30:22,750 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-20 13:30:22,750 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-20 13:30:22,750 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-20 13:30:22,750 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-20 13:30:22,750 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-20 13:30:22,751 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-20 13:30:22,751 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-20 13:30:22,751 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-20 13:30:22,752 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-20 13:30:22,752 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-20 13:30:22,752 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-20 13:30:22,752 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-20 13:30:22,752 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-20 13:30:22,753 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-20 13:30:22,753 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-20 13:30:22,753 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-20 13:30:22,753 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-20 13:30:22,753 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-20 13:30:22,754 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-20 13:30:22,754 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-20 13:30:22,754 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-20 13:30:22,754 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-20 13:30:22,754 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-20 13:30:22,755 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-20 13:30:22,755 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-20 13:30:22,755 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-20 13:30:22,782 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-20 13:30:22,794 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-20 13:30:22,797 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-20 13:30:22,799 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-20 13:30:22,799 INFO L275 PluginConnector]: CDTParser initialized [2019-09-20 13:30:22,800 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product62.cil.c [2019-09-20 13:30:22,858 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a82ce7dac/3b67bf8f7b504ee4ad6ca0f81f7c7837/FLAGf3415e718 [2019-09-20 13:30:23,343 INFO L306 CDTParser]: Found 1 translation units. [2019-09-20 13:30:23,344 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec2_product62.cil.c [2019-09-20 13:30:23,373 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a82ce7dac/3b67bf8f7b504ee4ad6ca0f81f7c7837/FLAGf3415e718 [2019-09-20 13:30:23,679 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a82ce7dac/3b67bf8f7b504ee4ad6ca0f81f7c7837 [2019-09-20 13:30:23,687 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-20 13:30:23,688 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-20 13:30:23,689 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-20 13:30:23,689 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-20 13:30:23,693 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-20 13:30:23,694 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:30:23" (1/1) ... [2019-09-20 13:30:23,697 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a6da0b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:23, skipping insertion in model container [2019-09-20 13:30:23,698 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:30:23" (1/1) ... [2019-09-20 13:30:23,705 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-20 13:30:23,764 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-20 13:30:24,174 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:30:24,187 INFO L188 MainTranslator]: Completed pre-run [2019-09-20 13:30:24,298 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:30:24,350 INFO L192 MainTranslator]: Completed translation [2019-09-20 13:30:24,350 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:24 WrapperNode [2019-09-20 13:30:24,351 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-20 13:30:24,352 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-20 13:30:24,352 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-20 13:30:24,352 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-20 13:30:24,366 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:24" (1/1) ... [2019-09-20 13:30:24,368 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:24" (1/1) ... [2019-09-20 13:30:24,401 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:24" (1/1) ... [2019-09-20 13:30:24,401 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:24" (1/1) ... [2019-09-20 13:30:24,444 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:24" (1/1) ... [2019-09-20 13:30:24,458 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:24" (1/1) ... [2019-09-20 13:30:24,467 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:24" (1/1) ... [2019-09-20 13:30:24,474 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-20 13:30:24,475 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-20 13:30:24,475 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-20 13:30:24,475 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-20 13:30:24,476 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:24" (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 13:30:24,549 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-20 13:30:24,549 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-20 13:30:24,549 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-09-20 13:30:24,550 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-09-20 13:30:24,550 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-09-20 13:30:24,550 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-09-20 13:30:24,550 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-09-20 13:30:24,550 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-09-20 13:30:24,550 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-09-20 13:30:24,551 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-09-20 13:30:24,551 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-09-20 13:30:24,551 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-09-20 13:30:24,551 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-09-20 13:30:24,551 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-20 13:30:24,551 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-09-20 13:30:24,552 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2019-09-20 13:30:24,552 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2019-09-20 13:30:24,552 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-09-20 13:30:24,552 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-09-20 13:30:24,552 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-09-20 13:30:24,552 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-09-20 13:30:24,553 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-09-20 13:30:24,553 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-09-20 13:30:24,553 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-09-20 13:30:24,553 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-09-20 13:30:24,553 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-09-20 13:30:24,553 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-09-20 13:30:24,554 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-09-20 13:30:24,554 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-09-20 13:30:24,554 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-09-20 13:30:24,554 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-09-20 13:30:24,554 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-09-20 13:30:24,555 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-09-20 13:30:24,555 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2019-09-20 13:30:24,555 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-09-20 13:30:24,555 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2019-09-20 13:30:24,555 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-09-20 13:30:24,556 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-09-20 13:30:24,556 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-09-20 13:30:24,556 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-09-20 13:30:24,556 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-09-20 13:30:24,556 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-09-20 13:30:24,557 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-09-20 13:30:24,557 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2019-09-20 13:30:24,557 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-20 13:30:24,557 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-20 13:30:24,557 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-09-20 13:30:24,558 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-09-20 13:30:24,558 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-20 13:30:24,558 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-09-20 13:30:24,558 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-09-20 13:30:24,558 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-09-20 13:30:24,558 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-09-20 13:30:24,559 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-20 13:30:24,559 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-09-20 13:30:24,559 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-09-20 13:30:24,559 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-20 13:30:24,559 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-09-20 13:30:24,560 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-09-20 13:30:24,560 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-20 13:30:24,560 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-09-20 13:30:24,560 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-09-20 13:30:24,560 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-20 13:30:24,560 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-09-20 13:30:24,561 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-09-20 13:30:24,561 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-09-20 13:30:24,561 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-09-20 13:30:24,561 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-09-20 13:30:24,561 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-09-20 13:30:24,561 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-09-20 13:30:24,562 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-09-20 13:30:24,562 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2019-09-20 13:30:24,562 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-09-20 13:30:24,562 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-09-20 13:30:24,562 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-09-20 13:30:24,562 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-09-20 13:30:24,562 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-09-20 13:30:24,563 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-20 13:30:24,563 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-09-20 13:30:24,563 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-09-20 13:30:24,563 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-09-20 13:30:24,563 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2019-09-20 13:30:24,563 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-09-20 13:30:24,564 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-09-20 13:30:24,564 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-09-20 13:30:24,564 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-09-20 13:30:24,564 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-09-20 13:30:24,564 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-09-20 13:30:24,564 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2019-09-20 13:30:24,565 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-09-20 13:30:24,565 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-09-20 13:30:24,565 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-09-20 13:30:24,565 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-09-20 13:30:24,565 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-09-20 13:30:24,565 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-09-20 13:30:24,565 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-09-20 13:30:24,566 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2019-09-20 13:30:24,566 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-09-20 13:30:24,566 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2019-09-20 13:30:24,566 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-20 13:30:24,566 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-09-20 13:30:24,566 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-20 13:30:25,846 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-20 13:30:25,850 INFO L283 CfgBuilder]: Removed 5 assume(true) statements. [2019-09-20 13:30:25,851 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:30:25 BoogieIcfgContainer [2019-09-20 13:30:25,851 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-20 13:30:25,853 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-20 13:30:25,854 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-20 13:30:25,857 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-20 13:30:25,857 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 01:30:23" (1/3) ... [2019-09-20 13:30:25,859 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7342a5be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:30:25, skipping insertion in model container [2019-09-20 13:30:25,859 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:24" (2/3) ... [2019-09-20 13:30:25,860 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7342a5be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:30:25, skipping insertion in model container [2019-09-20 13:30:25,860 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:30:25" (3/3) ... [2019-09-20 13:30:25,863 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product62.cil.c [2019-09-20 13:30:25,872 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-20 13:30:25,884 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-20 13:30:25,900 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-20 13:30:25,936 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-20 13:30:25,937 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-20 13:30:25,937 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-20 13:30:25,938 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-20 13:30:25,938 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-20 13:30:25,940 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-20 13:30:25,941 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-20 13:30:25,941 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-20 13:30:25,965 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states. [2019-09-20 13:30:25,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2019-09-20 13:30:25,979 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:30:25,980 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 13:30:25,982 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:30:25,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:30:25,988 INFO L82 PathProgramCache]: Analyzing trace with hash -519940638, now seen corresponding path program 1 times [2019-09-20 13:30:25,990 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:30:26,044 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:26,045 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:30:26,045 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:26,045 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:30:26,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:30:26,389 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 13:30:26,392 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:30:26,392 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-20 13:30:26,393 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:30:26,404 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-20 13:30:26,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-20 13:30:26,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:30:26,423 INFO L87 Difference]: Start difference. First operand 202 states. Second operand 2 states. [2019-09-20 13:30:26,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:30:26,471 INFO L93 Difference]: Finished difference Result 170 states and 201 transitions. [2019-09-20 13:30:26,471 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-20 13:30:26,472 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 51 [2019-09-20 13:30:26,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:30:26,491 INFO L225 Difference]: With dead ends: 170 [2019-09-20 13:30:26,491 INFO L226 Difference]: Without dead ends: 159 [2019-09-20 13:30:26,496 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 13:30:26,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2019-09-20 13:30:26,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2019-09-20 13:30:26,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2019-09-20 13:30:26,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 189 transitions. [2019-09-20 13:30:26,580 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 189 transitions. Word has length 51 [2019-09-20 13:30:26,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:30:26,580 INFO L475 AbstractCegarLoop]: Abstraction has 159 states and 189 transitions. [2019-09-20 13:30:26,580 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-20 13:30:26,581 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 189 transitions. [2019-09-20 13:30:26,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-09-20 13:30:26,592 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:30:26,592 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] [2019-09-20 13:30:26,592 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:30:26,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:30:26,593 INFO L82 PathProgramCache]: Analyzing trace with hash -183354494, now seen corresponding path program 1 times [2019-09-20 13:30:26,594 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:30:26,597 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:26,597 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:30:26,597 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:26,597 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:30:26,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:30:26,736 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 13:30:26,736 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:30:26,736 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-20 13:30:26,736 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:30:26,738 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-20 13:30:26,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-20 13:30:26,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-20 13:30:26,739 INFO L87 Difference]: Start difference. First operand 159 states and 189 transitions. Second operand 3 states. [2019-09-20 13:30:26,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:30:26,755 INFO L93 Difference]: Finished difference Result 150 states and 177 transitions. [2019-09-20 13:30:26,755 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-20 13:30:26,756 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2019-09-20 13:30:26,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:30:26,758 INFO L225 Difference]: With dead ends: 150 [2019-09-20 13:30:26,758 INFO L226 Difference]: Without dead ends: 150 [2019-09-20 13:30:26,759 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 13:30:26,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2019-09-20 13:30:26,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2019-09-20 13:30:26,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2019-09-20 13:30:26,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 177 transitions. [2019-09-20 13:30:26,771 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 177 transitions. Word has length 52 [2019-09-20 13:30:26,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:30:26,771 INFO L475 AbstractCegarLoop]: Abstraction has 150 states and 177 transitions. [2019-09-20 13:30:26,771 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-20 13:30:26,771 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 177 transitions. [2019-09-20 13:30:26,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-09-20 13:30:26,773 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:30:26,773 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:30:26,773 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:30:26,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:30:26,774 INFO L82 PathProgramCache]: Analyzing trace with hash -1707012514, now seen corresponding path program 1 times [2019-09-20 13:30:26,774 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:30:26,777 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:26,777 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:30:26,777 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:26,777 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:30:26,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:30:26,899 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 13:30:26,900 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:30:26,900 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-20 13:30:26,901 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:30:26,901 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-20 13:30:26,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-20 13:30:26,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-09-20 13:30:26,902 INFO L87 Difference]: Start difference. First operand 150 states and 177 transitions. Second operand 7 states. [2019-09-20 13:30:27,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:30:27,255 INFO L93 Difference]: Finished difference Result 150 states and 176 transitions. [2019-09-20 13:30:27,255 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-20 13:30:27,255 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 57 [2019-09-20 13:30:27,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:30:27,258 INFO L225 Difference]: With dead ends: 150 [2019-09-20 13:30:27,258 INFO L226 Difference]: Without dead ends: 150 [2019-09-20 13:30:27,258 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 13:30:27,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2019-09-20 13:30:27,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2019-09-20 13:30:27,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2019-09-20 13:30:27,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 176 transitions. [2019-09-20 13:30:27,271 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 176 transitions. Word has length 57 [2019-09-20 13:30:27,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:30:27,272 INFO L475 AbstractCegarLoop]: Abstraction has 150 states and 176 transitions. [2019-09-20 13:30:27,272 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-20 13:30:27,272 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 176 transitions. [2019-09-20 13:30:27,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2019-09-20 13:30:27,276 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:30:27,277 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] [2019-09-20 13:30:27,277 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:30:27,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:30:27,278 INFO L82 PathProgramCache]: Analyzing trace with hash 1819519357, now seen corresponding path program 1 times [2019-09-20 13:30:27,278 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:30:27,281 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:27,281 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:30:27,281 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:27,281 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:30:27,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:30:27,417 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 13:30:27,418 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:30:27,418 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-20 13:30:27,418 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:30:27,418 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-20 13:30:27,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-20 13:30:27,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-20 13:30:27,419 INFO L87 Difference]: Start difference. First operand 150 states and 176 transitions. Second operand 5 states. [2019-09-20 13:30:27,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:30:27,995 INFO L93 Difference]: Finished difference Result 266 states and 308 transitions. [2019-09-20 13:30:27,996 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-20 13:30:27,996 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 75 [2019-09-20 13:30:27,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:30:28,000 INFO L225 Difference]: With dead ends: 266 [2019-09-20 13:30:28,005 INFO L226 Difference]: Without dead ends: 266 [2019-09-20 13:30:28,006 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-09-20 13:30:28,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2019-09-20 13:30:28,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 247. [2019-09-20 13:30:28,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 247 states. [2019-09-20 13:30:28,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 282 transitions. [2019-09-20 13:30:28,044 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 282 transitions. Word has length 75 [2019-09-20 13:30:28,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:30:28,047 INFO L475 AbstractCegarLoop]: Abstraction has 247 states and 282 transitions. [2019-09-20 13:30:28,048 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-20 13:30:28,048 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 282 transitions. [2019-09-20 13:30:28,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2019-09-20 13:30:28,049 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:30:28,049 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] [2019-09-20 13:30:28,049 INFO L418 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:30:28,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:30:28,050 INFO L82 PathProgramCache]: Analyzing trace with hash 948942276, now seen corresponding path program 1 times [2019-09-20 13:30:28,050 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:30:28,054 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:28,054 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:30:28,054 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:28,055 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:30:28,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:30:28,149 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 13:30:28,149 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:30:28,149 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-20 13:30:28,150 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:30:28,151 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-20 13:30:28,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-20 13:30:28,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-20 13:30:28,152 INFO L87 Difference]: Start difference. First operand 247 states and 282 transitions. Second operand 6 states. [2019-09-20 13:30:28,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:30:28,358 INFO L93 Difference]: Finished difference Result 448 states and 511 transitions. [2019-09-20 13:30:28,358 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-20 13:30:28,358 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 89 [2019-09-20 13:30:28,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:30:28,363 INFO L225 Difference]: With dead ends: 448 [2019-09-20 13:30:28,363 INFO L226 Difference]: Without dead ends: 448 [2019-09-20 13:30:28,364 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 [2019-09-20 13:30:28,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2019-09-20 13:30:28,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 442. [2019-09-20 13:30:28,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 442 states. [2019-09-20 13:30:28,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 504 transitions. [2019-09-20 13:30:28,412 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 504 transitions. Word has length 89 [2019-09-20 13:30:28,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:30:28,413 INFO L475 AbstractCegarLoop]: Abstraction has 442 states and 504 transitions. [2019-09-20 13:30:28,413 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-20 13:30:28,413 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 504 transitions. [2019-09-20 13:30:28,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2019-09-20 13:30:28,417 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:30:28,417 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, 1] [2019-09-20 13:30:28,417 INFO L418 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:30:28,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:30:28,418 INFO L82 PathProgramCache]: Analyzing trace with hash 1944159016, now seen corresponding path program 1 times [2019-09-20 13:30:28,420 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:30:28,423 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:28,424 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:30:28,425 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:28,425 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:30:28,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:30:28,603 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 13:30:28,604 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:30:28,604 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-20 13:30:28,604 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:30:28,606 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-20 13:30:28,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-20 13:30:28,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-09-20 13:30:28,606 INFO L87 Difference]: Start difference. First operand 442 states and 504 transitions. Second operand 7 states. [2019-09-20 13:30:29,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:30:29,316 INFO L93 Difference]: Finished difference Result 473 states and 553 transitions. [2019-09-20 13:30:29,320 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-20 13:30:29,320 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 93 [2019-09-20 13:30:29,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:30:29,324 INFO L225 Difference]: With dead ends: 473 [2019-09-20 13:30:29,324 INFO L226 Difference]: Without dead ends: 473 [2019-09-20 13:30:29,324 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2019-09-20 13:30:29,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2019-09-20 13:30:29,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 441. [2019-09-20 13:30:29,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 441 states. [2019-09-20 13:30:29,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 501 transitions. [2019-09-20 13:30:29,346 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 501 transitions. Word has length 93 [2019-09-20 13:30:29,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:30:29,347 INFO L475 AbstractCegarLoop]: Abstraction has 441 states and 501 transitions. [2019-09-20 13:30:29,347 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-20 13:30:29,347 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 501 transitions. [2019-09-20 13:30:29,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2019-09-20 13:30:29,349 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:30:29,349 INFO L407 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:30:29,350 INFO L418 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:30:29,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:30:29,350 INFO L82 PathProgramCache]: Analyzing trace with hash -412136482, now seen corresponding path program 1 times [2019-09-20 13:30:29,350 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:30:29,352 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:29,352 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:30:29,352 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:29,353 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:30:29,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:30:29,417 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:30:29,417 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:30:29,417 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-20 13:30:29,417 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:30:29,418 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-20 13:30:29,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-20 13:30:29,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-20 13:30:29,419 INFO L87 Difference]: Start difference. First operand 441 states and 501 transitions. Second operand 6 states. [2019-09-20 13:30:29,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:30:29,446 INFO L93 Difference]: Finished difference Result 455 states and 515 transitions. [2019-09-20 13:30:29,446 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-20 13:30:29,446 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 109 [2019-09-20 13:30:29,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:30:29,449 INFO L225 Difference]: With dead ends: 455 [2019-09-20 13:30:29,449 INFO L226 Difference]: Without dead ends: 455 [2019-09-20 13:30:29,450 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 [2019-09-20 13:30:29,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 455 states. [2019-09-20 13:30:29,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 455 to 451. [2019-09-20 13:30:29,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 451 states. [2019-09-20 13:30:29,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 451 states to 451 states and 511 transitions. [2019-09-20 13:30:29,469 INFO L78 Accepts]: Start accepts. Automaton has 451 states and 511 transitions. Word has length 109 [2019-09-20 13:30:29,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:30:29,469 INFO L475 AbstractCegarLoop]: Abstraction has 451 states and 511 transitions. [2019-09-20 13:30:29,469 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-20 13:30:29,470 INFO L276 IsEmpty]: Start isEmpty. Operand 451 states and 511 transitions. [2019-09-20 13:30:29,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2019-09-20 13:30:29,471 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:30:29,471 INFO L407 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:30:29,472 INFO L418 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:30:29,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:30:29,472 INFO L82 PathProgramCache]: Analyzing trace with hash 1527025564, now seen corresponding path program 1 times [2019-09-20 13:30:29,472 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:30:29,474 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:29,474 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:30:29,475 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:29,475 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:30:29,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:30:29,593 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:30:29,594 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:30:29,595 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-09-20 13:30:29,595 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:30:29,595 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-20 13:30:29,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-20 13:30:29,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-09-20 13:30:29,596 INFO L87 Difference]: Start difference. First operand 451 states and 511 transitions. Second operand 8 states. [2019-09-20 13:30:29,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:30:29,632 INFO L93 Difference]: Finished difference Result 465 states and 525 transitions. [2019-09-20 13:30:29,632 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-20 13:30:29,632 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 109 [2019-09-20 13:30:29,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:30:29,635 INFO L225 Difference]: With dead ends: 465 [2019-09-20 13:30:29,635 INFO L226 Difference]: Without dead ends: 465 [2019-09-20 13:30:29,636 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 [2019-09-20 13:30:29,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 465 states. [2019-09-20 13:30:29,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 465 to 459. [2019-09-20 13:30:29,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 459 states. [2019-09-20 13:30:29,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 519 transitions. [2019-09-20 13:30:29,652 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 519 transitions. Word has length 109 [2019-09-20 13:30:29,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:30:29,652 INFO L475 AbstractCegarLoop]: Abstraction has 459 states and 519 transitions. [2019-09-20 13:30:29,652 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-20 13:30:29,653 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 519 transitions. [2019-09-20 13:30:29,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2019-09-20 13:30:29,654 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:30:29,654 INFO L407 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:30:29,655 INFO L418 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:30:29,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:30:29,655 INFO L82 PathProgramCache]: Analyzing trace with hash -1998771717, now seen corresponding path program 1 times [2019-09-20 13:30:29,655 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:30:29,657 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:29,657 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:30:29,657 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:29,658 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:30:29,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:30:29,726 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:30:29,727 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:30:29,727 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-20 13:30:29,727 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:30:29,727 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-20 13:30:29,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-20 13:30:29,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-20 13:30:29,728 INFO L87 Difference]: Start difference. First operand 459 states and 519 transitions. Second operand 4 states. [2019-09-20 13:30:29,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:30:29,968 INFO L93 Difference]: Finished difference Result 931 states and 1097 transitions. [2019-09-20 13:30:29,969 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-20 13:30:29,969 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 109 [2019-09-20 13:30:29,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:30:29,973 INFO L225 Difference]: With dead ends: 931 [2019-09-20 13:30:29,975 INFO L226 Difference]: Without dead ends: 931 [2019-09-20 13:30:29,976 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 [2019-09-20 13:30:29,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 931 states. [2019-09-20 13:30:30,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 931 to 916. [2019-09-20 13:30:30,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 916 states. [2019-09-20 13:30:30,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 916 states to 916 states and 1065 transitions. [2019-09-20 13:30:30,025 INFO L78 Accepts]: Start accepts. Automaton has 916 states and 1065 transitions. Word has length 109 [2019-09-20 13:30:30,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:30:30,025 INFO L475 AbstractCegarLoop]: Abstraction has 916 states and 1065 transitions. [2019-09-20 13:30:30,025 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-20 13:30:30,025 INFO L276 IsEmpty]: Start isEmpty. Operand 916 states and 1065 transitions. [2019-09-20 13:30:30,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2019-09-20 13:30:30,029 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:30:30,030 INFO L407 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:30:30,030 INFO L418 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:30:30,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:30:30,030 INFO L82 PathProgramCache]: Analyzing trace with hash -1262789055, now seen corresponding path program 1 times [2019-09-20 13:30:30,030 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:30:30,033 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:30,034 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:30:30,034 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:30,034 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:30:30,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:30:30,177 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-09-20 13:30:30,177 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:30:30,177 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-20 13:30:30,178 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 114 with the following transitions: [2019-09-20 13:30:30,181 INFO L207 CegarAbsIntRunner]: [50], [51], [52], [56], [59], [94], [110], [114], [115], [116], [131], [134], [136], [145], [149], [153], [156], [161], [164], [169], [175], [178], [188], [189], [192], [194], [197], [199], [202], [205], [217], [218], [228], [230], [235], [238], [241], [243], [248], [250], [251], [257], [261], [294], [295], [305], [308], [310], [313], [323], [326], [330], [331], [334], [335], [350], [353], [354], [355], [379], [381], [382], [449], [450], [457], [459], [460], [468], [469], [470], [471], [472], [473], [474], [475], [476], [516], [517], [518], [519], [520], [521], [524], [528], [529], [530], [531], [532], [534], [535], [536], [537], [538], [539], [542], [543], [544], [550], [551], [552], [553], [564], [565], [568], [569], [570], [572], [573], [578], [579], [580] [2019-09-20 13:30:30,221 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-20 13:30:30,221 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-20 13:30:30,290 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-20 13:30:30,292 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. [2019-09-20 13:30:30,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:30:30,296 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-20 13:30:30,340 INFO L219 lantSequenceWeakener]: Could never weaken! [2019-09-20 13:30:30,340 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-20 13:30:30,344 INFO L420 sIntCurrentIteration]: We unified 112 AI predicates to 112 [2019-09-20 13:30:30,344 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-20 13:30:30,345 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-20 13:30:30,345 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [13] total 13 [2019-09-20 13:30:30,345 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:30:30,346 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-20 13:30:30,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-20 13:30:30,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:30:30,346 INFO L87 Difference]: Start difference. First operand 916 states and 1065 transitions. Second operand 2 states. [2019-09-20 13:30:30,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:30:30,347 INFO L93 Difference]: Finished difference Result 2 states and 1 transitions. [2019-09-20 13:30:30,347 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-20 13:30:30,347 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 113 [2019-09-20 13:30:30,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:30:30,347 INFO L225 Difference]: With dead ends: 2 [2019-09-20 13:30:30,348 INFO L226 Difference]: Without dead ends: 0 [2019-09-20 13:30:30,348 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 112 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 13:30:30,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-20 13:30:30,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-20 13:30:30,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-20 13:30:30,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-20 13:30:30,349 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 113 [2019-09-20 13:30:30,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:30:30,349 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-20 13:30:30,349 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-20 13:30:30,349 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-20 13:30:30,350 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-20 13:30:30,355 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 01:30:30 BoogieIcfgContainer [2019-09-20 13:30:30,355 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-20 13:30:30,357 INFO L168 Benchmark]: Toolchain (without parser) took 6668.15 ms. Allocated memory was 136.3 MB in the beginning and 361.8 MB in the end (delta: 225.4 MB). Free memory was 83.5 MB in the beginning and 176.4 MB in the end (delta: -92.9 MB). Peak memory consumption was 132.6 MB. Max. memory is 7.1 GB. [2019-09-20 13:30:30,358 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 136.3 MB. Free memory was 102.5 MB in the beginning and 102.3 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-20 13:30:30,359 INFO L168 Benchmark]: CACSL2BoogieTranslator took 662.09 ms. Allocated memory was 136.3 MB in the beginning and 197.1 MB in the end (delta: 60.8 MB). Free memory was 83.3 MB in the beginning and 161.8 MB in the end (delta: -78.5 MB). Peak memory consumption was 22.8 MB. Max. memory is 7.1 GB. [2019-09-20 13:30:30,360 INFO L168 Benchmark]: Boogie Preprocessor took 122.86 ms. Allocated memory is still 197.1 MB. Free memory was 161.8 MB in the beginning and 157.1 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.7 MB. Max. memory is 7.1 GB. [2019-09-20 13:30:30,361 INFO L168 Benchmark]: RCFGBuilder took 1376.59 ms. Allocated memory was 197.1 MB in the beginning and 215.0 MB in the end (delta: 17.8 MB). Free memory was 157.1 MB in the beginning and 182.2 MB in the end (delta: -25.1 MB). Peak memory consumption was 96.1 MB. Max. memory is 7.1 GB. [2019-09-20 13:30:30,362 INFO L168 Benchmark]: TraceAbstraction took 4501.39 ms. Allocated memory was 215.0 MB in the beginning and 361.8 MB in the end (delta: 146.8 MB). Free memory was 182.2 MB in the beginning and 176.4 MB in the end (delta: 5.8 MB). Peak memory consumption was 152.6 MB. Max. memory is 7.1 GB. [2019-09-20 13:30:30,366 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 136.3 MB. Free memory was 102.5 MB in the beginning and 102.3 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 662.09 ms. Allocated memory was 136.3 MB in the beginning and 197.1 MB in the end (delta: 60.8 MB). Free memory was 83.3 MB in the beginning and 161.8 MB in the end (delta: -78.5 MB). Peak memory consumption was 22.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 122.86 ms. Allocated memory is still 197.1 MB. Free memory was 161.8 MB in the beginning and 157.1 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1376.59 ms. Allocated memory was 197.1 MB in the beginning and 215.0 MB in the end (delta: 17.8 MB). Free memory was 157.1 MB in the beginning and 182.2 MB in the end (delta: -25.1 MB). Peak memory consumption was 96.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4501.39 ms. Allocated memory was 215.0 MB in the beginning and 361.8 MB in the end (delta: 146.8 MB). Free memory was 182.2 MB in the beginning and 176.4 MB in the end (delta: 5.8 MB). Peak memory consumption was 152.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 516]: 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 44 procedures, 261 locations, 1 error locations. SAFE Result, 4.4s OverallTime, 10 OverallIterations, 2 TraceHistogramMax, 2.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1753 SDtfs, 951 SDslu, 3633 SDs, 0 SdLazy, 1248 SolverSat, 282 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 208 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=916occurred 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, 1.0 AbsIntAvgWeakeningVarsNumRemoved, 0.0 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 10 MinimizatonAttempts, 82 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 857 NumberOfCodeBlocks, 857 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 847 ConstructedInterpolants, 0 QuantifiedInterpolants, 126091 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 9 PerfectInterpolantSequences, 10/12 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...